JPH0862907A - Image forming device and original frame erasure processing method therefor - Google Patents

Abstract

PURPOSE: To efficiently start original frame erasing image-forming by setting an effective original frame erasing size which does not cause paper waste before feeding a continuous paper original or a normal original. CONSTITUTION: When a CPU 30 or the CPU 50 decides plural original frame erasing size candidates in accordance with an original width detected by variable resistors 38A and 38B, plural original frame size candidates decided are displayed on a message display, and when a desired original frame erasing size is selected and instructed out of the plural original frame erasing size candidates displayed by an arrow key or an OK key, the device 10 controls the frame erasure of a blank exposure unit so that the CPU 10 performs the frame erasure of an image range in accordance with the original frame erasing size instructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine or a laser printer, and more particularly to an image forming apparatus to which a continuous paper original feeding apparatus can be connected and an original frame erasing method for the image forming apparatus. It is about.

[0002]

2. Description of the Related Art Conventionally, an image forming apparatus in which a document feeding device (RDF) that automatically feeds a set of documents set on a tray from the last page to an exposure position is combined with a copying machine. Alternatively, an image forming apparatus is known which is combined with a continuous paper original feeding device which automatically feeds continuous paper originals such as computer originals while exposing them one by one.

There is also known a document frame erasing function (driving an eraser device) of inputting a document frame erasing size and deleting unnecessary portions of an image in accordance with the inputted document size.

In such an apparatus, when performing image formation for erasing a document frame using the continuous paper document feeder (CFF) or the document feeder (RDF), the input of the document frame erase size is the actual document size. Regardless, all size inputs were treated as valid.

Further, when performing image formation for erasing a document frame using a continuous paper document feeder or a document feeder (RDF), the input document frame erase size is compared with the actual document size. Controls such as warning and prohibition were not executed.

[0006]

In this case, if the original frame erase size is larger than the actual original size, the frame is not erased on the size of the output transfer paper, and there is a problem that a sheet is eventually lost. It was

Further, the CFF in which the document width size cannot be detected
If the original is not drawn, the original size used is unknown, so the original size detected by the continuous paper original feeder after the original is drawn in and the original input by the original frame eraser size input means A method of comparing the border-erasing sizes, warning and detecting is also considered.

In this case, since the warning is issued after the original is pulled in and before the image forming operation is started, there is a possibility that the original may be damaged when it is fed, paper may be jammed, or the original may be damaged. However, as a result, there is a problem that the overall productivity is significantly reduced.

The present invention has been made to solve the above-mentioned problems, and an object of the first to thirteenth inventions of the present invention is to provide an original width of an automatically fed continuous paper original or a normal original. Is detected and the continuous document that is automatically fed before the start of image formation, or the valid document border erase size is determined and displayed before the normal document is fed, or the input document border erase size is changed. The image forming apparatus and the original of the image forming apparatus capable of efficiently starting the image deletion of the document frame by setting the effective document frame erasing size that does not waste the paper before feeding the continuous paper document or the normal document by displaying The purpose is to provide a frame erasing processing method.

[0010]

SUMMARY OF THE INVENTION A first invention according to the present invention is to detect an original feeding means for feeding an original to a predetermined position, and an original width of the original fed by the automatic feeding means. Detecting means, a document frame erasing means for erasing the image area according to the document size, a determining means for determining a plurality of document frame erasing size candidates according to the document width detected by the detecting means, and this determination. Display means for displaying the plurality of document frame eraser size candidates determined by the means; instruction means for selecting and instructing a desired document frame eraser size from the plurality of document frame eraser size candidates displayed on the display means; And a control unit for controlling the frame erasing of the document frame erasing unit so as to erase the image area according to the document frame erasing size designated by the designating unit.

According to a second aspect of the present invention, the determining means is
The configuration is such that a document frame erase size candidate is determined before the image forming operation is started.

In a third invention according to the present invention, the determining means is
The document frame erasing size candidate is determined when the document width detected by the detection means changes.

According to a fourth aspect of the present invention, the determining means is
The document frame erasing size candidate is determined after a lapse of a predetermined time after the document width detected by the detecting means is changed.

According to a fifth aspect of the present invention, automatic feeding means for feeding an original to a predetermined position, detection means for detecting the original width of the original fed by the automatic feeding means, and original A document frame erasing means for erasing the image area according to the size, an input means for inputting a document frame erasing size of the document frame erasing means, a document width detected by the detecting means and the input by the input means Comparison means for comparing and judging the size of the document frame according to the document frame erase size, and the change of the document frame erase size input before the start of document feeding by the automatic feeding means according to the comparison result of the comparing means And a warning means for warning the display means.

According to a sixth aspect of the present invention, in the case where the comparing means determines that the document width corresponding to the document frame erase size inputted by the input means is larger than the document width detected by the detecting means. The warning means is configured to warn the display means to that effect.

According to a seventh aspect of the present invention, when the comparing means determines that the document width corresponding to the document frame erase size input by the input means is smaller than the document width detected by the detecting means. The warning means is configured to warn the display means to that effect.

According to an eighth aspect of the present invention, the comparison means is
Before the start of the image forming operation, the document width detected by the detection unit and the document width corresponding to the document frame erase size input by the input unit are compared and judged.

In a ninth aspect of the present invention, the comparison means is
When the document width detected by the detection unit changes, the document width detected by the detection unit and the document width corresponding to the document frame erase size input by the input unit are compared and judged. Is.

In a tenth aspect of the present invention, the comparing means inputs the document width detected by the detecting means and the input means after a lapse of a predetermined time after the document width detected by the detecting means changes. It is configured so as to compare and determine the size with the document width according to the document frame erase size.

In an eleventh aspect of the present invention, the automatic feeding means feeds a continuous paper document to a predetermined position.

A twelfth aspect of the present invention is an automatic feeding means for feeding an original to a predetermined position, and a detecting means for detecting the original width of the paper original fed by the automatic feeding means, In a document frame erasing processing method of an image forming apparatus having a document frame erasing unit for erasing an image area according to a document size, a plurality of document frame erasing size candidates are determined according to a document width detected by the detecting unit. Determining step, a display step of displaying the determined plurality of document frame eraser size candidates on the display means, and an instruction to instruct selection of a desired document frame eraser size from the displayed plurality of document frame eraser size candidates. And a process.

A thirteenth aspect of the present invention is an automatic feeding means for feeding an original to a predetermined position, and a detecting means for detecting the original width of the paper original fed by the automatic feeding means, In a document frame erasing processing method of an image forming apparatus having a document frame erasing unit for erasing an image area according to a document size, an input step of inputting a document frame erasing size of the document frame erasing unit and the detecting unit A comparison step of comparing and determining the detected document width and the document width corresponding to the document frame erase size input in the input step, and before starting the document feeding by the automatic feeding unit according to the comparison result. And a warning step for warning the display means of a change in the size of the erased document frame input to the display means.

[0023]

According to the first aspect of the invention, when the determining means determines a plurality of document frame eraser size candidates according to the document width detected by the detecting means, the determined plurality of document frame eraser size candidates are displayed on the display means. When the desired document frame erasing size is displayed and selected from the displayed plurality of document frame erasing size candidates by the instructing means, the control means erases the image area in accordance with the instructed original frame erasing size. By controlling the frame erasing of the document frame erasing means to avoid selecting the document frame erasing size whose selected document frame erasing size is larger than the document size, the document frame erasing size effective for the fed document It is possible to perform processing.

According to the second aspect of the invention, the determining means can determine the document frame eraser size candidate before starting the image forming operation, and determine the document frame eraser size effective for the document width before the document is fed. To do.

According to a third aspect of the invention, the deciding means decides a document frame erasing size candidate when the document width detected by the detecting means changes, and catches the time when the document width changes to effectively erase the document frame. It is possible to determine a size candidate.

According to a fourth aspect of the invention, the deciding means decides a document frame erasing size candidate after a predetermined time has elapsed since the document width detected by the detecting means was changed, and after the document width has changed, the document is surely written. It is possible to determine a valid document frame erasing size candidate by capturing the time when the width is fixed.

According to a fifth aspect of the invention, when the document frame erasing size of the document frame erasing unit is input by the input unit, the document width detected by the detecting unit by the comparing unit and the document frame erasing size input by the input unit. According to the comparison result, the warning means warns the display means of the change of the document frame erase size inputted before the continuous feeding of the continuous image paper original by the automatic feeding means. Then, it is possible to clearly indicate to the user that an invalid document frame erasing size has been input.

According to a sixth aspect of the present invention, when the comparison means determines that the document width corresponding to the document frame erase size input by the input means is larger than the document width detected by the detection means, the warning means is provided. It is possible to warn the display means to that effect and to clearly indicate that an invalid document frame erase size input has been made which causes a document loss according to the input document frame erase size.

According to a seventh aspect of the invention, when the comparing means determines that the document width corresponding to the document frame erase size input by the input means is smaller than the document width detected by the detecting means, the warning means is provided. It is possible to warn the display means to that effect and to clearly indicate that the original document frame eraser size input is meaningless according to the input document frame eraser size.

According to an eighth aspect of the present invention, the comparing means compares the document width detected by the detecting means before the start of the image forming operation with the document width corresponding to the document frame erase size input by the input means. Thus, it is possible to determine whether or not an appropriate document frame eraser size has been input before image formation and warn that an invalid document frame eraser size has been input.

According to a ninth aspect of the present invention, the comparing means has an original width detected by the detecting means when the original width detected by the detecting means changes and an original width corresponding to the original frame erase size input by the input means. Is compared to determine whether the document width has changed, and whether or not a proper document frame erase size has been input is determined to warn that an invalid document frame erase size input has been made. It is possible.

According to a tenth aspect of the invention, the comparing means sets the original width detected by the detecting means and the original frame erasing size input by the input means after a lapse of a predetermined time from the change of the original width detected by the detecting means. Depending on the size of the original, the size of the original is changed to determine when the original width has changed and is determined to determine whether the correct original eraser size has been entered. Allows you to warn of what is being done.

In the eleventh aspect of the invention, the automatic feeding means feeds the continuous paper document to a predetermined position to enable the document frame erasing process for the continuous paper document.

In a twelfth aspect of the present invention, a plurality of document frame eraser size candidates are determined according to the document width detected by the detector, and the determined plurality of document frame eraser size candidates are displayed. It is possible to reliably prevent an input of the document frame erase size exceeding the document width by instructing to select a desired document frame erase size from the displayed plurality of document frame erase size candidates.

A thirteenth aspect of the present invention compares the document width detected by the detection means with the document width corresponding to the document frame erase size input by the input bone English, and determines the size of the document width. The display unit is warned of the change in the document frame erase size input before the start of document feeding by the automatic feeding unit, and the user is notified of the fact that the document erase size for invalidating the document frame erase is input. It is possible to specify explicitly.

[0036]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram for explaining the arrangement of an image forming apparatus showing an embodiment of the present invention.

In the figure, reference numeral 100 denotes a main body (main body) of the image forming apparatus, which is mainly composed of the CPU 10, and further exchanges control data and control timing with the CPU 30 of the continuous paper document feeder 400. Calculation control is performed.

Reference numeral 11 denotes a read-only memory (ROM) which stores a control procedure (control program) for the main body 100, and the CPU 10 controls each constituent device connected via a bus according to the control procedure stored in the ROM 11. Control.

Reference numeral 12 is a random access memory (RAM) which is a main memory used as a storage area for input data of the main body 100, a working storage area, and the like. 13 is an input of the sensor 14 of the main body 100, a motor 15,
It is an input device (I / O) that outputs a control signal of the CPU 10 to a load such as the clutch 16. PL indicates an operation panel.

Reference numeral 31 is a read-only memory (ROM) storing a control procedure (control program) of the continuous paper document feeder 400, and the CPU 30 is connected via a bus in accordance with the control procedure stored in the ROM 31. Control each component.

Reference numeral 32 is a random access memory (RAM) which is a main storage device used as a storage area for input data and a working storage area of the continuous paper document feeder 400. 33 is a sensor 34 of the continuous paper document feeder 400.
Is an input / output device (I / O) that inputs the control signals of the CPU 30 to the loads such as the motor 35 and the clutch 36.

Reference numeral 37 is an A / D converter, which sends the analog signal from the slide volume 38B to the CPU 30 which has been converted into a digital signal.

Reference numeral 51 denotes a read-only memory (RO) storing a control procedure (control program) of the document feeding device 200.
M), and the CPU 50 controls each constituent device connected via the bus in accordance with the control procedure stored in the ROM 51.

Reference numeral 52 is a random access memory (RAM) which is a main memory used as a storage area for input data of the document feeding apparatus 200, a working storage area, and the like. 5
Reference numeral 3 denotes a CPU 50 for the input of the sensor 54 and the like of the document feeder 200 and the load of the motor 55, the clutch 56 and the like
It is an input / output device (I / O) that outputs the control signal.

Reference numeral 57 is an A / D converter, which sends the analog signal from the slide volume 38A to the CPU 50 which has converted it into a digital signal.

Correspondence between the present embodiment and each means of the first to eleventh inventions and their functions will be described below with reference to FIG.

A first aspect of the present invention is an automatic feeding means (RDF200, CFF400) for feeding an original to a predetermined position, and a detecting means (volume control for detecting the original width of the original fed by the automatic feeding means). 38A, 38B) and a document frame erasing unit for erasing the image area according to the document size (in this embodiment, the blank exposure unit 10 shown in FIG. 2 described later).
7, other frame erasing means (for example, a laser unit may be used) and a determining means (CPU30, CPU50) for determining a plurality of document frame erasing size candidates according to the document width detected by the detecting means. Display means for displaying the plurality of document frame erase size candidates determined by the determining means (in this embodiment, by the message display 701 of the operation panel PL described later)).
Instructing means for selecting and instructing a desired document frame erase size from a plurality of document frame erase size candidates displayed on the display means (in this embodiment, arrow keys 627 and O on the operation panel PL are used).
K key 628) and a control unit (in this embodiment, the CPU 10 stores the ROM 11 in the ROM 11 so as to control the frame erasing of the document frame erasing unit so as to erase the image area according to the document frame erasing size designated by the designating unit. Configured as a means for executing based on various stored programs), the CPU 30 or the CPU 50 has a volume 38A,
38B, when a plurality of document frame erase size candidates are determined according to the document width detected by 38B, the determined plurality of document frame erase size candidates are displayed on the message display 701, and the displayed document frame erase sizes are displayed. Use the arrow keys 627 and OK key 6 to select the desired erased size
When a selection instruction is given by 28, the CPU 10 controls the frame erasing of the blank exposure unit 107 so as to erase the image area according to the instructed original frame erasing size, and the selected original frame erasing size is the original size. It is possible to perform an effective document frame erase size process on a fed document while avoiding selection of a larger document frame erase size.

A second aspect of the present invention is a determining means (CPU 30, 5).
0) makes it possible to determine a document frame erasing size candidate before starting the image forming operation, and to determine a document frame erasing size effective for the document width before document feeding.

A third aspect of the present invention is a determining means (CPU 30, 5).
0) determines a document frame erasing size candidate when the document width detected by the detecting means (volumes 38A, 38B) changes, and captures the time when the document width changes and selects an effective document frame erasing size candidate. Allows you to decide.

A fourth aspect of the present invention is a determining means (CPU 30, 5).
0) determines a document frame erasing size candidate after a predetermined time has elapsed after the document width detected by the detection means (volumes 38A, 38B) has changed, and after the document width has changed, the document width is definitely determined. It is possible to determine an effective document frame erasing size candidate by grasping the time when it is done.

A fifth aspect of the present invention is an automatic feeding means (RDF20).
0, CFF 400), detection means (volumes 38A, 38B) for detecting the document width of the document fed by the automatic feeding means, and document frame erasing means for erasing the image area according to the document size (volumes 38A, 38B). In this embodiment, a blank exposure unit 107 shown in FIG. 2 to be described later is used, but other frame erasing means (for example, a laser unit may be used) and an input means for inputting a document frame erasing size of the document erasing means. (Operation panel PL) and comparison means for comparing and comparing the document width detected by the detection means and the document width corresponding to the document frame erase size input by the input means (in this embodiment, in this embodiment). Then, according to the comparison result of the CPU 10) and the comparison means, the display means is warned of the change of the document frame erasing size inputted before the start of feeding the continuous image sheet document by the automatic feeding means. When the document frame erase size of the blank exposure unit 107 is input by the operation panel PL, the CPU 10 detects the document width detected by the volumes 38A and 38B and the notification unit (CPU 10 in this embodiment). The size of the document width corresponding to the document frame erase size input by the input means is compared and determined, and the warning means causes the CFF 400 or the RDF 20 to respond in accordance with the comparison result.
It is possible to warn the message display 701 of a change in the document border erase size input before the start of document feed by 0, and to clearly indicate to the user that the invalid document border erase size has been input. And

In the sixth invention, the document width corresponding to the document frame erase size input by the input means is larger than the document width detected by the comparison means (CPU 10) by the detection means (volumes 38A, 38B). If it is determined, the warning means warns the display means to that effect, and it is possible to clearly indicate that an invalid document frame erase size has been entered, which causes the document to be missing according to the input document frame erase size. And

In the seventh invention, the document width corresponding to the document frame erase size input by the input means is smaller than the document width detected by the comparison means (CPU 10) by the detection means (volumes 38A, 38B). If it is determined, the warning means warns the display means to that effect, and clearly indicates that the original document frame eraser size input is meaningless according to the input document frame eraser size. It is possible.

An eighth aspect of the present invention is a comparison means (CPU 10).
Is a detection unit (volume 38
(A, 38B) is judged by comparing the size of the document width detected by the input unit with the document width corresponding to the document frame erase size input by the input means, and whether a proper document frame erase size is input before image formation. It is possible to judge whether or not the invalid document frame erasing size is input by issuing a warning.

According to a ninth aspect of the invention, the comparing means erases the document width detected by the detecting means and the document frame input by the inputting means when the document width detected by the detecting means (volumes 38A, 38B) changes. By comparing the size of the original with the size of the original, the time when the original width changes is detected to determine if the correct original eraser size has been entered. It is possible to warn that

A tenth aspect of the present invention is a comparison means (CPU 10).
Compares the document width detected by the detection unit with the document width corresponding to the document frame erase size input by the input unit after a predetermined time has elapsed since the document width detected by the detection unit changed. It is possible to capture the time when the document width has changed and settled to determine whether a proper document frame eraser size has been entered and warn that an invalid document frame eraser size has been entered. To do.

The eleventh invention is an automatic feeding means (CFF4
00) feeds the continuous paper document to a predetermined position and enables the document frame erasing process for the continuous paper document.

FIG. 2 shows the main body 1 of the image forming apparatus shown in FIG.
10 is a cross-sectional configuration diagram illustrating an example of No. 00, which corresponds to a case where the image forming apparatus main body 100 has an image reading function and an image recording function.

In the figure, reference numeral 200 denotes a circulation type document feeding device (hereinafter referred to as RDF) for automatically feeding a document, 22.
Reference numeral 0 is a reserved document feeder (hereinafter, referred to as a sub feeder) that reserves the next document during image formation, 300 is a collating device with staples (hereinafter, staple sorter), 40
Reference numeral 0 denotes a continuous paper original feeding device (hereinafter, referred to as CFF) for automatically feeding continuous paper such as computer originals,
Each of these devices 200 to 400 is
Can be used in any combination.

In the main body 100, 101 is a platen glass on which a document is placed, 102 is an optical path, 103 is an illumination lamp (exposure lamp) for illuminating the document, 104 is a toner sensor for detecting the presence or absence of toner in the hopper, and 105. Is a photosensitive drum, 106 is a primary charger, 107 is a blank exposure unit, 108 is a potential sensor for measuring the potential on the photosensitive drum 105, 109 is a developing device, 110 is a transfer charger, 1
11 is a separation charger, 112 is a cleaning device, 113
Is a main motor for driving the photosensitive drum and the like. 114
Is an upper deck, 115 is a lower deck, 150 is a multi-manual paper feed port, 124 is a side deck, and 118 and 119 are paper feed rollers.

Reference numeral 120 is a registration roller, 121 is a conveyor belt for conveying the recording sheet on which an image has been recorded to the fixing side, 122
Is a fixing device for fixing the conveyed recording paper by thermal fixing.

The surface of the above-mentioned photosensitive drum 105 is composed of a photoconductor and a seamless photoconductor using a conductor, and the drum 105 is rotatably supported and responds to the pressing of a copy start key described later. The main motor 113, which operates in this manner, starts rotation in the direction of the arrow in the figure.

Next, when the predetermined rotation control of the 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 integrated with the first scanning mirror. The reflected light of the original is imaged on the drum 105 via the optical path 102.

The drum 105 is corona charged by the primary charger 106. After that, the image (original image) irradiated by the illumination lamp 103 is slit-exposed, and an electrostatic latent image is formed on the drum 105 by the known Carlson process. Next, the electrostatic latent image on the photosensitive drum 105 is transferred to the developing device 1.
The toner image is developed by the developing roller No. 09 and visualized as a toner image, and the toner image is transferred onto a transfer paper as described later by the transfer charger 110.

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 to the main body apparatus, and the registration roller 120 causes the leading edge of the latent image. Is aligned with the leading edge of the transfer paper. After that, the transfer paper passes between the transfer charger 110 and the drum 105, and is discharged to the outside of the main body 100. Drum 1 after transfer
Reference numeral 05 indicates the cleaning device 11 that continues to rotate and is composed of a cleaning roller and an elastic blade.
2, the surface is cleaned.

Further, 127 is a double-sided recording side or multiplex recording side, or a paper discharge flapper for switching between a reverse discharge path and a discharge side path, 129 is a reverse discharge switchback roller, and 131 is a double-sided recording side or multiplex recording side. It is a reverse discharge flapper that switches between the reverse discharge path and the reverse discharge path, and guides the transfer paper to the switchback roller 129 by rotating to the right. Reference numeral 128 denotes an intermediate tray discharge flapper, which 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 drum 105 side.

During double-sided recording (double-sided copying), the paper discharge flapper 127 is raised and the reverse paper discharge flapper 131 is rotated to the right to copy the copied transfer paper to the switchback roller 12.
9 and the transfer paper passes through the reverse paper ejection flapper 131 and then the switchback roller 129 is reversed to output the paper via the intermediate tray paper ejection flapper 128 to the intermediate tray 13
Store in 0.

At the time of multiple recording (multiple copying), the paper discharge flapper 127 is raised and the reversal paper discharge flapper 131 is rotated to the left to transfer the copied transfer paper to the intermediate tray paper discharge flapper 1.
The paper is ejected via 28 and stored in the intermediate tray 130. The intermediate tray 130 can store, for example, up to 50 transfer sheets.

At the next back surface recording or multiple recording, the transfer papers stored in the intermediate tray 130 are fed one by one from the bottom and guided to the registration rollers 120.
Further, during reverse ejection, the reverse ejection flapper 131 is rotated to the right to guide the transfer sheet to the switchback roller 129, and after the transfer sheet reaches the switchback roller 129 sufficiently, the switchback roller 129 is reversed. ,
The transfer paper is ejected outside the machine by the paper ejection roller 134.

In the RDF 200, 201 is a stacking tray on which a stack of originals 202 is set. The stacking tray 201 is provided with a width direction regulating plate (regulating plate) for regulating the width direction of the document in the document feeding direction so that the document is not skewed at the time of feeding the document. Slide vertically. The slide volume 38A moves in conjunction with this. Thereby, the width of the document can be detected.

First, in the case of a one-sided original, the half-moon roller 203
And the separation roller 204 separates the originals one by one from the lowermost part of the original stack 202, and the separated originals are fed by the conveyance roller 2
05 and the entire surface belt 206, platen glass 10
The conveyance is stopped to the exposure position 1 and then the copying operation is started. After the copying is completed, the original on the platen glass 101 is returned to the uppermost surface of the original bundle 202 again by the large conveyance roller 207 and the paper discharge roller 208.

Reference numeral 209 denotes a recycle lever for detecting one circulation of the original document. The recycle lever 209 is placed on the upper part of the original document stack at the time of starting the feeding of the original documents, and the original documents are sequentially fed so that the rear end of the final original document is the recycling lever. When the document exits from 209, it falls on the stacking tray 201 by its own weight to detect the circulation of the document.

Next, in the case of a double-sided original, the original is once guided from the paths I and II to the path III as described above, and after the copying is completed,
By switching the rotatable switching flapper 210, the leading edge of the document is guided to the path, and the platen glass 10 is passed through the path II by the conveying roller 205 and the entire surface belt 206.
1. Stop feeding the original document. That is, the rotation of the large conveyance roller 207 causes the document to be reversed on the route of paths III to IV to II.

Further, the original stack 202 is passed through the paths I to II one by one.
It is also possible to count the number of documents by conveying the sheets through III-IV-V-VI until one cycle is detected by the recycle lever 209.

When a small-sized sheet of one-sided original is ejected after copying, the original on the platen glass 101 is re-fed by the full-face belt 206 and the ejection roller 211.
It is returned to the top of 2.

The staple sorter 300 has a fixed non-sort tray 311 of 20 bins and performs collation.

In the sort mode, the copied sheets are sequentially ejected from the paper ejection roller 134 of the main body, enter the conveyance roller 301 of the sorter 300, pass the conveyance path 303, and are ejected from the ejection roller 305 to each bin of the tray 312. Each time the paper is discharged, each bin is moved up and down by a bin shift motor (not shown) to perform collation.

When the staple mode is selected and the staple signal is input from the main body 100, the staple device 32 is moved by one bin by the bin shift motor.
0 staples sheets in each bin.

The CFF 400 retracts the RDF 200 and the sub-feeder upward, and is connected and arranged at a predetermined position on the upper surface of the main body 100.

In CFF400, 401 is CFF4
It is a continuous paper fed by 00. 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. 409 is a continuous paper original 401
It is an upper cover to suppress. A detection sensor 410 is used for detecting a document and detecting a jam. A width regulating plate for preventing the skewed conveyance of the continuous paper is provided, and the slide volume 38B (see FIG. 3) also moves in conjunction with the regulating plate. Thereby, the width of the document can be detected.

During the CFF operation, the scanning mirror 171 of the main body 200 is arranged in the direction of the arrow in FIG. 2, and the CFF mirror 170 is arranged above. As a result, CFF mirror 1
The continuous paper 401 on 70 is illuminated by an illumination lamp 103 that is integrally formed with a CFF mirror 170, and the reflected light of the document is imaged on the drum 105 via the CFF mirror 170 and the optical path 102.

FIG. 3 is a top perspective view of CFF 400 shown in FIG.

As shown in this figure, the tractor 402 slides vertically in the feeding direction of the continuous paper 401 in accordance with the width of the continuous paper 401. The slide volume 38 also moves in conjunction with it. As a result, the width of the document can be detected (width information is input to the CPU 30 via the A / D converter 37 shown in FIG. 1).

FIG. 4 is a layout diagram showing an example of an operation panel arranged on the front side of the upper portion of the main body 100 shown in FIG.

The operation panel has a key group and a display group as described below.

In the key group of FIG. 4, an asterisk (*) key 601 is used by the operator (user) in the setting mode such as the binding margin amount setting or the document frame erasing size setting. 606 is an all reset key,
Press to return to standard mode.

Reference numeral 605 denotes a copy start key (copy start key), which is pressed when copying is started. A clear / stop key 604 functions as a clear key during standby (standby) and as 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 the time of pushing is completed, the copying operation is stopped.

Reference numeral 603 is a ten-key pad which is pressed to set the number of copies. Also used when setting * (asterisk) mode. A memory key 619 allows the user to register modes that are frequently used. Here, four modes M1 to M4 can be registered. 62
Reference numeral 9 is a cover key, 630 is a continuous shooting key, 634 is an interrupt key, and 635 is an ID key.

Reference numerals 611 and 612 denote copy density keys, which are pressed when manually adjusting the copy density. An AE key 613 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). 60
Reference numeral 7 denotes a cassette selection key, which is pressed when selecting the upper deck 114, the lower deck 115, the side deck 124, and the multi-manual paper feed port 150. When a document is placed on the RDF 200, the AP can be pressed with this key 607.
S (automatic paper cassette selection) can be selected. 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 to make a unity size (original size) copy. An automatic scaling key 616 is pressed to automatically reduce or enlarge the image of the original according to 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. 625 is a binding margin key,
A binding margin of a specified length can be created on the left side of the transfer paper. A photo key 624 is pressed when copying a photo original. A multiple key 623 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 at that time, the size of the original is set by the arrow keys 627 and the OK key 628. Reference numeral 621 denotes a sheet frame erasing key, which is pressed when erasing a document frame according to the size of the cassette.

Reference numeral 614 denotes a sheet discharge method selection key for selecting a staple, sort, or group sheet discharge method. When the stapler is connected to the sheet after recording, a staple mode or a sort mode is 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 A3 or B.
Z-fold the printed paper of size 4 into a Z-shaped cross section, and A3
It is possible to select either half-folding or half-folding of a recorded sheet of B4 size or B4 and cancel the selection.

In the display group of FIG. 4, reference numeral 701 is an LCD (liquid crystal) type message display for displaying information relating to copying. For example, 1 × 8 × 8 dots.
Make letters, 40-character text message, and fixed-size variable key 6
08,609, same size key 610, zoom keys 617,6
The copy magnification set in 18 can be displayed. The display 701 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. 7
Reference numeral 09 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 magnification, single-sided copy to single-sided copy are set.
1 copy in standard mode when RDF200 is not used
Sheet, density manual mode, normal size, single-sided original to single-sided copying. 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.

Next, with reference to the flow chart shown in FIG. 5, the document frame erase processing operation of the continuous paper document in the image forming apparatus according to the present invention will be described. [First Embodiment] FIG. 5 is a flowchart showing an example of a first document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (7) indicate each step.

First, a continuous paper original is set on the CFF 400 (1), and it is judged whether or not the user has pressed the original frame erase key 620 on the operation panel shown in FIG. 4 (2).
In the case of S, the regulation plate of the stacking tray of the CFF 400 is moved in the width direction of the original to detect the width of the original based on the original width data obtained by A / D converting the resistance value of the volume 38 (3 ), It is determined whether or not the copy start key 605 is pressed (4), and if NO, the process returns to step (3).

On the other hand, if the result of the determination in step (4) is YES, the CPU 30 determines the document frame erase input size based on the document width of the continuous paper detected in step (3) (5).

For example, when the document width of the continuous paper detected in step (3) is 297 mm, it is determined that the candidate of the document frame erasing input size is A4, B5, B4 or A3.

Next, since the document frame erasing input size determined in step (5) is displayed on the message display 701, A4, B5, B4 among the document frame erasing input size candidates while confirming the display screen. , A3 is selected with the arrow keys 627 and the OK key 628 (6), the document frame erasing image forming operation is performed (7), and the process ends.

FIG. 6 is a flowchart showing an example of a second document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (7) indicate each step.

First, a continuous paper original is set on the CFF 400 (1), and it is judged whether or not the user has pressed the original frame erase key 620 (2).
The regulation plate of the stacking tray of 0 is moved in the width direction of the original to detect the width of the original based on the original width data obtained by A / D converting the resistance value of the volume 38 (3), and the detected original is detected. Depending on the width, the CPU 3 selects the candidate for the erased input size
0 is determined (4).

For example, when the document width of the continuous paper detected in step (3) is 297 mm, it is determined that the document frame erase input size candidate is any one of A4, B5, B4, and A3.

Next, since the document frame erasing input size determined in step (4) is displayed on the message display 701, A4, B5, B4 among the document frame erasing input size candidates while confirming the display screen. , A3 is selected with the arrow keys 627 and the OK key 628 (5), and then it is judged whether or not the copy start key 605 is pressed (6). If NO, the process returns to step (3).

On the other hand, if the result of the determination in step (6) is YES, the image forming operation normally accompanied by erasing the document frame is performed (7), and the process is terminated.

FIG. 7 is a flow chart showing an example of a third document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (9) indicate each step.

First, a continuous paper original is set on the CFF 400 (1), and it is judged whether or not the user depresses the original frame erase key 620 (2). The document width aligned in the document width direction is detected, the document width data is stored in the work area A on the RAM 32 (3), and the document is waited for a certain period of time (4).

Thereafter, the original document width A stored in step (3) before the fixed time is compared with the current original document width, and the CPU 30 determines whether the two original document width values match (the original document width is not changed).
Is determined (5), and if NO, the process returns to step (3) to detect the document width size.

On the other hand, if the result of the determination in step (5) is YES, a candidate for the document frame erase input size is determined based on the document width detected in step (3) (6).

For example, when the document width of the continuous paper detected in step (3) is 297 mm, it is determined that the document frame erase input size candidate is any one of A4, B5, B4, and A3.

Next, since the document frame erase input size determined in step (6) is displayed on the message display 701, A4, B5, B4 among the document frame erase input size candidates while confirming the display screen. , A3, a desired document frame erasing size is selected with arrow keys 627 and OK key 628 (7). After that, it is judged whether or not the copy start key is pressed (8), and if NO, the process returns to (3).

On the other hand, if the determination in step (8) is YES, the document frame erasing image forming operation is normally performed (9), and the process is terminated.

In the first embodiment, the continuous paper original is CFF.
Although the case of performing the document frame erasing process at the time of feeding at 400 has been described, the warning process may be configured to be performed when the width of the document frame erasing size selected and set is larger than the document frame. Examples will be described. [Second Embodiment] FIG. 8 is a flowchart showing an example of a fourth document frame erasing processing procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (8) indicate each step.

First, a document is set (1) in the continuous paper document feeder (CFF), and the user erases the document frame key 62.
It is judged whether 0 is pressed (2), and step (2)
If the determination is YES, the document size is the desired document frame size from the document frame size group indicated by the cursor displayed on the message display 701.
7 and OK key 628 to select and set (3).

After that, the regulation plate of the stacking tray of the CFF 400 is moved to detect the document width adjusted in the width direction of the continuous paper document from the value obtained by A / D converting the value of the volume 38B (4) and start copying. It is determined whether or not the key 605 is pressed (5). If NO, the process returns to step (4), and if YES, the width of the document frame erase size selected and set in step (3) is detected. The width of the border erased size is compared to the original width, and it is determined whether the width of the border erased size is larger than the document width (6). If the width of the border erased size is larger, the border is displayed on the message display 701 shown in FIG. A message indicating that the size width should be changed is displayed (7), and the process returns to step (3).

On the other hand, if the judgment in step (6) is NO, the document frame erasing image forming operation is normally executed (8),
The process ends.

FIG. 9 is a flow chart showing an example of the fifth document frame erasing processing procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (8) indicate each step.

First, a document is set (1) in the continuous paper document feeder (CFF), and the user erases the document frame key 62.
It is judged whether 0 is pressed (2), and step (2)
If the determination is YES, the document size is the desired document frame size from the document frame size group indicated by the cursor displayed on the message display 701.
7 and OK key 628 to select and set (3).

After that, the regulating plate of the stacking tray of the CFF 400 is moved to detect the document width adjusted in the width direction of the continuous paper document from the value obtained by A / D converting the value of the volume 38B (4), and the selection setting is made. The width of the erased original frame is compared with the detected width of the original to determine whether the width of the erased size is larger than the original width (5). If the width of the original erased size is larger, The message display 701 shown in FIG. 4 indicates that the width of the frame erasing size should be changed (6), and the process returns to step (4).

On the other hand, when the width of the document frame erase size is smaller in the judgment in step (5), the copy start key 6 is pressed.
It is determined whether or not 05 has been pressed (7), and if NO, the process returns to step (4), and if YES, a normal document frame erasing image forming operation is performed (8), and the process ends.

FIG. 10 is a flow chart showing an example of a sixth document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention. Note that (1) to (10)
Indicates each step.

First, a document is set (1) in the continuous paper document feeder (CFF), and the user erases the document frame key 62.
It is judged whether 0 is pressed (2), and step (2)
If the determination is YES, the document size is the desired document frame size from the document frame size group indicated by the cursor displayed on the message display 701.
7 and OK key 628 to select and set (3).

After that, the regulation plate of the stacking tray of the CFF 400 is adjusted to the original width adjusted by the volume 3 in the width direction of the original.
The value of 8B is detected from the A / D converted value and stored in the work area A of the RAM 32 (4). Then, after waiting for a certain period of time (5), when the certain period of time has elapsed, the contents of the work area A stored as the document width value before the certain period of time stored in step (4) and the current document width are compared. By comparing, it is determined whether the two match (6). If NO, the process returns to step (4). If YES, the width of the selected document frame erase size is compared with the detected document width. Then, it is judged whether the width of the frame erased size is larger than the document width (7). If the width of the document frame erased size is larger,
The message display 701 shown in FIG. 4 displays that the width of the border erase size should be changed (8), and the process returns to step (4).

On the other hand, if the width of the document frame erase size is smaller in the judgment of step (7), the copy start key 6 is pressed.
It is determined whether or not 05 has been pressed (9), and if NO, the process returns to step (4), and if YES, a normal document frame erasing image forming operation is performed (10), and the process ends.

In the first and second embodiments, the CFF400 is used.
Although the document frame erasing process at the time of feeding continuous paper from the above is described as an example, the present invention can be applied to the case of feeding a document from the RDF 200.

Correspondence between the present embodiment and each step of the twelfth invention and its action will be described with reference to FIGS. 5 to 7).

A twelfth aspect of the invention is to provide automatic feeding means (RDF200, CFF400) for feeding an original to a predetermined position, and detecting means for detecting the original width of the paper original fed by the automatic feeding means ( Volume 38A, 38B) and a document frame erasing means for erasing the image area according to the document size (in this embodiment, the blank exposure unit 107 shown in FIG. 2).
However, in the document frame erasing method of the image forming apparatus having other frame erasing means (for example, a laser unit may be used), a plurality of document frame erasing is performed according to the document width detected by the detecting means. A determination step (step (5) of FIG. 5, step (4) of FIG. 6, step (6) of FIG. 7) of determining size candidates and a display for displaying the determined plurality of document frame erase size candidates. Means (step (5) in FIG. 5, step (4) in FIG. 6, step (6) in FIG. 7)
Post-processing (not shown)) and an instruction step (step (6) in FIG. 5 and step in FIG. 6) for selecting and instructing a desired document frame erase size from a plurality of document frame erase size candidates displayed on the display means. By executing (5) and step (7) in FIG. 7, it is possible to surely prevent the document frame erase size input which exceeds the document width. [Third Embodiment] FIG. 11 is a flow chart showing an example of a first document frame erasing process procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (7) indicate each step.

First, a document is set on the RDF 200 (1), and it is judged whether or not the user has pressed the document frame erase key 620 on the operation panel shown in FIG. 4 (2). The regulation plate of the stacking tray of the RDF 200 is moved in the width direction of the original to adjust the width of the original to the volume 3
The resistance value of 8 A is detected based on the A / D converted original width data (3), and it is determined whether or not the copy start key 605 is pressed (4). If NO, step (3).
Return to

On the other hand, if the judgment in step (4) is YES, the CPU 50 determines the document frame erasing input size based on the document width detected in step (3) (5).

For example, when the document width detected in step (3) is 297 mm, the candidate for the document frame erase input size is A.
4, B5, B4, A3.

Next, since the document frame erase input size determined in step (5) is displayed on the message display 701, A4, B5, B4 among the document frame erase input size candidates while confirming the display screen. , A3 is selected by the arrow keys 627 and the OK key 628 (6), the document frame erasing image forming operation is performed (7), and the process is ended.

FIG. 12 is a flow chart showing an example of the second document frame erasing processing procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (7) indicate each step.

First, the original is set on the RDF 200 (1).
Then, it is determined whether or not the user has pressed the document frame erasing key 620 (2), and if YES, the regulation plate of the stacking tray of the RDF 200 is moved in the width direction of the document to align the documents. The width is detected based on the document width data obtained by A / D converting the resistance value of the volume 38A (3), and the CPU 50 determines a candidate of the document frame erase input size based on the detected document width (4).

For example, when the document width detected in step (3) is 297 mm, the document frame erase input size candidate is A.
4, B5, B4, A3.

Next, since the document frame erase input size determined in step (4) is displayed on the message display 701, A4, B5, B4 among the document frame erase input size candidates while confirming the display screen. , A3 is selected with the arrow keys 627 and the OK key 628 (5), and then it is judged whether or not the copy start key 605 is pressed (6). If NO, the process returns to step (3).

On the other hand, if the result of the determination in step (6) is YES, an image forming operation that normally involves erasing the document frame is performed (7), and the process ends.

FIG. 13 is a flowchart showing an example of a third document frame erasing processing procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (9) indicate each step.

First, the original is set on the RDF 200 (1).
Then, it is determined whether or not the user has pressed the document frame erase key 620 (2). If YES, the regulation plate of the stacking tray detects the document width aligned in the document width direction, and RA
Store document width data in work area A on M52 (3),
Wait for a certain period of time (4).

Thereafter, the original document width A stored in step (3) before the fixed time is compared with the current original document width, and the CPU 50 determines whether the two original document width values match (the original document width is not changed).
Is determined (5), and if NO, the process returns to step (3) to detect the document width size.

On the other hand, if the result of the determination in step (5) is YES, a candidate for the document frame erase input size is determined based on the document width detected in step (3) (6).

For example, when the document width detected in step (3) is 297 mm, the document frame erase input size candidate is A.
4, B5, B4, A3.

Next, since the original document frame erase input size determined in step (6) is displayed on the message display 701, A4, B5, B4 among the original document frame erase input size candidates while confirming the display screen. , A3, a desired document frame erasing size is selected with arrow keys 627 and OK key 628 (7). After that, it is judged whether or not the copy start key is pressed (8), and if NO, the process returns to (3).

On the other hand, if the result of the determination in step (8) is YES, the document frame erasing image forming operation is normally performed (9), and the process ends.

In the third embodiment described above, the document is read by the RDF 200.
Although the case of performing the document frame erasing process at the time of feeding in the above is described, it may be configured to perform the warning process when the width of the selected document frame erasing size is larger than the document frame. An example will be described. [Fourth Embodiment] FIG. 14 is a flowchart showing an example of a fourth document frame erasing process procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (8) indicate each step.

First, the document is set (1) on the document feeder (RDF) 200, and the user erases the document frame key 620.
It is determined whether or not is pressed (2), and if the determination in step (2) is YES, the size of the document is a desired document frame size from the document frame size group designated by the cursor displayed on the message display 701. Arrow key 627 for size
And OK key 628 to select and set (3).

Thereafter, the regulating plate of the stacking tray of the RDF 200 is moved to detect the original width adjusted in the width direction of the original from the value obtained by A / D converting the value of the volume 38A (4), and the copy start key 605. It is determined whether or not has been pressed (5), and if NO, the process returns to step (4), and if YES, the document detected as the width of the document frame erase size selected and set in step (3) The width is compared with the width to judge whether the width of the border erase size is larger than the document width (6). If the width of the border frame erase size is larger,
The message display 701 shown in FIG. 4 displays that the width of the frame eraser should be changed (7), and the process returns to step (4).

On the other hand, if the judgment in step (6) is NO, the document frame erasing image forming operation is normally executed (8),
The process ends.

FIG. 15 is a flow chart showing an example of a fifth document frame erasing processing procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (8) indicate each step.

First, a document is set (1) in the document feeder (RDF) 200, and the user erases the document frame key 620.
It is determined whether or not is pressed (2), and if the determination in step (2) is YES, the size of the document is a desired document frame size from the document frame size group designated by the cursor displayed on the message display 701. Arrow key 627 for size
And OK key 628 to select and set (3).

After that, the regulation plate of the stacking tray of the RDF 200 is moved to detect the original width adjusted in the width direction of the original from the value obtained by A / D converting the value of the volume 38A (4), and it is selectively set. The width of the original frame erase size is compared with the detected original width to determine whether the width of the original frame erase size is larger than the original width (5). If the width of the original frame erase size is larger, the screen shown in FIG. On the message display 701 shown, it is displayed that the width of the border erase size should be changed (6), and the process returns to step (4).

On the other hand, if the width of the original frame erase size is smaller than the original frame erase size determined in step (5), the copy start key 6 is pressed.
It is determined whether or not 05 has been pressed (7), and if NO, the process returns to step (4), and if YES, a normal document frame erasing image forming operation is performed (8), and the process ends.

FIG. 16 is a flow chart showing an example of a sixth document frame erasing process procedure for a document in the image forming apparatus according to the present invention. Note that (1) to (10) indicate each step.

First, a document is set (1) on the document feeder (RDF) 200, and the user erases the document frame key 62.
It is judged whether 0 is pressed (2), and step (2)
If the determination is YES, the document size is the desired document frame size from the document frame size group indicated by the cursor displayed on the message display 701.
7 and OK key 628 to select and set (3).

Thereafter, the regulation plate of the stacking tray of the RDF 200 detects the document width adjusted in the width direction of the document from the value obtained by A / D converting the value of the recording volume 38A, and the RAM 52.
It is stored in the work area A (4). Then, after waiting for a certain period of time (5), when the certain period of time has elapsed, the contents of the work area A stored as the document width value before the certain period of time stored in step (4) and the current document width are compared. By comparing, it is determined whether the two match (6). If NO, the process returns to step (4). If YES, the width of the selected document frame erase size is compared with the detected document width. Then, it is judged whether the width of the frame erased size is larger than the document width (7). If the width of the document frame erased size is larger,
The message display 701 shown in FIG. 4 displays that the width of the border erase size should be changed (8), and the process returns to step (4).

On the other hand, when the width of the original frame erase size is smaller than the original frame erase size determined in step (7), the copy start key 6 is pressed.
It is determined whether or not 05 has been pressed (9), and if NO, the process returns to step (4), and if YES, a normal document frame erasing image forming operation is performed (10), and the process ends.

Correspondence between the present embodiment and each step of the thirteenth invention and its action will be described below with reference to FIGS. 14 to 16.

A thirteenth invention is an automatic feeding means (RDF200, CFF400) for feeding an original to a predetermined position, and a detecting means for detecting the original width of the paper original fed by the automatic feeding means ( Volumes 38A, 38B) and a document frame erasing means for erasing the image area according to the document size (in this embodiment, the blank exposure unit 107 shown in FIG. 4).
However, in the document frame erasing processing method of the image forming apparatus having other frame erasing means (for example, a laser unit may be used), the input step of inputting the document frame erasing size of the document frame erasing means (FIG. 14). ~ Step (3) in FIG. 16)
And a comparison step of comparing and determining the size of the document width detected by the detection unit and the document width corresponding to the document frame erase size input by the input unit (step (6) in FIG. 14, step in FIG. 15). (5), step (7) in FIG. 16) and a warning step for warning the display means of the change of the document frame erasing size inputted before the start of document feeding by the automatic feeding means according to the comparison result ( By executing the step (7) in FIG. 14, the step (6) in FIG. 15, and the step (8) in FIG. 16), it is confirmed that the document erase size that invalidates the document frame erase is input and its change. It is possible to specify to the user.

[0160]

As described above, the first aspect of the present invention
According to the invention, when the deciding unit decides a plurality of document frame erasing size candidates according to the document width detected by the detecting unit, the determined plurality of document frame erasing size candidates is displayed on the display unit, When a desired document frame erase size is selected from the displayed plurality of document frame erase size candidates by the instructing means, the control means erases the image area in accordance with the instructed document frame erase size. Since the frame erasing of the erasing means is controlled, effective document frame erasing size processing is performed on the fed document while avoiding selection of the document frame erasing size in which the selected document frame erasing size is larger than the document size. be able to.

According to the second aspect of the invention, the determining means determines the document frame erasing size candidate before starting the image forming operation.
It is possible to determine the effective document frame erase size for the document width before feeding the document.

According to the third invention, the deciding means decides a document frame erasing size candidate when the document width detected by the detecting means changes, and catches the time when the document width changes to make an effective document. It is possible to determine a frame-erasing size candidate.

According to the fourth aspect of the invention, the determining means determines the document frame eraser size candidate after a lapse of a predetermined time from the change of the document width detected by the detecting means. It is possible to determine a valid document frame erase size candidate by capturing the time when the document width is determined.

According to the fifth aspect of the invention, when the document frame erasing size of the document frame erasing unit is input by the input unit, the comparing unit detects the document width detected by the detecting unit and the document frame input by the input unit. The size of the original width is compared and judged according to the erase size, and the warning means displays the change of the original frame erase size input before the start of feeding continuous image paper by the automatic feeding means according to the comparison result. To the user, it is possible to clearly indicate to the user that the invalid document frame erasing size has been input.

According to the sixth invention, a warning is issued when the comparing means determines that the document width corresponding to the document frame erase size input by the input means is larger than the document width detected by the detecting means. Since the means warns the display means to that effect, it is possible to clearly indicate that an invalid document frame erase size input has been made, which causes a document loss according to the input document frame erase size.

According to the seventh invention, a warning is issued when the comparison means determines that the document width corresponding to the document frame erase size input by the input means is smaller than the document width detected by the detection means. Since the means warns the display means to that effect, it is possible to clearly indicate that the original document frame erase size is input in which the original document frame erase is meaningless according to the input document frame erase size.

According to the eighth invention, the comparing means compares the size of the document width detected by the detecting means before the start of the image forming operation with the document width corresponding to the document frame erase size input by the inputting means. Since the determination is made, it is possible to determine whether or not an appropriate document frame erase size has been input before image formation, and warn that an invalid document frame erase size has been input.

According to the ninth invention, the comparing means responds to the document width detected by the detecting means and the document frame erase size input by the inputting means when the document width detected by the detecting means changes. Since the size of the document is compared and judged,
By grasping the time when the document width changes, it is possible to judge whether or not an appropriate document frame erase size has been input and warn that an invalid document frame erase size has been input.

According to the tenth aspect of the invention, the comparison means erases the document width detected by the detection means and the document frame erased by the input means after a lapse of a predetermined time from the change of the document width detected by the detection means. Since the size of the original is compared with the original width according to the size, the time when the original width changes and is determined is grasped to determine whether the correct original eraser size has been entered and it becomes invalid. It can warn you that you are typing.

According to the eleventh invention, the automatic feeding means is
By feeding the continuous paper document to a predetermined position, it is possible to erase the original frame of the continuous paper document.

According to the twelfth aspect of the present invention, a plurality of document frame eraser size candidates are determined according to the document widths detected by the detection means, and the determined plurality of document frame eraser size candidates are determined. Since the desired document frame eraser size is displayed on the display unit and the desired document frame eraser size is selected from the displayed plurality of document frame eraser size candidates, it is possible to reliably prevent the document frame eraser size input exceeding the document width.

According to the thirteenth invention, the size of the document detected by the detection means and the document width corresponding to the document frame erase size input by the input bone English are compared and judged,
According to the comparison result, the display unit is warned of the change of the document frame erase size input before the automatic document feeding unit starts feeding the paper document, so that the document erase size in which the document frame erase is invalid is input. It is possible to clearly indicate to the user that there is a change.

Therefore, there is an effect such that an effective document frame erasing size which does not waste the paper can be set before the continuous paper document or the normal document is fed, and the document frame erasing image formation can be efficiently started.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of an image forming apparatus according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional configuration diagram illustrating an example of the image forming apparatus main body illustrated in FIG.

FIG. 3 is a top perspective view of the CFF shown in FIG.

4 is a layout configuration diagram showing an example of an operation panel disposed on the front side of the upper portion of the main body shown in FIG.

FIG. 5 is a flowchart showing an example of a first document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 6 is a flowchart showing an example of a second document frame erasing processing procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 7 is a flowchart showing an example of a third document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 8 is a flowchart showing an example of a fourth document frame erasing processing procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 9 is a flowchart showing an example of a fifth document frame erasing process procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 10 is a flowchart showing an example of a sixth document frame erasing processing procedure for a continuous paper document in the image forming apparatus according to the present invention.

FIG. 11 is a flowchart showing an example of a first document frame erasing processing procedure for a document in the image forming apparatus according to the present invention.

FIG. 12 is a flowchart showing an example of a second document frame erasing processing procedure for a document in the image forming apparatus according to the present invention.

FIG. 13 is a flowchart showing an example of a third document frame erasing process procedure for a document in the image forming apparatus according to the present invention.

FIG. 14 is a flowchart showing an example of a fourth document frame erasing processing procedure for a document in the image forming apparatus according to the present invention.

FIG. 15 is a flowchart showing an example of a fifth document frame erasing process procedure for a document in the image forming apparatus according to the present invention.

FIG. 16 is a flowchart showing an example of a sixth document frame erasing processing procedure for a document in the image forming apparatus according to the present invention.

[Explanation of symbols]

 10 CPU 11 ROM 30 CPU 31 ROM 38A Volume 38B Volume 50 CPU 51 ROM 200 RDF 400 CFF

Claims (13)

[Claims] 1. An automatic feeding means for feeding an original to a predetermined position, a detecting means for detecting the original width of the original fed by the automatic feeding means, and an image area framed according to the original size. The document frame erasing means for erasing, deciding means for deciding a plurality of document frame erasing size candidates according to the document width detected by the detecting means, and the plurality of document frame erasing size candidates decided by the deciding means. Display means for displaying, and instruction means for instructing selection of a desired document frame erase size from a plurality of document frame erase size candidates displayed on the display means,
An image forming apparatus comprising: a control unit that controls the frame erasing of the document frame erasing unit to erase the image area according to the document frame erasing size designated by the designating unit. 2. The deciding means decides a document frame erasing size candidate before starting an image forming operation.
The image forming apparatus described. 3. The image forming apparatus according to claim 1, wherein the determining unit determines the document frame erase size candidate when the document width detected by the detecting unit changes. 4. The image forming apparatus according to claim 1, wherein the determining unit determines the document frame erase size candidate after a lapse of a predetermined time after the document width detected by the detecting unit changes. 5. An automatic feeding means for feeding an original to a predetermined position, a detecting means for detecting the original width of the original fed by the automatic feeding means, and an image area framed according to the original size. A document erasing unit for erasing, an input unit for inputting a document frame erasing size of the document frame erasing unit, a document width detected by the detecting unit and a document according to the document frame erasing size input by the input unit Comparing means for judging the size of the width and warning means for warning the display means of the change of the document frame erase size input before the start of document feeding by the automatic feeding means according to the comparison result of the comparing means. An image forming apparatus comprising: 6. When the comparing unit determines that the document width corresponding to the document frame erase size input by the input unit is larger than the document width detected by the detecting unit, the warning unit displays on the display unit. The image forming apparatus according to claim 5, wherein a warning is issued to that effect. 7. When the comparing unit determines that the document width corresponding to the document frame erase size input by the input unit is smaller than the document width detected by the detecting unit, the warning unit displays the warning on the display unit. The image forming apparatus according to claim 5, wherein a warning is issued to that effect. 8. The comparing means compares the document width detected by the detecting means before the start of the image forming operation with the document width corresponding to the document frame erase size input by the input means. The image forming apparatus according to claim 5. 9. The comparing means compares the document width detected by the detecting means with the document width detected by the detecting means and the document width corresponding to the document frame erase size input by the inputting means. 6. The image forming apparatus according to claim 5, wherein the image forming apparatus compares and determines. 10. The comparing means is an original according to the original width detected by the detecting means and the original frame erase size input by the input means after a lapse of a predetermined time from the change of the original width detected by the detecting means. The image forming apparatus according to claim 5, wherein the size and the width are compared and determined. 11. The image forming apparatus according to claim 1, wherein the automatic feeding unit feeds the continuous paper document to a predetermined position. 12. An automatic feeding means for feeding an original to a predetermined position, a detecting means for detecting the original width of the paper original fed by the automatic feeding means, and an image area depending on the original size. In a document frame erasing processing method of an image forming apparatus having a document frame erasing unit for erasing a frame, a determining step of determining a plurality of document frame erasing size candidates according to the document width detected by the detecting unit, and the determination step. And a display step of displaying the plurality of document frame eraser size candidates on a display means, and an instruction step of selecting and instructing a desired document frame eraser size from the displayed plurality of document frame eraser size candidates. A method for erasing a document frame of an image forming apparatus. 13. An automatic feeding means for feeding a document to a predetermined position, a detecting means for detecting a document width of the paper document fed by the automatic feeding means, and an image area according to the document size. In an original frame erase processing method of an image forming apparatus having an original frame eraser for eliminating a frame, an input step of inputting an original frame erase size of the original frame eraser, an original width detected by the detector and the input The comparison step of comparing the document width with the document width according to the document frame erase size input by the process, and the document frame erase size input before the start of document feeding by the automatic feeding unit according to the comparison result. And a warning step of warning the display means of the change of the above.