JPS6364110B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image recording apparatus that records an image based on a stored image signal.

When recording the same image based on stored image signals on multiple sheets of recording material that are sequentially conveyed,
If the image signals are not read out in accordance with the transport position of the recording material, the image will not be recorded at the correct position on the recording material, and if the same image signal is not repeatedly read out quickly, multiple This causes inconveniences such as the inability to perform high-speed image recording on a sheet of recording material.

The present invention has been made in view of the above points, and
The purpose is to record the same image based on a stored image signal on a plurality of recording materials satisfactorily and efficiently. Conveying means 56, 60, 6 for sequentially conveying along a predetermined conveying path
1, 63, and recording means 88 for recording an image on the recording material conveyed to the image recording position by the conveyance means based on the image signal read from the storage means.
and a discharge means 62- for discharging the recording material on which an image has been recorded by the recording means along a predetermined discharge path.
1, 114, and a first section provided on the conveyance path for detecting the front end of the recording material on which an image is to be recorded, which is conveyed by the conveyance means to the image recording position of the recording means.
a detection means SW2, a second detection means SW3 provided in the ejection path and configured to detect the trailing edge of the image-recorded recording material ejected by the ejection means, and a clock signal serving as a reference for reading out the image signal. generating means 167, 168 for generating image signals, and forming means 170 for forming an address signal for reading an image signal from the storage means based on the clock signal, and the forming means 170 is connected to the first detecting means. Forms an address signal according to the recording material leading edge detection output,
The configuration is such that the initial return is performed in accordance with the recording material trailing edge detection output of the second detection means, and the same address signal is repeatedly formed by the above-mentioned forming means every time a plurality of recording materials are conveyed by the above-mentioned conveying means, and the same address signal is repeatedly formed. an image recording device that repeatedly reads out the same image signal from the storage means in accordance with the received address signal and supplies it to the recording means to record the same image on a plurality of recording materials sequentially conveyed by the conveyance means; This is what we provide.

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 is composed of a reading device 12 for reading information on a document and a recording device 13 for recording information on recording paper. It is something that is present.

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 this 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. There are three guide rails 3 inside the casing 29 of the reading device 12.
0-1, 30-2, 30-3 are provided in parallel to each other, and a sliding member 31-1 is slidably provided on the guide rails 30-1, 30-2. A sliding member 3 is placed on the guide rail 30-3.
1-2 is slidably provided, and such a sliding member 3
1 has a flat base 32 fixed to it.

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 convergent 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 the following description, the base 32, light receiver 35, lens 34, and lamp 36 will be collectively referred to as the 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 reflecting 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. Note that a detailed explanation of such masking will be given later.

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.

Note that a detailed explanation of such masking will be given later.

The reading device as described above is housed in a separate housing from the recording device 13, and is movable on two guide grooves 27-1 and 27-2 provided at the top of the recording device 13. It is something that exists. In the steady state of the reading device, the locking device 2 shown in FIG.
By locking with 8, the reading device 12 is fixed in the position 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 rotated upward. The paper feed roller 56
This is to prevent the recording paper 55 from coming into contact with the recording paper 55.

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 at a predetermined circumferential speed 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 fed out is wrapped around the drum 63 and the rear end is held between the driving roller 61 and the driven roller 60, an abnormal tension is applied to the recording paper 55 and the recording paper 55 is torn. 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 is operated and the pulley 71 is driven. The drive roller 61 is constructed so that it can rotate at a speed higher than the above 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. Fixed 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 on the outer circumferential portion of the drum 63, and the recording paper 55 is attracted to the circumferential portion of the drum 63 by making the inside of the drum 63 a negative pressure than the atmospheric pressure. It is something to do.

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, the leading edge of the recording paper 5 is fed in accordance with the rotational speed of the timing roller while the area where the leading end is wrapped around the drum 63 is small.
5 slips around the drum 63 by the difference between the circumferential speed of the drum 63 and the feed speed of the timing roller 10, but once it has been wound to a certain extent, it is wound around the drum 63 at the same speed as the rotation of the drum 63. The one-way clutch 68 operates and the drive roller 6
1 is in an idle rotation 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 is provided for drawing in and discharging the ink, 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 mentioned 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, the nozzle head 90 is always energized in the direction of the arrow C, but a stopper screw 95 is provided on the flange 92 so that the tip of the nozzle head is 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, and the outside of the moving base 99 is fixed to a part of the moving base 99. A coil 105 is provided so as to face the permanent magnet 103 . This coil 105 is connected to the guide rail 9 as shown in FIG.
8 is provided in a straight line on a retaining plate 106 provided in parallel with 8.

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. This spring 1
13 is stronger than the springs 94-1 and 94-2, so 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 90 Push the collar 92 backward 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 and the negative pressure inside the drum 63 is released and the pressure becomes the same as atmospheric pressure, or the negative pressure is made closer to atmospheric pressure. By doing so, the recording paper that was attracted to the drum 63 is separated, and when the leading edge of the recording paper reaches the opening 65, the recording paper 55 is removed.
is guided by the guide plates 62-1, 114, pops out into the discharged 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 (referred to as a switch SW2 in the following explanation) for detecting when the leading edge of the recording paper 55 passes through a location facing the inkjet nozzle 88. A detector 117 (referred to as switch SW3 in the following explanation) for detecting the trailing edge of the recording paper passing through a part of the guide plate 114 is provided. This will be explained in detail in the description.

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.

Since the operations of the copying apparatus as described above are performed in the order shown in FIG. 9, the outline of the operations will first be explained with reference to FIG.

Note that FIG. 11 is an explanatory diagram schematically showing only the portions related to control in order to understand the explanation of FIGS. 9 and 10.

When the copy switch 119 (CSW) is pressed, as shown in block 121, the paper feed roller 56, the timing roller 10, the document illumination lamp 36, the pump 83 that creates negative pressure inside the drum, the drum motor 77 that drives the drum, and the nozzle head 90 are activated. The solenoid 112 is activated to allow the vehicle to enter. Therefore, the recording paper 55 is fed out from the cassette 53. When the leading edge of the recording paper 55 is detected by the switch SW1 as shown in block 122, the paper feed roller 5
6 is stopped. The recording paper 55 is transported as it is by the timing roller 10, and the recording paper 55
When the tip reaches the opening 65 of the outer drum 64, it is attracted to the periphery of the drum 63 whose interior is kept under negative pressure, and as the drum 63 rotates, the drum 6
3 and the outer drum 64.

If the leading edge of the recording paper 55 wound around the drum 63 is detected by the switch SW2 in this way,
As shown in block 123, the count value n of a counter for counting the number of recorded sheets is incremented.

Then, check whether the recording setting number N is 1 or not.
If <N, it is determined in block 124 how many copies are currently being made, and different copy processing is performed depending on the result of this determination.

In other words, if you are instructed to make multiple copies from one original, is n = 1, which is the first copy of multiple copies, or n = N, which is the last copy of multiple copies? , or 1<n<N, that is, a state other than the above, or a state in which an instruction is made to make one copy from one original (N=1),
Different processing processes are executed based on this determination result.

Specifically speaking, when n=1, the processing of blocks 125 to 131 in Figure 9 is performed.
First, the movement of the optical head 9 and the recording head 8 is started. When time τ has passed since the start of movement,
(In order to determine this t, SW2 is turned on a number of times.
(This is done by detecting that SW2 is
Each time the ON signal is turned ON, pixel signals are sequentially read out from the light receiver 35 using this ON signal as a readout synchronization signal, and the read pixel signals are applied to the recording head 8 and stored in the memory.

In this way, SW2 is executed 3000 times after the elapse of time τ.
When the light is turned on and reading from the light receiver 35 is performed 3000 times, as shown in block 128, the lamp 3
6. Stop the pump 83, stop the movement of the optical head 9, and then move the recording head 8 back to the home position.

If the switch SW3 detects the rear end of the recording paper 55 discharged from the drum 63 in this state, the pump 83 and timing roller 10 are driven as shown in block 129, and the control of block 123 is re-entered. .

On the other hand, as shown in block 130, when the optical head 9 and the recording head 8 start driving, the paper feed roller 56 and the timing roller 10 start to be driven, and when the switch SW1 is turned on, the paper feed roller 56 and the timing roller 10 are started. Stop. In other words, when copying multiple sheets, the next recording sheet to be recorded is fed as close to the recording section as possible to shorten the time required for the next recording.

Further, as shown in block 128, when the recording of the first sheet is completed, the optical head 9 is not returned to the home position, but only the recording head is moved back to the home position. , this means that scanning by an optical head is not necessarily 2
Since this is not necessary for recording subsequent sheets, the return of the optical head 9 to the home position HP is performed after recording of all (N sheets) is completed.

If the optical head 9 is returned to the home position HP after all recording has been performed in this manner, recording can be performed without taking into account vibrations or the like during the backward movement of the optical head 9.

As described above, when the processing of blocks 123 and 124 is started again after the recording of the first sheet is completed, block 1
24, it is determined that 1<n<N, so as shown in block 132, after the time τ has elapsed since the recording head 8 started moving forward, the switch SW2 is turned on.
Each time the pixel information is turned on, pixel information corresponding to one scanning line is read out from the memory and applied to the recording head 8.

In other words, the pixel information read when recording the first sheet is stored in memory, so when recording the second and subsequent sheets, the pixel information read from this memory is used to record without scanning the actual document. It is something to do.

Then, when block 135 detects that one page has been recorded in block 134,
The pump 83 is stopped and the recording head 8 is returned to the home position HP, after which the block 129 is controlled. Further, at the same time as this recording, the recording paper 55 shown in blocks 130 and 131 is also advanced.

As described above, recording of the same information is repeated one after another, and when it is determined in block 124 that n=N is recorded, the recording head 8 starts reciprocating as shown in block 136, and after the elapse of time τ. The recording paper 5 is prepared in the same manner as described in block 134 above.
When it is detected in block 139 that the recording of one page has been completed, the recording head 8 and optical head 9 are returned to the home position, and the drive of the pump 83 is stopped. Then, the switch SW3 detects the trailing edge of the recording paper 55, clears the count value n of the counter that counts the number of recording sheets, and proceeds to the next step 141.
When the switch SW4, which detects that the optical head 9 has returned to the home position, is turned on, the driving of the drum motor and the solenoid 112 is stopped. Note that during the backward movement, the moving speed of the optical head is slower than that of the recording head, so by the time the optical head reaches the home position, the recording head 8 has already reached the home position. .

In this way, when recording the n=Nth sheet, the recording paper 55 is not advanced, and not only the optical head 9 but also the recording head 8 is returned to the home position at the end of recording.

The case where the set number of recording sheets N is plural has been described above, but when N=1, the processing shown in blocks 141 to 146 in FIG. 9 is performed.

That is, when it is determined in block 124 that N=1, block 141 is executed to start the reciprocating drive of the optical head 9 and the recording head 8, and each time the switch SW2 is turned on after the elapse of time τ, the explanation is performed in block 127. As shown above, the output of the photoreceiver is applied to the nozzle and memory. Then, when it is detected that recording on the recording paper has finished, the lamp 36 and the pump 83
The drive of the optical head 9 is stopped, and the optical head 9 moves back to return the recording head 8 to its home position.

The recording operation is then completed through steps 145 and 146 similar to steps 140 and 141.

In this way, the operation of the copying machine is made different when N=1 and when 1<N, and when 1<N, n=1
By making the operation different when 1<n and recording the contents of memory when 1<n,
It is possible to improve the copying speed and obtain high-quality copies without misalignment of the original.

The outline of the control of the copying apparatus according to this embodiment is as described above, but the details will be explained in more detail in FIG.
The control circuit will be explained with reference to FIG.

In FIG. 10, 1F to 10F are S-R flip-flops, and 1F drives the paper feed roller 56 with its set output (driving here means lowering the paper feed roller 56 and moving it from the cassette 53). 2F
drives the timing roller 10 with its set output, 3F lights up the lamp 36 with its set output, 4F drives the pump 83 with its set output, 5F drives the drum motor 77 with its set output, and 6F drives the drum motor 77 with its set output. is the nozzle head 9 at that set output.
0 toward the drum 63
2, 7F uses its set output to move the optical head 9 forward (forward movement is movement away from the home position HP), and 8F uses its set output to move the optical head 9 backward ( The backward movement is movement back to the home position HP), and 9F moves the recording head 8 forward with its set output, and 10F moves the recording head 8 backward with its set output.

The flip-flops 8F and 10F are reset by the outputs of the switches SW4 and SW5 when the optical head 9 and the recording head 8 respectively reach the home position HP and drive the switches SW4 and SW5.

1A to 17A are AND gates, and the outputs of the flip-flops 1F to 17A are AND gates, respectively.
10F, with the symbol of the flip-flop to be controlled and the symbol indicating whether the signal is applied to the S terminal (set terminal) or the R terminal (reset terminal) of the flip-flop. Indicates the controlled object. for example,
1FS indicates that it is applied to the set terminal S of flip-flop 1F, and 1FR indicates that it is applied to the set terminal S of flip-flop 1F.
This shows that the voltage is applied to the reset terminal R of the .

The output of switch SW2 is applied to a counter 150 that counts the number of outputs of switch SW2.
It has counting output terminals 151 to 153 of a,
The terminal 151 is connected to the terminal T1 and also to the set terminal S of the flip-flop 154.
52 is the reset terminal R of the flip-flop 154
Connect to. Further, the terminal 153 is connected to the terminal T2 and is used to apply voltage to the counter 150 in order to clear the counter 150.

The set output of the flip-flop 154 is applied to the counter 155, and when the counted content n of this counter 155 is "O", the set output is applied to the terminal T.
3, and when 1≦n, the discriminator 156
The counting output is applied to the Then, when n=, an output is derived from the discriminator 156 to the terminal T4.

Reference numeral 157 indicates a number setter for recording the set number of copies (N), and a discriminator 158 determines whether this set number of copies N is N=1 or N>1.
Determine by Then, when N=1, an output is derived to the terminal T7, and when N>1, the recorded contents of the setting device 157 are applied to the discriminator 156, and the discriminator 156 is driven. Discriminator 15
In step 6, determine n and compare n and N;
When n=1, the output is derived to the terminal T4, when the comparison result is 1<n<N, the output is derived to the terminal T5, and when n=N, the output is derived to the terminal T6.

The output of the switch SW2 is an AND gate 15
9, and the output of the flip-flop 154 is applied to the AND gate 159. Therefore, from this AND gate 159, after the switch SW2 is turned on a number of times, the switch SW2 is turned on.
The switch ON signal is derived 3000 times each time the switch is turned ON.

The output of the AND gate 159 is applied to the AND gates 160 to 163, and one end of the AND gate 160 is applied with the output of the terminal T7, and one end of the AND gate 161 is applied with the output of the terminal T4. The output of the terminal T5 is applied to one end of the AND gate 162, and the output of the terminal T6 is applied to one end of the AND gate 163. The outputs of the AND gates 160 and 161 are applied to an OR gate 164,
The output of 2,163 is applied to OR gate 165. Therefore, the OR gate 164 reads the pixel signal from the light receiver 72 such as a CCD, and
When this pixel signal is applied to the memory 166 and the inkjet nozzle 88, a readout synchronization signal is derived, and from the OR gate 165, the readout synchronization signal is output from the memory 166.
When a pixel signal is read out from the inkjet nozzle 88 and this pixel signal is applied to the inkjet nozzle 88, a readout synchronization signal is derived.

As already mentioned, when recording on A4 size recording paper in the copying apparatus according to this embodiment,
Since one scanning line consists of 3000 scanning lines each consisting of 2100 pixels, 2100 clock signals are sent to the photoreceiver 72 by deriving one readout synchronization signal.
Or it is applied to the memory 166,
Reference numeral 167 indicates a clock deriving circuit that derives a predetermined number of clocks.If the clock generated by the clock generator 168 is applied, 2100 clock signals will be counted each time the read synchronization signal is applied. and output it. The output of the OR gate 164 is also applied to the gate circuit 169, and when there is a read synchronization signal output from the OR gate 164, a clock signal of 2100 times is applied to both the photoreceiver 72 and the address circuit 170 of the memory 166. It is applied. Also, this gate circuit 1
Reference numeral 69 opens the gate for one scanning period by applying a synchronizing signal.

Therefore, the pixel signals read out one after another from the light receiver 72 are applied to the inkjet nozzle 88, and the pixel signals are also applied to the memory 166, in which the address circuit 170 is applied.
The information is stored sequentially at the address indicated by .

Also, if the read synchronization signal is derived from the OR gate 165, the clock derivation circuit 167 outputs 2100
However, since the gate circuit 169 cannot be opened, the clock signal is applied only to the address circuit 170, and the gate circuit provided in the output circuit of the memory 166 is applied to the address circuit 170. The gate circuit 171 is opened by applying a readout synchronizing signal to the pixel circuit 171, and the pixel signal read out by the address designation of the address circuit 170 is applied to the inkjet nozzle 88 via the gate circuit 171. This gate circuit 171 opens the gate for one scanning period by applying a synchronizing signal.

The operation of the control circuit constructed as above will be described in more detail. First, the operation when the desired number of copies is set to "3" (N=3) will be explained with reference to FIGS. 9 and 10.

If you turn on the copy switch CSW after operating the copy number setting dial 172 to instruct 3 copies (the setting device 157 is set to 3), the number of copies will be 1FS, 2FS, 3 as shown in FIG.
Signals FS, 4FS, 5FS, and 6FS are output, flip-flops 1F to 6F are set, and paper feed roller 56, timing roller 10, and lamp 3 are set.
6, the pump 83, drum motor 77, and solenoid 112 are driven.

As a result, one sheet of recording paper 55 is removed from the cassette 53.
is sent out, and this recording paper 55 is further transported in the direction of the drum 63 by the timing roller 10.
At this time, the switch SW1 detects the leading edge of the recording paper 55, but as shown in the AND gate 1A, no recording is performed on the recording paper 55 (n
= 0), the switch SW1 turns ON, and the signal 1FR is derived, so the paper feed roller 56
drive is stopped. However, since the timing roller 10 continues to rotate, the recording paper 55
is still transported and reaches the opening 65 of the outer drum 64. Since the inside of the drum 63 has a negative pressure due to the operation of the pump 83, the leading edge of the recording paper 55 is attracted to the surface of the drum 63 and pulled into the gap between the outer drum 64 and the drum 63. As mentioned above, since the one-way clutch is inserted into the timing roller 10, even if the peripheral speed of the drum 63 is faster than the paper feeding speed of the timing roller 10,
The recording paper 55 wound around the drum 63 can pass through the timing roller 10 without any hindrance.

The recording paper 55 wound around the drum 63 in this way
When the tip of the switch SW2 is detected, the counter 150 counts 1 and the terminal 151,
Since T1 is set to high level, flip-flop 1
54 is set, and the count content of the counter 155 becomes "1".

As mentioned above, since N=3, the discriminator 158 applies this 3 to the discriminator 156 and sets the discriminator 156 in the driving state, and the counter 15
By applying the count value "1" of 5 to this discriminator 156, a high level signal is derived at the terminal T4. (Since N≠1, terminal T7 is kept at low level.) When terminals T1 and T4 are at high level like this,
Signals 1FS, 7FS, and 9FS are derived from the AND gate 2A, and in order to advance the next recording paper, the driving of the paper feed roller 56 is restarted, the forward movement of the optical head 9 is started, and the forward movement of the recording head 8 is started. start the movement.

Each time the switch SW2 detects the leading edge of the recording paper 55 wound around the drum 63, the count of the counter 150 increments, but no other changes occur (during this time, the recording head 8, optical head 9 (This is the run-up period.) In this way, the recording paper 5
When the tip of 5 is detected a number of times by switch SW2, the terminal 152 becomes high level and the flip-flop 15
4 is reset, gate 159 opens, and the switch
SW2 output (read synchronization signal) is AND gate 1
60 to 163. However, terminal T
Since only the AND gate 161 to which the output of 4 is applied is open, the read synchronization signal is applied to the AND gate 15.
9, 161, is applied to the clock deriving circuit 167 and the gate circuit 169 via the OR gate 164.

Therefore, each time the read synchronization signal is applied, 2100
clock signal will be applied to photoreceiver 72 and address circuit 170 of memory 166. Pixel signals read out from the light receiver 72 by applying such a clock signal are applied to the inkjet nozzle 88, and the pixel signals are sequentially stored in the memory 166.

While the switch SW2 is repeatedly turned on in this way, the leading edge of the recording paper 55 that has been advanced is turned on by the switch.
Reach SW1. When switch SW1 is turned on with a high level signal being derived from T4, signals 1FR and 2FR are output from AND gate 3A.
is led out, and the driving of the paper feed roller 56 and timing roller 10 is stopped. In other words, the recording paper 55 to be used for the next recording is moved to the timing roller 1.
It is expected to add 0.

When 3000 readout synchronization signals are derived from the OR gate 164, recording on the recording paper 55 is completed, but such recording is completed when a high level signal is applied to the terminal T2 of the counter 150. It can be detected by being derived. In this way, when T2 becomes high level, AND gate 4A sends signals 3FR, 4FR, 7FR, 9
When FR and 10FS are derived, the lamp 36 is turned off, the pump 83 is stopped, the forward movement of the optical head 9 is stopped, the forward movement of the recording head 8 is stopped, and the backward movement is started. When the recording head 8 moves backward, the flip-flop 10F is reset by detecting that the recording head 8 is located at the home position HP by the switch SW5.

As the drum 63 rotates while the suction inside the drum 63 is stopped, the recording paper 55 wrapped around the drum 63 is ejected from the opening 65 between the guide plates 62-1 and 114. However, when the rear end of the ejected recording paper 55 is
By detecting by 3, AND gate 5A
operates and derives signals 4FS and 2FS. Therefore, the timing roller 10 starts to drive, and the recording paper 55 that has been advanced and held in the timing roller 10 is moved to the guide plate 62-1,
62-2 and is fed into the opening 65, and the inside of the drum 63 is again made negative pressure.

The second recording paper 55 fed in this way
is attracted to the drum 63, and its tip is the switch
By being detected by SW2, a high level signal is derived to the terminals 151 and T1 of the counter 150, setting the flip-flop 154 and incrementing the counter 155 to make the count value "2".

Therefore, a high level signal is derived from the discriminator 156 to the terminal T5. Terminal T like this
When a high level signal is derived from 1 and T5, signals 9FS and 1FS are derived from AND gate 6A,
While the recording head 8 is moved forward, the paper feed roller 56 is driven to advance the third recording paper.

By detecting the leading edge of the recording paper 55 that has been advanced in this manner with the switch SW1, signals 1FR and 2FR are derived from the AND gate 7A, and the driving of the paper feeding roller 56 and the timing roller 10 is stopped.

On the other hand, the tip of the recording paper 55 wound around the drum 63 is switched to switch SW2 every time the drum 63 rotates once.
is turned on, but the AND gate 159 does not open until it is turned on a number of times, and the flip-flop 154 is reset and the gate 159 is opened when it is turned on a number of times. As described above, since the terminal T5 is at a high level, when copying the second copy, the AND gate 162 is opened and the OR gate 165 outputs a read synchronization signal.

Therefore, every time switch SW2 is turned on, the read synchronization signal is sent to clock deriving circuit 167 and gate 1.
71 and 2100 clock signals are applied to the address circuit 170 to read out the pixel signal stored in the memory 166 during the first copy, and the read pixel signal passes through the gate circuit 171 and is injected into the inkjet. The voltage is applied to the nozzle 88. (Note that the recording address circuit 170 is
The initial address is restored by the output of the switch SW3 which detects that the paper 5 is ejected from the drum 63. ) Furthermore, since the gate circuit 169 is closed, reading of the light receiver 72 is not performed, and therefore, recording is performed using pixel signals in the memory 166 that are sequentially read out.

That is, for the second and subsequent copies, recording is performed not by the pixel signals from the light receiver 72, but by the pixel signals written in the memory 166 when copying the first copy.

In this way, the read synchronization signal is derived from the OR gate 165 3000 times, so that the memory 166
The recording of all the information stored in the terminal is completed, but at the end of such recording, the terminal T
2, a high level signal is derived.

When high level signals are derived from terminals T2 and T5, AND gate 8A operates and signals 4FR,
9FR and 10FS are derived, the pump 83 is stopped, the forward movement of the recording head 8 is stopped, and the backward movement is performed.

When the pump 83 stops, the recording paper 55 is ejected, but when the rear end of the ejected recording paper 55 is
When detected by SW3, AND gate 9A works,
The signals 4FS and 2FS are derived to drive the pump 83 and the timing roller 10 to start transporting the third sheet of recording paper that has been caught by the timing roller 10.

The third recording paper 55 is wound around the drum 63,
When the tip is detected by the switch SW2, the terminals 151 and T1 of the counter 150 become high level, the count content of the counter 155 becomes "3", and a high level signal is derived to the terminal T6 of the discriminator 156.

In this way, when T1 and T6 become high level, the signal 9FS is derived from the AND gate 10A, and the recording head 8 starts to move forward.

Note that since this is the last copy of the set number of copies, the recording paper 5 is different from the first and second copies.
5 will not be postponed.

Then, when the switch SW2 is turned on a number of times, the flip-flop 154 is reset and the AND gate 159 is opened. Since the high level signal is derived from the terminal T6, the AND gate 163 is opened and the read synchronization signal is derived via the OR gate 165. Therefore, the contents of the memory 166 are read out and applied to the inkjet nozzle 88 in the same manner as when copying the second sheet.
If the read synchronization signal is derived 3000 times in this way and all the information in the memory 166 is recorded,
The terminal T2 is at a high level. T2 and T
6 becomes high level, and gate 11
Signals 9FR, 10FS, 8FS, and 4FS are derived from A, and the forward movement of the recording head 8 is stopped and the backward movement is made.
The optical head 9 is moved back, the pump 83 is stopped, and the recording paper 55 is discharged.

When the last copy of the set number of sheets is completed, the optical head 9, which has been moved forward and stopped at the end opposite to the home position HP, is moved back.

By detecting the trailing edge of the ejected recording paper with the switch SW3, the AND gate 12A is activated and the counter 155 is cleared.

Then, when the switch SW4 detects that the optical head 9 that has moved back has reached the home position, the AND gate 13A operates to derive signals 5FR and 6FR and stop driving the drum motor 77. At the same time, the driving of the solenoid 112 is stopped.

Note that the backward movement speed of the optical head 9 is the same as that of the recording head 8.
Since it is slower than the return speed of
When the optical head 9 reaches the home position, all movable members have returned to their initial positions.

Copying when N>1 is performed as described above, but next, copying when N=1 is performed in the ninth
This will be further explained with reference to FIGS.

If N=1 is set by the setting device 157,
Since a high level signal is derived from the terminal T7 of the discriminator 158 and the discriminator 156 is controlled so as not to operate, no output is derived from the terminals T4, T5, and T6 regardless of the contents of the counter 155. be.

First, press the copy switch CSW, signal 1
FS, 2FS, 3FS, 4FS, 5FS, 6FS are derived, and the tip of the fed recording paper 55 is switched to SW.
If detected with 1, signal 1FR is output from AND gate 1A.
Deriving is similar to the operation described above.

When the leading edge of the recording paper 55 is detected by the switch SW2, the AND gate 14A is activated, signals 7FS and 9FS are derived, and the optical head 9 and the recording head 8 begin to move forward.

When the switch SW2 is turned on a number of times, the flip-flop 154 is reset and the gate 159 is opened.
A read synchronization signal is derived via an AND gate 160 and an OR gate 164.

Therefore, the readout synchronization signal is applied to the clock derivation circuit 167 and the gate circuit 169, and the light receiver 7 is
The pixel signals read from the inkjet nozzle 88 are applied to the memory 166 and the inkjet nozzle 88.

When the derivation of 3000 read synchronization signals is completed in this way, the terminal T2 of the counter 150 becomes high level and the AND gate 15A outputs the signals 3FR and 4.
FR, 7FR, 8FS, 9FR, and 10FR are derived.

Therefore, the lamp 36 goes out, the pump 83 stops, the optical head 9 stops forward movement and starts a backward movement, and the recording head 8 stops forward movement and starts a backward movement.

When the rear end of the recording paper 55 discharged in this manner is detected by the switch SW3, the AND gate 16A is operated and the counter 155 is cleared.

Next, when the optical head 9 that has been moving backward reaches the home position, the drum motor 77 is stopped, and the driving of the solenoid 112 is also stopped to stop the copying operation.

Next, a configuration for masking information on a document using the pointers 18 to 21 will be described with reference to FIG.

The part surrounded by a dotted line in FIG. 10 is a mask circuit 175, and its operating principle is that information on a masked area is transmitted to an inkjet nozzle 88 and a memory 1 from a light receiver 72 by closing a gate 176.
66, masking of a desired location is performed. Reference numeral 177 designates a clock deriving circuit having the same configuration as 167, and when the switch SW8 is turned on during the run-up period of the optical head 9, 2100 clock signals are sent to the 2100-bit shift register 1.
78 and the light receiver 72.
The output of the light receiver 72 is applied to the shift register via the gate circuit 179, which is opened for 2100 clocks when the switch SW8 is turned on.
, the locations corresponding to the positions of the reflectors 52-1 and 52-2 when the switch SW8 is turned on are stored as logic "1", and the other locations are stored as "O".

On the other hand, the output of the shift register 178 is connected to the set output of a flip-flop 180, and the set output of the flip-flop 180 and the output of the shift register 178 are connected to an AND gate 1.
81, and the output of this AND gate 181 serves as the reset input of the flip-flop 180.

Therefore, the shift register 178 is connected to the reflector 5.
After memorizing the position of 2, such a shift register 1
If a clock pulse is applied to 78 to read its contents, a high level signal can be obtained on signal line 182 only when information between both reflectors 52 is being read.

Also, 183 is a flip-flop,
The set input of this flip-flop 183 is connected to a switch SW that is driven while the optical head 9 is moving.
In addition to applying the output of 6, a switch SW that is driven during the movement of the optical head 9 is applied to the reset input.
7 outputs are applied. Therefore, the set output line 184 of the flip-flop 183 has
A high level signal is derived only between the switches SW6 and SW7.

The signal lines 182 and 184 as described above are connected to an AND gate 185, and the output of this AND gate 185 controls a gate circuit 176.
Only when a high level signal is applied to 76,
By opening the gate circuit 176 and closing the gate circuit 176 during other periods, it is possible to mask the area indicated by the pointers 18 to 21.

As explained above, according to the present invention, the address signal is formed in accordance with the detection of the leading edge of the recording material being conveyed, so the image signal is read out in accordance with the conveyance position of the recording material. , it becomes possible to record the image at the appropriate position on the recording material,
Furthermore, since the initial return is performed by detecting the trailing edge of the recording material on which an image has been recorded, it is possible to repeatedly form the same address signal without delaying the sequential conveyance of multiple sheets of recording material. Reading is performed quickly, and it becomes possible to perform high-speed image recording on a plurality of recording materials that are sequentially conveyed. Therefore, according to the present invention, it is possible to record the same image based on stored image signals at appropriate positions on a plurality of recording materials at high speed.

[Brief explanation of drawings]

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.
Figure 4 is a 4A-4A sectional view of Figure 3, Figure 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 Figure 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, FIG. 9 is an explanatory diagram showing the control procedure, FIG. 10 is a control circuit diagram, and FIG.
FIG. 1 is a schematic diagram of a copying apparatus. 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, 83 is a pump, 88 is an inkjet nozzle, 90 is a nozzle head, 112 is a solenoid, 115 is a storage section,
119 is a copy switch, 1F to 10F are flip-flops, 1A to 17A are AND gates, 15
4,180,183 is a flip-flop, 15
0,155 is a counter, 156 is a discriminator, 166
1 is a memory, 167 is a clock deriving circuit, and 175 is a mask circuit.

Claims (1)

[Scope of Claims] 1. A storage means that stores an image signal, a conveyance means that sequentially conveys a plurality of sheets of recording material along a predetermined conveyance path, and a recording medium that is conveyed to an image recording position by the conveyance means. recording means for recording an image based on an image signal read from the storage means; a discharge means for discharging the recording material on which the image has been recorded by the recording means along a predetermined discharge path; , a first detection means for detecting a front end of a recording material to be image recorded, which is conveyed by the conveyance means to an image recording position of the recording means; and an image record provided in the discharge path and discharged by the discharge means. a second detecting means for detecting the trailing edge of the recorded recording material; a generating means for generating a clock signal as a reference for reading out the image signal; and a second detecting means for generating a clock signal as a reference for reading out the image signal; forming means for forming an address signal based on the recording material leading edge detection output of the first detecting means, and forming an address signal based on the recording material trailing edge detection output of the second detecting means. The same address signal is repeatedly formed by the forming means each time a plurality of recording materials are conveyed by the conveying means, and the same address signal is output from the storage means in accordance with the repeatedly formed address signal. An image recording apparatus characterized in that an image signal is repeatedly read out and supplied to the recording means, and the same image is recorded on a plurality of recording materials sequentially conveyed by the conveyance means.