JP3231804B2 - Reading and recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reading and recording apparatus.
In particular, the present invention relates to a reading and recording apparatus such as a facsimile apparatus provided with an image reading section and a printing and recording section in the same housing.

[0002]

2. Description of the Related Art A typical facsimile apparatus which reads an original image, performs photoelectric conversion, encodes the image signal, and transmits the encoded image signal is known. In such a facsimile apparatus, a facsimile apparatus capable of recording on plain paper has been gaining popularity in place of a conventional facsimile apparatus that records on thermal paper in terms of writing properties, imprintability, storage stability, and the like. Recently, as a printer capable of recording on such plain paper, the use frequency of a laser beam printer has been increasing.
As compact and inexpensive recording methods, for example, US Pat. No. 4,723,129 and US Pat.
An ink jet printer that performs recording by an ink jet method using the basic principle disclosed in Japanese Patent No. 796 is suitable. According to such an ink jet method, it is easy to form a multi-nozzle, but it is desirable to provide about 50 to 150 nozzles from the viewpoint of cost and maintainability. In this case, recording by the inkjet head is performed by scanning for the width of the nozzle (shuttle recording).
become. Therefore, in a facsimile apparatus or the like that reads a document image and performs shuttle recording based on the image signal by the above-described inkjet method, if the image reading unit also performs shuttle-type reading in accordance with the image signal, the photoelectric conversion element for reading is also reduced. Since the size can be reduced, the cost of the entire apparatus can be reduced.

[0003]

However, if a reading section having a reading head for reciprocating scanning and a recording head for performing recording by serial scanning are arranged in one housing, there is a possibility that the recorded and reproduced image may be disturbed. is there.
That is, according to the specifications of the G4 facsimile, which will be widely used in the future, reading of the document and image recording may be performed asynchronously and simultaneously. In this case, activation at the time of reciprocating scanning of the reading head and the recording head,
This is because impacts due to reversal and stop affect each other, and there is a possibility that images may be disturbed due to mutual vibration or the like in reading scanning or recording scanning by each head.

The present invention has been made in view of the above conventional example, and provides a reading / recording apparatus capable of reducing image disturbance due to mutual influence even when reading and recording scans are performed simultaneously. With the goal.

[0005]

To achieve the above object, a reading and recording apparatus of the present invention has the following arrangement. That is, a reading and recording apparatus in which an image reading unit for reading an image of a document and a recording unit for recording an image on a recording medium are arranged in one housing, wherein the image reading unit electrically converts the image. A reading head for reading, reading scanning means for scanning the reading head relative to the document,
The recording unit includes a recording head that performs recording, and recording scanning means that relatively scans the recording head with respect to the recording medium, and wherein the image reading unit reads an image and the recording unit In the case of simultaneously executing the recording by, the scanning of the read head by the reading scanning means, and the speed change in acceleration and deceleration of at least one of the scanning of the recording head by the recording scanning means,
The image processing apparatus further includes a control unit that performs control so that the time is slower than when one of reading of an image by the image reading unit and recording by the recording unit is executed.

[0006]

In the above construction, in a reading and recording apparatus in which an image reading section for reading an image of a document and a recording section for recording an image on a recording medium are arranged in one housing, scanning of a reading head by a reading scanning means. And controlling the speed change at the time of acceleration and deceleration of at least one of the scanning of the print head by the print scanning means so as to be slower than when either the image reading by the image reading unit or the printing by the printing unit is executed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing a configuration of a reading and recording apparatus according to the present embodiment. The reading and recording apparatus has a reading (reader) section 108 for reading an original image at an upper portion, and a roll paper cartridge 1 is mounted at a lower portion to record the image. An ink jet printer that performs recording on paper by an ink jet method is provided. The ink jet printer can be equipped with a plurality of cartridges, and is configured so that recording paper can be conveyed from a desired cartridge to a recording position and recorded.

In the ink jet printer section, recording paper 1a from a roll paper cartridge 2 is transported to a recording section by a recording head 205 for recording. Reference numeral 207 denotes a carriage on which the recording head 205 is mounted, which records an image on the recording paper 1a while moving in the vertical direction in FIG. Reference numeral 226 denotes a roller provided on the carriage 207. The roller 226 presses the sheet pressing portion 221 when the carriage 207 moves, thereby preventing the recording paper 1a from rising. 240 is a recording paper sensor for detecting whether or not the recording paper 1a is at a recording position;
03 and 204 are rollers for conveying the recording paper. 263,
A cutter 264 cuts the recording paper 1a conveyed by the rotation of the paper discharge rollers 203 and 204.

Next, the configuration of the reading unit 108 will be described. Reference numeral 101 denotes a main scanning carriage for a reading head, a light source 102 such as a lamp, a lens 103, and a photoelectric element 104.
Are moved in the direction of the arrow Y by the rotation of the main scanning motor 105. 106 is a sub-scanning carriage,
Main scanning carriage 101 and main scanning motor 105 described above
1 and the like, and the rotation of the sub-scanning motor 109 causes
Move vertically. As a result, the entire original image placed on the original table 115 can be read. 12
Reference numeral 6 denotes a sensor provided at the home position of the main scanning carriage, and detects whether the main scanning carriage 101 is located at the home position by detecting a protruding piece 125 provided on the carriage 101. Reference numeral 122 denotes a roller provided on the sub-scanning carriage 106. These configurations will be described later in detail with reference to FIGS.

Hereinafter, the configuration of each of these units will be described in detail with reference to the drawings.

FIG. 2 shows a recording paper roll 1 having an A4 size width.
FIG. 3 is a schematic perspective view of a roll paper cartridge 2 for storing the recording paper roll 1, FIG. 3 is a side sectional view of the roll paper cartridge 2 storing the recording paper roll 1, and FIG. FIG. 2 is a front sectional view when cut at the center of the recording paper roll 1.

In FIG. 2, 2a is a cover on the roll paper cartridge 2, 2b is a paper width guide for regulating the position of the recording paper roll 1 in the axial direction, and 2c is a rotating shaft 3 of the recording paper roll 1 mounted thereon. The rotating U-shaped groove 2d is a recording paper transport window for pulling out the recording paper 1a from the recording paper roll 1 to the outside of the cartridge and transporting it. 2e is a roller window,
A paper feed roller 4 (FIGS. 5 and 6) attached to the recording main unit is inserted through the roll window 2e, and the recording paper 1a is sandwiched by the cooperation of the pinch rollers 5 and 6, and the recording paper is rotated by the rotation. 1a can be transported from the cartridge 2 toward the recording section. 2f (FIG. 4) is a lock groove for hooking a lock arm provided in the main body device, 2g is a leaf spring for preventing the recording paper roll 1 from sagging, and 2i is a paper powder generated with the conveyance of the recording paper 1a. It is a paper dust tray for storing. 2k is a magnet catcher for locking the upper cover 2a, 2m is a metal piece for locking the upper cover 2a, 3 is a roll rotating shaft formed integrally with the recording paper roll 1, and 3a is a roll rotating shaft 3 external to the roll rotating shaft 3. A power transmission member made of rubber having a high coefficient of friction provided for transmitting power from the vehicle, 5, 6 are pinch rollers, and 16 is a brake pad for suppressing rotation of the pinch rollers 5, 6.

When the recording paper roll 1 is loaded into the cartridge 2, the rotating shaft 3 is inserted into the U-shaped groove 2c while both ends of the recording paper roll 1 are along the paper width guide 2b in the roll paper cartridge 2. . Then, the upper cover 2a is closed with the leading end of the recording paper 1a pulled out so as not to protrude from the housing of the cartridge 2. As a result, the recording paper 1a is sandwiched between the leaf spring 2g and the pinch roller 5 attached to the upper cover 2a. Thus, the recording paper 1a is fixed so that the recording paper roll 1 does not slack. In addition, the upper cover 2a is locked by the action of the magnet catcher 2k and the metal piece 2m provided inside the roll paper cartridge 2.

FIG. 5 is a view showing a state in which the roll paper cartridge 2 is mounted on the main unit, and FIG. 6 is a view showing a state in which the roll paper cartridge 2 is pushed down to the stopper 31 and the mounting is completed.

In FIG. 5, reference numeral 4a denotes a position where the paper feed roller 4 is pushed up when the cartridge 2 is inserted,
Reference numeral 4b denotes a position where the paper feed roller 4 is pushed down to convey the recording paper 1a. In response, the position of the transport pulley 15 also moves up and down as indicated by 15a and 15b.

When the roll paper cartridge 2 is pushed down to the stopper 31 of the main body, the roll paper cartridge 2 is locked by a lock mechanism provided inside the main body. This locking mechanism is shown in detail in FIG.

In FIG. 7, a lock arm 24 for locking the roll paper cartridge 2, a spring 25 and a plunger 26 for controlling the lock arm 24, and a pushing spring for pushing the roll paper cartridge 2 outward when the lock is released. 27 and lock arm 24
And a lock arm position sensor 28 for detecting the position of the lock arm.

When the roll paper cartridge 2 enters the insertion slot, the lock arm 24 is pushed down, and the lock arm position sensor 28 is turned on. When the roll paper cartridge 2 is further pushed down to the stopper 31 in this state, the lock arm 24 enters the lock groove 2 f provided on the lower surface of the cartridge 2. As a result, the lock arm 24 is pushed up by the action of the spring 25, and the signal of the lock arm position sensor 28 changes from on to off. Thus, the printer controller 250 (to be described later with reference to FIG. 18) knows whether or not the roll paper cartridge 2 is set at a predetermined position of the main body device by turning on / off the signal of the position sensor 28. At this time, the size detection sensor 308 (FIG. 18)
Based on this signal, the paper size of the recording paper roll 1 of the cartridge 2 can be detected.

Next, when pulling out the roll paper cartridge 2 from the main unit, the plunger 26 is turned on and the lock arm 24 is pushed down, whereby the lock of the cartridge 2 is released. 2 is pushed out of the main body by the action of the pushing spring 27.

When the power of the main unit is off, the lock arm 24 is kept engaged in the lock groove 2f of the roll paper cartridge 2 by the spring 25.
The cartridge 2 cannot be detached and removed. <Roll-paper unloading / rewinding mechanism> Next, a description will be given of a mechanism of a drive system used for conveying the recording paper 1a from the recording paper roll 1 and rewinding the recording paper roll 1.

The conveyance of the recording paper 1a of this embodiment and the recording paper 1
The rewinding mechanism a includes one feeding motor 19 and several gear trains as shown in FIGS. 5 and 6, and the recording paper 1a is wound around the roll 1 by the forward rotation of the feeding motor 19. The recording paper 1a is returned by the
Has been transported.

As shown in FIG. 6, when the roll paper cartridge 2 is pushed to the position of the stopper 31, two types of driving systems are connected to the feed motor 19. That is, the first drive system is a drive system for rewinding the recording paper 1a to the roll 1.

When the roll paper cartridge 2 is pushed to the position of the stopper 31, the power transmission member 3a (made of rubber) of the rotating shaft 3 of the roll 1 comes into contact with the resin-made drive supply member 21a. Here, the rotation center of the power transmission member 3a and the rotation center of the drive supply member 21a are configured to coincide with each other. When the drive supply member 21a is rotated by the rotation of the feed motor 19, the power transmission contacting the drive supply member 21a is performed. The material 3a also rotates. However, the contact pressure between them is not very strong. For this reason, when the load resistance of the power transmission member 3a increases due to some force acting reversely on the unwinding of the recording paper roll 1, the rotational force cannot be transmitted by the frictional force between them, and the slip is generated. Occurs. in this case,
The power transmission member 3a made of rubber is provided with a drive supply material 21a made of resin.
The power transmission material 3a is a replacement part integrated with the recording paper roll 1 and the amount of the power transmission material 3a is considered to be small. It seems that there is no particular problem because it is durable. In addition, shavings generated by this shaving,
The roll paper cartridge 2 is stored in a space 2h provided at a corner.

The driving force for rewinding the recording paper 1a to the recording paper roll 1 is a feeding motor 19 (stepping motor).
Is transmitted from the motor gear 20 (number of teeth Z20) press-fitted to the rotary shaft of the one-way bearing 21 to the large gear (number of teeth Z21b) of the one-way bearing 21, and its power is rotated by the friction between the drive supply material 21a and the power transmission material 3a. It is transmitted to the shaft 3.

The one-way bearing is a bearing which rotates in one direction but does not rotate in the other direction, and its structure is shown in FIG. FIG. 9 is a view of the one-way bearing 21 from the feed motor 19 side.

As shown in FIG. 9, this one-way bearing is
An outer ring 21b having a large gear 21b, and a driving supply material 2
Inner ring 21a with 1a and four needles 21
c. As can be seen from this figure, the inner ring 21a tries to rotate in the counterclockwise direction (or
The outer ring 21b is about to rotate clockwise) and the needle 21c is in a narrow space 21 provided on the inner surface of the outer ring 21b.
Since the inner ring 21a and the outer ring 21b cannot be rotated only by the inner ring 21a (or the outer ring 21b), the inner ring 21a and the outer ring 21b rotate integrally. In contrast, the inner ring 21a tries to rotate clockwise (or
The outer ring 21b tries to rotate in the counterclockwise direction)
The needle 21c has a large space 21e on the inner surface of the outer ring 21b.
, The inner ring 21a (or the outer ring 2).
1b) alone, and the power of the inner ring 21a is
Can not be transmitted to

When the feed motor 19 is driven to rotate and the motor gear 20 is rotated counterclockwise as viewed from the feed motor 19, the outer ring 21b of the one-way bearing 21 is rotated clockwise. As described above, when the outer ring 21b rotates in the clockwise direction, the one-way bearing 21 is configured to integrally transmit the rotational driving force, so that the drive supply material 21a of the inner ring rotates in the clockwise direction. . As a result, the drive supply material 21
The clockwise rotation force is transmitted from a. Thus, the recording paper 1a is wound up on the recording paper roll 1.
At this time, the recording paper roll 1 rotates at n1 = (Z20) / (Z20b) × (n20). Here, n1 is the number of revolutions (winding speed) of the recording paper roll 1, and n20 is the number of revolutions of the motor gear 20. At this time, the paper feed roller 4 is
Are separated from the pinch rollers 5 and 6, the driving force of the paper feed roller 4 is not transmitted to the recording paper roll 1, and the recording paper roll 1 is in the released state. Therefore, the recording paper roll 1 can wind the recording paper 1a around the recording paper roll 1 with a force close to no load.

The second drive system is a drive system for pulling out the recording paper 1a from the cartridge 2 and conveying it.

FIG. 8 is a view showing a mechanism for moving the sheet feeding roller 4 up and down as shown in FIGS. Reference numeral 30 denotes a plunger, which raises the paper feed roller 4 and the transport pulley 15 to a position shown by a solid line in FIG. Can be done. Reference numeral 29 denotes a spring, which applies tension in a direction in which the paper feed roller 4 is separated from the pinch rollers 5 and 6.

The driving force for transporting the recording paper 1a is transmitted from the motor gear 20 to the transport pulley 15 directly connected to the paper feed roller 4 via the timing belt 22 as shown in FIG. The transport pulley 15 is a pulley for the timing belt 22 having the number of teeth Z15, and the timing belt 22 is wound around a part of the motor gear 20 having the number of teeth Z20K.

When the motor gear 20 is rotated clockwise by the feed motor 19 when viewed from the feed motor 19 side, the transport pulley 15 is also rotated clockwise.
At this time, the paper feed roller 4 is lowered by the plunger 30. Accordingly, at this time, if the recording paper 1a is held between the paper feed roller 4 and the pinch rollers 5, 6, the rotation of the paper feed roller 4 pulls out the recording paper 1a from the cartridge 1 and conveys it. Become. Here, since the rubber hardness of the paper feed roller 4 is higher than the rubber hardness of the pinch rollers 5 and 6, the outer peripheral shape of the pinch rollers 5 and 6 is deformed along the outer peripheral shape of the paper feed roller 4. Will be. Therefore, as shown in FIG.
The paper is conveyed along the outer circumference of the paper feed roller 4 which is almost circular.

At this time, since the pinch rollers 5 and 6 are suppressed in rotational force by the brake pad 16 shown in FIG.
The curl of the recording paper 1a sandwiched between the paper feed roller 4 and the pinch rollers 5, 6 is removed by friction with each roller. The paper dust generated by the curl removal is stored in a paper dust receiver 2i provided below the roll paper cartridge 2. Due to this decurling, static electricity is generated in the recording paper 1a, the paper feed roller 4, and the pinch rollers 5, 6 to charge them.
Therefore, in order to remove this, the roll paper cartridge 2 is formed of a conductive resin or the like, and a conductive rubber material is used for the paper feed roller 4 and the pinch rollers 5 and 6. Further, inside the main body device, a static elimination spring is provided at a position in contact with the cartridge 2, and a static elimination brush is provided on a conveyance path of the recording paper 1a. Thus, when the cartridge 2 is mounted on the main body, the static elimination spring contacts the surface of the cartridge 2, so that the static electricity accumulated on the recording paper 1 a, the paper feed roller 4, the pinch rollers 5, 6, etc. And the like.

When the motor gear 20 rotates at the rotation speed n20, the transport roller 15 rotates at a rotation speed of n15 = (Z20) / (Z15) × n20.

Since the transport speed of the recording paper 1a on the paper feeding roller 4 is equal to the peripheral speed of the paper feeding roller 4, the recording paper 1a
Is transported at a speed of v4 = 2π × (r4) × (n15). Here, r4 represents the radius of the paper feed roller 4.

The rotation of the feed roller 4 causes the recording paper 1 to rotate.
a is conveyed at the speed v4, and the recording paper roll 1 rotates correspondingly to supply the recording paper 1a. At this time, the rotating shaft 3 of the recording paper roll 1 is rotated by n3 = (v4) / (2π × r1). Here, n3 is the rotation axis 3 of the roll 1.
, R1 is the roll radius of the recording paper roll 1.
Since the drive supply material 21a of the one-way bearing 21 is directly connected to the roll paper rotation shaft 3, it rotates at n21a = n3. Rearranging the above equation gives:

N21a = (r4 / r1) × (Z20 / Z15) × n20 Further, the outer ring gear 20b of the one-way bearing 21 is driven by the rotation of the motor gear 20 so that n21b = (Z20) / (Z21b) × (n20) It rotates at the rotation speed.

That is, when the feeding motor 19 is rotated clockwise as viewed from the motor side to convey the recording paper 1a, the driving feed material 21 which is the inner race of the one-way bearing 21 is used.
a receives a rotating force by the conveyance of the recording paper 1a. The outer ring gear 21b of the one-way bearing 21 is a motor gear 2
It receives torque directly from zero. Even in this case, it is sufficient to satisfy the condition of n21b> n21a so that the load is not applied to the one-way bearing 21. That is, the outer ring gear 21b only needs to rotate faster than the inner ring gear 21a. In this embodiment, the number of teeth of each gear and the radius of the feed roller 4 are set as Z20 = 20, Z21b = Z15 = 50, and r4 = 8. . That is, the core diameter r1 of the recording paper roll 1 may be set to 8 mm or more. In the present embodiment, since the core diameter is set to 20 mm, there is no burden on the one-way bearing 21.

As described above, when the feed motor 19 is rotated in the counterclockwise direction, the paper feed roller 4 is lifted upward to release the recording paper 1a, thereby causing the recording paper 1a to be released. It can be rewound on the roll 1. When the paper feed roller 4 is lowered and the recording paper roll 1 is sandwiched between the pinch rollers 5 and 6, and the feed motor 19 is rotated clockwise, the recording paper 1a is rolled into the roll paper cartridge 2. Can be pulled out and transported.

In this embodiment, the normal rotation of one motor 19,
By reversing, the recording paper 1a is pulled out and conveyed from the recording paper roll 1 or is rewound to the roll 1.
Each of them may be performed using a different motor.

Up to this point, an A4 size recording paper roll 1
The mechanism for transporting and rewinding the recording paper 1a from the roll 1 has been described with respect to the cartridge 2 and the exclusive cartridge 2. In this embodiment, in addition to the A4 size roll paper cartridge 2, for example, B5, B4, and A3 size roll paper cartridges 2 can be used, and two types of cartridges 2 can be set at the same time. The cartridge 2 shown in this example is A3 size. The main unit is provided with the same mechanism as the lock mechanism and the roll paper rewinding / transporting mechanism described above.
Has a pair.

The printer is provided with a size detection sensor 308 (FIG. 18) for detecting the size of the inserted roll paper cartridge. Controller 2
50 is capable of detecting the size of the recording paper. In this configuration, a size member (not shown) for size detection is provided outside the roll paper cartridge 2 according to the size of each roll 1, and the size of the recording paper of the cartridge is detected by detecting this member. Can be detected. <Structure of Recording Unit (FIG. 11)> FIG. 11 is an external perspective view showing the structure of the recording unit, and FIG. 12 is a diagram showing a cross-sectional shape of an ink jet printer unit including the cartridge 2.

This printer device is configured so that the recording paper 1a is transported to a recording position by the paper feed roller 4 and a predetermined image is recorded by the recording head 205.

The conveying means 200 in the recording section includes
A pair of conveying rollers 201 and 202 and a pair of sheet discharging rollers 203,
The transport roller 201 and the discharge roller 203 are rotated by a paper feed motor 230 to transport the recording paper 1a in the direction of arrow S.

The pair of paper discharge rollers 203 and 204 transmit a rotational force via a slip clutch (not shown) to the conveyed recording paper 1a (in this embodiment, the recording paper pulled out from the recording paper roll 1). It is configured so as to give an appropriate tension. The recording means is configured such that an ink jet type recording head 205 and a platen 206 are arranged to face each other, and the recording head 205 is
It is installed in. The carriage 207 is transported and driven by a carriage motor 209, a belt 210, and a drive transmission system thereof, and reciprocates in directions of arrows S and T along a guide shaft 208. During this movement, ink droplets are ejected from the recording head 205 according to the image signal,
A predetermined image is recorded on the recording paper 1a. At the home position of the carriage 207, a protrusion 211 provided on the carriage 207 is detected, and the carriage 2
A home position sensor 212 for detecting that the 07 is at the home position is provided. The sheet pressing means 220 includes a plate-shaped pressing member 221 and arms 222 formed at both ends thereof. The arm 222 is rotatably attached to the rotating shaft 213 of the transport roller 202. .

In the ink jet recording system as in this embodiment, the surface of the recording head 205 where the ink discharge ports are formed and the recording paper 1
The distance between the recording paper 1a and the recording surface is relatively small, and the distance between the recording paper 1a and the discharge port forming surface must be strictly controlled in order to avoid contact.
Is effective. The holding member 221 is made of 0.3 mm stainless steel and has a window in the recording area. The arm portion 222 has a tension spring 22.
4 is attached, and the pressing member 221 is attached to the recording paper 1a.
It is urged in the direction away from. A gentle slope 225 is provided at the end of the holding member 221 (at the home position side of the carriage 207).
07, a rotatable roller 226 is provided below.

With such a configuration, the carriage 20
7 moves in the directions of arrows S and T, so that the sheet pressing member 221 comes into contact with or separates from the recording paper 1a. That is, when the carriage 207 is at the home position, the pressing member 22 is biased by the spring 224.
1 is separated from the recording paper 1a, and the carriage 207 is
Is moved in the direction of arrow S, the roller 226
5, the sheet pressing member 221 is rotated in the direction of arrow V, and the weight of the carriage 207 causes the pressing member 221 to rotate.
Move while pressing on the recording paper 1a. When the carriage 207 returns to the home position and the roller 226 comes off the gentle slope 225, the pressing member 221 again moves the recording paper 1
Separate from a. The above is the configuration of the recording unit. <Description of Configuration of Reading (Reader) Unit (FIGS. 13 to 15)
13 is a view for explaining a cross-sectional configuration of the reading unit 108, FIG. 14 is a plan view of the reading unit, and FIG. 15 is a perspective view of a carriage for conveying a reading head having a reading light receiving element and the like in the sub-scanning direction. FIG. In these figures,
Portions having the same function are denoted by the same reference numerals.

In FIG. 13, a document glass 115 for placing a document (not shown) is placed above the reading unit 108.
And a pressure plate 116 for pressing a document placed on the glass 115. The original placed on the original glass 115 is moved to the main scanning carriage 1.
The light is radiated by a lamp 102 mounted on the optical disc 01, and the reflected light is sensed by a light receiving element 104 such as a CCD via a lens 103, whereby the image is converted into an electric signal by the light receiving element 104 and the original is read. Have been.

The main scanning carriage 101 has a main scanning rail 117 arranged along the Y direction which is the main scanning direction.
And is configured to be slidable on the rail 117. A main scanning belt 118 for transmitting the driving force of the main scanning motor 105 is fixed to the main scanning carriage 101 by an engaging member (not shown). As the main scanning motor 105 rotates, the carriage 101 is moved in the main scanning direction. Is transported from the position A to the position D (FIG. 16) in the direction of the arrow Y. When the main scanning carriage 101 reciprocates, a document image corresponding to the reading width (E1) of the light receiving element 104 is continuously read in a band shape from the position B to the position C (FIG. 16). .

The position A is the main scanning carriage 101
When the main scanning carriage 101 moves backward, the light-shielding plate 125 provided below the carriage 101 moves to the main scanning home position sensor 1.
26 is a position where light is shielded. A position B is a reading start position of a document image. As shown in FIG. 16, the main scanning carriage 101 is accelerated from the position A by a predetermined acceleration by the main scanning motor 105, and the carriage 101 becomes a constant speed. Further, the position C is a reading end position, and the position D is decelerated at a predetermined deceleration from the reading end position C,
This is the position where the main scanning carriage 101 stops. Note that these C position and D position change depending on the document size.

Here, the main scanning motor 105 is a stepping motor having a step angle of 1.8 degrees, a reduction ratio of the driving system is 1, and a diameter of the pulley 131 fixed to the rotating shaft of the main scanning motor 105 is 10. 5mm, so main scanning motor 1
When one pulse is input to 05, the main scanning carriage 101 moves by 0.165 mm.

Based on the above values, in order to move the main scanning carriage 101 by the distance shown in FIG.
The number of step pulses applied to 5 is: A position → B position P1 = 182 pulses ... 30 mm B position → C position P2 = 1273 pulses ... A4 size 2
In the case of 10 mm, 1801 pulses In the case of A3 size of 297 mm C position → D position P3 = 182 pulses ... 30 mm

The main scanning carriage 101 and the main scanning motor 105 are mounted on a sub-scanning carriage 106 as shown in FIG. A cylindrical bearing 119 (FIG. 13) is fixed to one side of the sub-scanning carriage 106. In addition, the reading unit 108 is provided with a cylindrical sub-scanning rail 120 disposed along the sub-scanning direction. And the bearing 119 is a sub-scanning rail 120.
The sub-scanning carriage 120 can be moved in the sub-scanning direction by using the sub-scanning rail 120 as a guide.

A sub-scanning belt 114 for transmitting the driving force of the sub-scanning motor 109 is provided on a side of the sub-scanning carriage 106 facing the sub-scanning rail 120 (hereinafter referred to as a driving side). It is fixed by a joining member. Accordingly, the sub-scanning carriage 106 is configured to be able to reciprocate in the X direction, which is the sub-scanning direction, with the rotation of the sub-scanning motor 109.

A shaft 122 is fixed to the side opposite to the drive side of the sub-scanning carriage 106 (hereinafter referred to as a driven side), and a support roller 123 is rotatably mounted on the shaft 122. The supporting roller 123
8 is configured to be able to move on a roller rail 124 provided on the roller 8. That is, when a driving force is transmitted from the sub-scanning motor 109 to the sub-scanning carriage 106, the sub-scanning carriage 106 moves in the sub-scanning direction (X direction).
The one that moves up.

In the reading section 108 configured as described above, the sub-scanning carriage 106 is
When the sub-scanning motor 109 rotates by a fixed amount in order to move the sub-scanning carriage 109 in accordance with the reading width (E1) of the light-receiving element 104 mounted on the sub-scanning belt 114, the rotation is transmitted to the sub-scanning carriage 106 Is transmitted. Then, the sub-scanning carriage 106 moves in a sub-scanning direction (X direction) corresponding to the reading amount E1, and stops. In this manner, as shown in FIG. 14, the carriage 106 moves from the U1 position to the U direction in the arrow X direction which is the sub-scanning direction.
Step movement can be performed to the two positions with the reading width E1. The U1 position is a reading start position in the sub-scanning direction and is a home position in the X direction of the sub-scanning carriage 106. When the sub-scanning carriage 106 moves backward, the light shielding plate 12 provided below the sub-scanning carriage 106
Reference numeral 7 denotes a position for shielding the sub-scanning home position sensor 128 from light. The U2 position is a reading end position, and varies depending on the document size.

The sub-scanning motor 109 has a step angle of 3.7.
Since the diameter of the pulley 113 fixed to the rotating shaft of the motor 109 is 26 mm, when one pulse is input to the sub-scanning motor 109,
The sub-scanning carriage 106 moves by 0.85 mm, and when 10 pulses are input, moves in the sub-scanning direction by the same distance as the reading width E1 (8.5 mm).

When the sub-scanning carriage 106 is step-fed with the above-described reading width E1, in order to cover the entire area of the document, the number N of step-sendings of the sub-scanning carriage 106 is A4 (297 mm). In the case of, N = 35 times In the case of A3 (420 mm), N = 50 times.

Next, the conveyance and recording operation of the recording paper 1a will be described with reference to FIG.

When the roll paper cartridge 2 is set in the insertion slot 51 of the main unit (FIG. 12), the printer controller 250 (FIG. 18) moves the feed roller 4 lifted by the spring 29 downward by the plunger 30. Then, the recording paper 1a is sandwiched between the pair of paper feed rollers 4, 5, and 6. In this state, by rotating the feed motor 19 clockwise as described above, the recording paper 1a can be sent from the cartridge 2 into the transport path. At this time, the recording paper 1a is inserted into the paper width guide 2b in the cartridge 2.
It is transported while the skew is corrected by (FIG. 2). When the paper feed sensor 13 detects the leading end of the paper, the controller 250 drives the paper feed motor 230 (FIG. 11) to rotate, and rotates the pair of transport rollers 201 and 202. The recording paper 1a is held between the nips of the pair of conveying rollers 201 and 202 and further conveyed. The conveying speed of the pair of conveying rollers 201 and 202 is higher than the speed of the pair of feeding rollers 4, 5 and 6, and Since the pressure is also sufficiently large, the sheet is sent to the above-described recording unit at the conveying speed of the conveying roller 201. In this way, at the time of recording in the recording section, the recording paper 1a is transported by the pair of conveying rollers 201 and 20.
2 and the paper feed rollers 4, 5,
I will slip between six. As a result, as shown in FIG. 10, the recording paper 1a is squeezed in the direction in which the roll habit is corrected by the paper feed rollers 4, 5, and 6.
The roll habit of a is corrected.

When the registration sensor 240 disposed downstream of the conveying roller 201 detects the leading end of the recording sheet 1a, the registration sensor 240 keeps moving until the leading end of the recording sheet 1a reaches the point W (FIG. 1) of the recording section.
The controller 250 drives the paper feed motor 230,
When the tip reaches the point W, it stops. The stop position is 2 mm ahead (W) of the recording area at the leading end of the paper, and the position is controlled by the number of pulses given to the paper feed motor 230.

In the above description, the cartridge 2 is inserted into the insertion slot 51 of the main unit. However, the present invention is not limited to this example, and another cartridge is inserted into the other insertion slot (not shown). Even in this case, the recording paper is conveyed to the recording unit according to a similar sequence.

Next, the operation of the ink jet printer of this embodiment will be described with reference to FIG. 12 based on a usage example of the ink jet printer.

When a print command is sent from the host computer 129 (FIG. 18), the controller 250 confirms that the recording paper 1a is present by the registration sensor 240 and sends a printer ready signal to the host computer 129, Wait for the record information to be sent. After receiving the ready signal, the host computer 129 sends the record information for one recording width (E2) and waits for the next ready signal. The printer scans the recording head 205 based on the recording information and gives a recording driving signal, and forms an image on the recording paper 1a by the above-described ink jet recording method.

Since the recording surface to be recorded on the recording paper is the outer surface of the roll paper, the direction in which the recording paper 1a absorbs ink and curls (the ink surface is concave) and the recording paper 1a
Will cancel each other out.

When the print head 205 finishes the printing scan and returns to the home position, the paper feed motor 230 is driven to rotate, and the print paper 1a is again moved by the print head width (E2).
And the ready signal is transmitted and received in the same manner as described above, and the next printing scan is continued. The discharge roller pairs 203 and 204 are driven by the drive motor 230 of the transport roller pairs 201 and 202, and are about 2% faster than the transport roller 201, and the rotational force is transmitted by the slip clutch as described above. Therefore, while the recording paper 1a is sandwiched between both roller pairs, the feed amount (speed) of the recording paper 1a is
The recording paper 1a is always taut in the recording unit while being determined by the reference numeral 1,202.

The recording range of the recording paper 1a is 2 mm around the standard paper size in consideration of expansion and contraction due to the humidity of the paper, deviation and skew caused by paper feeding and conveyance.
(FIG. 17).

The host computer transmits recording information of a predetermined size, and notifies the printer controller 250 that the transmission of the information of one page has been completed. As shown in FIG. 17, the controller 250 conveys the trailing edge of the recorded page to 2 mm (W) in front of the recording width, and waits for recording of the next page. When the next recording is performed in that state,
A 4 mm gap is secured between pages. Then, during the recording of the second sheet, the middle of the 4 mm gap is stopped at the position of the cutter 260 while the recording sheet 1a is being conveyed, and the cutting motor is driven to cut the recording sheet 1a. In order to perform this cutting sequence efficiently, the interval between the cutter 219 and the cutter-side nozzle of the recording head 205 is set to an integer (n) of the recording width (E2) +2 mm. That is, the sequence is such that the cutting is performed after the n-th paper feed of the next page is stopped.

The cut recording paper 1a (although it has been cut to a predetermined size) falls onto a tray 262 disposed below the cutter 260, and the recording paper 1a on which image information is sequentially recorded is thereafter dropped. The sheets are ejected and stacked.
Here, the cutter 260 is a rotary cutter here.
This is a mechanism for cutting the recording paper 1a between a blade 263 fixed to the main body and a blade 264 rotated around a rotation axis at both ends by a motor (not shown).

According to the above sequence, the last page is not ejected. However, a cutting command can be generated, if necessary, to cut and eject the sheet. That is, the controller 250 sets the rear end of the page to the cutter 2 by using a command from the host computer 129, an input from a paper discharge switch (not shown) provided in the apparatus main body, or the like as a trigger.
The sheet is conveyed to the position 60, and the recording paper 1a is cut. Thereafter, the feed motor 19 and the paper feed motor 230 are reversed, and the recording paper 1a is turned off until the registration sensor 240 is turned off.
Can be stopped again when the leading end of the recording paper 1a is 2 mm ahead of the recording unit, and control can be performed so as to wait for the next recording operation in the same manner as when the cartridge 2 is set.

When the printer carriage 207 moves forward, the document image data corresponding to the print width E2 of the recording head 205 is continuously recorded in a belt shape during the period from position b to position c shown in FIG. I do.

The position a is defined by the printer carriage 20.
Numeral 7 denotes a home position HPT which moves and reaches in the direction of arrow T in FIG. 11, and when the printer carriage 207 moves back, a light-shielding plate 211 provided below the carriage 207 causes a printer main scanning home position sensor 212 to move.
Is a position where light is shielded. The position b is a recording start position, and as shown in FIG. 16, the printer carriage 207 is accelerated by the printer main scanning motor 209 from the position a at a predetermined acceleration to have a constant speed. The position c is a recording end position. Further, the d position is decelerated at a predetermined deceleration from the recording end position c, and the printer carriage 207 is decelerated.
Is the stop position. The positions c and d change depending on the size of the image data.

Here, the printer main scanning motor 209 is a stepping motor having a step angle of 1.8 degrees, the deceleration of the driving system is 1, and the diameter of the pulley 213 fixed to the rotating shaft of the printer main scanning motor 209 is 10. .5mm
When one pulse is input to the printer main scanning motor 209, the printer carriage 207 moves by 0.165 mm.

From the above values, the printer carriage 207
16 is moved by the amount shown in FIG. 16, the number of step pulses applied to the printer main scanning motor 209 is as follows: a position → b position P1 = 182 pulses... 30 mm b position → c position P2 = 1273 pulses.
In the case of 10 mm 1801 pulses In the case of A3 size of 297 mm From position c to position d P3 = 182 pulses ... 30 mm.

The paper feed motor 230 is a stepping motor having a step angle of 3.75 degrees, and the pulley 231 fixed to the rotating shaft of the motor 230 has a diameter of 26.
mm, when one pulse is input to the paper feed motor 230, the recording paper 1a moves by 0.85 mm. When 10 pulses are input, the recording paper 1a moves by the same distance as the recording width E2 (8.5 mm). At this time, when the recording paper 1a is step-fed with the recording width E2, in order to cover the entire area of the document, the number N of the step feeding of the recording paper 1a is N = 35 for A4 (297 mm). (420 mm), N = 50 times.

FIG. 18 is a block diagram showing a schematic configuration of a recording apparatus having a reading unit (reader) according to this embodiment. As shown, a host computer 129 which is an external device inputs image data from the reading unit 108. In addition, the image data can be output to the printer unit, and the image can be recorded on the recording paper. Note that, in FIG. 18, the same parts as those described above are denoted by the same reference numerals, and description thereof will be omitted.

The reader controller 130 includes the reading unit 1
08 is a controller for controlling the entire device, such as a CPU 401 such as a microprocessor, a ROM 402 storing a control program of the CPU 401 and various data,
A RAM 403 used as a work area 401 is provided. Reference numeral 250 denotes a printer controller which controls the entire inkjet printer unit, and is used as a work area of the CPU 501 such as a microprocessor, a ROM 502 for storing a control program of the CPU 501 and various data, and a work area of the CPU 501, like the reader controller 130. RAM for storing various data
503 and the like.

FIGS. 19 and 20 are flowcharts showing an image reading process in the reading unit 108. A control program for executing this process is stored in the ROM 402. This process is started when an image reading instruction is input from the host computer 129. First, in step S1, the original size specified by the host computer 129 is input. Next, the process proceeds to step S2 to check whether the printer controller 250 is busy, that is, whether the printer unit is printing. If the printer unit is not printing, the process proceeds to step S6, and based on the control conditions of the main scanning motor 105 stored in the ROM 402, the control conditions of the main scanning motor 105 are changed to, for example, a clock frequency F1 (500 pps) during acceleration / deceleration. , Clock frequency F at constant speed
2 (2000 pps), frequency F when carriage returns
3 (4000 pps) and the number of pulses P1 (1
82 pulses), the number of pulses P2 at constant speed (1273 pulses), and the number of pulses P3 at deceleration (182 pulses) are obtained.
Then, in step S7, the number of step movements N (35 times) of the sub-scanning carriage 106 is read from the table of the ROM 402, and the RAM in the controller 130 is read out.
403 is stored.

On the other hand, if the printer controller 250 is busy at step S2, the process proceeds to step S3, where the starting position of the main scanning carriage 101 is set to A 'as shown in FIG.
Then, the stop position is stored in the RAM 403 so as to be set to D ', and the frequency at the time of starting and stopping is reduced from 500 pps to 100 pps. Next, in step S4, control conditions of the main scanning motor 105 other than those defined in step S3 (similar to step S6) are input from the ROM 402, and then in step S5, the printer controller 250
Is instructed to change the control condition of the printer main scanning motor 209 in the same manner. Thus, the conveyance control of the carriage 207 of the printer unit is changed.

Thus, when the main scanning carriage 101 of the reading unit 108 and the carriage 207 of the printer unit are reciprocatingly driven, the acceleration and deceleration curves are loosened, so
Shock at stop is reduced. In FIG. 25, a chain line indicates a sequence when the main scanning carriage 101 of the reading unit 108 operates alone, and a solid line indicates a sequence when the reading unit 108 and the printer unit operate simultaneously.

Thus, the main scanning carriage 101
When the operation condition is determined, the process proceeds to step S8, and waits until a read start command (RS) for starting reading is input from the host computer 129 to the reader controller 130. When a read start command is input, step S
In step 9, the main scanning motor 105 and the sub-scanning motor 109 are driven to move the main scanning carriage 101 to the home position or the starting position A ′ determined in step S 3, and the sub-scanning carriage 106 is moved by the home position sensor 128. Move to the detected home position. Next, step S10
Then, a voltage is applied to the lamp 102 to light it.

Next, as shown in FIG.
05 according to the control conditions set in step S3 or step S6, 50
Gradually accelerate from 0 pps (A position), approaching distance 30m
It accelerates with 182 pulses corresponding to m. Also, when operating simultaneously with the printer unit, the acceleration gradually increases from 100 pps (A 'position) and accelerates with the number of pulses (364 pulses) corresponding to the approach distance (for example, 60 mm). When the acceleration is completed, the process proceeds to step S12, and from the position B to the position C at a moving speed of 2000 pps (1273 pulses).
The reflected light of the original is read by the light receiving element 104 while the main scanning carriage 101 is moved at a constant speed. The band-shaped (8.5 mm × 210 mm) image information thus obtained is sent to the host computer 129. Thus, the read document image data is stored in the image memory (not shown) in the computer 129.

When the constant-speed movement is completed in step S14 and the image reading is completed (position C), the process proceeds to step S15, and the main scanning motor 105 is gradually decelerated from 2000 pps. Also at this time, if the reading unit 108 operates alone, the main scanning motor 105 is controlled so that 182 pulses are set to 500 pps (D position). If the operation is simultaneous with the printer unit, for example, 364
The rotation of the main scanning motor 105 is controlled so that the pulse becomes 100 pps and stops at the D 'position. Next, the process proceeds to step S16, in which the main scanning carriage 101 moves in the home position direction. In this case, the return is performed in the same sequence as the above-described reading, but the speed at the constant speed is increased (4000 pps) to shorten the return time.

That is, in the case of the single operation of the reading unit 108, the main scanning carriage 101 moves five times from the position D to the position C.
It gradually accelerates from 00 pps to 4000 pps, moves at a constant speed of 4000 pps from the position C to the position B, and gradually decelerates from the position B to the position A from 4000 pps to 500 pps. Also, when operating simultaneously with the printer unit, from the D 'position to the C position, 100 pps → 4000 p.
Gradually accelerates to ps, 4000p from position C to position B
Moves at a constant speed of ps, 4000p from position B to position A '
The speed is gradually reduced from ps to 100 pps. At this time, the main scanning carriage 101 is returned to the home position or the starting position by inputting the same number of pulses to the main scanning motor 105 as the total number of pulses input at the time of reading (1637 pulses when the reading unit is operated alone). be able to.

In step S17, the main scanning carriage 101
Is returned to the start position, the process proceeds to step S18, where it is determined whether an instruction to change the control of the main scanning motor 105 has been input from the printer controller 250. If an instruction to change the input has been input, the process proceeds to steps S19 and S20.
Then, similarly to step S4, the control condition of the main scanning motor 105 is changed.

Then, the process proceeds to a step S21, wherein the memory 403
In step S22, N = N-1 is calculated. If N = 0 is not satisfied in step S22, the process proceeds to step S23, where the pulse frequency of the sub-scanning motor 109 is 500 pps and the pulse number is 10 pulses. Enter As a result, the sub-scanning carriage 106 has a reading width E1 (8.5).
mm) in the sub-scanning direction (X-direction) by the same distance as that in step S11, and proceeds to step S11.

If N = 0 in step S22, the process proceeds to step S24, where the lamp 102 is turned off, and step S25
Then, a pulse is input to the sub-scanning motor 109 at a pulse frequency of 500 so that the rotation direction of the motor 109 is reversed. As a result, in step S26, the sub-scan carriage 1
Reference numeral 06 moves in the direction opposite to the reading direction. When the home position sensor 128 detects that the sub-scanning carriage 106 has reached the home position, step S27 is performed.
To end the reading of the document image
29 and the process is terminated.

By executing the above processing routine,
The reading of the entire area (A4 size) of the original specified by the host computer 129 can be realized, and the read image data is stored in the image memory of the host computer 129.

<Cartridge Extraction Sequence> When the operator removes the roll paper cartridge 2 set in the main unit, the cartridge 2 of the recording paper 1a is removed.
Is locked by the above configuration,
Regardless of the power on / off of the main unit,
The cartridge 2 cannot be removed. The removal of the cartridge is performed according to the following sequence when the power supply of the main unit is turned on.

When a command to remove the roll paper cartridge 2 is issued from the host computer 129 to the printer controller 250, the printer controller 250 causes the paper feed sensor 1 into which the cartridge 2 of the recording paper 1a has been inserted.
3 and the output signal (presence / absence of paper) of the registration sensor 240 is checked, and the roll paper cartridge 2 is extracted in one of the following three sequences according to the signal.

Paper feed sensor 13 and registration sensor 24
0 indicates that no paper is detected. The printer controller 250 looks at the output of the paper feed sensor 13 and, if it determines that there is no recording paper 1a, turns on the plunger 26 for controlling the up and down movement of the lock arm 24 shown in FIG. As a result, the lock arm 24 is lowered and the lock of the cartridge 2 is released, and the roll paper cartridge 2 is released.
Is pushed out of the cartridge 2 by the pushing spring 27. However, in this state, since the cartridge 2 is not completely removed from the main unit, the signal of the lock arm detection sensor 28 remains ON, and
The printer controller 250 cannot execute the next command. Therefore, it is necessary to completely remove the roll paper cartridge 2 from the main body device and turn off the signal of the lock arm detection sensor 28.

In the case where the paper sensor 13 has paper and the registration sensor 240 has no paper. Printer controller 250
However, if it is determined that the recording paper 1a is present at the paper feed sensor 13, the recording paper 1a is rewound to a predetermined position D as shown in FIG. From the main unit. The position D is a position at which the recording paper 1a is moved to the cartridge 2 side by 4 to 8 mm after the paper feed sensor 13 detects the leading end of the recording paper 1a, and is a position where the recording paper 1a is completely hidden by the cartridge 2. And the position where the recording paper 1a is held between the paper feed roller 4 and the pinch rollers 5 and 6. This position is controlled by the number of pulses supplied to the feed motor 19, but varies in the range of 4 to 8 mm as described above depending on the diameter of the roll paper 1.

Feed sensor 13, registration sensor 240
Are both detecting the presence of paper. If the printer controller 250 determines from the output signal of the registration sensor 240 that the recording paper 1a is present at the sensor 217, there is a possibility that the recording paper 1a has already been recorded, so the recording paper 1a is rewound. Before executing the process, the recording paper 1a located at the nozzle portion (roll paper cartridge 2 side) of the recording head 205 is transported to the cutting position by the cutter 260 and cut. Thereafter, the recording paper 1a is rewound into the cartridge 2 according to the following sequence, and then the roll paper cartridge 2 is removed.

<Cartridge Extraction Sequence when Paper Is Empty> When the recording paper 1a is running low while the recording paper 1a is being conveyed and the reflection type paper feed sensor 13 detects the paper empty mark on the back of the recording paper 1a, the above-described cartridge is removed. The cartridge 2 is extracted from the main unit according to any one of the three sequences described in the extraction sequence.

The paper-out detecting mechanism includes a black paper-out mark printed in advance on the back surface of the recording paper 1a and a paper feed sensor 13 installed near the roll paper transport window 2d of the recording paper 1a of the roll paper cartridge 2. And a total reflection plate 7d (FIG. 12) provided on a paper feed guide facing the paper feed sensor 13 in the transport path of the recording paper 1a. Recording paper 1a
The paper-out mark on the back side of the recording paper is set so that even if the paper-out mark is detected by the paper feed sensor 13 in the middle of the recording, the recording paper is in a state of being out of paper during the current recording and the recording becomes impossible. Is printed linearly from the position where recording can be performed to the end to the rear end of the recording paper 1a. Note that recording paper 1
The rear end of “a” is attached to the core of the roll 1.

The output signal of the paper feed sensor 13 when the recording paper 1a is being conveyed may be in the following three ways according to the position of the recording paper 1a in the conveyance path. The case where the leading end of the recording paper 1a has not reached the area that can be detected by the paper feed sensor 13 and receives the reflected light of the total reflection plate 7d. Recording paper 1a
Is detected by the paper feed sensor 13 and diffused light is received by the white surface of the recording paper 1a. When receiving the diffused light of the black paperless mark printed on the back surface of the recording paper 1a. Above 3
It is on the street.

In these three types, the output level of the paper feed sensor 13 is clearly divided into three levels, so the printer controller 250 determines whether the output of the paper feed sensor 13 is due to the total reflection plate 7d or not. There is no erroneous recognition as to whether the light is due to the light reflected from the white surface of the paper 1a or the light reflected from the no-paper mark (black).

Also, while the recording paper 1a is being conveyed,
When the paper feed sensor 13 detects the black paper-out mark, the recording paper roll 1 is removed from the main body in accordance with the sequence described in the above-described cartridge 2 removal sequence. However, if a paper-out mark is detected during the recording, the cartridge 2 is removed after the recording is completed.

After that, the new recording paper roll 1 is stored in the cartridge 2 by the above-described method, and then the cartridge 2 may be set in the main body according to the cartridge setting sequence described above. The above description can be applied to a cartridge inserted into another cartridge insertion slot.

FIGS. 21 and 22 are flow charts showing the normal processing after the power supply of the ink jet printer unit of this embodiment is turned on.

When the power of the apparatus is turned on, step S31 is executed.
Then, the initialization process of the work area of the RAM 503 and the process of raising the paper feed roller 4 are performed. Next, the process proceeds to step S32, and determines whether or not the position sensor 28 provided in the insertion port 51 is on.
In step 3, it is checked whether or not the recording paper size of the cartridge 2 is detected by the size detection sensor 308. If so, it indicates that the cartridge 2 is mounted in the insertion slot 51, so that it is determined in step S34 that the cartridge 2 is present (the corresponding flag is turned on), and the recording paper size is stored in the RAM 503. I do.

On the other hand, if the cartridge 2 is not in the insertion slot 51 or the cartridge 2 is not completely installed, the process proceeds to step S35, where the position sensor of the other insertion slot is turned on and the recording paper size is detected. To see if If a cartridge is mounted in another insertion slot and the recording paper size can be detected, the process proceeds to step S37,
The recording paper size is stored, and it is determined that there is a recording paper in the insertion slot, and for example, a flag is turned on. Here, when the cartridge is not installed in either the insertion slot 51 or another insertion slot, the process proceeds to step S44, and waits until the cartridge is installed in any of the insertion slots. This processing will be described later. In this case, when the cartridge 2 is mounted, the mounting of the cartridge in the other insertion slot is not checked. However, assuming that the cartridge is mounted in both the insertion slots, the mounting of the two cartridges is performed. May be checked.

If a cartridge is installed in either the insertion slot 51 or another insertion slot, the flow advances to step S38 to check whether or not an instruction to remove the cartridge has been issued from the host computer 129 or the like. If so, the flow advances to step S39. Then, a cartridge removal process is executed. This processing is performed as described above.

When the change of the recording paper roll is instructed in step S40, the process proceeds to step S41, and the processing for changing the recording paper used for recording is performed. Then, step S4
When a print instruction is input in step 2, the process proceeds to step S43, and print processing shown in the flowcharts of FIGS. 23 and 24 is executed.

If the cartridge has not been inserted into either the insertion port 51 or any of the other insertion ports, the flow advances to step S44 to determine whether the position sensor of either the insertion port 51 or any of the other insertion ports is turned on. Check whether the cartridge is inserted into one of the insertion slots. For example, in the case of the insertion slot 51, when the cartridge 2 is inserted, the position sensor 28 is once turned on as shown in FIG. 7, and is inserted until the cartridge 2 reaches the stopper 31, and is completely inserted. It turns off again when attached. In this state, the recording paper size of the cartridge 2 is read by the size detection sensor 308 (step S46).

Then, the process proceeds to a step S47, wherein the plunger 3
Then, the paper feed roller 4 is moved downward to clamp the recording paper as shown in FIG. 10, and in step S48, the feed motor 19 is driven to rotate to feed the recording paper 1a into the transport path. . The above processing is similar to the case of the cartridge 2 in the insertion port 51, even when a cartridge is mounted in another insertion port, by detection by a corresponding sensor and transport processing using a paper feed roller, a feeding motor, and the like. You can do it. Although this will not be particularly described in the following description, it goes without saying that the transfer processing and the like for the cartridge 2 and the other insertion port can be similarly performed.

When the leading edge of the recording sheet is pulled out of the cartridge and reaches the position of the pair of conveying rollers 201 and 202, the sheet feeding motor (printer sub-scanning motor) 230 is driven to rotate, and the recording sheet is moved to the recording head. 205
In the direction of the recording position. In step S50, when the registration sensor 240 detects the leading end of the recording paper, the process proceeds to step S51, and further proceeds to the paper feed motor 2
30 is driven to rotate to convey the leading end of the recording paper to a position indicated by W in FIG. As described above, this can be adjusted by the number of driving steps of the paper feeding motor 230 after the recording paper is detected by the registration sensor 240. As a result, the printer unit becomes printable (print ready).

Next, the print processing in the printer of this embodiment will be described with reference to the flowcharts of FIGS.

First, in step S61, it is checked whether or not a recording sheet of the size to be recorded is at the recording position. If the recording sheet is not at the recording position, the flow advances to step S62 to output a not-ready signal to the host computer 129. It notifies that the recording paper of the desired size is not at the recording position. Thus, the above-described cartridge replacement or recording paper change processing is executed as necessary.

If the desired recording paper is at the recording position, the flow advances to step S63 to send a ready signal to the host computer 12.
9 and the host computer 12 in step S64.
Wait for input of print start instruction from step 9. When the print start instruction is input, the process proceeds to step S65 to check whether the controller 130 of the reader unit is busy. If the controller 130 is busy, the process proceeds to step S66, where the start position and the stop position of the carriage 207 are set to a ′,
d 'position (FIG. 25), and the control condition of the main scanning motor (carriage motor) 209 is stored in the ROM 50 in step S67.
Read from table 2. This control condition is the same as that described for the control of the main scanning motor 105 of the reader unit. Then, in step S68, the control unit instructs the reader controller 130 to change the control condition of the main scanning motor 105. As a result, the processing in steps S18 to S20 described above is executed, and the main scanning motor 105 for reading an image is read.
Is changed, and the process proceeds to step S69.

On the other hand, when the reading unit 108 is not operating in step S65, as shown in FIG.
The control condition is set such that the position and the stop position are set to the d position and control is performed so as to gradually accelerate from 500 pps. Thus, the process proceeds to step S69, where the carriage 207 is moved to the corresponding starting position, and the rotation driving of the carriage motor 209 is started under the corresponding acceleration condition. In step S70, a transfer request signal (video request (VR) signal) of the recording data is output to the host computer 129 according to the timing calculated from the recording start position (b), the current position of the carriage 207, and the driving frequency of the carriage motor 209. I do. As a result, the host computer 129
When the VR signal is received, print data for one print width (E2) is output at a predetermined timing. This data is received in step S72.

In step S73, the carriage 207 reaches the position b, and the carriage 207 is driven at a constant speed (2000p).
When ps) is started, the process proceeds to step S74, in which the print data received from the host computer 129 is output to the print head 205 in synchronization with the movement of the print head 205, thereby printing the image serially. Then, when the constant speed driving of 1273 pulses is performed in step S75, (1
The process proceeds to step S76 (when the recording for the scan is completed and the position c is reached), and the carriage 207 is decelerated. Even during this deceleration, as described in the control of the main scanning motor 105 of the reading unit 108, if the printer unit is operated alone, the speed is reduced from 2000 pps to 500 pps at the d position, and simultaneous operation with the reader unit is performed. Then 1 at position d '
The carriage motor 209 is controlled so as to be 00 pps (see FIG. 25). Note that the time between the above-mentioned VR signal and the reception of the recording data is set to be the time when the recording head 205 reaches the recording start position b.

Next, the operation proceeds to step S77, where the carriage 2
In order to return 07 to the start position, the carriage motor 209 is rotationally driven in the reverse direction. Also in this case, if the printer unit is operated alone, from position d to position c, 500 pps → 4
Accelerates gradually to 000 pps, from position c to position b 4
Driving at a constant speed of 000 pps, 40 from position b to position a
The speed is gradually reduced from 00 pps to 500 pps. In addition, in the case of simultaneous operation with the reader unit, the acceleration gradually increases from the position d 'to the position c from 100 pps to 4000 pps, and c
It is driven at a constant speed of 4000 pps from the position to the position b, and gradually decelerated from the position b to the position a ′ so as to be 4000 pps → 100 pps. In this case, the carriage 207 can return to the original starting position by applying the same number of pulses as the number of pulses applied to the carriage motor 209 during recording.

When the carriage 207 returns to the starting position in this manner, the process proceeds from step S78 to step S79, and the recording paper is transported in the paper discharging direction by a length (E2: 8.5 mm) corresponding to the recorded amount. When the recording sheet is conveyed, in step S80, when the cutting position of the previous page reaches the cutting position by the cutter 260, the process proceeds to step S81, in which the cutting motor 261 is rotated to drive the cutter 260, and the recording sheet is The cutting is performed at the cutting position as shown in FIG. This eliminates the need for a special recording paper transporting process for cutting the recorded recording paper portion and a rewinding process when recording is performed continuously, so that the recording process can be performed at high speed.

Next, in step S82, it is determined whether or not the recording process for one page has been completed.
Proceed to 6. If recording of one page is not completed, step S8
The program proceeds to step S3, where it is determined whether or not a drive change instruction for the carriage motor 209 has been input from the reader controller 130. If the change instruction has not been input, the flow advances to step S69 to start scanning the carriage 207 for the next recording. On the other hand, when the change instruction is input, the process proceeds to step S84, and similarly to steps S66 and S67 described above, the process proceeds to step S84.
At 84 and S85, the control condition of the carriage motor 209 is changed, and the scanning start position of the carriage 207 is set to the a 'position, and the process proceeds to step S69.

When the recording process for one page is completed, the process proceeds to step S86, where a discharge instruction is input from the host computer 129 or the discharge switch 265 of the printer is operated, and the recorded data is recorded. Cutting recording paper,
When the paper ejection is instructed, the process proceeds to step S87, in which the recorded recording paper is conveyed to a cutting position by the cutter 260, and the cutter 260 is driven by the cutting motor 261 to cut. Next, the paper discharge rollers 203 and 204 are driven to rotate to discharge the cut recording paper, and the plunger 30 (for the recording paper 1a) is turned off in step S89, and the feed motor 19 is driven to rotate. Then, the recording paper is rewound toward the cartridge 2 until the registration sensor 240 stops detecting the recording paper.

<Description of Bubble Jet (FIG. 26, FIG. 2)
7)> In this embodiment, the recording head has been described as a recording head of a general ink jet recording method, but a recording head 205 of a serial type bubble jet recording method, which is one of the ink jet recording methods, will be described.

FIG. 26 shows the recording head 2 constituting the recording means.
It is explanatory drawing of the disassembly structure of No. 05, Comprising: (a)-(g) of FIG.
FIG. 4 is an explanatory diagram of the bubble jet recording principle. In addition, about the typical structure and principle, for example, US Pat.
Nos. 723,129 and 4,740,796.

In FIG. 26, reference numeral 205a denotes a heater board, which is an electrothermal converter (discharge heater) on a silicon substrate.
205b and an electrode 205c made of aluminum or the like for supplying power thereto are formed and disposed. A liquid path (nozzle) 2 for the recording liquid is supplied to the heater board 205a.
It is configured by bonding a top plate 205e having a partition for partitioning 05d. At a predetermined position of the apparatus, an ink cartridge for supplying ink to the recording head 205 is exchangeably mounted.

The ink supplied from the ink cartridge via a conduit is filled into a common liquid chamber 205g in the recording head 205 through a supply port 205f provided on the top plate 205e, and the common liquid output 205g supplies each nozzle 205
Guided into d. These nozzles 205d are provided with ink discharge ports 205h.
h is formed at a predetermined pitch in the sheet conveying direction so as to face the recording sheet of the recording head 205.

In this embodiment, the recording head 20 having the above-described configuration is used.
5 is mounted on a reciprocally movable carriage, and performs recording by ejecting and flying ink from the recording head 205 in synchronization with the movement of the carriage. Here, the principle of ink flying in the bubble jet recording method is shown in FIG.
7 (a) to 7 (g).

In the steady state, as shown in FIG.
The surface tension and the external pressure of the ink 340 filled in the nozzle 205d are balanced at the ejection port surface. When the ink 340 is caused to fly in this state, power is supplied to the electrothermal converter 205b in the nozzle 205d, and the ink in the nozzle 205d exceeds the nucleate boiling and causes a rapid temperature rise.
Then, as shown in FIG. 27 (b), the electrothermal transducer 20
The ink adjacent to 5b is heated to cause minute bubbles
And the ink in the heated portion is vaporized to cause film boiling,
As shown in FIG. 27C, the bubble 341 grows rapidly.

When the bubble 341 grows to the maximum as shown in FIG. 27D, the ink droplet 342 is pushed out from the discharge port in the nozzle 205d. And the electrothermal converter 20
When the power supply to the nozzle 5d is completed, as shown in FIG.
The ink droplet 342 flies from the ejection port due to the growth and shrinkage of the bubble due to the cooling and shrinkage by the air bubble 40. Further, as shown in FIG. 27 (f), the ink comes into contact with the surface of the electrothermal converter 205b and is rapidly cooled, and the bubbles 341 disappear or shrink to a volume that can be almost ignored. When the bubble 341 contracts, as shown in FIG. 27 (g), the common liquid chamber 205 is formed in the nozzle 205d by capillary action.
g to supply ink and prepare for the next energization.

Accordingly, the carriage on which such a recording head is mounted is reciprocated, and in synchronization with this movement, an electric current is supplied to the electrothermal converter 205b in accordance with an image signal to thereby form an ink image on the recording sheet. Is recorded.

In addition to the structure of the recording means, in addition to the combination of the above-described discharge port, liquid path, and electrothermal converter, US Pat.
No. 3, JP-A-59-123670 and the like can also be used.

Further, the above-mentioned recording means may supply ink to the recording head from an ink cartridge mounted on the recording apparatus, or provide an ink storage chamber in the recording head so that the ink in the ink storage chamber is depleted. In such a case, a replaceable recording head that replaces the recording head may be used.

Further, the recording apparatus of the present invention has
In addition to being used as a printer as an image output terminal of an information processing device such as a computer, it is used as a copying device combined with a reader or the like, and further as a facsimile device having a transmission / reception function.

In this embodiment, the recording head of the recording means is a recording head which performs recording by an ink jet method. However, the present invention is not limited to this. For example, a heat sensitive method, a thermal transfer method, a wire dot recording method Needless to say, a recording head that performs recording by a method or an electrostatic recording method may be used.

The present invention may be applied to a system constituted by a plurality of devices or to an apparatus constituted by a single device. Needless to say, the present invention can also be applied to a case where the present invention is achieved by supplying a system or an apparatus with a program for executing the processing specified by the present invention.

Although the above-described embodiment has been described in the case of reading recording and scanning reading of the shuttle type, the reading side reads the entire paper width with the photoelectric conversion element (the main scanning is performed electrically) and the printer side reads the whole paper width. The present embodiment can also be applied to a printer in which the printer carriage scans vertically and horizontally on paper fixed on a flat surface without the paper transport unit (the same as the reading unit of the embodiment). Further, the recording means is not limited to the ink jet system of the present embodiment.

As described above, according to the present embodiment, when the original reading and the image recording operate independently, and when the operations are completely synchronized (including the copy mode), each operation is performed in a short time. When reading and recording are performed simultaneously and asynchronously by using a sequence that can be completed, the image quality is always prioritized by changing to a sequence that minimizes the vibration caused by starting and stopping each scanning object. Good read images and recorded images can be obtained.

In this embodiment, when the reading unit 108 and the printer unit operate simultaneously, the driving conditions of both the main scanning motor 105 of the reading unit 108 and the carriage motor 209 of the printer unit are changed. The present invention is not limited to this, and the control condition of either one of the motors may be changed.

[0133]

As described above, according to the present invention, when the image reading unit and the image recording unit operate at the same time, the mutual influence is reduced by reducing the vibration and the like accompanying the operation of the operation unit of each unit. And it is possible to read and record a good image by reducing the number of images.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a configuration of a reading and recording apparatus including a reading unit and a printer unit according to an embodiment.

FIG. 2 is an external perspective view illustrating a configuration of a recording paper roll used in a printer unit of the embodiment and a cartridge that stores the recording paper roll.

FIG. 3 is a side sectional view of a cartridge used in the printer unit of the embodiment.

FIG. 4 is a front sectional view of a cartridge used in the printer unit of the embodiment.

FIG. 5 is a diagram illustrating a state where a cartridge is mounted on the printer unit according to the embodiment.

FIG. 6 is a diagram illustrating a state where the mounting of the cartridge on the printer unit according to the embodiment is completed.

FIG. 7 is a diagram illustrating a mechanism for mounting and locking a cartridge in the printer unit according to the embodiment.

FIG. 8 is a view for explaining a mechanism for raising / lowering a transport roll and a feed pulley shown in FIG. 5;

FIG. 9 is a diagram for explaining the operation of the one-way bearing.

FIG. 10 is a diagram for explaining conveyance of a recording sheet by cooperation between a sheet feeding roller and a pinch roller.

FIG. 11 is an external perspective view illustrating a configuration of a recording unit of the printer unit according to the embodiment.

FIG. 12 is a side view illustrating a configuration of a printer unit according to the embodiment.

FIG. 13 is a side view illustrating a configuration of a reading unit of the reading and recording apparatus according to the embodiment.

FIG. 14 is a top view illustrating a configuration of a reading unit of the reading and recording apparatus according to the embodiment.

FIG. 15 is an external perspective view illustrating a configuration of a reading unit of the reading and recording apparatus according to the embodiment.

FIG. 16 is a diagram illustrating a control state of each main scanning motor in a reading unit and a printer unit of the reading and recording apparatus according to the embodiment.

FIG. 17 is a diagram illustrating a recording state in a recording unit of the printer unit according to the embodiment.

FIG. 18 is a block diagram illustrating a schematic configuration of a reading and recording apparatus according to an embodiment.

FIG.

FIG. 20 is a flowchart illustrating an image reading process in a reading unit of the reading and recording apparatus according to the embodiment.

FIG. 21

FIG. 22 is a flowchart illustrating main processing in the printer unit according to the embodiment.

FIG. 23

FIG. 24 is a flowchart illustrating print processing in a printer unit according to the embodiment.

FIG. 25 is a diagram for explaining the control state of each main scanning motor in the reading unit and the printer unit of the reading and recording apparatus according to the embodiment, when operating independently and simultaneously.

FIG. 26 is a diagram for explaining a disassembled configuration of a recording head by an inkjet method.

FIG. 27 is a diagram for explaining the principle of recording using a bubble jet.

[Explanation of symbols]

 Reference Signs List 1 recording paper roll 1a recording paper 2 recording paper cartridge 4 paper feed roller 5, 6 pinch roller 13 paper feed sensor 19 feed motor 24, 25, 27, 29 spring 26, 30 plunger 28 position sensor 51 insertion port 102 lamp 104 light reception Element 105 Main scanning motor (reading unit) 108 Reading unit 109 Sub-scanning motor (reading unit) 126 Main scanning home position sensor 128 Sub-scanning home position sensor 129 Host computer 130 Reader controller 201, 202 Transport roller pair 203, 204 Paper discharge roller Pair 205 Recording head 207 Carriage 209 Carriage motor (printer main scanning motor) 212 Home position sensor 230 Paper feed motor (printer sub-scanning motor) 240 Registration sensor 260 Cutter 261 Cutting motor 308 Size detection sensor 401, 501 CPU 402, 502 ROM 403, 503 RAM

Claims (4)

(57) [Claims] 1. A reading and recording apparatus in which an image reading section for reading an image of a document and a recording section for recording an image on a recording medium are arranged in one housing, wherein the image reading section reads the image. A reading head for electrically reading, and reading scanning means for relatively scanning the reading head with respect to the document, wherein the recording unit includes: a recording head for performing recording; Recording scanning means for relatively scanning with respect to the recording medium, and when the image reading by the image reading section and the recording by the recording section are simultaneously performed ,
Scanning of the read head, and
Accelerating at least one of the scanning of the recording head by
The change in speed during deceleration is represented by an image by the image reading unit.
One of reading of data and recording by the recording unit
A reading and recording apparatus comprising control means for performing control so as to make it looser than when the reading and recording are performed. Wherein said control means, said read scan means <br/> good Ru scanning of the read head, and the acceleration of both the scanning of the recording the recording head Ru good <br/> the scanning means and the deceleration Smell
2. The reading and recording apparatus according to claim 1, wherein the speed change is controlled. Wherein the recording head is reading apparatus according to claim 1 or 2, wherein the ink is ejected is ink jet recording head for recording an image. Wherein said recording head has an electrothermal transducer for ejecting the ink, according to claim 3, characterized in that by generating bubbles in ink to eject the ink by the electrothermal transducer 2. The reading and recording device according to claim 1.