JPH09185189A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device capable of executing the reserved job of a different original size. SOLUTION: When the original of a first feeding port is ejected to a second ejecting port, the reserved job is started and the original exists in a second feeding port (S31), the size of the original of the second feeding port is detected (S32). Further, the size of a settable original in the first feeding port is detected (S33) and when the size of the second original is the same as that of the first original (S34/NO) the original is fed from the second feeding port (S37) and the reserved job is executed (S38). Further, when the size of the second original is different from that of the first original (S34/YES), the execution of the reserved job is stopped without feeding the original from the second feeding port, (S39). Therefore, even if the size of the original set in the second feeding port is different from the size of the original of the first feeding port the occurrence of miscopying can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus capable of executing a reserved job in a copying machine, a facsimile machine or the like.

[0002]

2. Description of the Related Art Conventionally, an image forming apparatus has generally been made more sophisticated and multifunctional so that jobs can be automatically executed. For example, there is Japanese Unexamined Patent Application Publication No. 2-8171 "Automatic job batch processing device for copying machine equipped with recirculation type document handling device". This prior art is characterized in that various jobs can be batch processed and pre-programmed to allow the copier to operate unattended in automatic copy mode. Furthermore, Japanese Patent Laid-Open No. 2-152879 "Reservation-type document feeder"
Discloses to provide a highly reliable reservation type document feeder which is compact and does not impair the function of the conventional circulating type document feeder.

[0003]

However, the second image forming mode in the copying machine equipped with the circulation type document feeder (RDH) and the automatic document feeder (ADF or SADF) of the conventional image forming apparatus described above, When a so-called reserved job is executed, no workaround is taken when the size of the original that can be set in the RDH and the size of the original set in the ADF do not match.

An object of the present invention is to provide an image forming apparatus capable of executing reserved jobs of different original sizes.

[0005]

In order to achieve such an object, the image forming apparatus of the present invention has a first sheet feed port capable of re-feeding, and a document is moved to the first sheet feed port. At least one second paper feed port, a conveyance path that enables the image formation of the document fed from the second paper feed port, and a first ejection port that ejects the document to the first paper feed port. A paper port, at least one second paper ejection port different from the first paper feed port, a first image forming mode based on a document fed from the first paper feed port, and a second paper feed port A mode setting device capable of individually setting a second image forming mode based on a supplied original;
Reservation setting means for setting execution of the second image forming mode after execution of the image forming mode. Further, a document is fed from the second paper feed port to form an image for the first copy, and after this document is discharged to the first paper discharge port, this document is supplied from the first supply port to A control unit for controlling the operation of forming the images of the second and subsequent copies and discharging the original document to the second paper ejection port after the image formation for the set number of copies is completed, and the original document set in the second paper ejection port The first detecting means for detecting the size of the sheet before the sheet feeding and the second detecting means for detecting the size of the document settable in the first sheet feeding port. And the second
If the size of the document set in the paper feed port of the second is different from the size that can be set in the first paper feed port, the execution of the second image forming mode is stopped and the document is not fed. I am trying.

Further, when the original is discharged to the first supply port and is fed from the second paper feed port, the execution of the second image forming mode is stopped, whereas the second feed mode is stopped. If it is not necessary to feed paper from the paper mouth, the second image forming mode may be executed.

Further, in the above-mentioned image forming apparatus, the third detecting means for detecting the size of the document set in the second paper feed port after the paper is fed, and the document settable in the first paper feed port If the size of the document A fed from the second paper feed port is different from the size of the document B in the first paper feed port, the Execution of the second image forming mode may be interrupted before A is discharged to the first sheet discharge port.

The above-mentioned image forming apparatus has a document positioning fence that determines the position of the document at the first paper feed port,
When the size of the document A is different from the size of the first paper feed port, the second image forming mode may be executed when the position of the document positioning fence matches the size of the document A.

Further, the above image forming apparatus further has a fence moving means for automatically moving the document positioning fence. When the position of the document positioning fence is different from the size of the document A, the document positioning fence is moved by the fence moving means. It is advisable to change the position of.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of an image forming apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG.
15 to 15, there is shown an embodiment of the image forming apparatus of the present invention.

<Regarding Overall Configuration> FIG. 1 is an internal configuration diagram of an embodiment in which the image forming apparatus of the present invention is applied as a reserved job copying machine. In the image forming apparatus of the present embodiment, A is an image forming apparatus that forms a document image, B is an RDH that conveys a document, C is an ADF that also conveys a document, and D is a finisher. Regarding the respective configurations and operations below, B RDH, C ADF, A image forming apparatus,
The D finishers will be described below in this order.

<Regarding RDH of B> FIG. 2 is an internal structural diagram of the RDH. In the original stack placed on the original table 201 downward, one sheet at the bottom is the vacuum belt 20.
2 and is sent to the document feed port by the movement of the vacuum belt 202. Prior to feeding, the document partitioning claw 215 is temporarily pulled to the upper left side of the document and reappears to be set on the document stack. It The document fed in that state is fed by the document feeding roller 203 to the intermediate conveyance path 2.
It is sent to 04, and stops temporarily. The stopped original is set on the contact glass by the turn roller 205 and the original conveying belt 206 by the subsequent restart. In the case of continuous paper feeding, the above-mentioned paper feeding operation is executed at the same time to set the next document on the intermediate conveyance path 204.

The original set on the contact glass is discharged by the original conveying belt 206 and the original discharging roller 208.
, And the document is discharged to the document discharge path 209, but the discharge method is different between the one-sided document and the two-sided document.

<< In the case of a single-sided original >> The discharge operation of a single-sided original is as follows. The document on the contact glass is guided to the document discharge path 209 by the document transport belt 206, and when the trailing edge of the document once entering the discharge path is detected by the reversing sensor 211, the switchback roller 210 reverses to move the document. Run backwards. At this time, since the paper discharge switching claw 207 is operating, the document is guided to the normal rotation discharge path 213 and discharged by the document discharge rollers 214 onto the document stack on the document mounting table 201 in the same direction.

<In the case of a double-sided original> For a double-sided original, the switchback roller 210 does not rotate in the reverse direction, but goes directly to the reverse discharge path 212. Therefore, when stacking again on the document placing table, the top and bottom are reversed. When the paper is fed in this state, the back surface is exposed on the contact glass, and the original state is restored by passing through the reverse discharge path 212 again.

<Final Document Detection> The final document is detected by the document partitioning claw 215 set on the final document falling into the partitioning claw detection sensor 216 when the final document is fed.

<Regarding ADF of C> FIG. 3 is a structural diagram of the ADF. A document placed downward on the ADF document placing table 251 is separated by a separating blade 252 and a separating roller 253.
Sheets are fed one by one from the lowermost surface by the calling roller 254. The fed document is transported by the transport roller 255, and is further transported onto the contact glass by the RDH turn roller 205 and the document transport belt 206. The subsequent operation is the same as that of the RDH, but when ejecting the paper, the paper ejection switching claw 207 is set so as to close the original paper ejection path 209 of the RDH, and the original is conveyed in the paper ejection direction. The document is discharged onto the document discharge tray 260 by the document discharge rollers 208.

Since the double-sided original is ejected after the copying of the back side is completed, if it is conveyed as it is, the front side and the back side are reversed. Therefore, once the document discharge path 20
Lead to 9. When the reversing sensor 211 detects the trailing edge of the document once entering the discharge path, the switchback roller 21
0 reverses and the original runs in reverse. At this time, the discharge switching claw 207
Is operated to guide the sheet in the direction of the forward discharge path 213, and at the same time, the reversal switching claw 217 is switched to feed the sheet to the intermediate conveyance path 204 to invert the document and guide it again onto the contact glass.

Subsequent ejection is the same as for a one-sided original. 2
An ADF resist sensor 56 is used to accurately stop the original on the contact glass. A document set sensor 257 detects the document set, and a document end sensor 258 detects the final document of the document stack set in the ADF. Reference numeral 259 has a function of detecting the document size by the ADF side fence and a function of restricting the document from being fed obliquely when the document is fed.

The difference between RDH and ADF depends on whether or not a copy process is performed by circulating the original. Since the ADF cannot return the original to the paper feeding position, it is suitable for making a plurality of copies from a single original. However, the RDH can execute the copy operation by the ADF by not circulating the document.

FIG. 4 is a block diagram of a DF control device for controlling document movement of RDH and ADF. CPU is RO
M, RAM, AD converter, serial communication port integrated one-chip microcomputer is used, output port,
The input port is externally attached. A motor driver for driving the motor at a constant speed is connected to the output port, and drives each motor as necessary. Further, loads such as a document feeding clutch and a partitioning claw solenoid are also driven. Signals from a conveyance sensor, a document size sensor, etc. are connected to the input port so that necessary information can be obtained.
The operation of the document is realized by driving the load at a predetermined timing.

<Regarding Image Forming Apparatus A> FIG. 5 shows an operation unit provided in the main body A. In the operation unit 500 of FIG. 5, 501 is a mode clear / preheat key, which also serves as a mode clear key and a preheat key. By pressing this key, it becomes the function of the mode clear key. Function. The mode clear key is for returning each mode to the standard mode. By operating this key, the number of repeats is set to 1, the density is set to automatic density, the paper feed is set to automatic paper feed selection, the scaling ratio is set to the same size, and all other functions such as double-sided are canceled. The preheating key is an alternate switch, and is pressed to bring the machine into a preheating state and to release the preheating state. In the preheating state, the fixing unit is controlled at a low temperature, only the preheating lamp is turned on, and the other displays are turned off to reduce power consumption. Therefore, the preheating key is invalid during the execution of the copy process.

Reference numeral 502 is an interrupt key, which is pressed to make an interrupt copy, and 503 is an enter key, which is pressed to input a numerical value for zoom scaling and binding margin, and 504.
Is a print key (start key) and is pressed when starting the copying operation. This also serves as a ready / weight display, and the green LED lights up when ready and the red LED lights up when waiting.

Numeral 505 is a ten-key pad, which is used for setting the number of copies, inputting the zoom magnification and binding margin values. A clear / stop key 506 has the function of a clear key during standby and a stop key during copying. The clear key is pressed to cancel the set number of copies. The stop key is pressed when the copying operation is interrupted, and the machine stops when the copying operation at that time ends.

Reference numeral 507 denotes a guidance key which is pressed to display the explanation of the basic operation, and 508 denotes a program registration key which allows the user to register a mode frequently used. The registered mode is the program call key 509. Can be called at. A reservation key 510 is pressed to set the reservation mode, and a reservation setting key 511 is pressed after the reservation copy mode is set to confirm the reservation setting.

A display unit 550 is of LCD type. This display has touch keys on its surface, and functions as selection keys as well as displaying functions. FIG.
Shows this display.

The operation of the display section will be described below with reference to FIG. The copying process is performed by the image forming apparatus A, which is the main body of the copying machine.
It is started by setting a necessary processing mode on the operation unit provided on the printer and pressing the print key.

551 is a message display,
At a place where information about the machine is displayed, for example, a message such as "Ready to copy" or "Please add paper" is displayed. Reference numeral 552 is a set display area. 5
Reference numeral 53 denotes a tray selection key, a sheet size, and a remaining amount display area, which indicate an upper tray, a lower tray, and a large capacity tray in order from the left. Reference numeral 554 denotes an automatic paper selection key. When this key is selected, a tray containing paper of the same size as the original is automatically selected.

Reference numeral 555 is pressed when manually adjusting the copy density with the density adjustment key. An automatic density key 556 is pressed when the copy density is automatically adjusted according to the background density of the document. 557 is a same size key, 558 is an expansion key, 559
Is a reduction key, and is pressed to specify 1: 1 copying or reduction / enlargement of the standard size.

A zoom key 560 is pressed to specify an arbitrary magnification between 64% and 142%. Reference numeral 561 is used when it is desired to automatically reduce or enlarge the image of the original in accordance with the size of the paper designated by the paper designation scaling key. 562
Is selected when using the double-sided key to turn a single-sided original into double-sided, a double-sided original into double-sided, or a double-sided original into single-sided. Reference numeral 563 indicates a picture of the copy creation state when the double-sided mode function is selected in the double-sided mode message area. Numeral 564 is a binding margin key, which is 21 mm when a binding margin is required.
It can be set on either the left or right side if A binding margin mode message area 565 displays the binding margin state when the binding margin mode function is selected. 566 is a shift function selection key, 567 is a one-place staple selection key, and 568 is a two-place staple selection key.

FIG. 7 is a block diagram showing the structure of the operation control unit. The operation control unit includes a CPU 601, a ROM 602,
RAM 603, interrupt controller 604, communication report 605 that communicates with the main control unit, LCD controller 606 that controls the LCD display unit and display memory 607, output port 608 for turning on the LEDs, and input of touch keys and push keys. Read DMA
It is composed of a controller 609 and the like.

The operator sets a necessary processing mode in the operation section and inputs a copy start instruction with the print key. The image forming apparatus executes the copy process according to the processing mode set in the operation unit.

<Regarding the Finisher of D> The symbol D in FIG. 1 shows the structure of the finisher. The finisher of this embodiment is composed of a reversing unit and a staple unit. The ejected paper is the paper receiving port 3
It is transported from 01. The reversal switching claw 302 is for reversing the paper /
It operates by non-reversing, and when reversing, the sheet is guided to the reversing path 303, and when reversing is unnecessary, the sheet is conveyed to the staple unit without passing through the reversing path.

In the single-sided copy mode, the discharge to the finisher is from the copy of the first document, so that it is reversed by the reversing unit and is discharged to the staple tray 305 or the finish tray 306. In the two-sided copy mode, the sheet is ejected after the backside copy is executed, so that the sheet is ejected without being inverted.

The staple switching claw 304 switches whether the sheet from the reversing unit is conveyed to the staple tray 305 or the finish tray 306. The staple tray 305 is a tray for stacking sheets that are once discharged to staple a bundle of sheets.
When the sheets of the final document are stacked, the stapler 307
Thus, the sheet bundle is bound and is ejected to the finish tray 306 by the lift-up belt 308.

<Regarding Copy Process> A basic copy process of the image forming apparatus according to the present embodiment, which is configured by the above respective units, will be described with reference to FIG. The original to be copied is conveyed onto the contact glass 101 by RDH or ADF. Then, the original is illuminated by the flash lamp 102 over the entire surface. Electric power is supplied to the power source 103 of the flash lamp 102 prior to the flash, and the flash lamp 102 emits light at a predetermined timing. The light reflected from the document exposes the belt photoreceptor 107 by the first mirror 104, the through lens 105, and the second mirror 106.

The belt photosensitive member 107 is uniformly charged with electric charges by the charger 108, and forms an electrostatic latent image by exposure. The electrostatic latent image on the belt photosensitive member 107 has an unnecessary portion of the electric charge removed by the eraser 109.
0 is developed and sent to the transfer section. The developed document image is then transferred to the transfer paper by the transfer charger 111. This transfer paper is used in the paper feed trays 112 and 11
The sheet is fed from any one of the trays 3, 114 and the double-sided tray 124 and conveyed along the conveying path 115, and the registration roller 1
By means of 16, the image is sent between the photoconductor 107 and the transfer charger 111 at the same timing as the original image on the photoconductor 107. The transfer sheet on which the image is transferred is separated from the photoconductor by the separation charger 120, passes through the conveyor belt 117, and is fixed by the fixing device 118.

In the duplex mode for copying on both sides of the transfer paper,
The double-sided switching claw 121 is switched to the double-sided tray 124 side, and the transfer paper is sent to the double-sided tray 124 from the double-sided approach path 123 and is temporarily stored in the double-sided tray. Further, in the one-sided mode in which copying is performed only on one side of the transfer sheet, the double-sided switching claw 121 is switched to the sheet discharge side, and is conveyed to the discharge switching claw 122. The discharge switching claw 122 has a function of switching between discharging the transfer paper to the main body tray 119 side and discharging to the peripheral machine. The photoconductor 107 is decharged by the charge removal charger 125 after the transfer paper is separated, and the residual toner on the photoconductor is removed by the cleaning device 126 to prepare for the next copying.

Since the belt photosensitive member 107 has a seam, the image forming areas on the belt are determined so as to be at equal intervals for each size, avoiding the seam portion. FIG. 5 is a diagram showing an arrangement of image forming areas (segments) of the belt photosensitive member which is cut and developed at the seams.
5 A4 segments indicated by dashed lines, B4 indicated by broken lines
4 segments and 3 A3 segments indicated by the two-dot chain line
The individual pieces are set to be evenly spaced.

FIG. 9 is a control block diagram for forming an image on the above-described belt photosensitive member and forming an image on the transfer paper conveyed from the paper feed tray. Hereinafter, the operation will be described.

During image formation, in order to avoid seams, it is necessary to determine the image forming area on the photosensitive member prior to image formation. Therefore, a synchronization mark is provided at a fixed distance from the seam at the end of the belt photosensitive member 107, and is detected by the mark sensor 410. In order to determine the image area, it is necessary to drive the photoconductor and detect this mark. Therefore, the drive signal from the output port 402 is input to the motor control circuit 404, and the photoconductor drive motor 408 is driven. The photoconductor drive motor 408 includes an encoder 40
9 is integrally attached to the belt photosensitive member 107.
It outputs a number of pulses proportional to the moving distance. The pulse signal is input to the motor control circuit 404, is used to rotate the photoconductor drive motor 408 at a constant speed, and is also input to the frequency divider 406 to be divided at a predetermined frequency division ratio. After that, it is input to the CPU 401 and the number is counted. Since this value is proportional to the amount of movement of the photoconductor, the image forming area is determined by this count value.

Next, the copying sequence will be described. When the tip of the above segment reaches a predetermined position, the sequence operation starts, and the sequence control counter starts operating. This counter is counted up by the pulse signal from the frequency dividing circuit 406 and is cleared when the sequence is completed. When the counter starts operating and the value reaches the value of CNT_1, a signal is output from the output port 402 to the power pack 405 and the charger 108 operates to uniformly charge the photoconductor 107.

Next, when the count value becomes CNT_2,
A charge start signal is input from the output port 402 to the flash power supply 103, and electric charges are stored in a capacitor in the flash power supply 103 to turn on the flash lamp 102. Further, by sending a flash signal to the flash power source 103, the flash lamp 102 is turned on, the document set on the contact glass 101 is irradiated with light, and the photoconductor 107 is exposed. The count value of this flash signal is output at CNT_3. When the photoconductor 107 further rotates and the leading edge of the image reaches the position of the eraser 109 (= CNT_4), the portion of the eraser 109 corresponding to the image is turned off, and the trailing edge of the image is erased by the eraser 10.
When the position 9 (= CNT_5) is reached, the eraser is fully turned on, the excess charges on the photoconductor are erased, and the electrostatic latent image is left only on the original image portion.

This electrostatic latent image is developed by the developing device 110, and in the case of the front side copy, the paper feed trays 112, 113,
In the case of the back side copy, it is transferred to the paper sent from any one of 114, to the paper sent from the double-sided tray 124.
In order to synchronize with the original image, the sheet starts to be conveyed at different timing depending on which tray the sheet is sent from.

The sheet on which the original image is transferred is conveyed by the conveyor belt 1.
After passing through 17, the image is fixed by the fixing device 118. The double-sided switching claw 121 operates at CNT_6, and switches to the double-sided tray side when stacking on the double-sided tray, and switches to the discharge side otherwise. The discharge switching claw 122 is made of CNT.
It operates by _7 and switches whether the paper is discharged to the main body tray or sent to the peripheral device. The sequence operation ends when the sheet is discharged. The relationship between the count value and the sequence processing is shown in Table 1 below.

(Table 1) Count value Sequence processing CNT_1 Charging ON CNT_FEED Original feeding CNT_DPX Double-sided feeding CNT_2 Charging start CNT_3 Flash ON CNT_EXIT Original discharging CNT_4 Erase OFF CNT_HIGH Upper feeding CNT_MID Middle feeding CNT_5 Erase ON CNT_LOW CNT_6 Double-sided switching claw ON / OFF CNT_7 Paper discharge switching claw ON / OFF

The copying process is realized by sequentially executing this sequence process at the movement timing of the segment. Since normal copy processing is determined by this segment size and the paper size used, the processing speed of A4 size is the fastest, B4 size is the next, 4/5 of A4 size, and 5 minutes of A3 size. Of 3.

The change of the processing speed is realized by changing the correspondence between the segment size and the paper size. That is, even if the paper size is A4, by using the B4 segment, by using the A3 segment, it becomes 5
It is possible to reduce it to 3/3. When the paper size is B4, the size can be reduced to 3/4 by using the A4 segment.

<Regarding Copying Method Using RDH><< Single-Sided / Single-Sided Copy >> Originals placed on the original placing table face down are fed one by one from the lower side of the original bundle, and the original feeding path is set. It is passed and exposed on the contact glass. When the exposure is completed, the document on the contact glass is sent to the left side by the transport belt and discharged to the document discharge tray. As for the next original, the original being exposed begins to be fed before the exposure is completed, so that a copy is made without delay for replacing the original. The state of document feeding and sheet feeding at this time is shown in (1) of FIG. One copy of the document on the document table makes one copy, so this operation is repeated N times to make N copies.

<< Single-sided / Double-sided Copy >> In the case of single-sided / double-sided copy, first, a copy of the document on the front side is made by circulating the document, and the document is once stacked on the duplex tray. In the next cycle, a copy of the original not copied in the first cycle is made on the front copy sheet in the duplex tray to make one duplex copy.

When a plurality of copies are to be produced, when the originals are circulated in the second and subsequent cycles, the front side copy is made at the same time as copying on the paper from the double sided tray, and the sheets are stacked on the double sided tray.
Make copies in N + 1 cycles. The state of document feeding and sheet feeding at this time is shown in (2) of FIG.

<< Duplex / Duplex Copy >> In the case of duplex / duplex copy, first, a copy of the document on the front side is made by circulation of the document, and the document is once stacked on the duplex tray. The document is inverted and discharged by this circulation. In the next circulation, one side of a double-sided copy is created by making a back side copy of the original on the front side copy paper in the double-sided tray. The original is reversed again by the circulation of the original for backside copying, and the original state is returned. That is, when the original document on the original document table circulates twice, one copy is created. The state of document feeding and sheet feeding at this time is shown in (3) of FIG.

In the copying method using the ADF, as shown in (1), (2), and (3) of FIG. 11, a predetermined number of copying processes are performed on the original conveyed on the contact glass. is there. Therefore, before exchanging documents,
The same copy is made in succession.

In the case of double-sided copying, the copied sheets are once stacked on the double-sided tray, and the image of the next original is copied on the back side. In the case of a single-sided original, the next original is the original on the original table, and in the case of a double-sided original, the current original is the inverted original. This inversion operation is as described above.

The operation of the reserved job mode is as follows. When the reserved job is set after the copying operation in the RDH is completed, the original on the original placing table of the RDH is discharged to the discharge tray. In this operation, the originals are conveyed one by one to the exposure position by the original feeding operation of the RDH, and are sent to the discharge tray located on the left as they are. That is, the RDH can be used for the next job by ejecting the original document on the original document table on which the copying process is completed to the ejection tray. After that, if the original is set on the original placing table of the ADF, the original is moved to the RDH and the copy process is executed.
The method of transferring the original set on the ADF original placing table to the RDH original placing table is a combination of the ADF sheet feeding operation and the RDH sheet discharging operation described above.

<< Setting of Reserved Job Mode >> Setting of the reserved job mode (second image forming mode) will be described below. When the reservation key 510 is pressed in the copy start waiting state or during the copy operation, the copy mode currently set is temporarily stored in the memory and a copy mode setting screen different from the current setting screen is displayed.

The screen change when waiting for the start of copying is as follows.
After the mode is cleared, the copy mode setting image is displayed. During the copying operation, the copying screen is saved, the initial setting screen is displayed, and the copy mode can be set.
The copy mode is set in the same way as the normal setting.

After completion of the copy mode settings such as double-sided, scaling, copy number, paper selection, and density setting, the reservation setting key 51
By pressing 1, the reservation of the second job is completed. When the reservation setting is completed, the screen returns to the screen before pressing the reservation key 510, and a message indicating that the reservation is being made is displayed.
The document stack to be copied in the reservation mode is set in the ADF.

The shift to the reservation mode during the copying operation is controlled so that it can be performed not only by pressing the reservation key 510 but also by setting a document on the ADF. Whether to shift to the reservation mode depending on the original set
It can be set by a mode called an up mode in which a function that can be customized by the user is set. With this reserved job mode, the next job can be set during the copying operation, so that the machine can be used effectively without worrying about the end of the previous job.

12 and 13 are flow charts of this reservation mode setting. First, the ON state of the reservation key is checked, and if it is ON (step S1 / YES), it is checked whether the copying start waiting state or the copying process is being executed (S2).
That is, it is checked whether or not it is possible to make a reservation.
4) If neither (S4 / NO), reservation is possible, the current copy mode is stored (S5), and the reservation flag is set (S6). After that, a copy mode setting screen of the operation unit is output (S7), so that a reservation mode can be set.

The original set on the ADF original placing table is checked to check whether the copy process is being executed or the copy start waiting state is in progress. If the copy process is being executed (S8 / YES), reservation by the original set is possible. It is checked whether or not the flag is set (S3), and if it is set, the original set flag is checked to check whether or not the original is set.

When the reservation key is turned on (S1), or when the document is set under the above conditions (S1)
0), the current copy mode is stored in the memory (S6), and a new copy mode setting screen is displayed (S7). The reservation mode can be set also by setting the ADF original, but in that case, it is checked whether or not the original is set, the copying process is in progress (S11), and the reservation is possible flag in the original set. If is set (S1
(2 / YES), the same process as the reservation key ON is executed.

In FIG. 13, the completion of the copy mode setting is checked by pressing the reservation setting key (step S2).
1) If it is pressed, it is checked whether the reserved copy mode is being set. If it is reserved (S22 / YES), the copy mode set during the reservation mode setting is stored in the memory (S23), The reserved flag is cleared (S24), and the reserved flag is set (S25). When the reserved flag is set, the reservation key is controlled to be invalid, and at the same time, the reservation display is executed. Finally, the pre-reservation copy mode is called (S26), and the screen is displayed to complete the reservation mode setting.

<< Reservation Job Copying Operation >> The reservation job copying operation starts by discharging the original document on the RDH original platen to the discharge tray. The copying operation using the RDH is performed by transporting the originals on the original placing table of the RDH one by one onto the contact glass as described above, but the copying operation for the first copy at the time of the reserved job is the contact glass of the ADF. This is performed by a combination of an original document feeding operation and an original document ejecting operation from the RDH contact glass. That is, the originals are fed one by one from the ADF original placing table onto the contact glass,
After the exposure is completed, the sheet is discharged onto the RDH original table. These operations are as described above. In this way, the copy processing method for the second copy (the second round in the case of double-sided copy) is RDH
By controlling the copy process of the first cycle in the mode to be executed at the time of document transfer, it is possible to save a wasteful time of only the transfer and further improve the productivity.

Once the original on the ADF original table is RDH
Since the reserved flag of the reserved job is cleared after the transfer to the document placing table, the reserved display disappears and the next reservation becomes possible.

The detection of the document size of the first paper feed port is determined by the side fence position 218 and the back fence position 219 in FIG. In the case of claim 1, the document size detection of the second paper feed port is determined by the side fence 259 and the stacked document trailing edge detection sensor 260 of FIG.
In the case of claim 3, it is determined by the side fence 259 in FIG. 3 and the ADF registration sensor 256 (from the document transportation speed and transportation time).

The automatic movable fence of the first document feeding section will be described with reference to FIGS. 14 and 15. FIG.
The side fence of No. 4 can be moved by the side fence drive motor, and the back fence of FIG. 15 can be moved by the back fence drive motor. The side fence described here is 218 in FIG. 2 and the back fence is 219 in FIG. The position of the fence is detected by a side fence detection sensor and a back fence detection sensor, respectively.

<Operation Example> An operation example in the single-sided / single-sided mode will be described below. However, the following mutual names in the above description of the configuration and operation and the following description, the second paper feed port / ADF paper feed port, the second paper ejection port / RDH paper ejection tray, and the first paper sheet Paper feed port / RDH paper feed port, first paper discharge port / R
The DH discharge port is a name for the same part.

FIG. 16 is a flowchart showing the operation example 1. In FIG. 16, when the document in the first paper feed port is discharged to the second paper output port and the reservation job is started and there is a document in the second paper feed port (step S31), the second paper feed is performed. Mouth original size (or also called second original size)
Is detected (S32). Further, the settable document size (or the first document size) of the first paper feed port is detected (S33), and if the second document size and the first document size are the same (S34 / If NO, the document is fed from the second paper feed port (S37) and the reserved job is executed (S).
38). If the second document size is different from the first document size (S34 / YES), the document is not fed from the second paper feed port (S39), and the execution of the reserved job is stopped.

According to the above operation example 1, even if the document size set in the second paper feed port is different from the document size in the first paper feed port, the execution of the reserved job is stopped,
It is possible to prevent the occurrence of miscopy.

As a modified example of the above operation example 1, when the reserved job does not have to discharge the original of the second paper feed port to the first paper discharge port (for example, when the number of copies is 1). (S35 / YE
S), a document is fed from the second paper feed port, conveyed on the contact glass, copied, and then conveyed to the second paper discharge port and discharged (S36).

In the operation example 1, when the number of units is 1, the stack mode, or the like, the copy mode can be executed without ejecting the sheet to the first sheet discharge port and feeding it from the second sheet supply port. Nevertheless, since the document size set in the second paper feed port is different from the document size in the first paper feed port, execution of the reserved job is stopped. However, in this modified example, when it is not necessary to discharge the sheet from the first sheet discharge port and feed the sheet from the second sheet supply port, the size of the original set in the second sheet supply port is the first sheet supply. In the case of stack mode copying even if the original size is different from the original size, it is possible to eliminate unnecessary prohibition of reserved jobs.

FIG. 17 is a flowchart showing the operation example 2. In FIG. 17, when the document in the first paper feed port is discharged to the second paper output port and the reservation job starts, if there is a document in the second paper feed port (S41), the first document size is changed. This is detected (S42), the original is fed from the second paper feed port (S43), and the second original size is detected (S44).
The difference between this operation example 2 and operation example 1 is that the document size is known after the document is fed. If the second document size and the first document size are the same (S45 / NO), the reserved job is executed. That is, the original fed from the second paper feed port is conveyed to the contact glass for copying, and then is conveyed and discharged to the first paper ejection port to make a copy of the number of copies-1 (S4).
6), and the sheet is discharged to the second sheet discharge port (S47). Also, the second
If the original size is different from the first original size (S4
(5 / YES), the conveyance of the document is interrupted, and the execution of the reserved job is interrupted (S48).

According to the operation example 2, when the original size fed from the second paper feed port is different from the original size of the first paper feed port, the original is damaged when ejected to the first paper ejection port. Or
The originals may not be aligned, causing problems such as abnormalities in the copy image.However, by interrupting the execution of the reserved job, the original size fed from the second paper feed port Even if the original size is different from that of the first paper feed port, miscopying can be prevented.

FIG. 18 is a flowchart showing the operation example 3. In FIG. 18, when the operation example 1 or the operation example 2 is canceled or interrupted, the first document size is changed to the second document size by, for example, the user moving the fence of the first sheet feeding port. Same as (S50, S5
1, S52), when the first document fed from the second paper feed port is the first document (even if there is no document in the first paper feed port: it is possible to prevent the mixed size document transport) (S52 / N
O), execution of the reserved job is continued (S54).

According to the operation example 3, the document size of the reserved job is different from the size of the first paper feed port (S50, S5).
1, S52), even after the reservation job is canceled or interrupted (S53), the reservation job is not executed when the size of the first paper feed port matches the document size of the reservation job (S52 / NO). It becomes possible (S54).

FIG. 19 is a flowchart showing the operation example 4. In FIG. 19, when the operation is stopped or suspended in the operation example 1 or the operation example 2, the first document size becomes the same as the second document size (S63 / NO), and the second sheet feeding port When the fed original is the first one (even if there is no original in the first paper feed port: it is possible to prevent the mixed size document from being fed), the fence of the first paper feed port is automatically set. By shifting (S62), execution of the reserved job is continued (S64).

According to the operation example 4, even when the document size of the reserved job is different from the size of the first paper feed port, the reserved job copy can be executed without the user's hand.

[0079]

As is apparent from the above description, in the image forming apparatus of the present invention, when the document size set in the second paper feed port is different from the document size in the first paper feed port, When the document is discharged to the first sheet discharge port, the document may be damaged, or the position of the document may not be aligned to cause an abnormality in a copy image. Therefore, the execution of the second image forming mode is stopped. Therefore, even if the document size set in the second paper feed port is different from the document size in the first paper feed port,
By stopping the execution of the second image forming mode, it is possible to prevent the occurrence of miscopy.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram of an embodiment in which an image forming apparatus of the present invention is applied as a reserved job copying machine.

FIG. 2 is an internal structure diagram of RDH.

FIG. 3 is a structural diagram of an ADF.

FIG. 4 is a block diagram of a DF control device that controls document movement of RDH and ADF.

5 is a plan view of an operation unit provided in the main body A. FIG.

FIG. 6 is a plan view of an LCD display unit.

FIG. 7 is a block diagram showing a configuration of an operation control unit.

FIG. 8 is a block diagram for explaining a copy process.

FIG. 9 is a diagram for explaining a process of forming an image on a belt photosensitive member and forming an image on a transfer sheet conveyed from a sheet feeding tray.

FIG. 10 is a diagram for explaining the procedure of RDH copy, in which (1) shows a single-sided original / single-sided copy, (2) shows a single-sided original / double-sided copy, and (3) shows a double-sided original / double-sided copy method. It is a figure.

FIG. 11 is a diagram for explaining the ADF copy procedure, where (1) shows a single-sided original / single-sided copy, (2) shows a single-sided original / double-sided copy, and (3) shows a double-sided original / double-sided copy method. It is a figure.

FIG. 12 is a flowchart of reservation mode setting.

FIG. 13 is a flowchart of reservation mode setting.

FIG. 14 is a perspective view showing a configuration example 1 of an automatic movable fence of a first document feeding section.

FIG. 15 is a perspective view showing a configuration example 2 of an automatic movable fence of the first document feeding section.

FIG. 16 is a flowchart showing a first operation example.

FIG. 17 is a flowchart showing a second operation example.

FIG. 18 is a flowchart showing a third operation example.

FIG. 19 is a flowchart showing a fourth operation example.

[Explanation of symbols]

A image forming apparatus B RDH C ADF D finisher 201 document placing table 202 vacuum belt 203 document feeding roller 204 intermediate transport path 205 turn roller 206 document transport belt 207 discharge switching claw 208 document discharge roller 209 document discharge path 210 switch Back roller 211 Reverse sensor 212 Reverse discharge path 213 Forward discharge path 214 Document discharge roller 215 Document divider claw 216 Partition claw detection sensor 251 Document platen 252 Separation blade 253 Separation roller 254 Calling roller 255 Conveying roller 256 ADF registration sensor 257 Document Set sensor 258 Original end sensor 259 ADF side fence 500 Operation part 501 Mode clear / preheat key 502 Interrupt key 503 Enter key 504 Print key (star Keypad 505 numeric keypad 506 clear / stop key 507 guidance key 508 program registration key 509 program call key 510 reservation key 511 reservation setting key 550 display unit 551 message display 552 set display area 553 tray selection key and paper size / remaining amount display area 554 Automatic paper selection key 555 Density adjustment key 556 Automatic density key 557 Normal magnification key 558 Enlargement key 559 Reduction key 560 Zoom key 561 Paper designation scaling key 562 Double-sided key 563 Double-sided mode message area 564 Binding margin key 565 Binding margin mode message area 566 Shift Function selection key 567 1-place staple selection key 568 2-place staple selection key 569 Post-processing message area 570 finisher -Option key 571 sorter selection key 601 CPU 602 ROM 603 RAM 604 interrupt controller 605 Communication report 606 LCD controller 607 display memory 608 output port 609 DMA controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Higuchi 1-3-6 Nakamagome, Ota-ku, Tokyo Stock company Ricoh Company (72) Inventor Kunio Hayakawa 1-3-6 Nakamagome, Ota-ku, Tokyo Share Inside Ricoh Company (72) Inventor Ryoichi Suzuki 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company, Ltd.

Claims (5)

[Claims] 1. A first paper feed port capable of re-feeding, at least one second paper feed port through which a document can be moved to the first paper feed port, and a second paper feed port. A conveyance path that enables image formation of a document supplied from a mouth, a first paper discharge port for discharging a document to the first paper feed port, and at least one first paper feed port different from the first paper feed port. A second sheet discharge port, a first image forming mode based on a document supplied from the first sheet feeding port, and a second image forming mode based on a document supplied from the second sheet feeding port. A mode setting device that can be individually set, a reservation setting unit that sets execution of the second image forming mode after execution of the first image forming mode, and a document is fed from the second paper feed port. To form an image for the first copy, discharge the document to the first paper discharge port, and then supply the document from the first supply port to To form an image of later eye,
After the image formation for the set number of copies is completed, the control means for controlling the operation of ejecting the original document to the second paper ejection port, and the size of the document document set in the second paper feed port is detected before the paper is fed. And a second detection unit for detecting the size of a document that can be set in the first paper feed port, and the size of the document set in the second paper feed port is The image forming apparatus is characterized in that when the size is different from the size that can be set in the first paper feed port, the execution of the second image forming mode is stopped and the document is not fed. 2. The second image forming mode is stopped when the original is discharged to the first supply port and fed from the second paper supply port, whereas the second image formation mode is stopped. The image forming apparatus according to claim 1, wherein the second image forming mode is executed when it is not necessary to feed paper from a paper feed port. 3. The image forming apparatus further comprises third detecting means for detecting the size of the original document set in the second paper feed port after the paper is fed, and set in the first paper feed port. A fourth detection means for detecting the size of the original, and the size of the original A fed from the second paper feed port;
If the size of document B in the paper feed port of
The image forming apparatus according to claim 1, wherein execution of the second image forming mode is interrupted before the sheet is discharged to the first sheet discharge port. 4. The image forming apparatus further includes a document positioning fence that determines the position of the document in the first paper feed port, and the size of the document A is different from the size of the first paper feed port. In the case, when the position of the document positioning fence coincides with the size of the document A, the second
4. The image forming mode according to claim 3 is executed.
The image forming apparatus as described in the above. 5. The image forming apparatus further includes a fence moving unit that automatically moves the document positioning fence, and when the position of the document positioning fence is different from the size of the document A, the fence moving unit is used. The image forming apparatus according to claim 4, wherein the position of the document positioning fence can be changed.