JPH0313781B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field of the Invention] The present invention relates to a copying apparatus having an information reading section and a recording section.

[Prior art]

The information on the manuscript is read by the information reading section,
Copying apparatuses that record on a copying member using a recording section are widely known, but such copying apparatuses are usually housed in a single housing.

[Problems to be solved by the invention]

When the information reading section and the recording section are housed in one housing like this, it is said that it is very difficult to perform internal inspections, etc. because the mounting positions of each part to the housing are fixed. It has its drawbacks.

[Means and actions for solving problems]

Therefore, in the present invention, the information reading part and the recording part are housed in separate housings to facilitate internal inspection of each part, and by making them into units, it is possible to handle and convert each unit. Furthermore, by making the information reading section movable relative to the recording section, inspection of the recording section, etc. is made easier, thereby eliminating the above-mentioned drawbacks of the conventional apparatus.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view showing a copying apparatus 11 to which the present invention is applied, and this copying apparatus 11 includes a reading unit 12 for reading information on a document, and a recording unit 13 for recording information on recording paper. It is made up of.

At the top of the reading device 12, as shown in FIG.
5, it is configured to be pressed against the document table 14.

Adjacent to the document table 14 are two display windows 1 having pointers 18, 19 and 20, 21, respectively.
6 and 17, and by a mechanism to be described in detail later, the pointer 18 is moved by the knob 22 to the arrow x.
The knob 23 can move the pointer 19 in the x2 direction, the knob 25 can move the pointer 20 in the y2 direction, and the knob 24 can move the pointer 21 in the y1 direction.

The function of the pointer is to instruct the user not to treat information on the document that belongs to an area outside the document table 14 as an extension of the pointer as recorded information.

For example, if we talk about the pointer 18, the area on the arrow F side of the extension straight line 26 of the pointer 18 is masked, and even if the original is placed in this masked area, the information in this part will not be This may not be recorded by some recording devices.

Therefore, when there are four guidelines as shown,
Only the information in the area surrounded by four dotted lines that virtually represent the extension lines of each pointer is recorded by the recording device.

The internal structure of the reading device 12 as described above will be further explained with reference to FIGS. 3 and 4.

3 is a sectional view taken along line 3A-3A in FIG. 1, and FIG. 4 is a sectional view taken along line 4A-4A in FIG. 3, both of which schematically show only the arrangement of the main parts of the device. Three guide rails 30-1, 30-2, and 30-3 are provided in parallel to each other inside the casing 29 of the reading device 12.
A sliding member 31-1 is slidably provided on the guide rail 30-2, and a sliding member 31-2 is provided slidably on the guide rail 30-3. A flat base 32 is fixed to the member 31.

The arms 3 extend upward from both ends of the base 32.
3-1 and 33-2 are extended, and between these arms 33 is a translucent rod-shaped body (a converging light transmitting body) whose refractive index decreases parabolically from the center in the radial direction. ) are arranged in a straight line and a lens 34 is fixed. Incidentally, such a lens is not limited to the above-mentioned convergent light transmitting body, but may be any lens having a linear arrangement of minute lenses capable of obtaining a same-magnification erect image.

A light receiver (for example, CCD) 35 in which a large number of light receiving elements are linearly arranged is arranged on the base 32, and an optical image of the document placed on the document table 14 is transmitted to the light receiver by the lens 34. It is constructed so that the image is formed on 35.

Further, between the arms 33, a rod-shaped lamp 36 is provided which is approximately equal to or longer than the lens 34, and is approximately parallel to the lens 34.
The reflecting mirror 37 is fixed so that the light emitted from the mirror 6 effectively illuminates the document table 14.

The base 32 having such a configuration is connected to the guide rail 30.
Information on the document placed on the document table 14 is sequentially imaged on the light receiver 35 by moving the document table 14 . Therefore, if the clock signal is applied sequentially and the light receiving elements are sequentially read out, a sequential signal obtained by raster scanning the original can be obtained from the light receiver 35.

In this embodiment, an explanation will be given assuming that an A4 size document is scanned with 3000 scanning lines, and one scanning line is divided into pixels by 2100 light receiving elements.

It should be noted that a motor, pulley, and wire are built-in in order to drive the base 32 at a constant speed in the direction of the arrow S on the guide rail 30, or to perform the backward motion as indicated by the arrow R. Since such a drive system is well known, it is omitted from the drawing.

In addition, in the following description, such a base 32,
The light receiver 35, lens 34, and lamp 36 are collectively referred to as an optical head 9.

FIG. 5 shows the pointers 18 and 19 connected to the knobs 22 and
The mechanism driven by this will be explained in more detail.

That is, the guide rail 38 is fixed to the housing 29,
Bases 39 and 40 with pointers 18 and 19 are slidably fixed on the guide rail 38.

As shown in FIG. 5B, these bases 39 and 40 have a cylindrical hole 43 and a ball 4 inserted into this hole 43.
2, and a spring 4 that pushes the ball 42 downward.
4 and a screw 45 for preventing the spring 44 from popping out, and the ball 42 is pushed into a groove 41 provided on the guide rail 38 to prevent the base 40 from rotating on the guide rail 38. It consists of:

A thread 46 is fixed to the base 40, and this thread 46 is connected to pulleys 47, 4 fixed to the housing 29.
8 and 49, it is wound around a pulley 51 fixed to a rotating shaft 50 of a knob 23 rotatably fixed to a housing 29.

Therefore, by rotating the knob 23, the base 4
0 can be moved in the arrow x2 direction. The base 39 is also driven by a similar configuration, and the reference numeral with the suffix -1 indicates this configuration.

Reflector plates 52-
1 and 52-2 are fixed, and the switch SW8 detects when the optical head 9, which has started driving to scan the document, has arrived at a position corresponding to this reflection plate 52, and the light receiver 35 is activated to scan. The read signal is stored in a shift register to be described later.

To explain with reference to FIG. 5C, for example, the light receiver 3
5 is composed of 2100 light-receiving elements, a 2100-bit shift register is prepared, and when the optical head 9 starts driving to scan the document and reaches the bottom of the bases 39 and 40, switch
The pixel signal is detected by SW8, a 2100 clock signal is applied to the light receiver 35, and the pixel signal read from the light receiver 35 is stored in a 2100 bit shift register.

With this configuration, the positions of the reflection plates 52-1 and 52-2 are stored in the shift register, so masking in the x direction can be performed using the output of this shift register.

Further, a pointer 20 for instructing masking in the y direction,
21 also has the same structure as the mechanism for instructing masking in the x direction, so corresponding members are designated by the same numbers with the suffix -1 added.

Therefore, the knob 25 allows the base 39-1 to be moved on the guide rail 38-1, and the knob 24 allows the base 40-1 to be moved on the guide rail 38-1. It is something that can be done.

However, instead of the reflecting plates in the bases 39 and 40, Hall elements (hereinafter also referred to as switches SW6 and SW7) are fixed to the bottom of the base 39-1, respectively. As shown in FIGS. 3 and 5C, a part of the arm 33-2 of the optical head 9 has a Hall element installed on the bases 39-1 and 40-1 when the optical head 9 is moved. A magnet 51-1 is fixed at a position facing the.

Therefore, while the optical head 9 is moving along the guide rail 30 in the direction of the arrow, the magnet 51-
1 faces the Hall elements of the bases 39-1 and 40-1, output can be obtained from the Hall elements, so such switches SW6 and SW
7 can be used to perform masking in the y direction.

The reading device 12 and the recording device 13 as described above are housed in separate housings so as to form a unit. It is movable. In the steady state of the reading device, the reading device 12 is fixed at the position shown in FIG. 1 by being locked by a locking device 28 shown in FIG.

Next, the recording device 13 will be explained in more detail.

An opening 54 is provided in a part of the housing of the recording device 13, and a cassette 53 containing stacked recording papers 55 cut to a predetermined size is housed and fixed therein.

A shaft 5 is attached to the upper part of the cassette 53 installed in the casing.
A paper feed roller 56 fixed to an arm 58 rotatable about 7 is disposed. This paper feed roller 56 is constantly rotating and comes into contact with the top of the recording paper 55 stacked in the cassette 53 only when paper is being fed.When paper feeding is not required, the arm 58 is moved upward. Rotating paper feed roller 5
6 and the recording paper 55 do not come into contact with each other.

Note that the paper feed roller 56 is widely known in copying machines and the like, so a detailed explanation thereof will be omitted.

Reference numerals 59-1 and 59-2 indicate guide plates for guiding the recording paper fed out from the cassette 55, and the recording paper 55 guided by the guide plates 59
is held between the driven roller 60 and the driving roller 61 that constitute the timing roller 10, and is further fed out between the guide plates 62-1 and 62-2, to the outside of the drum 63 that sucks and holds the recording paper 55. It is guided into the opening 65 of the outer drum 64 provided.

To further explain the drive roller 61 with reference to FIG. 6, the drive roller 61 is a shaft 6 rotatably provided between frames 66-1 and 66-2 fixed to the housing.
This shaft 67 is fixed to a shaft 69 via a one-way clutch 68, and this shaft 69 is connected via a clutch 70 to a shaft to which a pulley 71 is fixed. It is.

Since the pulley 71 is constantly driven by a motor (not shown) so that the drive roller 61 rotates in the direction of arrow T shown in FIG. 3, the drive roller 61 turns on (connects) the clutch 70. As a result, it is driven with a predetermined circumferential flux V via the one-way clutch 68.

Since the speed of the drum 63 is higher than the paper feeding speed of the drive roller 61,
If the leading edge of the recording paper sent out is wrapped around the drum 63 and the rear end is still held between the drive roller 61 and the driven roller 60, abnormal tension will be applied to the recording paper 55 and it will tear. Therefore, in this embodiment, the sixth
As shown in the figure, a one-way clutch 68 is provided, and when the recording paper 55 held between the driving roller 61 and the driven roller 60 is pulled by the drum 63, the one-way clutch 68 operates and the pulley 71
The driving roller 61 is configured so that it can rotate at a speed higher than the driving speed.

With this configuration, the drum 63, which has a large effect on the recording speed, can be rotated at high speed to improve the recording speed.

Note that a light emitter 271 is provided on the guide plate 62-2.
These components constitute a paper detector, and the light receiver 272 receives the reflected light emitted from the light emitter 271 when the recording paper passes. This detects the passage of recording paper. Note that such a paper detector may hereinafter be referred to as switch SW1.

The drum 63 has a hollow cylindrical shape, and as shown in FIG. 4, one end is rotatably held by a bearing 74 via a shaft 73 fixed to the drum 63, and the other end is fixed to a holding frame 74. Shaft cylinder 75
The shaft cylinder 75 and the drum 63 are rotatably held relative to each other, and the space between the shaft cylinder 75 and the drum 63 is maintained in an airtight seal.

A pulley 76 is fixed to the end of the shaft 73, and a belt 80 is wound between the pulley 76 and a pulley 79 fixed to the rotating shaft 78 of a motor 77.
By driving the drum 63, the drum 63 is rotated in the direction of arrow D.

A large number of through holes 81 are provided in the circumferential portion of the drum 63, and by making the inside of the drum 63 a negative pressure than the atmospheric pressure, the recording paper 55 is attracted to the circumferential portion of the drum 63. It consists of

For this purpose, a hose 82 is connected to the shaft tube 75, and the end of this hose 82 is connected to a suction pump 83.

Therefore, when the leading edge of the recording paper 55 is conveyed to the opening 65 by the timing roller 10 while the pump 83 and motor 77 are being driven, the leading edge of the recording paper 55 is attracted to the drum 63 and is moved to the drum 63.
3 and tries to rotate together with the drum 63. While the area where the leading end is wrapped around the drum 63 is small, the recording paper 55 is fed according to the rotational speed of the timing roller 63, and during this time the recording paper 55 is fed around the drum 63 by the difference between the circumferential speed of the drum 63 and the feeding speed of the timing roller. Although it is slipping, once it is wrapped to a certain extent, the drum 6 rotates at the same speed as the drum 63.
3, and at this time the one-way clutch 68
This causes the drive roller 61 to be in an idling state.

A cylindrical outer drum 64 having a slightly larger diameter than the drum 63 is arranged outside the drum 63. Both ends of the outer drum 64 are open, and the recording paper 55 is placed at the upper end. An opening 65 for drawing in and discharging ink is provided, and a slit 84 is provided on the side for moving an inkjet nozzle, which will be described later.

The outer drum 64 is composed of a fixed drum section 85 and a floating drum 86, and the floating drum 86 is supported by a shaft 87, so that the recording paper 55 is not jammed in the gap between the drum 63 and the outer drum 64. If an accident (jam) occurs in which the floating drum 86 is
It is constructed so that the recording paper 55 can be taken out by rotating it in the direction shown in FIG.

As described above, the inkjet nozzle 88 moves through the slit 84, and this inkjet nozzle is surrounded by a protective cylinder 89 as shown in FIG.
The nozzle head 90 is integrally covered with the nozzle head 90. This nozzle head 90 is fixed on a base 91 so as to be slidable in a direction perpendicular to the rotation axis of the drum 63.

That is, a collar 92 is provided at the rear end of the head 90, and a protrusion 93-- is provided on a portion of the base 91.
1 and 93-2 are provided, and springs 94-1 and 94-2 are mounted between the collar 92 and the protrusion 93. Therefore, although the nozzle head 90 is always energized in the direction of arrow C, a stopper screw 95 is provided on the collar 92 so that the tip of the nozzle head can be placed at a very small distance from the recording paper 55 wound around the drum 63. Adjust the stopper screw 95 as desired.
In this state, the optimum distance for recording on the recording paper 55 by the inkjet nozzle 88 is selected.

On the other hand, the base 91 has three guide rails 9 attached to the rotation center axis of the drum 63 and provided in parallel.
Since the head 90 is fixed to a movable base 99 slidably fixed on the rails 96 to 98, by moving the movable base 99 along the rails 96 to 98. It is possible to move within the slit 84 from one end of the drum 63 to the other end. A tank 100 filled with ink 199 is placed on the movable base 99, and the ink is supplied from the tank 100 to the ink jet nozzle 88 through a pipe 101.

The tank 100 is fixed to the movable base 99 by holding the tank 100 between the free ends of leaf springs 102-1 and 102-2 whose ends are fixed to both sides of the movable base 99. It is something.

Since the moving base 99 is moved by a linear motor, a permanent magnet 103 and a yoke 104 that constitute the linear motor are fixed to a part of the moving base 99.
A coil 105 is provided outside the magnet 9 so as to face the permanent magnet 103 . This coil 105 is connected to the guide rail 98 as shown in FIG.
It is provided in a straight line on a retaining plate 106 provided in parallel with.

Further, as shown in FIG. 7, a shaft 107 is provided at the upper part of the movable base 99 in parallel with the rotational center axis of the drum 63 and extends over almost the entire width of the drum 63. A cam 108 for driving the drum 63 is provided over almost the entire width of the drum 63.

An arm 109 is fixed to the end of this cam 108, and this arm 109 is connected to the connecting arm 11.
0 to a plunger 111 driven by a solenoid 112 and the arm 1
09 is pulled in the direction of arrow E by a spring 113. Since this spring 113 is stronger than the springs 94-1 and 94-2, when the solenoid 112 is not driven, the cam 108 rotates in the direction of arrow E and takes the position shown by the dashed line, and the nozzle head Push down the collar 92 of 90 to the position shown by the dashed line.

In other words, when the solenoid 112 is not driven, the tip of the nozzle head 90 (ink jet nozzle 88) is aligned with the slit 84.
It moves to the outside of the area. Therefore, the outer drum 64 can be easily attached and detached, and the movable base 99 and the base 91 can be attached and detached easily.

Also, the solenoid 112 is energized to move the plunger 1 in the direction of arrow D against the force of the spring 113.
11, the cam 108 rotates to the position shown by the solid line.

In this state, the nozzle head 89 is pulled toward the drum 63 by the force of the spring 94 until the stopper screw 95 and the base 91 come into contact with each other, and the tips of the nozzle head 90 and the ink jet nozzle 88 enter the slit 84.

If the position of the inkjet nozzle 88 could be controlled by controlling the solenoid 112 in this manner, for example, a so-called jam in which the recording paper 55 would become jammed between the drum 63 and the outer drum 64 would occur. If so, the solenoid 112 is driven by the jam detection output to ink jet nozzle 88.
Since the inkjet nozzle 88 can be evacuated, the inkjet nozzle 88 can also be evacuated during maintenance and inspection.
It is possible to prevent damage to the In the following description, the bases 91 and 99, the nozzle head 90, and the ink jet nozzle 88 will be referred to as the recording head 8.

On the recording paper 55 wound around the drum 63 rotating at high speed, there is an inkjet nozzle 8 that moves at a constant low speed along guide rails 96 to 98.
8, the same information as the original is recorded on the recording paper 55 by sequentially applying the signal of the original obtained by the light receiver 35 to the inkjet nozzle 88. It is.

When the recording on the recording paper 55 is completed in this way, the pump 83 is stopped to release the negative pressure inside the drum 63 and the pressure becomes the same as atmospheric pressure, or the negative pressure is brought closer to atmospheric pressure. By doing so, when the recording paper that was attracted to the drum 63 is separated and the leading edge of the recording paper reaches the opening 65, the recording paper 5 is removed.
5 is guided by the guide plates 62-1 and 114, pops out into the discharge paper storage section 115, and is stored there. In this way, even without stopping the pump 83, a lid for introducing outside air into the hose 82 is provided on a part of the hose 82, and opening and closing of this lid is controlled by a plunger to maintain a negative pressure state inside the drum 63. It can be controlled.

A portion of the outer drum 85 is provided with a detector for detecting when the leading edge of the recording paper 55 passes through a portion facing the inkjet nozzle 88, and a portion of the guide plate 114 is also provided with a detector that detects when the leading edge of the recording paper 55 passes through a portion facing the inkjet nozzle 88. A detector 117 for detecting the trailing edge of the paper is provided, and the operation of this detector will be explained in detail in the control explanation below.

As already mentioned, there are 2 on the top of the recording device 11.
There is a book guide groove 27, and the reading device 12 is configured to move along this groove 27, but when inspecting the area around the drum 63 in the recording device 13, follow the two-dot chain line in Figure 3. The reading device 1 as shown in
2 to the top of the storage section 115.

In order to facilitate such inspection, the guide plate 6
One end of the drum 62-1 is rotatably supported by a shaft 118, and when the reading device is moved, the guide plate 62-1 is rotated about the shaft 118 as shown by the dashed line. The drum 63 and its surroundings can be checked in such a state.

With this configuration, it is possible to inspect the recording section from above, replace parts, etc. by simply moving the unit without disassembling the reading section.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments.
It is also possible to use an LED printer or the like that uses an LED array. Furthermore, a type of reading unit that reads images by moving the original can also be used.

〔Effect of the invention〕

As described above, in the present invention, since the information reading unit and the recording unit can be handled as units, installation, movement, and replacement can be easily performed.

Furthermore, since it is movable relative to the information reading unit and recording unit, when a failure occurs in one of them and an internal inspection is required, by moving the unit, only the inside of the unit that requires inspection can be inspected. This makes inspection very easy.

[Brief explanation of the drawing]

1 is a perspective view of a copying apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of essential parts showing the document table in FIG. 1, and FIG. 3 is a sectional view taken along line 3A-3A in FIG.
Fig. 4 is a 4A-4A sectional view of Fig. 1, Fig. 5 shows the drive mechanism of the pointer, A is a partially sectional top view, B is a sectional view of the main part, C is a top view, and Fig. 6 is the drive mechanism. A top view showing the roller; FIG. 7 is a side view showing the recording head;
FIG. 8 is a top view showing the recording head. Here, 6 is a paper quality specification key, 7 is a paper size specification key, 8 is a recording head, 9 is an optical head, 10 is a timing roller, 11 is a copying device, 12 is a reading device, 13 is a recording device, 18 to 21 are Guidelines, 27
is a guide groove, 34 is a lens, 35 is a light receiver, 36 is a lamp, 51-1 is a Hall element, 52 is a reflector,
55 is a recording paper, 56 is a paper feed roller, 63 is a drum, 68 is a clutch, 77 is a motor, 82 is a pump, 88 is an inkjet nozzle, and 90 is a nozzle head.

Claims (1)

[Claims] 1. A copying device that has a reading section that reads image information on a document and converts it into an image signal, and a recording section that records a copy image corresponding to the original image on a recording material based on the image signal output from the reading section. In the apparatus, a reading unit including the reading section, a recording unit separate from the reading unit and including the recording section, and the reading unit and the recording unit are movable relative to each other, and the reading unit and the recording unit are movable relative to each other. A copying apparatus comprising: a guide means for guiding.