JPH06337560A - Copying device - Google Patents

Abstract

PURPOSE:To provide a copying device whose operability is improved by reducing the designation of a paper size in manual feeding which is troublesome for an operator in the case of performing copying by manual feeding to the minimum. CONSTITUTION:Whether or not a multiple manual feeding part is selected by a copying paper selecting key is judged(step 2001), and a mode for copying by manual feeding is started in the case of affirmative decision YES. Next, whether or not a copying start key is depressed is judged(step 2002), and in the case of the affirmative decision YES, a mode for designating the paper size in manual feeding is started(step 2003), and a size group related to a manual feeding sub-detecting volume is successively displayed on an LCD display by operating a cursor key, then the finish of the designation of the manual feeding by an OK key is waited for(step 2004).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine having a manual paper feed section.

[0002]

2. Description of the Related Art In a conventionally known copying machine, a manual paper feed section slides a paper guide plate so that a paper of any size (also referred to as a recording material or a transfer paper) can be placed. It is possible.

Therefore, it is necessary to recognize the paper size in advance depending on the copy mode (for example, the mode in which the copy magnification is automatically calculated based on the original size and the paper size).

Therefore, a paper size designation unit for designating the paper size of the copy paper placed on the manual paper feed unit is provided, and the paper size is recognized in advance.

[0005]

However, in the above-mentioned conventional example, the timing of activating the paper size designation unit for designating the paper size of the copy paper placed on the manual paper feed unit is set to a plurality of paper feed units. It was when the manual paper feed unit was selected by the selection key for selecting one paper feed unit from. Therefore, each time the manual feed unit is selected by the selection key, a request for the paper size is made, which is very complicated in terms of operability.

Further, in the above-mentioned conventional example, in order to change the paper size designated by the paper size designating unit for designating the paper size of the copy paper placed on the manual paper feeding unit, the paper size is again set. There was the trouble of having to specify the size.

Further, in the above-mentioned conventional example, the image forming operation is performed based on the paper size designated by the paper size designation unit for designating the paper size of the copy paper placed on the manual paper feed unit. Therefore, if the paper size is changed after the paper size is determined, not only the desired copy may not be obtained, but also the copy paper may not be conveyed normally and may become jammed. .

Therefore, in view of the above points, the object of the present invention is to
An object of the present invention is to provide a copying apparatus in which operability is improved by minimizing the manual feeding size designation that is troublesome to the operator when performing manual copying.

[0009]

In order to achieve such an object, the present invention is a copying machine having a manual paper feeding means, and a start command means for issuing a command for starting an image forming operation, and the manual paper feeding. Paper size designating means for designating a paper size of the copy paper placed on the means, selecting means for selecting one paper feeding means from a plurality of paper feeding means,
And a control unit for activating the paper size designation unit when the manual feed unit is selected by the selection unit and a start command is issued by the start command unit.

Further, the present invention has the constitutions listed below.

According to the present invention, in a copying apparatus having a manual paper feeding means, a paper size designating means for designating a paper size of a copy paper placed on the manual paper feeding means, and one paper feeding means from a plurality of paper feeding means. Selection means for selecting paper means,
A paper presence / absence detecting unit for detecting the presence / absence of a copy sheet placed on the manual sheet feeding unit; and a case where the manual sheet feeding unit is selected by the selecting unit and the presence of paper is detected by the paper presence detecting unit. And control means for activating the paper size designation means. Further, a state transition detecting means for detecting a state transition from a paper present state to a paper non-existing state by the paper presence / absence detecting means, and a state transition by the state transition detecting means after the size is designated by the paper size designating means. When not detected, it is also possible to have a prohibition means for prohibiting activation of the paper size designation means.

According to the present invention, in a copying machine having a manual paper feeding means, a paper size designating means for designating a paper size of a copy paper placed on the manual paper feeding means and a paper size designating means are designated. And a release unit for returning the paper size to a predetermined paper size. Here, it is preferable that the releasing means has a reset key for returning various set copy modes to a predetermined copy mode. .

According to the present invention, in a copying machine having a manual paper feeding means, a paper presence / absence detecting means for detecting the presence / absence of a copy paper placed on the manual paper feeding means and a manual paper feeding means. A paper size designating unit for designating the paper size of the copy paper, and after the paper size designating unit designates the paper size, the paper presence / absence detecting unit detects that there is no paper state. And a control means for invalidating the paper size designated by the paper size designating means and changing the paper size to a predetermined size. Here, it is preferable that the control unit changes the sheet size to the maximum size that can be set.

According to the present invention, in a copying machine having a manual paper feeding means, a paper presence detecting means for detecting the presence / absence of a copy paper placed on the manual paper feeding means, and a manual paper feeding means are provided. Paper size designating means for designating the paper size of the copy paper, display means for displaying a message to the operator, and after the paper size is designated by the paper size designating means, the presence / absence of the paper is detected by the paper presence detecting means. When it is detected that there is no paper, a control means for displaying a warning message on the display means is provided.

According to the present invention, in a copying machine having a manual paper feeding means, a paper width detecting means for detecting a paper width of a copy paper placed on the manual paper feeding means, and a copy placed on the manual paper feeding means. Paper size specifying means for specifying the paper size of the paper, original size data input means for inputting the original size data, calculating means for calculating the copy magnification from the original size data and the paper size data, and the paper size specifying means. After the paper size is specified by,
When the value detected by the paper width detection means is changed, it is provided with a control means for activating the calculation means assuming that a maximum size sheet according to the detection data is placed. Here, the paper width detection means can detect from the minimum sheet size that can be placed to the maximum size.

[0016]

According to the present invention, it is possible to obtain a copying apparatus with improved operability by reducing the troublesome designation of the manual feed size for the operator when performing manual copy.

[0017]

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

Embodiment 1 FIG. 1 is a block diagram showing a main part in one embodiment of the present invention. In the figure, reference numeral 800 is a control unit for controlling the main body of the copying machine (shown as 100 in FIG. 2). An operation panel 600 sets the copy mode and displays the status. Reference numeral 900 denotes a state detection unit of the manual sheet feeding unit, which detects the presence or absence of a transfer sheet and the width of the placed transfer sheet. However, the function of the state detecting means 900 is different in each embodiment (details will be described later).

Each of the above blocks will be described in detail with reference to FIG.

First, the main body of the copying machine will be described with reference to FIG.

In FIG. 2, reference numeral 100 denotes a copying machine main body, 20
Reference numeral 0 is a circulating automatic document feeder (hereinafter, referred to as RDF) that automatically feeds documents, 300 is a sorting device or sorter, and 400 is an automatic computer form feeder (hereinafter, referred to as CFF). Here, these RDF20
The 0, the sorter 300, and the CFF 400 can be freely used in combination with the main body 100.

A. Main Body (100) In FIG. 2, reference numeral 101 is an original table glass as an original table. Reference numeral 102 denotes an optical system as an image reading means, which includes a document illumination lamp (exposure lamp) 103, a scanning mirror, a lens, a motor 104, and the like. The exposure lamp 103 scans with the motor 104.
The original is illuminated with and the reflected light from the original is applied to the photosensitive drum 105 by the scanning mirror and the lens.

Around the photosensitive drum 105, a high voltage unit 106, a blank exposure unit 107, a potential sensor 108, a developing device 109, a transfer charging device 110, a separation charging device 111, and a cleaning device 112 are provided. The image recording means is constituted by these parts such as the photosensitive drum 105.

The photosensitive drum 105 is a main motor 113.
When the reflected light of the original is irradiated from the optical system 102, an electrostatic latent image is formed. This electrostatic latent image is
It is developed by the developing device 109 and visualized as a toner image.

On the other hand, the transfer paper sent from the upper cassette 114 or the lower cassette 115 through the pickup rollers 116 and 117 into the main body 100 by the paper feed rollers 118 and 119 is transferred to the front end of the toner image and its transfer by the registration roller 120. After the timing is adjusted so that the front end of the paper coincides with the leading edge of the paper, the paper is fed to the photoconductor drum 105, and the toner image is transferred by the transfer charger 110.

After this transfer, the transfer paper is separated from the photosensitive drum 105 by the separation charger 111, and the transfer belt 12
It is guided to the fixing device 122 by 1 and is fixed by pressure and heating, and then discharged by the discharge roller 123 to the outside of the main body 100. The surface of the photosensitive drum 105 is cleaned by the cleaning device 112.

The main body 100 is equipped with a deck 124 capable of accommodating 4000 transfer sheets, for example. The lifter 125 of the deck 124 rises according to the amount of transfer paper so that the transfer paper always contacts the paper feed roller 126.

A multi-manual feeding section 150 capable of storing 100 sheets of transfer paper is also provided.

Further, in FIG. 2, 127 is a paper discharge flapper, which switches the path between the double-sided recording side or the multiplex recording side and the discharge side (sorter 300). The transfer paper sent from the discharge roller 123 is switched to the double-sided recording side or the multiple recording side by the discharge flapper 127.

Reference numeral 128 denotes a lower conveyance path, which is the discharge roller 1.
The transfer paper sent out from 23 is turned upside down via the reversing path 129 and guided to the re-feed tray 130. Also, 13
Reference numeral 1 is a multiple flapper that switches between double-sided recording and multiplex recording paths.
The transfer paper is directly guided to the lower conveyance path 128 without passing through 9.

Reference numeral 132 is a paper feed roller for feeding the transfer paper to the photosensitive drum 105 side via the path 133. Thirteen
Denoted at 4 is a discharge roller which is arranged in the vicinity of the discharge flapper 127 and discharges the transfer sheet switched to the discharge side by the discharge flapper 127 to the outside of the machine.

At the time of double-sided recording (double-sided copying) or multiplex recording (multiplex copying), by raising the paper discharge flapper 127, the copied transfer paper is conveyed in the conveying paths 129, 1.
It is stored in the re-feed tray 130 in a state of being turned upside down via 28. At this time, the double flapper 131 is tilted to the right during double-sided recording, and the double flapper 13 is moved during multiple recording.
Tilt 1 to the left. At the time of back side recording or multiplex recording to be performed next, the transfer sheets stored in the re-feed tray 130 are routed one by one from the bottom by the sheet feeding roller 132 to the path 133.
Through the registration roller 120 of the main body.

When the transfer paper is reversed and discharged from the main body 100, the paper discharge flapper 127 is raised to raise the flapper 1.
31 is tilted to the right to transfer the copied transfer paper to the transport path 12
9 and the trailing edge of the transfer paper is the first feed roller 140.
After passing through, the reversing roller 142 conveys it to the second feed roller 141 side, and the discharge roller 134 reverses the transfer paper and discharges it outside the machine.

B. Main Body Control Device (800) FIG. 3 is a block diagram showing the main body control unit 800 in this embodiment. In the figure, reference numeral 801 is a CPU that controls the entire copying machine. Reference numeral 802 denotes a read-only memory (ROM) in which a control procedure (control program: shown in FIG. 8 and subsequent figures) of the copying machine main body 100 is stored in advance.
1 controls each component connected via the bus BUS according to the control procedure stored in the ROM 802.
Reference numeral 803 denotes a random access memory (RAM) which is a main storage device for storing input data and used as a work storage area. An I / O interface circuit 804 outputs a control signal from the CPU 801 to the load of the main motor 113 (see FIG. 2) and inputs signals from various sensors to the CPU 801.

C. Operation Panel (600) FIG. 4 shows an arrangement configuration example of the operation panel provided in the copying machine main body 100.

In FIG. 4, an asterisk (*) key 601 is used in the setting mode when the operator (user) sets the binding margin amount and the size of the document frame erasing. Used for. A cursor key 627 is used to select a setting item in the setting mode. An OK key 628 is used to confirm the setting contents in the setting mode.

An all reset key 606 is pressed to return to the standard mode. The reset key 602 is also pressed when returning from the auto shutoff state to the 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 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 to interrupt continuous copying. That is, the copying operation is stopped after the copying when the stop key is pressed is completed.

Reference numeral 603 is a ten-key pad which is pressed to set the number of copies. It is also used when setting the mode using the * (asterisk) key.

Reference numeral 619 denotes a memory key, which allows a user to register a mode that is frequently used. here,
It is possible to register four modes of M1 to M4.

Reference numerals 611 and 612 denote copy density keys, which are pressed when manually adjusting the copy density. 613 is A
The E key is pressed to automatically adjust the copy density according to the density of the original, or to cancel the AE (automatic density adjustment) and switch the density adjustment to manual.

Reference numeral 607 denotes a copy paper selection key, which is an upper cassette 114, a lower cassette 115, and a paper deck 1.
24, pushes when selecting the multi-manual feed unit 150. When a document is placed on the RDF 200, APS (automatic paper cassette selection) can be selected with this key 607. When APS is selected, a cassette having the same size as the original is automatically selected. At this time, the document size data is sent from the RDF 200 to the main body 100.

Reference numeral 610 denotes a unity-size key, which is pressed when copying at the same size (actual size). An automatic scaling key 616 is pressed to automatically reduce or enlarge the image of the original according to the designated copy 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 standard size original document, and at that time, the original size is set by the asterisk key 601. 62
Reference numeral 1 denotes a sheet frame erasing key, which is pressed to erase the frame of the original in accordance with the copy paper size.

Reference numeral 629 denotes a cover mode setting key, which is used when the front cover, the back cover are prepared and the slip sheet is inserted.

A page continuous copy key 630 is used to continuously copy the left and right pages of a two-page spread book.

Reference numeral 614 denotes a sheet discharge method selection key for selecting the staple sort, sort, and group discharge methods. When the stapled sorter is connected to the sheet after recording, the staple sort mode, the sort mode, and the group mode. Can be selected or the selection mode can be canceled.

Reference numeral 631 denotes a reservation key, which is the reservation tray 21.
It is used when starting the setting of the copy mode for the reserved original placed on 0 (see FIG. 2) and when canceling the reserved setting. A reservation setting key 632 is used as an enter key when the reservation mode is set.

Reference numeral 633 is a guide key, which is used when the explanation of the functions corresponding to various keys is displayed on the message display 701.

Reference numeral 701 is an LC for displaying information regarding copying.
It is a D (liquid crystal) type message display, 9
Characters and figures are displayed with 6 × 192 dots. For example,
Number of copies set with numeric keypad 603, fixed-size variable key 60
8,609, same size key 610, zoom keys 617,61
The copy magnification set in step 8, the paper size selected by the paper selection key 607, a message indicating the state of the copying machine main body 100, a guide message indicating the operation procedure, and other setting contents of various modes are displayed.

Reference numeral 704 denotes an AE display, which is an AE key 61.
Lights when the AE (automatic density adjustment) mode is selected by 3. Reference numeral 709 denotes a preheat indicator, which lights up in the preheat state.

When the RDF 200 is used in the standard mode, the number of copies is one, the density AE mode, automatic paper selection, normal magnification, single-sided copy to single-sided copy are set.
Further, in the standard mode when the RDF 200 is not used, the number of copies is one, the density manual mode is set, and the setting is set to single-sided copying from a single-sided original. Here, whether the RDF 200 is in use or not is determined by whether or not a document is set in the RDF 200.

FIG. 5 is a diagram showing the structure of the multi-manual feed unit 150. In the figure, reference numeral 151 denotes a paper regulation guide having a slidable structure, which regulates the lateral width of the transfer paper placed on the manual feed tray 152. A width detection volume 153 is connected to the paper regulation guide 151, and linearly detects from the minimum mountable paper size to the maximum mountable paper size. The paper size width detected by the width detection volume 153 is obtained as an analog voltage from 0V to 5V. Then, the control CPU 801 (see FIG. 3) A / D-converts the voltage value, and calculates the paper size group based on the conversion table shown in FIG.

Reference numeral 154 shown in FIG. 5 is a sensor for detecting the presence or absence of a transfer sheet, which is turned on when the transfer sheet is placed on the manual feed tray 152 and turned off when there is no transfer sheet.
It becomes a state. The detection signal indicating this ON / OFF state is
Control CP via the I / O interface circuit 804
It is input to U801.

Next, a paper size designation method for designating the paper size of the transfer paper placed on the manual feed tray 152 will be described.

When the multi-manual feed section 150 is selected by the copy paper selection key 607 (see FIG. 4), a paper size designation request message is displayed on the LCD display 701 (see FIG. 4) as shown in FIG. A sheet size display unit 702 displays the sheet size to be selected. Here, by pressing the cursor key 627, paper sizes are sequentially selected and displayed from a predetermined paper size group. This paper size group includes the width detection volume 15
It is calculated from the paper size width detected in 3.

When the desired paper size is selected, the OK key 628 is pressed to fix the paper size.

Next, the control procedure of this embodiment will be described with reference to the flowchart of FIG.

In FIG. 8, first, copy paper selection key 6
At 07, it is determined whether or not the multi-manual feed unit 150 is selected (step 2001). If the affirmative determination is YES, the manual copy mode is entered.

Next, it is judged whether or not the copy start key 605 is pressed (step 2002). If the affirmative judgment is YES, the manual feed size designation mode is entered (step 200).
3) Then, the size group related to the manual feed width detection volume 153 is sequentially displayed on the LCD display 701 by operating the cursor key 627, and the completion of the manual feed designation by the OK key 628 is awaited (step 2004).

As described above, in the first embodiment, the manual insertion portion 150
Only when is selected and the copy start key 605 is pressed thereafter, the manual feed size is designated.

Next, a control procedure in another embodiment will be described. However, since the configurations described in FIGS. 1 to 7 are the same, the description thereof will be omitted below.

Embodiment 2 FIG. 9 shows a control procedure in the second embodiment.

In FIG. 9, first, copy paper selection key 6
In 07, it is determined whether or not the multi-manual feed unit 150 has been selected (step 2011). If the affirmative determination is YES, the copy mode by manual feed is entered.

Next, when the sensor 154 for detecting whether or not there is paper in the multi-bypass unit 150 detects the presence of paper (step 2012), the manual feed size designation mode is entered (step 2013), and the manual feed width detection volume 153 is set. The related size groups are sequentially displayed on the LCD display 701 by operating the cursor key 627, and the OK key 6
Wait for the end of the manual feed designation by 28 (step 201
4).

In the second embodiment described above, the multi-manual feed unit 1 is used.
The manual feed size is designated only when 50 is selected and it is detected that the transfer paper is present in the manual feed portion.

Embodiment 3 In FIG. 10 showing the third embodiment, first, when the multi-manual feed section 150 is selected with the copy paper selection key 607 (step 2021), the manual feed copy mode is entered.

Next, when the sensor 154 for detecting whether or not there is paper in the multi-manual paper feed unit 150 is detected (step 2022), the manual paper feed size designation mode is entered (step 2023). On the other hand, when there is no paper, the manual feed size designation mode is canceled (step 2024).

Also in the third embodiment, as in the second embodiment, the manual feed size is designated when the multi-manual feed section 150 is selected and it is detected that there is a transfer sheet in the manual feed section. is there.

Embodiment 4 FIG. 11 shows a fourth embodiment. In this embodiment, the output of the sensor 154 (see FIG. 5) for detecting the presence / absence of the transfer sheet is set to C
The PU 801 (see FIG. 3) is constantly monitoring and detects the state transition of the transfer sheet from the presence state to the absence state.

That is, when the multi-manual feed unit 150 is selected (step 2031) and the placement of the transfer paper is detected by the sensor 154 (step 2032),
It is determined whether or not the transfer paper has been pulled out from the manual feed portion (whether or not there is a state transition) (step 203).
3).

If it is determined that there is no state transition, the previously set paper size is validated (step 2034), and entry into the manual feed size designation mode is prohibited. This eliminates the need to newly specify the paper size and saves the operator's trouble.

On the other hand, when the transfer paper is pulled out from the manual feed section 150, the state transition is "present", so the manual feed size designation mode is entered again (step 203).
5).

Embodiment 5 FIG. 12 is a flow chart showing the fifth embodiment.

First, it is determined whether or not the manual feed section 150 has been selected with the copy paper selection key 607 (step 300).
1) When the manual feed section 150 is selected, the manual feed size designation mode is entered (step 3002), and the size group related to the manual feed width detection volume 153 is displayed on the cursor key 627.
Is operated to sequentially display on the LCD display 701, and waits for the end of the manual feed designation by the OK key 628 (step 3003).

After finishing the manual feed size, the reset key 60
It is determined whether 6 has been pressed (step 3005), the size is changed to a predetermined size (for example, A3 size) (step 3006), and the process ends.

Here, as the predetermined size,
A well-known service mode (for example, by pressing a switch (not shown), the back mode is entered and the operation unit 600
It can be specified with the above key).

Sixth Embodiment FIG. 13 is a flow chart showing the sixth embodiment.

First, it is determined whether or not the manual feed section 150 has been selected with the copy paper selection key 607 (step 400).
1) Next, when the sensor 154 for detecting whether or not there is paper in the manual feed section is detected (step 4002), the manual feed size designation mode is entered (step 4003), and the volume 153 for detecting the width of the manual feed paper is entered. By operating the cursor key 627, the size group related to the data of is displayed on the LCD display 701 in sequence, and the OK key 6
Wait for completion of manual feed size designation by 28 (step 4)
004).

After the manual feed size has been designated, it is judged whether or not there is any manual feed paper (step 4005). If it is judged that the paper has run out, the designated size is canceled and the size is changed to the maximum size A3 (step 4006). , The process ends.

Seventh Embodiment FIG. 14 is a flow chart showing the seventh embodiment.

First, it is determined whether or not the manual feed section 150 has been selected with the copy paper selection key 607 (step 500).
1) Next, when the sensor 154 that detects whether or not there is paper in the manual feed unit is detected (step 5002), the manual feed size designation mode is entered (step 5003), and the volume 153 for detecting the width of the manual feed paper is entered. A group of sizes related to can be sequentially operated by operating the cursor key 627.
It is displayed on the D display 701 and waits for the end of the manual feed size designation by the OK key 628 (step 500).
4).

After the manual feed size is designated, the presence or absence of the manual feed paper is judged (step 5005), and when the state transition from the paper present state to the paper no present state is detected, "paper width has changed" is displayed on the LCD display 701. And the like are displayed (step 5006), and the process is terminated.

Embodiment 8 FIG. 15 is a flow chart showing an eighth embodiment.

First, it is judged whether the manual feed section 150 has been selected with the copy paper selection key 607 (step 600).
1) When the manual feed section 150 is selected, the manual feed size designation mode is entered (step 6002), and the size group associated with the manual feed width detection volume 153 (see FIG. 5) is operated by operating the cursor key 627 to successively display the LCD display 701. Is displayed on the screen and waits for the end of the manual feed designation by the OK key 628 (step 6003).

After the designation of the manual feed size is completed, the detection data of the manual feed width detection volume 153 when the size is designated is stored in the volume buffer area of the RAM 803 (step 6004).

Next, waiting for the automatic scaling key 616 to be pressed (step 6005), the automatic scaling key 616 is pressed.
If is pressed, the data stored in the volume buffer is compared with the data detected by the manual feed detection width volume 153 to determine whether the width of the paper has changed (that is, whether the paper regulation guide 151 has been operated). It is determined (step 6006). When it is determined that the width of the sheet has changed, the maximum size according to the data detected by the manual feed width detection volume 153 (for example, the A / D conversion value shown in FIG. In this case, the calculation for automatic scaling is performed (as A3 size) (step 6007).

[0090]

By implementing the present invention, the following special effects can be obtained.

1) Since the paper size designation means is activated when the manual paper feed means is selected and the copy start command is issued by the start command means, the selection means for selecting the paper feed means This eliminates the complexity of operability that a paper size designation request is made each time the manual paper feeding unit is selected (see FIG. 8).

2) Since the paper size designating means is activated when the manual paper feeding means is selected and the paper presence detecting means detects the presence of paper, the operational complexity is the same as in 1) above. Is eliminated (see FIGS. 9 and 10).

3) Further, if the paper of the manual paper feeding means is not set and then removed, the previously set paper size becomes effective, and it becomes unnecessary to specify the paper size. Property is improved (see FIG. 11).

4) By designating the paper size of the copy paper placed on the manual paper feed means and then operating the releasing means, the paper size can be easily returned to the predetermined paper size (FIG. 12). reference).

5) After the paper size is designated by the paper size designating means, when the copy paper placed on the manual paper feeding means changes from the paper present state to the paper non-existing state, the paper size designation means By invalidating the paper size specified in and changing the paper size to a predetermined size (preferably the maximum size that can be set), it is possible to prevent image formation defects and paper jams in advance (Fig. 13).

6) After the paper size is designated by the paper size designating means, when the state transition of the copy paper placed on the manual paper feeding means from the paper present status to the paper empty status is detected, a warning message is displayed on the display means. By displaying
It is possible to notify the operator that the paper size may have been changed after the paper size is determined, prompt the user to re-specify the paper size, and make a mistaken copy due to the difference between the specified paper size and the actually loaded paper size. Alternatively, it is possible to prevent paper jams (see FIG. 14).

7) If the value detected by the paper width detecting means is changed after the paper size is specified by the paper size specifying means, it is possible to recalculate the maximum size according to the detected data, which causes a problem. It is possible to prevent erroneous copy such as a copy (see FIG. 15).

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part in an embodiment of the present invention.

FIG. 2 is a sectional configuration diagram of a copying apparatus to which the present invention is applied.

3 is a block diagram showing a control unit of the copying apparatus main body shown in FIG.

4 is an external view showing an operation panel of the copying apparatus shown in FIG.

FIG. 5 is a configuration diagram of a manual paper feeding unit.

FIG. 6 is a view showing a conversion table for calculating a manual paper sheet group.

FIG. 7 is a diagram showing an LCD screen when a manual feed paper size is designated.

FIG. 8 is a flowchart showing a control procedure in the first embodiment.

FIG. 9 is a flowchart showing a control procedure in the second embodiment.

FIG. 10 is a flowchart showing a control procedure in the third embodiment.

FIG. 11 is a flowchart showing a control procedure in the fourth embodiment.

FIG. 12 is a flowchart showing a control procedure in the fifth embodiment.

FIG. 13 is a flowchart showing a control procedure in the sixth embodiment.

FIG. 14 is a flowchart showing a control procedure in a seventh embodiment.

FIG. 15 is a flowchart showing a control procedure in an eighth embodiment.

[Explanation of symbols]

 100 Copier main body 150 Manual feed section 151 Paper regulation guide 152 Manual feed tray 153 Width detection volume 154 Sensor for detecting the presence of transfer paper 607 Copy paper selection key 627 Cursor key 628 OK key

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B65H 11/00 J 7612-3F

Claims (10)

[Claims] 1. In a copying machine having a manual paper feeding means, a start command means for issuing a command for starting an image forming operation, and a paper for specifying a paper size of a copy paper placed on the manual paper feeding means. When a size designation means, a selection means for selecting one paper feeding means from a plurality of paper feeding means, a manual feed paper feeding means is selected by the selection means, and a start command is issued by the start command means And a control means for activating the paper size designating means. 2. A copying machine having a manual paper feeding means, a paper size designating means for designating a paper size of a copy paper placed on the manual paper feeding means, and one paper feeding means from a plurality of paper feeding means. Selecting means for selecting, paper presence detecting means for detecting the presence or absence of copy paper placed on the manual paper feeding means, the manual paper feeding means is selected by the selecting means, and the paper presence detecting means A copying apparatus comprising: a control unit that activates the paper size designation unit when the presence of paper is detected. 3. The apparatus according to claim 2, further comprising a state transition detection means for detecting a state transition from a paper presence state to a paper absence state by the paper presence / absence detection means, and after the size is designated by the paper size designation means. A copying apparatus comprising: a prohibition unit that prohibits activation of the paper size designation unit when the state transition detection unit detects no state transition. 4. A copying machine having a manual paper feeding means, a paper size designating means for designating a paper size of a copy paper placed on the manual paper feeding means, and a paper size designated by the paper size designating means. And a releasing means for returning the sheet to a predetermined paper size. 5. The copying apparatus according to claim 4, wherein the releasing means has a reset key for returning various set copying modes to a predetermined copying mode. 6. A copying machine having a manual paper feeding means, a paper presence detecting means for detecting the presence or absence of a copy paper placed on the manual paper feeding means, and a copy paper placed on the manual paper feeding means. Paper size designating means for designating the paper size of, and after the paper size is designated by the paper size designating means, when the presence or absence of the paper is detected by the paper presence detecting means, And a control unit that invalidates the paper size designated by the paper size designation unit and changes the paper size to a predetermined size. 7. The copying apparatus according to claim 6, wherein the control unit changes the sheet size to a maximum size that can be set. 8. A copying apparatus having a manual paper feeding means, a paper presence detecting means for detecting the presence or absence of a copy paper placed on the manual paper feeding means, and a copy paper placed on the manual paper feeding means. Paper size designating means for designating the paper size, display means for displaying a message to the operator, and after the paper size is designated by the paper size designating means, the presence / absence detection means determines whether the paper is present or not. A copying machine, comprising: a control means for displaying a warning message on the display means when it is detected that the state has been reached. 9. A copying apparatus having a manual paper feeding means, wherein a paper width detecting means for detecting a paper width of the copying paper placed on the manual paper feeding means, and a copying paper placed on the manual paper feeding means. Paper size specifying means for specifying a paper size, original size data input means for inputting original size data, calculating means for calculating a copy magnification from the original size data and the paper size data, and a paper by the paper size specifying means. When the value detected by the paper width detecting means is changed after the size is designated, the control means for operating the calculating means as if the paper of the maximum size according to the detection data is placed. A copying machine characterized by being provided. 10. The copying apparatus according to claim 9, wherein the paper width detecting means is capable of detecting the minimum sheet size and the maximum sheet size that can be placed.