JPH0398059A - Composite image forming device - Google Patents

Abstract

PURPOSE:To continue processing for composition which is interrupted with a simple operation by setting a transfer sheet ejected after performing processing for jamming in a bypass part and restarting processing for forming an image in case jamming occurs at the time of performing the processing for composition. CONSTITUTION:In case jamming occurs in an inversion part 21 or an intermediate tray part 23 at the time of performing the processing for composition, it is detected by jamming detection means 25 and 26, and a switching means 20 is actuated by a repassing mode setting means 9, so that the succeeding transfer sheet to which processing for forming the image is performed is ejected in an ejection part 5 and the device is set in a repassing mode. When the transfer sheet ejected to the bypass part 4 is set and an operation for restarting is performed after performing the processing for jamming, the transfer sheet which is set in the bypass part 4 is conveyed to an intermediate tray part 23 by the repassing means 9 without performing the processing for forming the image to the transfer sheet 4. Then, the processing for composition is continued by a composite processing continuation means 8 after correcting the counted number by a counting means 8 as much as jammed paper. Thus, the processing for composition which is interrupted is continued with the simple operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to improvements in complex image forming devices such as copying machines and laser beam printers having functions for complex processing such as double-sided processing or combined processing. relates to a composite image forming apparatus that allows composite processing to be continued with simple operations when a jam occurs during composite processing. [Prior Art] A conventional composite image forming apparatus will be explained using a composite copying machine that can perform double-sided copying, composite copying, etc. as an example. In such a multifunction copying machine, for example, when double-sided copy processing is started by setting the sheet number counter and the original,
First, one side of the transfer sheet such as copy paper is copied according to the number of sheets on the counter, and then the same transfer sheet is reversed in the reversing section and stored in the intermediate tray section. After the one-sided processing is completed, the original is reversed or replaced and sent, and then the other side of the transfer sheet stored in the intermediate tray is copied and ejected to the output tray.
Double-sided copying is complete. In addition, in the case of joint processing, the transfer sheet that has been processed on one side is placed in the intermediate tray without being turned over. Conventionally, when a jam (paper jam) occurs in the reversing section or the intermediate tray section during single-sided processing in the above-mentioned double-sided copying or multi-sided processing mode such as combining or copying, the multi-sided processing mode is switched from the above-mentioned multi-sided processing mode to the single-sided processing mode. switching jy4
There is a system that forcibly ejects the transfer sheet (&continued) to the output tray to prevent the continuous occurrence of the above jam. For example, as shown in Figure 4, the counter is set to 10 sheets and double-sided copy processing is performed. If the fifth sheet jams while the transfer sheet is being processed, the subsequent transfer sheets aG+ a7, which are already undergoing single-sided processing, are forcibly ejected to the ejection tray by switching the sheet path.The above-mentioned method for preventing continuous occurrence of jams is disclosed, for example, in Japanese Patent Publication No. 62-175340. [Problems to be Solved by the Invention] In the above-mentioned conventional composite image forming apparatus, in order to complete the above-mentioned double-sided copying process after the above-mentioned jam continuous occurrence prevention process, ,
For example, the following processing is performed. In other words, the broken line X (Figure 4) where the single-sided processing is not completed
The transcription sheet surrounded by a5+ ag+ a9+a,
. When the operator resets the counter to the number 4 and starts copying, these four sheets are processed on one side in the duplex processing mode and stored in the intermediate tray section. After that, after the original is reversed or replaced, all the single-sided processed transfer sheets (i.e. al, a2, a
3. a4+a8+ afi, aS. aI. ) is copied and output to the output tray. Then, the one side was processed and discharged to the discharge tray!
When the operator manually inserts the transfer sheet {aG, a7} into the bypass section of the manual feed tray, etc., switches the mode to single-sided copy mode, sets the counter to 2, and starts the copy process, the same transfer sort is performed. af
．． , a7 are subjected to copy processing.

Furthermore, the same is true when performing composite copy processing. Therefore, when the jam occurs, the operator must perform complex operations such as resetting the counter and switching between duplex processing mode and single-sided processing mode in order to complete the complex processing such as double-sided copying. Ta.

Therefore, when a jam occurs during composite processing, the present invention
This was done with the aim of providing a composite image forming device that can automatically continue and complete composite processing with simple operations. [Means for Solving the Problems] In order to achieve the above object, the present invention includes a bypass section for supplying a transfer sheet, a discharge section for discharging a transfer sheet on which an image has been formed, and a double-sided or interlocking section. a reversing section and a Nakaseki tray section provided for performing complex processing such as processing; a switching means for switching the forwarding path of the transfer sheet between the discharging section side and the reversing section or intermediate tray section side; In a composite image forming apparatus comprising a counting means for counting the number of image-shaped bottom sheets processed, a jam detecting means for detecting a jam in the reversing section or the intermediate tray section, and when a jam is detected by the jam detecting means, a repass mode setting means for switching the switching means to discharge the subsequent transfer sheet subjected to the image forming process to the discharge section and setting it in the repass mode; A re-passing means transports the transferred sheet to the intermediate tray without performing image forming processing, and the count by the counting means is corrected by the number of jammed sheets to perform composite processing! The composite image forming apparatus is characterized in that it is equipped with continuous composite processing continuation means. [Function] As described above, this composite image forming apparatus has F! Therefore, if a jam occurs in the reversing section or the intermediate tray section during composite processing, this jam will be detected by the jam detection means. Then, the switching means is actuated by the repass mode centing means, and the subsequent transfer sheet on which the image formation process has been performed is discharged to the discharging section, and the transfer sheet is sent to the repass mode. Thereafter, when the above-mentioned jam is disposed of, the ejected transfer sheet is set in the bypass section, and a restart operation is performed, the transfer sheet sent to the above-mentioned bypass section is not subjected to image formation processing by the re-passing means. The sheets are conveyed to the intermediate tray section, and the composite processing 118 corrects the count by the counting means by the number of jammed sheets and continues the composite processing. Therefore, when a jam occurs, after handling the jam,
Interrupted composite processing can be automatically continued by simply shifting the ejected transfer sheet to the bypass section and restarting the image forming process. [Examples] Examples embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following examples are examples embodying the present invention, and are not intended to limit the technical scope of the present invention. FIG. 1 is a schematic cross-sectional view showing a multifunction copying machine as an example of a multifunction image forming apparatus to which the present invention can be applied, FIG. 2 is a schematic cross-sectional view showing an example of the display section of the multifunction copying machine, and FIG. f
M+, (b+ is a flowchart showing the composite continuous processing of the same composite copying machine, and FIG. 4 is an explanatory schematic diagram showing an example of the state of the transfer sheet during composite processing. This composite copying shown in FIG. The machine 1 has upper cassettes 2 and 2 lower cassettes 3 provided for feeding paper, and a bypass section 4 consisting of a manual feed tray or a drawer on one side, and copies paper that has been copied on the other side. The multifunction copier 1 has an output section 5 consisting of an output tray or a cassette for discharging transfer sheets such as the above. The control circuit of this multifunction copier l is centered around a control section 8 consisting of a microcomputer CPU, etc., and is used to set various processing modes such as double-sided copying and combination/copying in this control section 8. an input section 9 having a mode setting section 94, a processing number setting section 9b for setting the number of processing sheets, etc., and a number of sheets count display section 3.
0 (Fig. 2), etc. is connected. In accordance with the operation of the input section 9, the multifunction copying machine 1 performs copying processing of the original 7 placed on the original platen 6 based on the sequence stored in the memory M of the control section 8. When the original 7 is placed and the input unit 9 is operated, light is emitted from the light fill, the light is reflected on the original 7, and the reflected light passes through the mirror 12, lens 13, etc. An image is formed on the surface of the drum 14, and the same surface is exposed and scanned. Since the photosensitive drum 14 receives exposure while rotating, an electrostatic latent image corresponding to the original FG image is formed on its surface. When this electrostatic latent image passes through the developing section 15, it is developed into a toner image. Above upper cassette 2. The transfer sheet supplied via the lower cassette 3 or the bypass section 4 is sent to the photosensitive drum l4 using the registration roller 16, and then transferred to the transfer section 1.
7, the above toner image is transferred. The transfer sheet with the toner image transferred is further transferred to a conveyor belt 1.
8, the toner image is sent to a pair of upper and lower fixing rollers l9, and the toner image is fixed thereon. At this time, in the single-sided processing mode, the downstream switching guide 20 is maintained at the position indicated by the broken line 201,
The transfer sheet sent out by the fixing roller 19 is directly discharged to the discharge section 5. When the processing mode is the double-sided processing mode, the switching guide 20 is at the position shown by the solid line, and the direction of movement of the transfer sheet subjected to single-sided processing is directed toward the reversing section 21. A reversing roller 22 is provided at the entrance of the reversing section 21, and the transfer sheet fed into the reversing section 21 by the reversing roller 22 has its traveling direction changed by switching the rotation direction of the reversing roller 22. reversed,
It is fed into the intermediate tray section 23. The transfer sheet temporarily stored in the intermediate tray section 23 is further transferred to the refeed roller 2.
4, it is again supplied to the registration roller 16. From then on,
The transfer sheet passes through the transfer section 17 and the conveyor belt 18 again,
It undergoes fixing processing at the fixing roller 19. At this time, the switching guide 20 is again switched to the broken line state 201, and the transfer sheet that has undergone the double-sided copying process is transferred to the discharge section 5.
is discharged. Furthermore, when the processing mode is the combined processing mode, the switching guide 20 is at the position indicated by ij[20, and the direction of movement of the transfer sheet processed on one side is toward the intermediate tray section 23. The paper is directed and fed into the intermediate tray section 23 as it is. The subsequent processing is almost the same as in the double-sided processing mode. An example of a switching means is the switching guide 20 that realizes the function of switching the conveyance path of the transfer sheet to the discharge section 5 side and the reversing section 21 or intermediate tray section 23 side. The mode of the composite processing such as double-sided or combined processing and the number of sheets to be copied are stored in the memory M of the control section 8 via the input section 9 before the start of the copy processing. When the copying process is performed, the number of processed sheets is counted by the control section 8, and the copying process is continued until the number of printed sheets is reached. The control unit 8 and the like that implement the function of counting the number of copies processed as described above is an example of the counting means. Further, during the double-sided or combined copying process, jams occurring in the reversing section 21 and the intermediate tray section 23 are detected by the optical sensor 25, respectively. Optical sensor 26
For example, the jam LED 27 (FIG. 2) on the display section 10 is turned on via the control section 8. The optical sensor 25, optical sensor 26, etc. that realize the function of detecting a jam in the reversing section 21 or the intermediate tray section 23 described above are examples of the jam detecting means. Next, compound 1 of this compound copier 1! Fig. 3 fat, (b
Steps S1.52, . . . will be explained in order using FIG. 4 with reference to FIG. For example, when the input unit 9 is operated, the processing mode is set to duplex processing mode, and the number of copies to be processed is set to 1.
For example, suppose that a jam occurs on the fifth transfer sheet A5 (FIG. 4) after the copying process is started after the transfer sheet A5 is set to 0 (Sl). This jam occurs in the reversing section 21 or the intermediate tray section 23.
(S2), the switching guide 20 is switched from the state shown by the solid line to the state shown by the broken line 201 (S3), and the subsequent one-sided copy processing, for example, transfer sheets }aG, a7, is transferred to the ejection section. 5 (S4), and display section 1
0 Ja A. LED 27 is lit. At this time, the repass mode is entered (35) based on a command from the microcomputer CPU of the control unit 8, and, for example, the bypass LED 28 of the display unit 1O and the repass LE
D29 is lit. Note that the count value of the number of single-sided copies processed at this time is 7 sheets from transfer sheet al to 37. When the jam described above is detected, the switching guide 20
An example of a repass mode cent means is a means for realizing a function of switching the transfer sheet A6, A7, which has been subjected to single-sided copy processing, to the discharge section 5, and setting the transfer sheets A6 and A7 to the repass mode. Then, the jammed transfer sheet a5 is removed (S
6) The ejected transfer sheets }a6 and a7 are set in the bypass section 4, and the input section 9 is operated again to restart the copying process (S7).

The processing mode at this time is double-sided processing mode (S8),
Also, since the repass mode is set (S9) and the transfer sheets a6 and a7 are set to the bypass section 4 (510), the transfer sheets a6 and a7 are set to the registration roller 1.
6, and is transferred to the transfer unit 17, w! without further copy processing. Feed roller 18. The image passes through the fixing roller l9, is reversed by the switching guide 20, etc., which has been switched to the position shown by the solid line, and is stored in the intermediate tray section 23 (Sll). At this time, the number of sheets processed above is not counted. Note that if the processing mode has been switched to single-sided processing mode in S8 above, single-sided copy processing is performed (S14). An example of the repassing means is a means for realizing the function of rapidly transporting the transfer sheet aG+37, which is sent to the bypass section 4, to the intermediate tray section 23 without copying the transfer sheet aG+37, which is sent to the bypass section 4 in the repassage mode. Then, when all the transfer sheets supplied to the bypass section 4 are accommodated in the intermediate tray section 23, the re-passing mode is re-centered, and the bypass L
ED 2nd and the repass LED 29 are turned off, the number of copies processed is corrected for the one jammed sheet, and the count value is corrected to 6 transfer sheets from A1 to A6 (S12). Then, the normal double-sided copying process continues from the next transfer sheet a7 (313), and thereafter, if there are no problems such as jams, double-sided copying is completed up to 10 sheets. Incidentally, the processing from step S1 to step S13 described above is exactly the same in the case of the joint command copy processing. The above-mentioned count value of the number of copies processed is corrected by the number of jammed sheets to perform complex processing such as double-sided copying and joint copying. The means to implement the continuation function is an example of a compound processing continuation means. As described above, in this multifunction copier 1, when a jam occurs during multifunction processing, etc., after clearing the jam, the subsequent single-sided copying process and ejected transfer sheet is inserted into the bypass section 4 and restarted. Composite processing for the required number of sheets can be done in one step! You can continue to complete the process. Therefore, compared to conventional operations, the operator can easily perform complex processing. You can continue. Although the number of processed sheets is not counted during the SLL re-passing operation, it may be counted during this SLL and corrected by including this count when correcting the count value in the next step 312. ．． [Effects of the Invention] According to the present invention, a bypass section for supplying a transfer sheet, a discharging section for discharging the image-formed transfer sheet, and a bypass section for discharging the transfer sheet subjected to image formation processing, and a bypass section provided for performing complex processing such as double-sided processing or composite processing, are provided. The transfer sheet includes a reversing section and an intermediate tray section, a switching means for switching a forwarding path of the transfer sheet between the ejection section side and the reversing section or the intermediate tray side, and a counting means for counting the number of sheets to be processed for image formation. In the composite image forming apparatus, there is provided a jam detecting means for detecting a jam in the reversing section or the intermediate tray section, and when a jam is detected by the jam detecting means, the switching means is switched to perform image forming processing on the ejecting section. a repass mode cent means for ejecting a subsequent transfer sheet and setting it in a repass mode; Combined processing is done by correcting the count by the re-passing means that transports to the tray section and the above counting means by the number of jammed sheets!
1! Continuing complex processing I1! A composite image forming apparatus is provided, characterized in that it is equipped with connection means. Therefore, when a jam occurs during composite processing, the interrupted composite processing can be resumed by simply setting the ejected transfer sheet in the bypass section after clearing the jam and restarting the image forming process. You can continue.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing a multifunction copying machine as an example of a multifunction image forming apparatus to which the present invention can be applied, FIG. 2 is a schematic cross-sectional view showing an example of the display section of the multifunction copying machine, and FIG. (
a), (bl is a flowchart showing the composite continuation process of the same composite copying machine, and FIG. 4 is an explanatory schematic diagram showing an example of the state of the transfer sheet during composite processing. [Explanation of symbols] 1. ... Compound copying machine 4 ... Bypass section 5 ... Discharge section 8 ... Control section 20 ... Switching guide (switching means) 2l ... Reversing section 23 ... Intermediate tray section

Claims (1)

[Claims] 1. A bypass section for supplying the transfer sheet, a discharge section for discharging the image-formed transfer sheet, and a bypass section provided for performing composite processing such as double-sided or composite processing. A reversing section and an intermediate tray section, a switching means for switching the transport path of the transfer sheet between the discharging section side and the reversing section or the intermediate tray section side, and a counting means for counting the number of sheets to be processed for image formation. In the composite image forming apparatus, there is provided a jam detecting means for detecting a jam in the reversing section or the intermediate tray section; and when a jam is detected by the jam detecting means, the switching means is switched to perform an image forming process on the ejecting section. a repass mode setting means for discharging the subsequent transfer sheet and setting it in the repass mode; and a repass mode setting means for discharging the subsequent transfer sheet and setting the transfer sheet in the repass mode; What is claimed is: 1. A composite image forming apparatus comprising: a re-passing means for transporting the sheets to a copying station; and a composite processing continuation means for correcting the number counted by the counting means by the number of jammed sheets and continuing the composite processing.