JPH0385560A - Image recorder - Google Patents

Abstract

PURPOSE:To prolong the service life of a color recorder by stopping the action of a processing unit which carries out color recording when the recording only with unit which a black tone is carried out. CONSTITUTION:A second carrying means 18 is provided which carries a recording medium to an image carrier 1d among plural image carriers 1a to 1d. Then, when a toner image is formed on the image carrier 1d, the actions of the other image carriers other than the image carrier 1d, 1a to 1c, are stopped and the action of a first carrying device 10 is also stopped out by the second carrying means 18. Therefore, the toner image is formed only on the image carrier 1d, and when recording only with the black tone is carried out, the deterioration of the image carriers 1a to 1c can be prevented since the actions of the image carriers 1a to 1c and the action of the first carrying means 10 are stopped. Thus, the service life of the color recorder can be prolonged.

Description

[Detailed Description of the Invention] [Table of Contents] Overview Industrial Application Fields Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems Actions Examples Effects of the Invention [Summary] Multiple image carriers placed side by side In an image recording apparatus that records one toner image by forming different toner images on each image carrier and transferring these different toner images in a superimposed manner onto a recording medium, only one image carrier is used. Regarding an image recording device that prevents other image bearing members from being worn out when recording a toner image formed on a , is provided with a first conveying means for sequentially conveying a recording medium for each of the image bearing members disposed side by side, and forming a toner image on each image bearing member on the recording medium conveyed by the first conveying means. , an image recording apparatus that records one toner image on a recording medium by overlappingly transferring toner images; When a conveying means is provided and a toner image is formed on the two image carriers, the operations of the other image carriers except the two image carriers are stopped, and
The configuration is such that the operation of the first conveying means is stopped and the extenuating amount recording medium is conveyed by the second conveying means.

[Industrial application field]

The present invention records a single toner image by arranging a plurality of image carriers side by side, making each image carrier bear a different toner image, and superimposing and transferring these different toner images onto a recording medium. TECHNICAL FIELD The present invention relates to an image recording apparatus that uses a single image carrier, and particularly relates to an image recording apparatus that prevents other image carriers from being worn out when recording a toner image formed only on one image carrier.

Color recording devices using electrophotography include color printers, color facsimile machines, color copying machines, and the like. Such an electrophotographic recording device has an image forming process and a recording paper conveyance process, and the image forming process includes an electrostatic latent image forming process, an electrostatic latent image developing process, a transfer process, and a fixing process. It will be done.

In the electrostatic latent image formation process, an electrostatic latent image is formed by optically projecting an image onto a photosensitive drum or belt, or by applying a charge onto a dielectric drum.

In the electrostatic latent image development process, the electrostatic latent image is developed by electrostatically adhering toner as a developing medium to the electrostatic latent image formed as described above.

The toner used for development is transferred to the recording paper in a transfer process, and then the transferred toner is fixed to the recording paper in a fixing process.

Color recording devices that use color toner to express multiple colors include those that form an image on recording paper in one go; In addition to the serial image processing method that does not operate, there is also a method that has multiple photosensitive drums and performs parallel image processing on the recording paper conveyed by the recording paper conveyance process. However, in those having a plurality of photosensitive drums, yellow, magenta, cyan, and black color toner images are usually formed on each of the four photosensitive drums and transferred onto recording paper.

Incidentally, in such a color recording apparatus, in addition to color recording, only black recording is often performed. In this case, the photosensitive drums that form the other yellow, magenta, and cyan toner images do not need to form toner images, so when recording only black, the yellow, magenta, and cyan image forming processes It is desirable that the recording paper conveyance process for this image forming process be stopped.

[Conventional technology]

FIG. 6 is a diagram illustrating an example of the prior art.

FIG. 6 shows an example of the configuration of a color recording device using four photosensitive drums, where P□P b, P C, and P a are
For example, it is a process unit that prints each color of yellow, magenta, cyan, and black.

The process unit P includes a photosensitive drum la, a charger 2a, an exposure device 3a, a developing device 4a, a transfer device 5a, and a cleaner 6a.The process unit P includes a photosensitive drum lb, a charger 2b, an exposure device 3b, It is composed of a developing device 4b, a transfer device 5b, and a cleaner 6b.

In addition, the process unit PC includes a photosensitive drum 1c and a charger 2.
c, an exposing device 3c, a developing device 4c, a transfer device 5C, and a cleaner 6c, and the process unit Pd includes a photosensitive drum 1.
d, charger 2d, exposure device 3d, developer 4d, transfer device 5d
and a cleaner 6d.

When instructed to start printing, the drive pulley 13 is rotated by a motor driven by an instruction from a control circuit (not shown), causing the belt 10 to run at a constant speed in the direction of arrow A. Further, the photosensitive drums 1a to 1d also rotate in synchronization with the traveling speed of the bell 10, and residual toner is cleaned by cleaners 6a to 6d, respectively.

Then, the cleaned surfaces of the photosensitive drums 1a to 1d are charged by the chargers 2a to 2d to which a voltage is applied according to instructions from the control circuit. Further, the control circuit is connected to each developing device 4a to
The developing roller 4d is rotated and the developing bias is turned on.

The control circuit detects the position of a conveying member (referred to as a chuck or gripper) 14 that grips and conveys the recording paper 7 attached to the belt 10, for example, when the conveying member 14 comes into contact with the tip of a lever. Gripper detection sensor 1
5, when it is detected that the predetermined position has been reached,
The recording paper 7 stored in the recording paper cassette 8 is fed out from the recording paper cassette 8, is brought into contact with a standby roller 9, and is kept on standby.

Then, when a predetermined time has elapsed since the position detection of the conveying member 14, the standby roller 9 is rotated and the recording paper 7 is rotated.
The leading edge of the recording paper 7 is fed out at a speed slightly higher than the running speed of the bell) 10, and is chased from behind the conveying member 14, so that the leading edge of the recording paper 7 is inserted into the conveying member 14. Then, the conveying member 14 grips the leading edge of the recording paper 7 and transports it between the photosensitive drum 1a and the transfer device 5a of the process unit P1.

The control circuit measures the time it takes for the recording paper 7 to reach the toner image transfer position of the process unit P based on the timing of driving the standby roller 9, and outputs a modulated light beam from an exposure device 3a using a light emitting diode, for example. Photosensitive drum 1
a, and an electrostatic latent image is sequentially formed line by line.

Toner supplied from the developing roller of the developing device 4a with the developing bias turned on as described above adheres to this latent image, and a yellow toner image is developed on the photosensitive drum Ia.

When the recording paper 7 is carried between the transfer device 5a and the photosensitive drum 1a, the control circuit applies voltage to the transfer device 5a to transfer the toner image formed on the photosensitive drum 1a onto the recording paper 7.

The recording paper 7 on which the yellow toner image has been transferred in the process unit P is supported by a suction bell 11a, and as the belt 10 runs, it is carried between the photosensitive drum 1b and the transfer device 5b of the process unit Pb. .

The control circuit measures the time for the recording paper 7 to reach the toner image transfer position of the process unit Pb based on the timing of driving the standby roller 9, and directs the modulated light beam from the exposure device 3b using a light emitting diode to the photosensitive drum 1b. to form an electrostatic latent image line by line.

Toner supplied from the developing roller of the developing device 4b whose developing bias is turned on as described above adheres to this latent image, and a magenta toner image is developed on the photosensitive drum 1b.

When the recording paper 7 is carried between the transfer device 5b and the photosensitive drum lb, the control circuit applies voltage to the transfer device 5b to transfer the toner image formed on the photosensitive drum 1b onto the recording paper 7.

The recording paper 7, onto which the magenta toner image has been transferred in the process unit P, is supported by a suction bell)llb, and is carried between the photosensitive drum 1c and the transfer device 5c of the process unit PC as the belt lO runs. .

The control circuit measures the time for the recording paper 7 to reach the toner image transfer position of the process unit Pe based on the timing of driving the standby roller 9, and directs the modulated light beam from the exposure device 3c using a light emitting diode to the photosensitive drum. lc to sequentially form an electrostatic latent image line by line.

Toner supplied from the developing roller of the developing device 4c with the developing bias turned on as described above adheres to this latent image, and a cyan toner image is developed on the photosensitive drum 1c.

When the recording paper 7 is carried between the transfer device 5c and the photosensitive drum 1C, the control circuit applies voltage to the transfer device 5c to transfer the toner image formed on the photosensitive drum lc onto the recording paper 7.

The recording paper 7, onto which the cyan toner image has been transferred in the process unit P, is supported by a suction belt llc, and is carried between the photosensitive drum 1d and the transfer device 5d of the process unit P4 as the belt IO runs.

The control circuit measures the time for the recording paper 7 to reach the toner image transfer position of the process unit P4 based on the timing of driving the standby roller 9, and directs the modulated light beam from the exposure device 3d using a light emitting diode to the photosensitive drum 1d. to form an electrostatic latent image line by line.

Toner supplied from the developing roller of the developing device 4d whose developing bias is turned on as described above adheres to this latent image, and a black toner image is developed on the photosensitive drum 1d.

When the recording paper 7 is carried between the transfer device 5d and the photosensitive drum ld, the control circuit applies voltage to the transfer device 5d to transfer the toner image formed on the photosensitive drum ld onto the recording paper 7.

The recording paper 7, onto which the black toner image has been transferred in the process unit P4, is released from the grip of the conveying member 14, and as the belt 10 runs, it is carried between the fixing roller and the pressure roller of the fixing device 12. The transferred toner image is fixed.

[Problem to be solved by the invention]

When a color recording device such as the one described above is used in a color printer, color facsimile, etc., in reality, it is used more for recording solid black documents such as text than for recording color images. However, in a color recording device that uses four photosensitive drums, even when outputting only black, in the process unit P□P1Pc, P,
A process unit P that does not need to form a toner image.
Pb.

The PC is also running.

This is because when the photosensitive drums Ia-1c are stopped, when the recording paper 7 passes between the photosensitive drums 1a-1c and the transfer devices 5a-5c, the photosensitive drums 18-IC are rubbed. In order to avoid scratches on the photosensitive drums 1a to 1c, it is necessary to rotate them in the same way as the photosensitive drums ld, and accordingly, the developing rollers of the developing devices 4a to 4c rotate.
Since the developer is stirred, both the developer itself and the developer inside the developer deteriorate.

Further, the photosensitive trams la to 1c rotate, and the charger 2
3 to 2c and voltages are applied to the transfer devices 5a to 5c as well, so the cleaners 6a to 6c deteriorate in the same way as they continue their cleaning operations.

Therefore, there is a problem in that the lifespan of the process units P□P, .

In view of these problems, the present invention aims to extend the life of the entire color recording apparatus by not operating the process units P□Ph and pc when performing black recording.

[Means to solve the problem]

As shown in FIG. 1, this purpose is to arrange a plurality of image carriers 1a to 1d side by side, and to apply a recording medium to each image carrier from image carrier 1a to image carrier 1d. By providing a first conveying means 10 that sequentially conveys, forming a toner image on each image carrier, and transferring the toner images in an overlapping manner onto the recording medium conveyed by the first conveying means 10. , in an image recording apparatus that records one toner image on the recording medium, one image carrier 1 among the plurality of image carriers 1a to 1d.
d is provided with a second conveyance means 18 for conveying the recording medium, and when a toner image is formed on the - image carriers 1d, other image carriers 1a to 18 excluding the - image carriers 1d are provided. IC
This is achieved by stopping the operation, stopping the operation of the first conveyance means 10, and causing the second conveyance means 18 to convey the recording medium.

[Effect]

With the above configuration, when a toner image is formed only on the image carrier 1d and a single black recording is performed, the operations of the image carriers 1a to IC and the operation of the first conveying means IO are stopped. Therefore, deterioration of the image carrier 1a to IC can be prevented, and the life of the color recording apparatus can be extended.

〔Example〕

FIG. 1 is a diagram for explaining the present invention in detail, and FIG. 2 is a detailed diagram for explaining FIG. 1.

The same reference numerals as in FIG. 6 indicate the same functions. When instructed to start color printing, the control circuit (not shown) rotates the drive pulley 13 to print the bell 1-1 as explained in FIG.
When the transport member 14 reaches a predetermined position, the recording paper of the specified size is fed out by driving the pick roller 3 from the recording paper cassette 40, and then passed through the transport rollers 31135 and 37. It abuts against the standby roller 9.

In this case, the control circuit controls the recording paper to
The route change water 33 is placed in advance by rotating it upward so that it moves in the direction of.

When the designated size of recording paper is in the recording paper cassette 41, the control circuit drives the big roller 39 to feed it out, and causes the recording paper to be conveyed to the standby roller 9 via the conveyance rollers 32, 36, and 37. Also in this case, the control circuit rotates the rerouted water 34 upward in advance.

As explained in FIG. 6, the photosensitive drums la to 1d
The toner image formed on the recording paper is transferred to the fixing device 12.
Fix it with. At this time, the drive boots IJ16 and IJ17 are not driven, and the guide plate 21 is separated from the belt 10 so that the rotation of the shaft 22 does not obstruct the passage of the recording paper.

When instructed to start printing all black, the control circuit drives the drive pulley 13 to move the conveyance member 14 attached to the bell 1-10 so that it is not in the vicinity of the process unit P4. For example, if the conveying member 14 is attached to the belt 10,
If the two conveying members 14 are attached to each other, the movement of the belt 10 is stopped when each of the two conveying members 14 reaches the position of the drive pulley 13, that is, the position shown in the conveying member 14 in FIG. 2(a). . In this way, the remaining two conveyance members 14 will be present at the midpoint between the process units P and PC.

The control circuit then drives drive pulley 16 to move belt 18. FIG. 2 shows the details of the recording paper conveyance path to the process unit P6, and FIG. FIG.

The drive pulley 16 is driven by a drive system different from that of the drive pulley 13, and the belt 18 is disposed inside the belt 10, as shown in FIG. 2(b). That is, as shown in belts 10a and 10b, the belt 10 is passed around drive pulleys 13a and 13b, respectively, and the belt 18
As shown in 18a and 18b, the drive pulley 16a
and 17a and between drive pulleys 16b and 17b, respectively.

A plurality of conveyance members 25 are attached to the belt 18, and as the belt 18 moves in the direction of arrow C, the leading edge of the recording paper 27 that is fed out is gripped and conveyed between the photosensitive drum 1d and the transfer device 5d. is configured to do so.

When the position of the conveyance member 25 is detected by the gripper detection sensor 26 due to the movement of the belt 18, the control circuit causes the recording paper to be fed out from the recording paper cassette 40 as described above, and the recording paper is conveyed through the route changing water 33. rollers 31 to 3
Rotate as shown in the figure so that it is sent to zero. Therefore, the recording paper whose route has been changed by the route changing water 33 is conveyed via the conveyance rollers 31, 30, 29, 28, and is brought into contact with the standby roller 24 as shown in the recording paper 27.

When a predetermined time has elapsed since receiving the detection signal from the gripper detection sensor 26, the control circuit drives the standby roller 24 to feed out the recording paper 27. The recording paper 27 fed out from the standby roller 24 changes its direction at the guide plate 19, enters between the guide plates 20 and 23, then changes its direction at the guide plate 21, and its leading end is pushed into the conveyance member 25. is grasped by. At this time, the control circuit rotates the shaft 22 of the guide plate 21 to lower the leading edge of the guiding plate 21 as shown in the figure, so that the leading edge of the recording paper 27 is fed out in the direction of the conveying member 25.

When the recording paper 27 that has passed between the photosensitive drum 1d and the transfer device 5d by the conveying member 25 reaches the position of the drive pulley 1G, it is released from the grip of the conveying member 25, is pushed out by the rotation of the photosensitive drum 1d, and is transferred to the fixing device 12. The transferred toner image is fixed.

FIG. 3 is a block diagram of a circuit showing one embodiment of the present invention.
FIG. 4 is a time chart explaining the operation of FIG. 3.

When the control circuit 45 is instructed to start color printing, it turns on the control signal as shown in FIG.
The motors 50 and 51 are driven through the photosensitive drum 1a-
1c and photosensitive drum ld are rotated. At the same time, the motor 52 is driven via the driver 48 to rotate the drive pulley 13. Further, the voltage is sent from the high voltage power supply 54 to the switching circuit 55, and the voltage is sent from the switching circuit 55 to the chargers 2a to 2.
A voltage is applied to C and the charger 2d. At the same time, the heating roller and pressure roller of the fixing device 12 (not shown) are rotated to heat the heating roller.

As shown in FIG. 4, the control circuit 45 switches the drivers 56 and
7, the developing rollers of the developing units 4a to 4C and the developing unit 4d are rotated, and the developing bias is turned on.

As explained in FIG. 6, when the position of the conveying member 14 is detected by the gripper detection sensor 15, the control circuit 45 causes the recording paper to be fed out, gripped by the conveying member 14, and conveyed, and is shown in FIG. As shown, at the timing when the toner image is transferred to the recording paper with a specified margin,
The LED control circuit 58a is instructed to cause one light emitting diode of the exposure device 3a to emit light, and the modulated light beam is directed to the photosensitive drum 1.
Project it to a.

Then, the yellow toner image formed on the photosensitive drum 1a by the developing device 4a is transferred at the timing shown in FIG.
The image is transferred onto the recording paper by the transfer device 5a to which a voltage is applied from the high-voltage power source 59a.

The control circuit 45 turns on the LED control circuit 58b at the timing shown in FIG.
The light emitting diode of the exposure device 3b is caused to emit light, and the modulated light beam is projected onto the photosensitive drum 1b.
At the timing shown in , a voltage is applied from the high-voltage electric current 59b to the transfer device 5b, and the magenta toner image developed by the developing device 4b is transferred onto the recording paper.

Similarly, the control circuit 45 at the timing shown in FIG.
The LED control circuit 58c is instructed to cause the light emitting diode of the exposure device 3c to emit light, and the modulated light beam is directed to the photosensitive drum 1c.
At the timing shown in Fig. 4, the high-voltage power source 5
A voltage is applied from 9c to the transfer device 5c, and the cyan toner image developed by the developer 4c is transferred onto the recording paper.

Then, the control circuit 45 at the timing shown in FIG.
The LED control circuit 58d is instructed to cause the light emitting diode of the exposure device 3d to emit light, and the modulated light beam is directed to the photosensitive drum 1d.
At the timing shown in FIG. 4 [Phase], a voltage is applied from the high voltage power supply 59d to the transfer device 5d,
The developed black toner image is transferred to recording paper.

Repeat the above operation for the specified number of recording sheets,
When the specified number of sheets have been printed, the control circuit 45 stops the rotation of the developing rollers of the developing units 4a to 4d and turns off the developing bias, as shown in FIG. Then, as shown in FIG.
2d, the voltage application is stopped, the rotation of the roller of the fixing device 12 is stopped, and the heating is stopped.

When instructed to start printing all black, the control circuit 45
As shown in FIG. 0, the control signal is turned on and the motor 50 is driven via the driver 46 to rotate the photosensitive drums 13 to 1c. At the same time, the motor 52 is driven via the driver 48 to rotate the drive pulley 13. Further, a voltage is sent from the high voltage power supply 54 to the switching circuit 55, and the voltage is applied from the switching circuit 55 to the chargers 2a to 2C.

As shown in FIG. 4, the control circuit 45 rotates the developing rollers of the developing devices 4a to 4c via the driver 56 when a certain period of time has elapsed since the control signal was turned on.
Turn on the developing bias and at the same time, as shown in Figure 4 ■,
The heating roller and pressure roller of the fixing device 12 (not shown) are rotated to heat the heating roller, and as shown in FIG. 4 [phase], the developing roller of the developing device 4d is rotated via the driver 57. The developing bias is turned on, and a voltage is applied to the charger 2d via the switching circuit 55.

The control circuit 45 then controls the driver 60 as shown in FIG.
The route changing claws 33 and 34 are rotated to change the path of the recording paper so that the recording paper is fed out in the direction of the conveyance roller 30, and the shaft 22 is rotated via the driver 61 to change the direction of the guide plate 21. Recording paper 27 is fed out.
A path is formed to be gripped by the conveying member 25.

As described above, when the two transport members 14 reach the positions of the drive pulleys 13, the control circuit 45 turns off the control signal and stops the rotation of the photosensitive drums 1a-1c, as shown in FIG. 4, 0 and @. Then, the rotation of the drive pulley 13 is stopped, and the switching circuit 55 is switched to stop the voltage supplied to the chargers 2a to 2C.

Further, the rotation of the developing rollers of the developing devices 4a to 4C is stopped, and the developing bias is turned off.

As shown in FIG. 4, the control circuit 45 drives the motor 53 via the driver 49 to rotate the drive pulley 16.
The belt 18 is made to run. As described above, the gripper detection sensor 26 shown in FIG.
When a position detection signal is received, the light emitting diode of the exposure device 3d is caused to emit light via the LED control circuit 58d after a predetermined period of time has elapsed, and the modulated light beam is directed onto the photosensitive drum 1d. Let it project. Then, as shown in FIG. 4 (2), voltage is applied from the high voltage power supply 59d to the transfer device 5d in the same manner as described above, and the black toner image is transferred onto the recording paper.

Repeat the above operation for the specified number of recording sheets,
When printing of the specified number of sheets is completed, as shown in FIG. 4 [phase], the rotation of the developing roller of the developing device 4d is stopped, the developing bias is turned off, and the voltage application to the charger 2d is stopped. Then, as shown in FIG. 4 (■), the fixing device 12
The roller rotation and heating are stopped.

Next, as shown in FIG. 4 [phase], the control circuit 45 stops the rotation of the drive pulley 16 to stop the belt 18 from running. It detects that the vehicle has reached a position that does not obstruct the running of the vehicle 14 and stops the vehicle. That is, if there are two conveyance members 25, they are stopped when they are located on both sides of the drive pulleys 16 and 17.

Then, as shown in FIG. 4, the path changing claws 33 and 34 are returned to their original positions, and the shaft 22 is rotated so that the guide plate 21 is separated from the belt 10.

FIG. 5 is a flowchart illustrating the operation of FIG. 3.

When the control circuit 45 in FIG. 3 is instructed to start printing, it checks in step [phase] whether or not it is monochrome output, and if it is not monochrome and color printing is instructed, it moves to step 0. , process units P, ~P4 and the first conveyance means are started. Then, in step @, recording is performed on the recording paper, and in step @, it is checked whether the recording is finished. If not, the process returns to step @, and if it is finished, the process moves to step @, and the process units P, ~Pd and stops the operation of the first conveying means. That is, the processes described in FIG. 4 (1) to [phase] are executed.

If monochrome output is specified in step [Phase],
The control circuit 45 controls the process units P, . . .
P, the first conveying means is started.

Then, while the conveying member 14 is being moved in step [phase], the process jumps to step @, and the route changing claws 33 and 34 are rotated and the guide plate 21 is rotated.

Then, in step [phase], it is checked whether the conveyance member 14 is at the stop position, and if the stop position has not been reached, the process returns to step [phase] to continue the movement of the conveyance member 14, and when the stop position is reached, step The process shifts to @ processing, and the operations of the process unit PR-PC and the first transport means are stopped.

Then, in step [phase], the second conveying means is started.

Then, in step [phase], recording is performed on the recording paper, and in step ■, it is checked whether recording has finished. If not, the process returns to step [phase], and if it is finished, the process moves to step ■, and the process unit Stop the operation of P4.

Then, in step [phase], the conveying member 25 is moved, and in step [phase] it is checked whether it has reached the stop position.

If the stop position has not been reached, the process returns to step [phase], and when the stop position is reached, the second step is started in step [phase].
The operation of the transport means is stopped. That is, the processing explained in FIG.

C. Effects of the invention] As explained above, the present invention provides the following effects in a color recording device:
When performing black printing, the operation of the process unit that performs color printing can be stopped, so the life of the color printing apparatus can be extended.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining the present invention in detail, FIG. 2 is a detailed diagram of FIG. 1, FIG. 3 is a block diagram of a circuit showing an embodiment of the present invention, and FIG. Time chart explaining operation, 5th
This figure is a flowchart explaining the operation of FIG. 3, and FIG. 6 is a diagram explaining an example of the prior art. In the figure, 1a to 1d are photosensitive drums, 2a to 2d are chargers, and 3a to 1d are photosensitive drums.
3d is an exposure device, 48-4d is a developing device, 5a-5d is a transfer device, 6a-6d is a cleaner, 7.27 is a recording paper, 8.40.41 is a recording paper cassette, 9.24 is a standby roller, 10 .18 is a belt, 11a to llc are suction belts, 12 is a fixing device, 13.16.17 is a drive pulley, 14.25 is a conveying member, 15.26 is a gripper detection sensor, 19 to 21.23 are guide plates, 22 is the axis, 28-32.3
5 to 37 are conveyance rollers, 33.34 are route changing water, 38
．． 39 is a pick roller, 45 is a control circuit, 46 to 49, 56.57, 60.61 is a driver, 50
53 are motors, 54.59a to 59d are high voltage power supplies, 55 is a switching circuit, and 58a to 58d are LED control circuits. ■ ■ ■ ■ ■ ■ ■ ■ Flowchart explaining the operation of Figure 3, No. 5fjJ (Part 2)

Claims (1)

[Scope of Claims] A plurality of image bearing members are arranged side by side, and a first conveying means is provided for sequentially conveying a recording medium to each of the image bearing bodies placed side by side, and a toner image is formed on each image bearing member. , an image recording apparatus that records one toner image on the recording medium by overlappingly transferring the toner images onto the recording medium conveyed by the first conveying means, When one of the image carriers is provided with a second conveying means for conveying the recording medium and a toner image is formed on the one image carrier, other image carriers other than the one image carrier While stopping the movement of the body, the first
An image recording apparatus characterized in that the operation of the conveyance means is stopped and the recording medium is conveyed by the second conveyance means.