JPH07129036A - Copying device - Google Patents

Abstract

PURPOSE:To drastically shorten a first printing time by moving a control means to a prescribed position by a moving control means before the start of forming an image based on the result of the comparison between an image magnification and the detected document width. CONSTITUTION:The state of a document width in a continuous form document feeder (CFF) 400 is noticed by the inputs of optical sensors 1000 to 1003 to a CPU 1005 through an I/O interface 1004. When the optical sensors show reactions, the width of the loaded original is detected by a CPU 1005 by comparing the ON/OFF state of the sensor with document width data stored in a ROM 1008. Information on the depression of a key arranged on a control part 1006 is fetched by the CPU 1005 through the I/O interface 1004 at an optional timing, and when it is detected by the CPU 1005 that the key is depressed, data on a set copying mode is stored in a RAM 1009, display data corresponding to the depressed key to be displayed on an LCD 1007 is constituted of the ROM 1008 and the RAM 1009 and outputted through the I/O interface 1004.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus to which an automatic document feeder for feeding a document to a predetermined reading position can be connected.

[0002]

2. Description of the Related Art Conventionally, a copying machine is provided with an automatic document feeder (CFF) which conveys a computer continuous paper as a document to a predetermined reading position and can automatically obtain a desired copy image from a computer output paper. It is configured to be able to. Further, a computer output sheet is provided as a document, and a conveyance path and an intermediate tray for copying an image on both sides of a recording material that is selectively fed are provided, and the CFF drive and the sheet feeding are controlled to continuously output. There is also proposed a copying machine capable of obtaining the following.

In this case, in the copy mode using the intermediate tray, the sheet width regulating plate in the intermediate tray is moved according to the selected sheet size to align the copy sheets. At this time, in the automatic paper selection (APS) mode in which the copy paper to be fed is determined from the original size and the set magnification, the copy start button is pressed and the original is CF.
The sheet width regulation plate is moved to a target position because the sheet size to be fed is not determined until the sheet size is fed from F to the document table and detected by the CFF or the document size detection sensor installed on the document table. I can't.

Further, in the APS mode in which the copy paper to be fed is determined from the document size and the set magnification, the copy start button is pressed, the document is fed from the document feeder to the document table, and the original is fed on the document feeder. Alternatively, the copy start button is selected because the copy paper size most suitable for the image size determined from the detected document size and copy magnification is determined after the document size is detected by the document size detection sensor installed on the platen. The presence or absence of the optimum copy paper could not be detected until the button was pressed.

Further, in the mode for manually selecting the cassette to be fed, even if the wrong paper size is selected, there is no means for issuing any warning before the copy button is pressed, so that useless copying will occur. It happened.

Further, this type of copying apparatus is provided with a blank exposure lamp in order to erase the latent image in an unnecessary area on the photosensitive member. Since the unnecessary area on the photoconductor to be irradiated by the blank exposure lamp changes depending on the set copy magnification, original paper width, copy paper width, etc., the latent image erasing area is covered by the movable blank shutter that blocks the light from the blank exposure lamp. Is being adjusted.

Conventionally, the position of the blank shutter is determined according to the smaller one of the image size on the photoconductor and the copy paper size. At this time, automatic paper selection (APS) that determines the copy paper to be fed from the original size and the set magnification
In the mode, the copy start button is pressed,
Copying paper is not determined until the original is fed from the original feeder to the platen and the original size is detected by the original size detection sensor installed on the original feeder or on the original plate. The blank shutter, which is positioned according to the smaller size and the image size on the photoconductor, could not be moved until the copy button was pressed.

[0008]

Since the conventional copying apparatus is constructed as described above, the size regulation of the intermediate tray is performed after the computer continuous paper is fed to the platen by the CFF and the paper size is known. Since the image forming operation is started after the plate is moved to the optimum position, the time required for the movement operation of the intermediate tray is 1 after the copy button is pressed.
This has been a major obstacle to improving the so-called first print time, which is the time until the first copy sheet is output.

Further, since the warning is given after the original is pulled in once when the optimum paper size is not present, damage to the original due to feeding the original, paper jam, damage to the original, etc. are caused even when the copying is interrupted. There is also a problem that the copy output efficiency is significantly reduced.

Further, in the APS mode, since the presence / absence of the optimum paper size is determined after the document is fed from the document feeder to the platen, the copying operation is interrupted when the optimum paper is not in the paper cassette. To be done. At this time, for example, by leaving the front of the copying machine to replenish the paper,
There is a risk that other users may mistakenly remove the interrupted document sheet from the document feeder. Further, in the manual mode, the sizes of papers such as A type and B type are unfamiliar to general users, and a paper that does not match the original size is manually selected, which causes a waste of copy paper. I was getting tired.

Further, since the document is fed from the document feeding device to the document table and the sheet size is known, the blank shutter starts to move, and after reaching the specified position, the image forming operation starts. The time required for the movement operation of the blank shutter is the time from when the copy button is pressed until the output of the first copy sheet, that is, the first print time is greatly adversely affected. There was a problem.

The present invention has been made to solve the above problems, and compares a width and magnification of a document to be fed and completes a predetermined image formation preparation process before instructing to start copying. By doing so, it is possible to significantly reduce the first print time when carrying out image formation accompanied by document feeding and recording medium regulation or latent image deletion, and
It is an object of the present invention to provide a copying apparatus capable of reliably preventing feeding of recording media having inconsistent sizes.

[0013]

A first copying apparatus according to the present invention comprises a document width detecting means for detecting a document width of a continuous sheet document fed by the document feeding means, and the intermediate placing means. Restricting means for moving and restricting the placement position of the recording medium placed on the recording medium in the direction orthogonal to the recording medium conveying direction, magnification setting means for setting the magnification of the image formed by the image forming means, and this magnification A movement control means is provided for moving the regulating means to a predetermined position before the start of image formation based on the comparison result of the image magnification set by the setting means and the document width detected by the document width detection means. is there.

In a second copying apparatus according to the present invention, a document width detecting means for detecting a document width of a continuous paper document fed by the document feeding means and a magnification of an image formed by the image forming means are set. The magnification setting means to be set, the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detection means, and the feedable size detection result detected by the paper detection means. Based on this, before the start of image formation, a notification unit for determining and notifying the possibility of feeding the recording medium of the optimum size is provided.

In a third copying apparatus according to the present invention, the document width detecting means for detecting the document width of the continuous paper document fed by the document feeding means and the magnification of the image formed by the image forming means are set. The magnification setting means to be set, the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detection means, and the feedable size detection result detected by the paper detection means. Based on this, before the start of image formation, a notification unit for determining and notifying the possibility of feeding the recording medium of the optimum size is provided.

In a fourth copying apparatus according to the present invention, a document width detecting means for detecting a document width of a sheet document fed by the document feeding means, and a latent image area erased by the erasing means are recording media. Latent image area regulating means for moving and regulating in the direction orthogonal to the conveying direction, magnification setting means for setting the magnification of the image formed by the image forming means, image magnification set by the magnification setting means, and the original document. There is provided a movement control means for moving the latent image area regulating means to a predetermined position before the start of image formation based on the result of comparison with the document width detected by the width detecting means.

In a fifth copying apparatus according to the present invention, a document width detecting means for detecting a document width of a continuous paper document fed by a document feeding means, and a latent image area erased by the erasing means are recording media. Latent image area regulating means for moving and regulating in the direction orthogonal to the conveying direction, magnification setting means for setting the magnification of the image formed by the image forming means, image magnification set by the magnification setting means, and the original document. And a movement control means for moving the latent image area regulating means to a predetermined position before the start of image formation based on the result of comparison with the document width detected by the width detecting means.

[0018]

In the first copying apparatus, the movement control means starts the image formation of the regulating means based on the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detecting means. Since it is moved to the predetermined position before, it is possible to significantly reduce the first print time when moving the regulating means to form an image.

In the second copying apparatus, the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means and the feedable size detection detected by the paper detecting means. Since the notifying unit determines and notifies the possibility of feeding the recording medium of the optimum size based on the result and before starting the image formation for the image forming unit,
It is possible to notify the possibility of feeding the recording medium of the optimum size before instructing the start of image formation accompanied by feeding the sheet original.

In the third copying apparatus, the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means and the feedable size detection detected by the paper detecting means are detected. Based on the result, the notifying unit determines the possibility of feeding the recording medium of the optimum size before starting the image formation and informs the possibility of feeding the recording medium of the optimum size. It becomes possible to notify the possibility of sending.

In the fourth copying apparatus, the movement control means controls the latent image area regulating means on the basis of the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means. Since the sheet document is moved to the predetermined position before the image formation is started, it is possible to greatly reduce the first print time when the sheet original is fed and the latent image area regulating unit is moved to form the image. .

In the fifth copying apparatus, the movement control means controls the latent image area regulating means based on the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detecting means. Since it is moved to a predetermined position before the start of image formation, it is possible to greatly reduce the first print time when feeding a continuous paper document and moving the latent image area regulating means to form an image. Become.

[0023]

【Example】

[First Embodiment] FIG. 1 is a sectional view for explaining the structure of a copying apparatus showing a first embodiment of the present invention.

In the figure, 100 is a main body having an image reading function and an image recording function, 200 is a recycle document feeder (RDF) for automatically feeding a document, and 210 is a reservation for the next document during image formation. A reserved original document feeder (sub feeder), 300 is a collating device with staples (staple sorter), and 400 is a continuous paper original document feeder (CFF) that automatically feeds continuous paper such as computer original documents.
00, 210, 300, and 400 are configured to be freely combined with the main body 100 for use.

In the main body 100, 101 is a platen glass on which a document is placed, 102 is an optical path,
Reference numeral 103 denotes an illumination lamp (exposure lamp) for illuminating a document.
Reference numeral 04 is a toner sensor for detecting the presence or absence of toner in the hopper, 105 is a photosensitive drum, 106 is a primary charger, 107
Is a blank exposure unit, and 108 is the photosensitive drum 10
5, a potential sensor for measuring the potential on 5, 109 is a developing device, 1
Reference numeral 10 is a transfer charger, 111 is a separation charger, 112 is a cleaning device, and 113 is a main motor for driving the photosensitive drum 105 and the like. 4000 is a blank exposure unit.

Reference numeral 114 is an upper deck, 115 is a lower deck, 150 is a multi-manual paper feed port, 124 is a side deck, 118 and 119 are paper feed rollers, 120 is a registration roller, 121 is a recording sheet on which an image is recorded, and the fixing side is provided. A conveyor belt 122 conveys the conveyed recording paper, and a fixing device 122 fixes the conveyed recording paper by thermal fixing. The surface of the photosensitive drum 105 is composed of a photoconductor and a seamless photosensitive member using a conductor. The photosensitive drum 105 is rotatably supported by a shaft and operates in response to the pressing of a copy start key, which will be described later. The motor 113 starts rotation in the direction of the arrow in the figure. Next, when the predetermined rotation control of the photosensitive drum 105 and the potential control processing (preprocessing) are completed, the original placed on the original table glass 101 is illuminated by the illumination lamp 103 which is configured integrally with the first scanning mirror, The reflected light of the original document forms an image on the photosensitive drum 105 via the optical path 102.

The photosensitive drum 105 is corona-charged by the primary charger 106. After that, the image (original image) illuminated by the illumination lamp 103 is slit-exposed, and an electrostatic latent image is formed on the photosensitive drum 105 by the known Carlson process.

Next, the electrostatic latent image on the photosensitive drum 105 is
It is developed by the developing roller of the developing device 109 and visualized as a toner image, and the toner image is transferred onto a transfer paper by the transfer charger 110 as described later.

That is, the transfer paper in the upper deck 114, the lower deck 115, or the side deck 124 or the transfer paper set in the multi-manual paper feed port 150 is sent into the main body apparatus and is transferred to the leading edge of the latent image by the registration roller 120. The leading edge of the transfer paper is aligned. After that, the transfer charger 1
When the transfer paper passes between the photosensitive drum 105 and the photosensitive drum 105, it is discharged to the outside of the main body 100.

After the transfer, the photosensitive drum 105 continues to rotate, and its surface is cleaned by a cleaning device 112 composed of a cleaning roller and an elastic blade.

Further, 127 is a double-sided recording side or multiplex recording side, or a paper discharge flapper for switching between a reverse discharging path and a discharge side path, 129 is a reverse discharging switchback roller, and 131 is a double-sided recording side or multiplex recording side. And a reverse discharge flapper for switching between a reverse discharge path and a reverse discharge path. By rotating to the right, the transfer paper is guided to the switchback roller 129. Reference numeral 128 denotes an intermediate tray discharge flapper that rotates according to the length of the paper. The transfer paper that has passed through the paper discharge flapper 127 is turned over by the switchback roller 129 and stored in the intermediate tray 130. A paper feed roller 132 feeds the transfer paper to the photosensitive drum 105 side. During double-sided recording (duplex copying), the paper ejection flapper 127 is raised and the reversal paper ejection flapper 131 is rotated to the right to guide the copied transfer paper to the switchback roller 129. After exiting, the switchback roller 129 is inverted and stored in the intermediate tray 130 via the intermediate tray discharge flapper 128.

For multi-recording (multi-copying), the paper discharge flapper 127 is raised and the reverse paper discharge flapper 131 is rotated to the left to transfer the copied transfer paper to the intermediate tray paper discharge flapper 128.
It is stored in the intermediate tray 130 via.

The intermediate tray 130 can store up to 50 transfer sheets, for example.

At the time of backside recording or multiplex recording to be performed next, the transfer sheets stored in the intermediate tray 130 are fed one by one from the bottom and guided to the registration rollers 120.

During reverse discharge, the reverse discharge flapper 131 is rotated to the right to guide the transfer paper to the switchback roller 129, and then the switchback roller 129.
Is reversed, and the transfer paper is ejected outside the machine by the paper ejection roller 134.

In the RDF 200, 201 is a document bundle 2
This is a loading tray for setting 02. Loading tray 201
Is provided with a width direction restricting plate that restricts the width direction of the document in the document feeding direction so that the document does not skew during document feeding, and slides vertically in the document feeding direction.

In the case of a single-sided original, the conveying roller 203 and the separating roller 204 are used to move the original from the bottom of the original stack 202 to the first position.
The separated originals are separated, and the separated originals are stopped to be conveyed to the exposure position of the platen glass 101 by the conveying roller 205 and the entire surface belt 206, and then the copying operation is started. After copying, the original on the platen glass 101 is
It is returned to the uppermost surface of the original bundle 202 again by the large conveyance roller 207 and the paper discharge roller 208.

In the staple sorter 300, 311
Is a fixed non-sort tray of 20 bins, for example, and collates. In the case of the sort mode, the copied sheets are sequentially ejected from the sheet ejection roller 134 of the main body, enter the conveyance roller 301 of the staple sorter 300, pass the conveyance path 303, and are ejected from the ejection roller 305 to each bin of the tray 312. Each time it is done, a bin shift motor (not shown)
Move each bottle up and down to collate. When the staple mode is selected and a staple signal is input from the main body 100, the staple device 320 staples the sheets in each bin while moving the bin shift motor one bin at a time.

The CFF 400 makes the RDF 200 and the sub feeder stand by above and is connected and arranged at a predetermined position on the upper surface of the main body 100.

In the CFF 400, 401 is the CF
It is continuous paper fed by F400. Reference numeral 402 denotes a tractor that conveys a document using a conveyance hole for continuous paper, and is rotated by a pulse drive motor 403. Reference numeral 404 is a paper discharge roller for discharging the document. Reference numeral 405 is a light source unit, 406 is a light collecting plate, 407 is a CFF platen glass, and 408 is a cooling fan for suppressing a temperature rise inside the CFF 400.

Reference numeral 409 denotes an upper cover for holding the continuous paper original 401. A detection sensor 410 is used for detecting a document and detecting a jam. Further, during the CFF operation, the scanning mirror 171 of the main body 200 is arranged in the direction of the arrow in the figure, and the CFF mirror 170 is arranged above. As a result, the continuous paper 401 on the CFF 400 is illuminated by the illumination lamp 103 formed integrally with the CFF mirror 170, and the reflected light of the document is imaged on the photosensitive drum 105 via the CFF mirror 170 and the optical path 102. . Figure 2
FIG. 2 is a plan view showing an example of an operation panel provided on the main body 100 shown in FIG. 1, and is roughly composed of a key group and a display group.

In the key group, an asterisk (*) key 601 is used by an operator (user) in a setting mode such as a binding margin amount setting or a document frame erasing size setting. An all reset key 606 is pressed to return the mode being set to the standard mode.

Reference numeral 605 denotes a copy start key (copy start key), which is pressed when instructing the start of copy processing.

A clear / stop key 604 has the function of a clear key during standby (standby) and a stop key during copy recording. This clear key is also used to cancel the set number of copies. The stop key is pressed when interrupting continuous copying. After the copying at this point is completed, the copying operation is stopped.

Reference numeral 603 is a ten-key pad which is pressed when setting the number of copies. It is also pressed when setting the asterisk mode. A memory key 619 allows the user to register modes that are frequently used. In this embodiment, four modes M1 to M4 can be registered. Copy density keys 611 and 612 are pressed when manually adjusting the copy density. 613 is AE
This key is pressed when the copy density is automatically adjusted according to the density of the original or when the AE (automatic density adjustment) is canceled and the density adjustment is switched to manual (manual). 607 is a cassette selection key for the upper deck 11
4, pressed when selecting the lower deck 115, the side deck 124, and the multi-manual paper feed port 150. Also,
When a document is placed on the RDF 200, APS (automatic paper cassette selection) can be selected by the cassette selection key 607. When APS is selected, a cassette having the same size as the original is automatically selected. Reference numeral 610 denotes a unity size key, which is pressed when copying a unity size (original size). 61
An auto scaling key 6 is pressed to automatically specify reduction / enlargement of the image of the original in accordance with the designated transfer paper size.

Reference numeral 626 denotes a double-sided key, which is pressed to make a double-sided copy from a single-sided original, a double-sided copy from a double-sided original, or a single-sided copy from a double-sided original. A binding margin key 625 can create a binding margin of a designated length on the left side of the transfer sheet. A photo key 624 is pressed when copying a photo original. Reference numeral 623 denotes a multiple key, which is pressed when creating (combining) images from the two originals on the same surface of the transfer paper.

Reference numeral 620 denotes an original frame erasing key, which is pressed when the user erases the frame of a fixed-size original, and the original size at that time is set by an arrow key 627 and an OK key 628. A sheet frame erasing key 621 is pressed when erasing a document frame according to the size of the cassette.

Reference numeral 614 denotes a paper discharge method selection key for selecting a staple, sort, or group paper discharge method. When the paper after recording is connected to a stapler, a staple mode and a sort mode are selected or a selection mode thereof. When the sorting tray (sorter) is connected, the sort mode and the group mode can be selected or the selected mode can be canceled.

Reference numeral 615 denotes a paper folding selection key, which is used to fold a recorded paper of A3 or B4 size into a Z-shaped cross section, and A3 or B fold.
It is possible to select either one of the half-folding in which the recorded paper of size 4 is folded in half, and to cancel the selection.

In the display group, reference numeral 701 denotes an LCD (liquid crystal) type message display for displaying information relating to copying. For example, one character is made up of 8 × 8 dots, a message for 40 characters, a fixed scale key 608,
609, the same size key 610 and the zoom keys 617 and 618 can display the copy magnification set. This display 70
Reference numeral 1 is a semi-transmissive liquid crystal, and a backlight is turned on.
An AE display 704 is turned on when AE (automatic density adjustment) is selected by the AE key 613. Reference numeral 709 denotes a preheat indicator, which is turned on when performing a double-sided copy from a double-sided original or a double-sided copy from a single-sided original.

When the RDF 200 is used in the standard mode, the number of copies is 1, the density AE mode, automatic paper selection, normal size, single-sided copy to single-sided copy are set. In the standard mode when the RDF 200 is not used, the number of sheets to be copied is one, the density manual mode is set, and the setting is set to single-sided copying from a single-sided original. The difference between when the RDF 200 is used and when it is not used is determined by whether or not a document is set on the RDF 200.

FIG. 3 is a block diagram illustrating the control configuration of the CFF 400 shown in FIG. 1 and the main body. The configuration and operation will be described below.

Inputs of the optical sensor 1000, the optical sensor 1001, the optical sensor 1002, and the optical sensor 1003 notify the CPU 1005 of the state of the document paper width of the CFF 400 via the I / O interface 1004. When the optical sensor responds, the CPU 1005 detects the width of the placed document by comparing the on / off state of the sensor with the document width size data stored in the ROM 1008. Also, CPU
1005 takes in key press information on the operation unit 1006 via the I / O interface 1004 at an arbitrary timing, and when it detects that the key is pressed, it stores the data of the set copy mode in the RAM 1009 and at the same time. Appropriate display data corresponding to the key pressed on the LCD 1007 is composed of the ROM 1008 and the RAM 1009, and is output via the I / O interface 1004.

In the thus configured first copying apparatus, the image magnification set by the magnification setting means (operation unit 1006) and the document width detection means (optical sensor 1000-
Based on the comparison result with the document width detected by 1003), the movement control means (CPU 1005) controls the regulation means (sheet width regulation plate 1011) to the image forming means (optical scanning system, photoconductor, other photoconductor). It is possible to significantly reduce the first print time after the image formation start instruction when the image forming is performed by moving the regulating means because the moving means is moved to a predetermined position before the image formation is started. Becomes

The magnification can be set from the operation unit 1006 in the same manner, and the input can be made from the ten keys, the fixed-size variable key, the same-size key, the zoom key, etc. on the operation unit 1006. further,
The paper type or APS mode can be selected by the paper selection key. If APS mode is selected,
The CPU 1005 calculates a new position from the input data of the document width and the magnification, compares the new position with the current position stored in the RAM 1009, and determines the sheet width regulating plate 101 of the intermediate tray.
When it is necessary to move 1 from the current position to a new position, the CPU 1005 sends a drive pulse to the stepping motor 1010 via the I / O 1004 to move the paper width regulation plate 1011 to the target position.

FIG. 4 is a perspective view for explaining the paper width detection operation of CFF 400 shown in FIG. The configuration and operation will be described below.

The tractor 402 slides vertically in the feeding direction of the continuous paper 401 according to the width of the continuous paper 401, for example, computer paper. An optical sensor unit 4 for detecting the presence or absence of computer paper and the width of the computer paper is provided below the upper cover 409.
10 to 413 (the optical sensors 1000 to 100 shown in FIG.
3) is disposed in the illustrated position to detect the presence and width of computer paper as continuous paper.

FIG. 5 is a plan view of relevant parts for explaining the structure of the intermediate tray 130 shown in FIG. In the figure, 501
Is a sheet width regulation plate that regulates the position of the transfer sheet on the intermediate tray 130. The sheet width regulation plate 501 is moved according to the sheet width by the sheet width regulation plate drive motor 502. The paper width regulation plate drive motor 502 is controlled by the DC controller 503. Further, 504 is a light shielding plate that blocks the optical sensor 505 when moved to the outside of the paper width regulating plate 501. The DC controller 503 controls the sheet width regulation plate drive motor 502 with the position where the light sensor 505 is shielded by the light shielding plate 504 as a control reference position.

The continuous paper copy processing operation in the copying apparatus according to the present invention will be described below with reference to FIGS. It should be noted that each procedure is executed on the assumption that the copying apparatus is not in the copying operation. When the copy start key 605 is pressed, another copy sequence (not shown) is started.

FIG. 6 is a flow chart showing an example of an idle state processing procedure in the copying machine according to the present invention.
Note that (1) to (5) indicate each step.

When there is no key input and nothing is placed on the platen, the copying apparatus main body is in an idle state of waiting for a state of a sensor and a key input state. First, it is determined whether or not a key input is made. If it is determined (1) and if YES, a key input processing routine described later is executed (2), and after the processing is completed, the procedure returns to step (1).

On the other hand, if the judgment in step (1) is NO, it is judged whether the APS mode is being set (3). If NO, the process returns to step (1). It is determined whether or not the document width is detected (4). If NO, the process returns to step (1). If YES, a sheet width regulation plate moving processing routine described later is executed (5), and after the processing is completed, step (1) ) Return to.

FIG. 7 is a flow chart showing an example of the detailed procedure of the paper width regulation plate movement processing routine in the copying apparatus according to the present invention. Note that (1) to (5) indicate each step.

The width of the original is determined based on the respective optical sensor input data of the optical sensor units 410 to 413 shown in FIG. 4 (1). Next, the set magnification data stored in the RAM 1009 is read (2), the paper most suitable for the product value of the document width and the magnification is selected, the new position of the paper width regulating plate is calculated (3), and the current paper is selected. It is determined whether the position where the width regulating plate is arranged and the newly calculated position match (4). If YES, the process returns to the idle process, and if NO, the motor drive circuit 1106 causes the stepping motor 1107 to operate.
The predetermined pulse data is output to the paper width regulation plate 1108.
Is moved to the designated position (5), and the process returns to the idle process.

FIG. 8 is a flow chart showing an example of a detailed procedure of a key input processing routine in the copying apparatus according to the present invention. Note that (1) to (3) indicate each step.

When a key input is detected in step (1) shown in FIG. 6, the key input data is analyzed (1) and R
The area of AM1009 is updated (2) and L
The display on the CD display 701 is updated (3), and then the process returns to the idle process.

On the other hand, when the APS mode is not selected, there is a key input and the regulation plate movement processing routine is executed when the selected paper size changes. [Second Embodiment] FIG. 9 is a block diagram for explaining the control configuration of a CFF in a copying machine showing a second embodiment of the present invention. The configuration and operation will be described below.

The voltage that changes depending on the resistance value of the variable resistor 1110 connected to the tractor of the CFF 400 shown in FIG. 1 is converted into digital data by the A / D converter 1109, and the CPU 1 via the I / O interface 1100.
03 will be notified. CPU 103 is an A / D converter 110
The data from 9 is monitored, and the width of the placed document is detected by referring to the comparison table of the digital data stored in the ROM 1101 and the document width size data. Also, the CPU 11
03 receives the key press information on the operation unit 1104 via the I / O interface 1100 at an arbitrary timing, and when it detects that the key has been pressed, the data of the set copy mode is stored in the RAM 1102 and at the same time. L
Appropriate display data corresponding to the key pressed on the CD display 701 is stored in the ROM 1101 and the RAM 1102.
And output via the I / O interface 1100.

Similarly, the magnification can be set from the operation unit 1104. The ten-key pad 603, the fixed-size variable-size key 6 on the operation unit can be set.
08, 609, the same size key 610, and the zoom key 617. Further, a paper type or APS mode can be selected by the paper selection key 607. When the APS mode is selected, the CPU 1103 calculates a new position from the input data of the detected document width and magnification, and R
If it is necessary to move the sheet width regulating plate 1108 of the intermediate tray 130 from the current position to a new position as compared with the current position stored in the AM 1102, the CPU 1103
Sends a control signal to the motor drive control circuit 1106 via the I / O interface 1100, moves the sheet width regulating plate 1108 to the target position by the motor 1107, and stores the reached position in the RAM 1102.

FIG. 10 shows the variable resistor 111 shown in FIG.
FIG. 3 is a perspective view of a main part for explaining a paper width detection mechanism based on 0.
The configuration and operation will be described below.

As shown in this figure, the upper cover 409
Open the computer original 401, and manually move the tractor 402 according to the original width to set the computer original 401 on the tractor 402.
The resistance value of the variable resistor 410 connected to 02 changes according to the document width. The idle processing operation of the copying apparatus according to the second embodiment of the present invention will be described below with reference to the flowchart shown in FIG.

FIG. 11 is a flow chart showing an example of the idle processing procedure in the copying machine showing the second embodiment of the present invention. Note that (1) to (6) indicate each step.

When the copy start key 605 is pressed, another copy sequence (not shown) is activated. When there is no key input and nothing is placed on the platen, the copying machine is in an idle state, which waits for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 8 is executed (5), and when there is a change in the magnification or the paper selection mode (6 ), The paper width regulation plate movement processing routine shown in FIG. 7 is performed (4). Also, the tractor 402 of the CFF 400
If the width data from (3) has changed (3), the paper width regulation plate movement processing routine shown in FIG. 7 is performed (4).

On the other hand, when the APS mode is not selected (2) and the paper size is determined and the selected paper size is changed, the paper width regulation plate movement processing routine shown in FIG. 7 is executed. (4). [Third Embodiment] FIG. 12 is a block diagram for explaining the control configuration of a CFF in a copying machine showing a third embodiment of the present invention. The configuration and operation will be described below.

The voltage that changes according to the resistance value of the variable resistor 1206 connected to the tractor 1207 of the CFF 400 is converted into digital data by the A / D converter 1205, and is transferred to the CPU 12 via the I / O interface 1204.
Let 00 know. The CPU 1200 is the A / D converter 120
The data from No. 5 is monitored, and the width of the placed document is detected by referring to the comparison table of the digital data stored in the ROM 1202 and the document width size data. In addition, the CPU 12
00 receives the key press information on the operation unit 1209 at an arbitrary timing via the I / O interface 1204, and when it detects that the key has been pressed, it stores the data of the set copy mode in the RAM 1201 and presses it at the same time. Appropriate display data corresponding to the key
2 and the RAM 1201 and outputs to the LCD 1208 via the I / O interface 1204. Similarly, the magnification can be set from the operation unit 1209.
09 numeric keypad 603, standard variable magnification keys 608, 6
09, the same size key 610, and the zoom keys 617 and 618. Further, a paper type or APS mode can be selected by the paper selection key 607.

The state is changed by the key input and the movement of the tractor 1207, and the paper width regulating plate 121 of the intermediate tray is changed.
When it is necessary to move 1 from the current position to the new position, the CPU 1200 sets an arbitrary time in the timer 1203, holds the current state while the timer 1203 is counting, and then calculates the moving position again. The drive signal is sent to the stepping motor 1210 via the I / O interface 1204, the sheet width regulating plate 1211 is moved to the target position, and the reached position is stored in the RAM 1201.

Next, the idle processing operation in the copying machine showing the third embodiment of the present invention will be explained with reference to the flow chart shown in FIG.

FIG. 13 is a flow chart showing an example of the idle processing procedure in the copying apparatus showing the third embodiment of the present invention. Note that (1) to (9) indicate each step.

When the copy start key 605 is pressed, another copy sequence (not shown) is activated. When there is no key input and nothing is placed on the platen, the copying machine is in an idle state, which waits for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit 1209 (1), the key input processing routine shown in FIG. 8 is executed (8), and at this time, the magnification or the paper selection mode is changed. (9), or when the width data from the tractor 1207 of the CFF 400 changes (3),
A constant count value is set in the timer 1203 (4).
Then, after a lapse of a certain time (5), the contents of the RAM 1201 are referred to again, and when the storage state is changed (6), the paper regulation plate movement processing routine shown in FIG. 7 is executed (7), Return to step (1).

On the other hand, when the APS mode is not selected (2) and the paper size is determined and the selected paper size changes, a constant count value is set in the timer 1203 (4). . [Fourth Embodiment] FIG. 14 is a block diagram for explaining the control arrangement of an RDF 200 in a copying machine showing a fourth embodiment of the present invention.

In the figure, 1301 is a CPU, which performs processing based on a program stored in a ROM 1302 which is a read-only memory. The ROM 1302 stores a program, a data string necessary for executing a copy sequence, screen data displayed on the LCD display 1313, and the like. A RAM 1303 stores state data and the like associated with execution of the copy sequence. 1304 is I
The I / O interface functions as an interface between the CPU 1301 and various external sensors and input / output devices. Reference numeral 1314 denotes a document circulation type automatic document feeding control unit (RD).
FC), the optical sensors 1305-1 placed at predetermined positions
Since the signal of 307 differs depending on the width of the document placed on the RDFC 1314, it is transmitted to the CPU 1301 via the I / O interface 1304 as the document width data. The RDFC 1314 functions as a control unit of the RDF 200.

As for the sheet size, the variable resistor 1308 for detecting the upper sheet size, the variable resistor 1309 for detecting the lower sheet size, and the variable resistor 1 for detecting the deck sheet size are used.
The CPU 1301 takes in the data obtained by converting 310 into a digital value by the A / D converter 1311 via the I / O interface 1304, and detects it by referring to the data table stored in the ROM 1302.
The operation unit keyboard 1312 is used to select a magnification, a paper feed selection mode, a paper feed stage, and the like. As for the information of the copying operation such as the number of sheets and the paper feeding mode and the warning that there is no suitable copying paper, the CPU 1301 I / Os the front screen stored in the ROM 1302 based on the copying apparatus state stored in the RAM 1303. It is displayed by transferring it to the LCD display 1313 via the interface 1304.

In the second copying apparatus having such a configuration, the image magnification set by the magnification setting means (operation unit keyboard 1312) and the document width detection means (optical sensor 1).
305 to 1307) and the result of comparison with the document width detected by the sheet detection means (variable resistors 1308 to 13).
The notification means (the CPU 1301 notifies the LCD display 1313) based on the detection result of the sheet size that can be fed detected by 10) provides the image forming means (photoreceptor, optical scanning system, other image formation on the photoreceptor). Means), and the possibility of feeding the recording medium of the optimum size is determined and notified before the image forming is started. Therefore, the possibility of feeding the recording medium of the optimum size is notified before the image forming start instruction accompanied by the sheet document feeding. It becomes possible.

FIG. 15 is a perspective view showing the external structure of the RDF 200 shown in FIG.

In the figure, reference numeral 201-1 denotes a document stacking table on which a document sheet to be copied is placed. Two
Reference numeral 02-1 denotes a document sheet size control plate, which is configured to be movable along a guide in a direction orthogonal to the document transport direction as shown in FIG. 16 described later in order to prevent the document sheet from being biased or skewed. . Reference numeral 203-1 denotes an auxiliary document placing table, which is rotated to open outward when a large document such as an A3 size document is placed and abuts against the supporting portion so that a predetermined plane of the document table glass and Stop with elevation.

FIG. 16 is a plan view showing the external structure of the RDF 200 shown in FIG.

In the figure, reference numeral 207-1 denotes a document placing table cover, which protects the mechanism part for pulling in and discharging the document. Below the document mounting table cover 207-1, optical sensors 1305 to 1307 for document detection shown in FIG. 14 are arranged at positions indicated by broken lines in the figure. These optical sensors 13
The presence or absence of a document and its width are detected from the output states of 05 to 1307.

Next, the RDF control operation in the copying machine according to the present invention will be described with reference to FIGS.

FIG. 17 is a flow chart showing an example of the idle processing procedure in the copying machine showing the fourth embodiment of the present invention. Note that (1) to (4) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), a key input processing routine shown in FIG. 18 which will be described later is executed (2), and after completion of the key input processing routine, RDF is executed.
200 optical sensors 1305, 1306, 1 for detecting originals
When there is a detection input from 307 (3), a warning display processing routine shown in FIG. 19 described later is performed (4), and after the processing is completed, the procedure returns to step (1).

FIG. 18 is a flow chart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the fourth embodiment of the present invention. Note that (1) and (2) indicate steps.

First, the key data is analyzed (1) and the RAM
The data is stored in the key data storage area 1303, the contents are updated (2), and the process returns to the idle processing routine.

FIG. 19 is a flow chart showing an example of a detailed procedure of a warning display processing routine in the copying apparatus showing the fourth embodiment of the present invention. Note that (1) to (9) indicate each step.

First, the optical sensors 1305, 1306, 13
The width of the document is determined from 07 (1). Then RAM1
Read setting magnification data stored in 303 (2),
The paper most suitable for the product value of the document width and the magnification is selected (3).

At this time, when the APS mode is selected, the paper size of the set cassette is searched (5), and if there is no similar cassette (6), it is confirmed that there is no paper of the optimum paper series. LCD as shown in FIG.
The warning display 1 to be displayed on the display 1313 is set (7), and the process returns to the idle process.

As shown in FIG. 20 (a), in the warning display 1, "there is no optimum paper type" is displayed in black and white on the display screen of the LCD display 1313, and the optimum candidate is selected. The paper names “a” and “b” are displayed.

On the other hand, if the judgment in step (4) is NO, it is judged whether the image size is the same size as the series of the selected cassette if the APS mode is not selected (8) and the width size of the image is selected. If the paper widths of the cassettes are different, the warning display 2 shown in FIG. 20B indicating that different-width papers are selected is displayed on the LCD display 1313 (9), and the process returns to the idle process.

As shown in FIG. 20 (b), in the warning display 2, "Not optimum paper type" is displayed in black and white on the display screen of the LCD display 1313, and a candidate optimum paper name is displayed. Is displayed as "c" and "d". [Fifth Embodiment] FIG. 21 is a block diagram for explaining an RDF control configuration in a copying machine according to a fifth embodiment of the present invention.

In the figure, 1401 is a CPU, which is a ROM
Processing is performed according to the program stored in 1402.
The ROM 1402 stores a program, a data string required for controlling the copying apparatus, screen data displayed on the LCD display 1410, and the like. 1403 is RA
At M, the status data of the copying machine and the like are stored. An I / O interface 1404 is an interface between the CPU 1401 and various external sensors and input / output devices. 1
Reference numeral 412 is a document size regulating plate installed on the RDF 200, and an A / D converter 1405 via a variable resistor 1411.
The input voltage to the A / D converter 1405 changes depending on the position of the regulation plate 1412. A / D
The data converted by the converter 1405 is converted into C width data via the I / O interface 1404 as original width data.
It is transmitted to the PU 1401. As for the paper size, the resistance values of the variable resistor 1406 for the upper paper size, the variable resistor 1407 for the lower paper size detection, and the variable resistor 1408 for the deck paper size detection are converted into digital values by A / D converter 1405. The converted data is taken in by the CPU 1401 via the I / O interface 1404, and the RO
The detection is performed by referring to the data table stored in M1402. From the operation unit keyboard 1409, a magnification, a paper feed selection mode, a paper feed stage, and the like are selected. The CPU 1401 sends a RAM 1403 warning about the copy operation information such as the number of sheets and the paper feed mode and the warning that there is no suitable copy paper.
ROM 1402 based on the state of the copying machine stored in
The display screen stored in the I / O interface 1404.
It is displayed by transferring to the LCD display 1410 via.

FIG. 22 is a plan view of relevant parts for explaining the structure of the document size regulating plate 1412 shown in FIG.

As shown in this figure, the original placing table 220-1
Place the original on top of it and adjust the original width to match the original width.
When 1-1 is moved manually, the document width regulating plate 221-1
The resistance value of the variable resistor 222-1 connected to the variable resistor 222-1 changes according to the document width. The idle processing operation of the copying machine according to the fifth embodiment of the present invention will be described below with reference to the flowchart shown in FIG.

FIG. 23 is a flow chart showing an example of the idle processing procedure in the copying machine showing the fifth embodiment of the present invention. Note that (1) to (5) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a state change of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 18 is executed (4). At this time, if there is a change in the magnification or the paper selection mode (5), the warning display processing routine shown in FIG. 19 is executed (3), and the process returns to step (1). Also, when the width data from the document width regulating plate 221-1 of the RDF 200 changes (2), the warning display processing routine shown in FIG. 19 is executed (3), and the process returns to step (1). [Sixth Embodiment] FIG. 24 is a block diagram for explaining the RDF control configuration in a copying apparatus according to the sixth embodiment of the present invention.

In the figure, 1501 is a CPU, and R
Processing is performed based on the program stored in the OM 1502. In the ROM 1502, in addition to programs, a data string necessary for controlling the copying apparatus and the LCD display 151.
The data of the screen to be displayed at 0 and the like are stored. 1503
Is a RAM for storing status data of the copying apparatus. 15
Reference numeral 04 denotes an I / O interface, which is an interface between the CPU 1501 and various external sensors and input / output devices. Reference numeral 1512 denotes an original size regulation plate installed on the RDF 200, which is a variable resistor 150 for detecting the upper sheet size.
6, since it is connected to the variable resistor 1507 for detecting the lower sheet size and the variable resistor 1508 for detecting the deck sheet size, A is set according to the position of the document size regulating plate 1512.
The input voltage to the / D converter 1505 changes. The data converted by the A / D converter 1505 is sent as CP width data to the CP via the I / O interface 1504.
It is transmitted to U1501. As the paper size, the resistance values of the variable resistor 1506 for detecting the upper paper size, the variable resistor 1507 for detecting the lower paper size, and the variable resistor 1508 for detecting the deck paper size are digitalized by the A / D converter 1505. The CPU 1501 fetches the data converted into R via the I / O interface 1504,
The detection is performed by referring to the data table stored in the OM 1502. From the operation unit keyboard 1509, a magnification, a paper feed selection mode, a paper feed stage, and the like are selected. The CPU 1501 issues an RA for warnings such as the number of units and paper feed mode.
RO based on the state of the copying machine stored in M1502
It is displayed by transferring the display screen stored in M1503 to the LCD display 1510 via the I / O interface 1504. Reference numeral 1511 is a variable resistor.

Key input and document size control plate 1512
When the state changes due to the movement of the timer, the CPU 1501 sets an arbitrary time in the timer 1513,
The current state is held during the counting of, and after the timer 1513 has finished counting, after confirming that the changed state is confirmed, the CPU 1501 sends the necessary screen data to the ROM 150.
2 to the LCD display 1510 via the I / O interface 1504. The idle processing operation of the copying apparatus according to the sixth embodiment of the present invention will be described below with reference to the flowchart shown in FIG.

FIG. 25 is a flow chart showing an example of the idle processing routine in the copying machine showing the sixth embodiment of the present invention. Note that (1) to (8) indicate each step. Each process is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed,
Another copy sequence is activated.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 18 is performed (7). At this time, if there is a change in the magnification or the paper selection mode (8), or if the width data from the document size regulation plate 1512 of the RDF 200 changes (2),
When a fixed count value is set in the timer 1513 (3), and after a fixed time has elapsed (the timer value of the timer 1513 is “0”) (4), the contents of the RAM 1503 are referred to again and there is no state change (5), that is, When the input data is confirmed, the warning display processing routine shown in FIG. 19 is executed (6), and after the processing is completed, the processing returns to the idle processing.

In the above embodiment, it is determined whether or not the copy sheet suitable for the image size determined by the document width and the magnification setting of the sheet document can be fed before feeding the document from the document feeding device. Although the case has been described, the present invention can be applied to a case where the original is not a sheet original but a continuous paper original as described later. [Seventh Embodiment] FIG. 26 is a block diagram for explaining the control arrangement of a CFF 400 in a copying machine showing a seventh embodiment of the present invention.

In the figure, 1601 is a CPU, and R
Processing is performed based on the program stored in the OM 1602. In the ROM 1602, in addition to programs, a data string necessary for controlling the copying apparatus and the LCD display 16 are provided.
The data of the screen displayed in 14 are stored. 160
A RAM 3 stores the status data of the copying machine.

Reference numeral 1604 is an I / O interface,
It is an interface between the CPU 1601 and various external sensors and input / output devices. 1615 is a CFF, which is an optical sensor 1
605 to 1608, and the signal from each sensor is CF
Since it varies depending on the width of the continuous paper document set in F1615, the document width data is transmitted to the CPU 1601 via the I / O interface 1604. Also,
The paper size varies depending on the position of the paper size cassette and the paper size regulating plate installed on the paper deck, that is, the variable resistor 1 for detecting the upper paper size.
609, a variable resistor 1610 for detecting the lower sheet size,
Data obtained by converting the resistance value of the variable resistor 1611 for detecting the deck paper size into a digital value by the A / D converter 1612 is sent to the CP via the I / O interface 1604.
The U1601 fetches and detects by referring to the data table stored in the ROM 1602. From the operation unit keyboard 1613, a magnification, a paper feed selection mode, a paper feed stage, and the like are selected. Information about copying operations such as number of sheets and paper feed mode, and warning about lack of suitable copy paper
1601 displays the I / O of the display screen stored in the ROM 1602 based on the state of the copying machine stored in the RAM 1603.
It is displayed by transferring it to the LCD display 1614 via the O interface 1604. Note that C
The continuous paper document width detection mechanism of the FF400 and its operation are the same as the operation of the CFF400 shown in FIG.

In the thus constructed third copying apparatus, the image magnification set by the magnification setting means (operation section keyboard 1613) and the document width detection means (optical sensor 1).
605 to 1608), the notification means (the CPU 1601 notifies the LCD display 1614) of the image formation based on the comparison result with the document width detected by the paper detection means and the detection result of the feedable paper size detected by the paper detection means. Since the possibility of feeding the recording medium of the optimum size is determined and notified before the start of image formation to the means (optical scanning system, photoconductor, other means used for image formation), an image formation start instruction accompanied by continuous paper document feeding In advance, it is possible to notify the possibility of feeding the recording medium of the optimum size.

Next, the continuous paper document width detection processing operation in the copying apparatus showing the seventh embodiment of the present invention will be described with reference to FIGS.

FIG. 27 is a flow chart showing an example of the idle processing routine in the copying machine showing the seventh embodiment of the present invention. Note that (1) to (4) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine enters an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation section (1), a key input processing routine shown in FIG. 28 described later is executed (2). Next, when there is a detection input from the optical sensors 1605 to 1608 provided in the CFF 1615 (3), the warning display processing routine shown in FIG. 29 is executed (4), and after the processing is completed, the procedure returns to step (1).

FIG. 28 is a flow chart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the seventh embodiment of the present invention. Note that (1) and (2) indicate each step.

First, the input data for the copy mode of the continuous paper original is analyzed (1), and the analyzed data is stored in the RAM.
The contents of the corresponding area of 1603 are updated (2).

FIG. 29 is a flow chart showing an example of detailed procedure of a warning display processing routine in the copying apparatus showing the seventh embodiment of the present invention. Note that (1) to (9) indicate each step.

First, the document width of a continuous paper document is determined from the input data from the sensors 1605 to 1608 (1). Next, the set magnification data stored in the RAM 1603 is read (2), and the paper most suitable for the value of the product of the document width and the magnification is selected (3). At this time, if the APS mode is selected (4), the paper size of the set cassette is searched (5), and if there is no similar cassette (6), there is no paper of the optimum paper series. To warn, the warning display 1 shown in FIG. 20A is displayed on the LCD display 1614 (7), and the process returns to the idle process.

On the other hand, if the APS mode is not set in step (4), it is judged whether the image size and the paper width of the selected cassette are the same (8). The warning display 2 shown in (b) of 20 is displayed on the LCD display 1614 (9),
Return to idle processing. [Eighth Embodiment] FIG. 30 is a block diagram for explaining the control arrangement of a CFF 400 in a copying machine showing an eighth embodiment of the present invention.

In the figure, 1701 is a CPU, and R
Processing is performed based on the program stored in the OM 1702. In the ROM 1702, in addition to programs, a data string necessary for controlling the copying apparatus and the LCD display 17 are provided.
The data of the screen to be displayed on 10 and the like are stored. 170
A RAM 3 stores the status data of the copying machine.

Reference numeral 1704 is an I / O interface,
It is an interface between the CPU 1701 and various external sensors and input / output devices. Reference numeral 1712 denotes a CFF tractor, which is a variable resistor 17 similar to the variable resistor 410 shown in FIG.
Since it is connected to No. 11, depending on the position of the tractor, A
The input voltage to the / D converter 1705 changes. The data converted by the A / D converter 1705 is sent as CP width data to the CP via the I / O interface 1704.
It is transmitted to U1701. Further, the sheet size changes according to the position of the sheet size regulation plate of the sheet cassette and the sheet deck. The variable resistor 1706 for detecting the upper sheet size is a variable resistor for detecting the upper sheet size, and the variable resistor 1707 for detecting the lower sheet.
The data obtained by converting the resistance value of the variable resistor 1708 for detecting the deck paper size into a digital value by the A / D converter 1705 is sent to the CP via the I / O interface 1704.
The U1701 fetches and detects by referring to the data table stored in the ROM 1702. From the operation unit keyboard 1709, a magnification, a paper feed selection mode, a paper feed stage, and the like are selected. Information about copying operations such as number of sheets and paper feed mode, and warning about lack of suitable copy paper
1701 displays the I / O of the display screen stored in the ROM 1702 based on the state of the copying machine stored in the RAM 1703.
It is displayed by being transferred to the LCD display 1710 via the O interface 1704.

As shown in FIG. 10, the upper cover 4
09 is opened, the computer original 401 is passed through, and the tractor 402 is manually moved according to the original width to set the computer original 401 on the tractor 402, and the resistance value of the variable resistor 410 connected to the tractor 402 is the original width. Change according to. The idle processing operation of the copying apparatus according to the eighth embodiment of the present invention will be described below with reference to the flowchart shown in FIG.

FIG. 31 is a flow chart showing an example of the idle processing procedure in the copying apparatus showing the eighth embodiment of the present invention. Note that (1) to (5) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the document table, the copying machine enters an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation section (1), if the magnification or the paper selection mode is changed at this time, the key input processing routine shown in FIG. 28 is executed (4). If the magnification or the paper selection mode has changed (5), the warning display processing routine shown in FIG. 29 is executed (3), and the process returns to step (1).

When the value of the variable resistor 1711 connected to the CFF tractor 1712 changes, that is, when the document width data changes (2), the warning display processing routine shown in FIG. 29 is performed. [Ninth Embodiment] FIG. 32 is a block diagram for explaining the CFF tractor control configuration of a copying machine showing a ninth embodiment of the present invention.

In the figure, reference numeral 1801 is a CPU, which is a ROM
Processing is performed according to the program stored in 1802.
The ROM 1802 stores not only programs but also data strings necessary for controlling the copying apparatus, screen data displayed on the LCD display 1810, and the like. 1803 is RA
At M, the status data of the copying machine and the like are stored. An I / O interface 1804 is an interface between the CPU 1801 and various external sensors and input / output devices. 1
Reference numeral 812 denotes a CFF tractor, which is connected to the variable resistor 1811. Therefore, the resistance value changes depending on the position of the tractor 1812, and the data converted by the A / D converter 1805 is I / O interface 1 as the document width data.
It is transmitted to the CPU 1801 via 804. Further, the sheet size changes according to the position of the sheet size regulation plate of the sheet cassette and the sheet deck. As a variable resistor, a variable resistor 1806 for detecting the upper sheet size, a variable resistor 1807 for detecting the lower sheet size, The resistance value of the variable resistor 1808 for detecting the deck paper size is converted into the A / D converter 18
The data converted into the digital value by 05 is taken in by the CPU 1801 via the I / O interface 1804, and is detected by referring to the data table stored in the ROM 1802. Operation unit keyboard 1809
From, the magnification, paper feed selection mode and paper feed tray selection are performed. The CPU 1801 issues RAM 1 information regarding copying operation information such as the number of sheets and paper feed mode and a warning that there is no suitable copy paper.
ROM 1 based on the state of copy paper stored in 803
The display screen stored in 802 is displayed on the I / O interface 1
Displayed by transferring to LCD display 1810 via 804. If the status changes due to key input or movement of the document size regulation plate 1812, the CP
U1801 sets an arbitrary time in the timer 1813, holds the current state while the timer 1813 is counting, and after the timer 1813 finishes counting, after confirming that the changed state is confirmed, the CPU 1801 outputs necessary screen data. R
Transfer from the OM 1802 to the LCD display 1810 via the I / O interface 1804. Below, FIG.
The idle processing operation of the copying apparatus according to the eighth embodiment of the present invention will be described with reference to the flowchart shown in FIG.

FIG. 33 is a flow chart showing an example of the idle processing procedure in the copying machine showing the eighth embodiment of the present invention. Note that (1) to (8) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 28 is executed (7). At this time, if there is a change in the magnification or the paper selection mode (8), or the tractor 1812 of the CFF.
If the width data from (2) changes, the timer 1813
When a constant count value is set in (3), a fixed time has elapsed (4), and the state of the RAM 1803 is not referred to again, that is, when the input data is confirmed, the warning display process shown in FIG. Do the routine.

FIG. 34 is a block diagram for explaining the control structure of the RDF in the copying machine showing the ninth embodiment of the present invention.

In the figure, optical sensors 2001 and 200
The input of 2, 2003 informs the state of the document placing table to the CPU 2005 via the I / O interface 2004.
When the optical sensor responds, the CPU 2005 compares the on / off state of the sensor with the document width size data stored in the ROM 2008 to detect the width of the placed document. In addition, the CPU 2005 displays the key press information on the operation unit 2006 at the I / O interface 2 at an arbitrary timing.
When the key is pressed and it is detected that the key is pressed, the data of the set copy mode is stored in the RAM 200.
9, and at the same time, appropriate display data corresponding to the key pressed on the LCD display 2007 is stored in the ROM 200.
8 and a RAM 2009, and outputs via the I / O interface 2004. The magnification can be set from the operation unit 2006 in the same manner, and the input can be made using the numeric keypad, the standard variable magnification key, the normal magnification key, the zoom key, etc. on the operation unit 2006. Further, the paper type or APS mode can be selected by the paper selection key on the operation unit 2006. CPU 20 when APS mode is selected
Reference numeral 05 calculates a new position from the input data of the document width and magnification, compares it with the current position stored in the RAM 2009, and when it is necessary to move the blank shutter 2011 from the current position to the new position, the CPU 2005
Sends a drive pulse to the stepping motor 2010 via the I / O interface 2004 to move the blank shutter 2011 to the target position.

In the thus constructed fourth copying machine, the image magnification set by the magnification setting means (operation section 2006) and the document width detecting means (optical sensors 2001 to 2) are set.
Based on the result of comparison with the document width detected by (003), the movement control means (CPU 2005) causes the latent image area regulating means (blank shutter 2011) to perform the image forming means (optical scanning system, photoconductor, other image forming). The sheet is moved to a predetermined position before the start of image formation with respect to the supplying means), and therefore the first print time after the image formation start instruction is issued when the sheet document is fed and the latent image area regulating means is moved to form the image. Can be significantly reduced.

Next, the configuration and operation of the blank exposure unit 4000 shown in FIG. 1 will be described with reference to FIG.

FIG. 35 is a perspective view of a principal portion showing the structure of blank exposure unit 4000 shown in FIG.

In the figure, reference numeral 4401 is a blank lamp substrate on which a plurality of tungsten lamps 44 are mounted.
02 is fixed. The light emitted from the tungsten lamp 4402 is projected only on the shaded portion on the photoconductor 4409. Reference numerals 4403 to 4405 visualize the optical paths of the light rays emitted from the tungsten lamp 4402. These rays are reflected by the reflection mirror 4406.
To face the photoconductor 4409. Ray 4403
It is blocked by the blank shutter 4408. The light beam 4404 is prevented from reaching the photoconductor 4409 by the blank shutter 4407.

On the other hand, the light beam 4405 reaches the photoconductor 4409. A blank drive motor 4411 is connected to a blank shutter 4407 that blocks light rays via a wire 4410.
Connected to and move in the direction of the arrow in the figure. The blank shutter 4408 is the slit 4 of the blank shutter 4407.
412 and claw 4413 are connected to each other, and claw 441
When 3 reaches the end of the slit 4412, the blank shutter 4408 moves in the arrow direction in the figure together with the blank shutter 4407.

The blank shutter drive control operation in the copying apparatus showing the ninth embodiment of the present invention will be described in detail below with reference to FIGS. 36 to 38.

FIG. 36 is a flow chart showing an example of the idle processing procedure in the copying apparatus showing the ninth embodiment of the present invention. Note that (1) to (5) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), a key input processing routine shown in FIG. 38 which will be described later is executed (5). Further, when the APS mode is selected (2), the document detection sensors 2001 to 2 of the RDF 200 are selected.
If there is a detection input from 003 (3), a blank shutter movement processing routine shown in FIG. 37, which will be described later, is executed (4), and the process returns to step (1).

On the other hand, if the APS mode is not selected and there is a keyboard input and the selected paper size changes, the blank shutter movement processing routine is executed. FIG. 37 is a flow chart showing the detailed procedure of the blank shutter movement processing routine in the copying apparatus showing the ninth embodiment of the present invention. Note that (1) to (5) indicate each step.

First, the width of the original is determined from the optical sensor input data (1). Next, the set magnification data stored in the RAM 2009 is read (2), the paper most suitable for the product value of the document width and the magnification is selected, and the blank shutter 201 is selected.
Calculate the new position of 1 (3). At this time, it is determined whether or not the current position of the blank shutter 2011 matches the new position (4). If YES, the process returns to the idle processing routine, and if NO, that is, the current position of the blank shutter 2011 and the new position. If the positions are different, the stepping motor 2010 is driven to drive the blank shutter 20.
11 is moved (5), and the process returns to the idle processing routine.

FIG. 38 is a flow chart showing the detailed procedure of the key input processing routine in the copying apparatus showing the ninth embodiment of the present invention. Note that (1) to (3) indicate each step.

First, the input data is analyzed (1) and the RAM
The contents of the area of 2009 are updated (2),
Change the display on the LCD display 2007 (3),
Return to idle processing. [Tenth Embodiment] FIG. 39 is a block diagram for explaining the RDF control configuration in a copying machine according to the tenth embodiment of the present invention. The configuration and operation will be described below.

The voltage which changes according to the resistance value of the variable resistor 2110 connected to the document size regulating plate 2111 of the automatic document feeder shown in FIG. 22 is converted into digital data by the A / D converter 2109 and I / D. O interface 2
Notify the CPU 2103 via 112. CPU21
03 monitors the data from the A / D converter 2109,
The width of the placed document is detected by referring to the comparison table between the digital data stored in the OM 2101 and the document width size data. Further, the CPU 2103 takes in key press information on the operation unit 2104 via the I / O interface 2112 at an arbitrary timing, and when detecting that a key is pressed, the data of the set copy mode is stored in the RAM 2.
102, and at the same time, appropriate display data corresponding to the key pressed on the LCD display 2105 is stored in the ROM 2
Output via 101. Similarly, the magnification can be set from the operation unit 2104, and the numeric keypad 6 on the operation unit 2104 can be used.
03, standard variable magnification keys 608, 609, normal magnification key 610,
Input from the zoom key 617. Further, a paper type or APS mode can be selected by the paper selection key 607. CP when APS mode is selected
The U2103 calculates a new position from the input data of the detected document width and magnification, compares it with the current position stored in the RAM 2102, and when it is necessary to move the blank shutter 2108 from the current position to the new position, the CPU2
103 sends a control signal to the motor drive control circuit 2106 via the I / O interface 2112, for example DC
A blank shutter 2108 is moved to a target position by a motor 2107 composed of a motor, and the reached position is stored in the RAM 2102.

As described above, in the above embodiment, the case where the document width of the sheet document is detected based on the sensor input has been described. However, as shown in FIG. 22, the document table 220-1 is used.
Place the original on top of it and adjust the original width to match the original width.
When 1-1 is moved manually, the document width regulating plate 221-1
A case in which the present invention is applied to a copying apparatus to which an RDF 200 in which the resistance value of a variable resistor 222-1 connected to the RDF 200 changes according to the document width can be applied will be described below with reference to the flowchart shown in FIG. An idle processing operation in the copying machine showing the tenth embodiment of the invention will be described.

FIG. 40 is a flow chart for explaining the detailed procedure of the idle processing routine in the copying machine showing the tenth embodiment of the present invention. Note that (1) to (6) indicate each step.

Each processing is based on the premise that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a state change of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 38 is executed (5). At this time, if the magnification or the paper selection mode is changed (6), the blank shutter movement processing routine shown in FIG. 37 is executed (4). Also, RDF2
When the width data from the document width regulation plate 2111 of 00 has changed (3), the blank shutter movement processing routine shown in FIG. 37 is similarly executed.

On the other hand, if the APS mode has not been selected (2) and the paper size has been determined, and the selected paper size has changed, that is, step (2)
If NO in step S1 and YES in step (1), the process advances to step (4) to similarly execute the blank shutter movement processing routine shown in FIG.

In the above embodiment, the case where the drive control of the blank shutter 2108 is performed by controlling the drive of the DC motor 2107 for moving the blank shutter 2108 has been described. However, as will be described later, the stepping motor is a blank shutter. The present invention can be applied to a copying machine that moves 2108. The case will be described below. [Eleventh Embodiment] FIG. 41 is a block diagram for explaining the control configuration of the RDF of the copying machine showing the eleventh embodiment of the present invention.

In the figure, the voltage which changes according to the resistance value of the variable resistor 2206 connected to the original size regulating plate 2207 of the automatic document feeder is converted into digital data by the A / D converter 2205 and the I / O interface. 22
Notify CPU 2200 via 04. CPU 220
0 monitors the data from the A / D converter 2205, and RO
The width of the placed document is detected by referring to the comparison table between the digital data stored in M2202 and the document width size data. Further, the CPU 2200 sends the press information on the operation unit 2209 to the I / O interface 220 at an arbitrary timing.
4 and detects that the key is pressed, the data of the set copy mode is stored in the RAM 2201 and the appropriate display data corresponding to the pressed key is composed from the ROM 2202 and the RAM 2201 and I Output to the LCD display 2208 via the / O interface 2204. The magnification can be set from the operation unit 2209 in the same manner. Ten keys 603 on the operation unit 2209, standard variable magnification keys 608, 609, and equal magnification key 61.
0, input from the zoom key 617. Further, a paper type or APS mode can be selected by the paper selection key 607. Key input and original size control plate 22
The state is changed by the movement of 07 and the blank shutter 2
When it is necessary to move the 211 from the current position to the new position, the CPU 2200 sets an arbitrary time in the timer 2212, holds the current state while the timer 2212 is counting, and then calculates the moving position again. , The drive signal is sent to the stepping motor 2210 via the I / O interface 2204, and the blank shutter 2211
Is moved to the target position, and the reached position is stored in the RAM 220.
Store in 1.

The idle processing operation of the copying machine according to the eleventh embodiment of the present invention will be described below with reference to the flow chart shown in FIG.

FIG. 42 is a flow chart showing an example of the idle processing procedure in the copying apparatus showing the eleventh embodiment of the present invention. Note that (1) to (9) indicate each step.

Each processing is premised on that the copying apparatus is not in the copying operation, and when the copy start key 605 is pressed, another copying sequence is started.

When there is no key input and nothing is placed on the platen, the copying machine is in an idle state waiting for a state change of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 38 is executed (8). At this time, if there is a change in the magnification or the paper selection mode (9), or if the width data from the document regulating plate 2207 of the RDF 200 changes (3), a constant count value is set in the timer 2212 (4), After the elapse of a certain time (5), when the state of the RAM 2201 is changed again with reference to the content of the RAM 2201 (6), the blank shutter movement processing routine shown in FIG. 37 is executed (7), and the process returns to step (1).

In the above embodiment, the case of detecting the document width of the sheet document and executing the blank shutter movement process before the start of the copy sequence has been described. However, as will be described later, it is a continuous sheet fed to the CFF 400 as a document. However, the present invention can be applied. The case will be described below. [Twelfth Embodiment] FIG. 43 is a block diagram for explaining the control configuration of the CFF of the copying apparatus showing the twelfth embodiment of the present invention. The same parts as those in FIG. The configuration and operation will be described below.

The inputs of the optical sensor 1000, the optical sensor 1001, the optical sensor 1002, and the optical sensor 1003 notify the CPU 1005 of the state of the document paper width of the CFF 400 via the I / O interface 1004. When the optical sensor responds, the CPU 1005 detects the width of the placed document by comparing the on / off state of the sensor with the document width size data stored in the ROM 1008. Also, CPU
1005 takes in key press information on the operation unit 1006 via the I / O interface 1004 at an arbitrary timing, and when it detects that the key is pressed, it stores the data of the set copy mode in the RAM 1009 and at the same time. Appropriate display data corresponding to the key pressed on the LCD 1007 is composed of the ROM 1008 and the RAM 1009, and is output via the I / O interface 1004.

In the fifth copying apparatus constructed as described above, the image magnification set by the magnification setting means (operation unit 1006) and the document width detection means (optical sensors 1000 to 1).
Since the movement control means (CPU 1005) moves the latent image area regulating means (blank shutter 1011S) to a predetermined position before starting image formation on the image forming means based on the result of comparison with the document width detected by (003). ,
It is possible to greatly reduce the first print time after the image formation start instruction when the continuous paper document is fed and the latent image area regulating means is moved to form an image.

Similarly, the magnification can be set from the operation unit 1006, and the input is made from the ten keys, the fixed variable magnification key, the same size key, the zoom key, etc. on the operation unit 1006. further,
The paper type or APS mode can be selected by the paper selection key. If APS mode is selected,
The CPU 1005 calculates a new position from the input data of the continuous paper document width and the magnification, compares it with the current position stored in the RAM 1009, and then the blank shutter 101.
When 1S needs to be moved from the current position to a new position, the CPU 1005 sends a drive pulse to the stepping motor 1011 via the I / O 1004 to move the blank shutter 1011S to the target position.

The continuous paper copying processing operation in the copying apparatus according to the present invention will be described below with reference to FIGS. It should be noted that each procedure is executed on the assumption that the copying apparatus is not in the copying operation. When the copy start key 605 is pressed, another copy sequence (not shown) is started.

FIG. 44 is a flow chart showing an example of the idle processing procedure in the copying apparatus showing the twelfth embodiment of the present invention. Note that (1) to (5) indicate each step.

When there is no key input and nothing is placed on the platen, the copying apparatus main body enters an idle state in which it waits for the state of the sensor and the key input, and first, it is checked whether or not the key input is made. If it is determined (1) and if YES, a key input processing routine shown in FIG. 46, which will be described later, is executed (2), and after the processing is completed, the procedure returns to step (1).

On the other hand, if the judgment in step (1) is NO, it is judged whether the APS mode is being set (3). If NO, the process returns to step (1). It is determined whether or not the document width is detected (4). If NO, the process returns to step (1). If YES, a blank shutter moving process routine shown in FIG. 45 described later is executed (5), and the step after the process is completed. Return to (1).

FIG. 45 is a flow chart showing an example of the detailed procedure of the blank shutter movement processing routine in the copying apparatus showing the twelfth embodiment of the present invention. Note that (1)
~ (5) shows each step.

The width of the continuous paper original is discriminated based on the optical sensor input data of the optical sensor units 410 to 413 shown in FIG. 4 (1). Next, the set magnification data stored in the RAM 1009 is read (2), the paper most suitable for the product value of the continuous paper document width and the magnification is selected, and the new position of the blank shutter 1011S is calculated (3), and the current value is calculated. It is determined whether the position where the blank shutter 1011 is arranged and the newly calculated position match (4), and YE
If S, the process returns to the idle process, and if NO, the motor drive circuit 1106 outputs predetermined pulse data to the stepping motor 1010, moves the blank shutter 1011S to the designated position (5), and returns to the idle process.

FIG. 46 is a flow chart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the twelfth embodiment of the present invention. Note that (1) to (3) indicate each step.

When a key input is detected in step (1) shown in FIG. 44, the key input data is analyzed (1),
While updating the area of the RAM 1009 (2),
The display on the LCD display 701 (corresponding to the LCD display 1007 shown in FIG. 43) is updated (3),
Then, the process returns to idle processing.

On the other hand, if the APS mode has not been selected, there is a key input, and when there is a change in the selected paper size, the regulation plate movement processing routine is executed. [Thirteenth Embodiment] FIG. 47 is a block diagram for explaining the control arrangement of the CFF in the copying machine showing the thirteenth embodiment of the present invention. The configuration and operation will be described below.

The voltage that changes according to the resistance value of the variable resistor 1110 connected to the tractor of the CFF 400 shown in FIG. 1 is converted into digital data by the A / D converter 1109, and is sent to the CPU 1 via the I / O interface 1100.
103 is notified. CPU 1103 is an A / D converter 1
The data from 109 is monitored, and the width of the placed document is detected by referring to the comparison table between the digital data stored in the ROM 1101 and the document width size data. Also, CPU
1103 takes in key press information on the operation unit 1104 via the I / O interface 1100 at an arbitrary timing, and when it detects that the key is pressed, it stores the data of the set copy mode in the RAM 1102, and at the same time. Appropriate display data corresponding to the key pressed on the LCD display 1105 is stored in the ROM 1101 and the RAM 1.
102, and outputs via the I / O interface 1100.

Similarly, the magnification can be set from the operation unit 1104. The ten-key pad 603 on the operation unit and the fixed-size variable key 6 are provided.
08, 609, the same size key 610, and the zoom key 617. Further, a paper type or APS mode can be selected by the paper selection key 607. When the APS mode is selected, the CPU 1103 calculates a new position from the input data of the detected document width and magnification, and R
When it is necessary to move the blank shutter 1108S from the current position to a new position as compared with the current position stored in the AM 1102, the CPU 1103 causes the motor drive control circuit 110 via the I / O interface 1100.
6, a control signal is sent to 6, the blank shutter 1108S is moved to the target position by the motor 1107, and the reached position is stored in the RAM 1102.

The idle processing operation in the copying apparatus showing the thirteenth embodiment of the present invention will be described below with reference to the flow chart shown in FIG.

FIG. 48 is a flow chart showing an example of the idle processing procedure in the copying machine showing the thirteenth embodiment of the present invention. Note that (1) to (6) indicate each step.

When the copy start key 605 is pressed, another copy sequence (not shown) is activated. When there is no key input and nothing is placed on the platen, the copying machine is in an idle state, which waits for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit (1), the key input processing routine shown in FIG. 46 is executed (5), and when there is a change in the magnification or the paper selection mode (6 ), The blank shutter movement processing routine shown in FIG. 45 is performed (4). Further, when the width data from the tractor 402 of the CFF 400 changes (3), FIG.
The blank shatter movement processing routine shown in 5 is performed (4).

On the other hand, when the APS mode is not selected (2) and the paper size is decided and the selected paper size is changed, the blank shutter movement processing routine shown in FIG. 45 is executed. (4). [Fourteenth Embodiment] FIG. 49 is a block diagram for explaining the control arrangement of a CFF in a copying machine showing a fourteenth embodiment of the present invention. The configuration and operation will be described below.

The voltage that changes according to the resistance value of the variable resistor 1206 connected to the tractor 1207 of the CFF 400 is converted into digital data by the A / D converter 1205, and is transferred to the CPU 12 via the I / O interface 1204.
Let 00 know. The CPU 1200 is the A / D converter 120
The data from No. 5 is monitored, and the width of the placed document is detected by referring to the comparison table of the digital data stored in the ROM 1202 and the document width size data. In addition, the CPU 12
00 receives the key press information on the operation unit 1209 at an arbitrary timing via the I / O interface 1204, and when it detects that the key has been pressed, it stores the data of the set copy mode in the RAM 1201 and presses it at the same time. Appropriate display data corresponding to the key
2 and the RAM 1201 and outputs to the LCD display 1208 via the I / O interface 1204. The magnification can be set from the operation unit 1209 in the same manner.
Input from 7,618. Furthermore, the paper selection key 60
7, it is possible to select the paper type or the APS mode.

When the state is changed by the key input and the movement of the tractor 1207 and it is necessary to move the blank shutter 1211S from the current position to the new position,
The CPU 1200 sets an arbitrary time in the timer 1203, holds the current state while the timer 1203 is counting, calculates the moving position again after that, and outputs the drive signal as I
The blank shutter 1211S is moved to the target position by sending it to the stepping motor 1210 via the / O interface 1204, and the reached position is stored in the RAM 1201.

Next, the idle processing operation in the copying machine showing the 14th embodiment of the present invention will be explained with reference to the flow chart shown in FIG.

FIG. 50 is a flow chart showing an example of the idle processing procedure in the copying machine showing the 14th embodiment of the present invention. Note that (1) to (9) indicate each step.

When the copy start key 605 is pressed, another copy sequence (not shown) is activated. When there is no key input and nothing is placed on the platen, the copying machine is in an idle state, which waits for a change in state of the sensor and key input.

At this time, when a key input is detected from the operation unit 1209 (1), the key input processing routine shown in FIG. 48 is executed (8), and at this time, the magnification or the paper selection mode is changed. (9), or when the width data from the tractor 1207 of the CFF 400 has changed (3), a constant count value is set in the timer 1203 (4). Then, after a certain period of time (5), the RAM1
Referring to the contents of 201, if the storage state has changed (6), the blank shutter movement processing routine shown in FIG. 45 is executed (7), and the process returns to step (1).

On the other hand, when the APS mode is not selected (2) and the paper size is decided and the selected paper size is changed, a constant count value is set in the timer 1203 (4). .

In each of the above embodiments, RDF2
00 or the width of the original set in the CFF 400, even if the width of the original changes, the original width may return to the state before the change even after the predetermined time elapses. 13, FIG. 25, FIG. 33, FIG. 42, and FIG. 50), the change state of the document width is determined again and the unnecessary paper width regulation plate is controlled so as not to move as much as possible. You can expect an improvement in time.

[0200]

As described above, according to the first copying apparatus of the present invention, based on the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means. Since the movement control means moves the regulating means to a predetermined position before starting image formation, the first print time when the regulating means is moved to form an image can be greatly shortened.

According to the second copying apparatus, the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means, and the feedable size detected by the size detecting means. Since the notifying unit determines and notifies the possibility of feeding the recording medium of the optimum size before the start of image formation for the image forming unit based on the detection result,
It is possible to notify the possibility of feeding the recording medium of the optimum size before instructing to start the image formation accompanied by feeding the sheet original.

According to the third copying apparatus, the result of comparison between the image magnification set by the magnification setting means and the document width detected by the document width detecting means, and the feedable size detected by the size detecting means. Since the notifying means determines and notifies the possibility of feeding the recording medium of the optimum size based on the detection result before the image formation is started, the recording medium of the optimum size is recorded before the image formation start instruction accompanied with the continuous paper document feeding. The possibility of feeding can be notified.

According to the fourth copying apparatus, the movement control means controls the latent image area regulating means based on the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detecting means. Since the sheet is moved to a predetermined position before the image formation is started, it is possible to greatly reduce the first print time when the sheet original is fed and the latent image area regulating unit is moved to form the image.

According to the fifth copying apparatus, the movement control means controls the latent image area regulation means based on the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detection means. Is moved to a predetermined position before the start of image formation, the first print time can be greatly shortened when the continuous paper document is fed and the latent image area regulating means is moved to form an image. .

Therefore, the first print time can be markedly shortened when the original is fed and the image is formed with the regulation of the recording medium or the erasure of the latent image, and the feeding of the recording medium of the inconsistent size is performed. And so on can be surely prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating the configuration of a copying apparatus showing a first embodiment of the present invention.

FIG. 2 is a plan view showing an example of an operation panel provided in the main body shown in FIG.

FIG. 3 is a block diagram illustrating a control configuration of the CFF shown in FIG. 1 and a main body.

FIG. 4 is a perspective view for explaining a paper width detection operation of the CFF shown in FIG.

5 is a plan view of relevant parts for explaining the configuration of the intermediate tray shown in FIG. 1. FIG.

FIG. 6 is a flowchart showing an example of an idle state processing procedure in the copying apparatus according to the present invention.

FIG. 7 is a flowchart showing an example of a detailed procedure of a paper width regulation plate movement processing routine in the copying apparatus according to the present invention.

FIG. 8 is a flowchart showing an example of a detailed procedure of a key input processing routine in the copying apparatus according to the present invention.

FIG. 9 is a diagram showing a C in the copying apparatus showing the second embodiment of the present invention.
It is a block diagram explaining the control structure of FF.

10 is a perspective view of a main part for explaining a paper width detection mechanism using the variable resistor shown in FIG.

FIG. 11 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the second embodiment of the present invention.

FIG. 12 is a block diagram illustrating a control configuration of a CFF in a copying apparatus showing a third embodiment of the present invention.

FIG. 13 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the third embodiment of the present invention.

FIG. 14 is a block diagram illustrating an RDF control configuration in a copying apparatus according to a fourth embodiment of the present invention.

FIG. 15 is a perspective view showing an external configuration of the RDF shown in FIG.

16 is a plan view showing an external configuration of the RDF shown in FIG. 1. FIG.

FIG. 17 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the fourth embodiment of the present invention.

FIG. 18 is a flowchart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the fourth embodiment of the present invention.

FIG. 19 is a flowchart showing an example of detailed procedures of a warning display processing routine in the copying apparatus showing the fourth embodiment of the present invention.

FIG. 20 is a plan view showing an example of a warning notification screen according to the present invention.

FIG. 21 is a block diagram illustrating a control configuration of RDF in a copying apparatus showing a fifth embodiment of the present invention.

22 is a plan view of relevant parts for explaining the configuration of the document size regulating plate shown in FIG. 21. FIG.

FIG. 23 is a flow chart showing an example of an idle processing procedure in the copying apparatus showing the fifth embodiment of the invention.

FIG. 24 is a block diagram illustrating an RDF control configuration in a copying apparatus according to a sixth embodiment of the present invention.

FIG. 25 is a flowchart showing an example of an idle processing routine in the copying apparatus showing the sixth embodiment of the present invention.

FIG. 26 is a block diagram illustrating a control configuration of a CFF in a copying machine showing a seventh embodiment of the present invention.

FIG. 27 is a flowchart showing an example of an idle processing routine in the copying apparatus showing the seventh embodiment of the present invention.

FIG. 28 is a flowchart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the seventh embodiment of the present invention.

FIG. 29 is a flowchart showing an example of a detailed procedure of a warning display processing routine in the copying apparatus showing the seventh embodiment of the present invention.

FIG. 30 is a block diagram illustrating a CFF control configuration in a copying apparatus according to an eighth embodiment of the present invention.

FIG. 31 is a flow chart showing an example of an idle processing procedure in the copying apparatus showing the eighth embodiment of the present invention.

FIG. 32 is a CFF of a copying machine showing a ninth embodiment of the present invention.
It is a block diagram explaining a tractor control structure.

FIG. 33 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the eighth embodiment of the present invention.

FIG. 34 is a block diagram illustrating a control configuration of RDF in the copying apparatus showing the ninth embodiment of the present invention.

FIG. 35 is a perspective view of a principal portion showing the configuration of the blank exposure unit shown in FIG. 1.

FIG. 36 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the ninth embodiment of the present invention.

FIG. 37 is a flow chart showing detailed steps of a blank shutter movement processing routine in the copying apparatus showing the ninth embodiment of the present invention.

FIG. 38 is a flow chart showing detailed steps of a key input processing routine in the copying apparatus showing the ninth embodiment of the present invention.

FIG. 39 is a block diagram illustrating a control configuration of RDF in the copying apparatus showing the tenth embodiment of the present invention.

FIG. 40 is a flow chart illustrating a detailed procedure of an idle processing routine in the copying apparatus showing the tenth embodiment of the present invention.

FIG. 41 is an RD of a copying machine showing an eleventh embodiment of the present invention.
It is a block diagram explaining the control structure of F.

FIG. 42 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the eleventh embodiment of the present invention.

FIG. 43 is a CF of a copying machine showing the twelfth embodiment of the present invention.
It is a block diagram explaining the control structure of F.

FIG. 44 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the twelfth embodiment of the present invention.

FIG. 45 is a flowchart showing an example of detailed procedures of a blank shutter movement processing routine in the copying apparatus showing the twelfth embodiment of the present invention.

FIG. 46 is a flowchart showing an example of a detailed procedure of a key input processing routine in the copying apparatus showing the twelfth embodiment of the present invention.

FIG. 47 is a block diagram illustrating a control configuration of a CFF in a copying machine showing a thirteenth embodiment of the present invention.

FIG. 48 is a flow chart showing an example of an idle processing procedure in the copying apparatus showing the thirteenth embodiment of the present invention.

FIG. 49 is a block diagram illustrating a control configuration of a CFF in a copying machine showing a fourteenth embodiment of the present invention.

FIG. 50 is a flowchart showing an example of an idle processing procedure in the copying apparatus showing the 14th embodiment of the present invention.

[Explanation of reference numerals] 1000 optical sensor 1001 optical sensor 1002 optical sensor 1003 optical sensor 1005 CPU 1006 operation unit 1011 paper width regulation plate

Claims (5)

[Claims] 1. A document feeding unit for feeding a continuous document sheet to a document reading start position, an image forming unit, a feeding unit for feeding a recording medium to the image forming unit, and a feeding unit for feeding the recording medium. An intermediate placing means for temporarily placing the recording medium on which the image is formed by the image forming means, and an intermediate feeding for feeding the recording medium placed on the intermediate placing means to the image forming means again. And a placement position of a recording medium placed on the intermediate placement unit, the document width detection unit detecting a document width of the continuous paper document fed by the document feeding unit. Restricting means for moving and restricting in a direction orthogonal to the recording medium conveyance direction, magnification setting means for setting the magnification of the image formed by the image forming means, image magnification set by the magnification setting means, and the document width Detected by the detection means And a movement control means for moving the regulating means to a predetermined position before the start of image formation based on the result of comparison with the document width. 2. A document feeding unit for feeding a sheet document to a document reading start position, an image forming unit, a feeding unit for feeding a recording medium to the image forming unit, and a size of the recording medium to be fed. In a copying apparatus having size detecting means for detecting, a document width detecting means for detecting a document width of a continuous paper document fed by the document feeding means and a magnification of an image formed by the image forming means are set. Based on the magnification setting means, the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detection means, and the feedable size detection result detected by the size detection means. A copying apparatus comprising: a notification unit that determines and notifies the possibility of feeding a recording medium of an optimum size before starting image formation. 3. A document feeding unit for feeding a continuous paper document to a document reading start position, an image forming unit, a feeding unit for feeding a recording medium to the image forming unit, and a size of the recording medium to be fed. In a copying machine having a size detecting means for detecting the sheet width, a document width detecting means for detecting a document width of a continuous sheet document fed by the document feeding means, and a magnification of an image formed by the image forming means are set. Based on the comparison result of the image magnification set by the magnification setting means and the document width detected by the document width detection means, and the feedable size detection result detected by the size detection means. And a notification unit that determines and notifies the possibility of feeding the recording medium of the optimum size before starting image formation. 4. A document feeding unit that conveys a sheet document to a document reading start position, an optical scanning system that exposes a photoconductor to form a document image fed by the document feeding unit, and the photoconductor. In a copying apparatus having an erasing means for erasing a latent image of a body, a document width detecting means for detecting a document width of a sheet document fed by the document feeding means and a latent image area to be erased by the erasing means are provided. A latent image area regulation unit that moves and regulates the recording medium in a direction orthogonal to the recording medium conveyance direction, a magnification setting unit that sets a magnification of an image formed by the image forming unit, and an image magnification set by the magnification setting unit. A copying apparatus comprising: a movement control unit that moves the latent image area regulating unit to a predetermined position before starting image formation based on a comparison result with the document width detected by the document width detecting unit. 5. A document feeding unit for feeding a continuous sheet document to a document reading start position, an optical scanning system for exposing a photoconductor to form a document image fed by the document feeding unit, and In a copying machine having an erasing means for erasing a latent image on a photoconductor, a document width detecting means for detecting a document width of a continuous paper document fed by the document feeding means, and a latent image for erasing by the erasing means. A latent image area regulating unit that regulates the area by moving in a direction orthogonal to the recording medium conveyance direction, a magnification setting unit that sets the magnification of the image formed by the image forming unit, and an image set by the magnification setting unit. Copying comprising: a movement control means for moving the latent image area regulating means to a predetermined position before the start of image formation based on a comparison result between the magnification and the document width detected by the document width detecting means. apparatus.