JPH04363960A - Copying machine - Google Patents

Abstract

PURPOSE:To prevent position deviation of a picture and a tilt by copying a picture of facing pages of original such as a book on both front and rear sides of transfer paper (recording medium) together with the front and rear covers in the order of pages. CONSTITUTION:The machine is provided with a controller 10 controlling the designation of an original picture read area read by a picture read means 6 to an area of a 1/transfer magnification of a recording medium size toward an original scale being a reference position when an original is set while a facing page original key 7 to give a command of copying a facing original to both front and rear sides of the transfer paper is turned off or while the key is turned on and no transfer paper whose one side is formed of a picture is stacked to a double side paper feed means 9, and when the front paper is copied while the original is set along the original scale, the read area for the pages is read at once and when facing pages are copied, the picture for both the pages is read at once to transfer the picture respectively onto both pages of the transfer paper without causing a position deviation respectively. Moreover, the picture is transferred without stacking transfer paper to the double side paper feed means.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine capable of sequentially transferring images of each page of a spread document such as a book onto the front and back sides of transfer paper, which is a recording medium, in page order.

0002

[Prior Art] Conventionally, a copying machine that can copy a two-page spread document like a book, with the document sides on each side of the central binding part, onto the front and back sides of transfer paper in page order, respectively. For example, there is a machine described in Japanese Patent Application Laid-open No. 146255/1983.

This copying machine separates the left and right pages of a spread document and scans them twice using an exposure lamp. By specifying the page, the order of the pages on the transfer paper that is the copied recording medium is not messed up.

0004

[Problems to be Solved by the Invention] However, when copying a book, the conventional copying machine that can copy double-page spreads in page order has the front cover on the first page and the back cover on the last page. If you copy the last page, and each page in the middle is also copied in page order on both sides of each transfer sheet, if the book is left-bound, the back side will be copied at the final copying stage. An inconvenience sometimes occurred when copying the front cover (for right-hand binding, when copying the first front cover).

That is, in order to make a copy in this way, as shown in FIG. 13, the cover of the document D, which is a book, is facing down, and the edge Dc of the document is placed on the contact glass 1 of the copying machine. The original scale 2 is set so as to be in contact with the end 2a of the original scale 2, which is the reference position, and the side to be scanned first is designated as an area near the original scale 2, and copies are made.

Next, as shown in FIG. 14, the original D is set again in a two-page spread state, and this time the area on the side away from the original scale 2 (below the front cover) is scanned. After the first copy operation is performed, the area near the original scale 2 is scanned in the same way as the first scan, and copies are made on both sides of the transfer paper in page order.

In this way, when both the left and right pages of a double-page spread document are copied, when the back cover is finally copied, the order of the scanning area changes according to the document scale as shown in FIG. 2, the document D must be set in a position that is away from the document scale 2 and does not have the setting reference shown in the figure. This increases the setting error and causes the image copied onto the transfer paper to become distorted. There has been a problem in that copying errors are likely to occur, such as misalignment with respect to the normal position or slanting of the image.

This invention was made in view of the above problems, and it is possible to print images of a two-page document such as a book on both the front and back sides of a recording medium such as transfer paper in page order, including the front and back covers. The purpose is to make it possible to copy images without causing any displacement or inclination of the images.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a recording medium size detecting means for detecting the size of a recording medium, a transfer magnification setting means for setting a transfer magnification, and a designated original image. An image reading means for reading image information in the reading area, a storage means for storing the read image information, an image recording means for reading out the image information written in the storage means and transferring it to a recording medium, A double-sided paper feeding means stacks the recording media onto which images have been transferred and refeeds the recording media to form an image on the side on which no image is formed, and a double-sided paper feeding means stacks the recording media to which the images have been transferred and refeeds the recording media to form an image on the side on which the image is not formed. and a two-page spread document key for issuing a command to make copies, and when the two-page spread document key is in an OFF state or in an ON state and no recording medium is stacked in the double-sided paper feeding means, the document image reading area is The copying machine is provided with an original image reading area specifying means for specifying an area of 1/transfer magnification of the recording medium size near the original scale, which serves as a reference position when setting an original.

Furthermore, in the above copying machine, when there is a recording medium in the duplex paper feeding means and a copy start command is issued with the two-page spread original key in the OFF state, the recording medium in the duplex paper feeding means is re-fed. It is preferable to provide means for forming an image on the side on which the image is not formed.

Furthermore, the above-mentioned recording medium size detecting means, transfer magnification setting means, image reading means, storage means, image recording means, double-page original key, and the recording medium having an image transferred on one side are inverted. a double-sided paper feeder that refeeds paper to form an image on the other side, and when the double-sided document key is off or on and there is no recording medium in the double-sided paper feeder, When the image information is not stored in the means, a document image reading area specifying means for specifying the document image reading area to an area of 1/transfer magnification of the recording medium size near the document scale, which is a reference position when setting the document. It is preferable to configure the copying machine by providing the following.

[0012] In the copying machine, image information is stored in the storage means while the double-page document key is in the on state, and then the double-page document key is turned off while some of the image information has not yet been read out. If there is no recording medium in the double-sided paper feeding means when a copying start command is issued, a recording medium with no images formed on both sides is fed, and the last copy is placed on one side when the two-page spread document key is on. Out of all the image information stored in the storage means, the image information in the area that has not yet been read out is read out, an image is formed, and the image is sent to the double-sided paper feeding means, and if there is a recording medium, it is re-fed. After the two-page document key is turned off, the image information stored in the storage means is read out, the image is transferred to the side of the paper on which the image is not formed, and the image is ejected. It is preferable to provide a recording medium selection image processing means that repeats the process until the number of copies is reached.

[0013]

[Operation] According to the copying machine configured as described above, when copying images of a double-page spread document such as a book in page order onto both the front and back sides of a recording medium, including the front and back covers, the double-page spread document is copied first. When the key is turned on and a book is placed with the front cover facing down with one end aligned with the original scale and copying is started, the original image reading area specification means specifies the recording medium size/transfer magnification. An image of the area, that is, a document image reading area close to the document scale equal to the area of the cover of the spread document is specified, the image of that area is read and stored in the storage means, and then it is read out and recorded as an image. The image is transferred onto one side of the recording medium by the means, and then stacked on the double-sided sheet feeding means.

[0014] Next, open the double-page spread you want to copy, align one end of it with the original scale, and start copying. This time, the recording medium is stacked on the double-sided paper feed means, so the above The document image reading area is no longer designated as an area of 1/transfer magnification of the recording medium size.

[0015] Therefore, if the original image reading area is designated as an area for reading both the left and right pages of the spread document at once, the image information of both pages can be read at once. The image information is stored in the storage means, and then the image information is read out in page order, and the first read image information is used to print an image on the side on which the image is not formed on the recording medium re-fed from the double-sided paper feeding means. The image is formed and ejected to a tray, etc. outside the machine, and then an image is formed on one side of the newly fed recording medium on which no image has been formed, based on the image information read out, and the image is stacked on the duplex paper feeding means. can be done.

[0016] In this way, copies are made sequentially with the two-page spreads, and when it finally comes to the stage where the back cover is to be copied, the two-page spread original key is pressed again to turn it off and the back cover is copied. When the document is placed face down with one end aligned with the scale and copying is started, the document image reading area specifying means will scan the image in the specified area of 1/transfer magnification of the recording medium size, that is, the cover of the book. A document image reading area approximately equal to the area is designated again, and only the image in the area close to the document scale is read, and the image of the back cover is copied onto the recording medium based on the image information.

Then, when there is a recording medium in the duplex paper feeding means and a copy start command is issued with the two-page spread document key in the OFF state, the recording medium in the duplex paper feeding means is re-fed and the image is formed. If a means is provided to form an image on the side that is not printed, during the final stage of copying the above-mentioned back cover, a record with an image formed on one side of the paper re-fed from the duplex paper feeding means can be provided. The image of the back cover is transferred to the back side of the medium, and the image is then ejected to a tray or the like outside the machine.

Therefore, when copying a double-page spread document such as a book in page order including the cover, even when copying the last back cover, one end of the document must be aligned with the document scale, which is the reference position when setting the document. Since it can be set and copied, the copied image will not be misaligned with respect to the transfer paper or the image will not be skewed.

Further, a double-sided paper feeding means is provided for re-feeding the recording medium with an image transferred to one side in order to invert the recording medium and form an image on the side on which the image is not formed, and a two-sided document key is provided. When it is in the off state, or when it is in the on state and there is no recording medium in the double-sided paper feeding means and no image information is stored in the storage means, the document image reading area becomes the reference position when setting the document. By providing a document image reading area specifying means that specifies an area equal to 1/transfer magnification of the recording medium size close to the document scale, it is possible to record the image of a two-page spread document including the cover without providing a stack section in the double-sided paper feeding means. Copies can be made in page order on both sides of the media.

In the copying machine, image information is stored in the storage means while the two-page spread document key is in the ON state, and thereafter, the two-page spread document key is in the OFF state while a part of the image information has not yet been read out. When a copy start command is issued and there is no recording medium in the double-sided paper feeder, a recording medium with no images formed on both sides is fed, and if there is, it is fed again and the corresponding images are printed. If a recording medium selection image processing means is provided that repeatedly performs the operation of forming the image up to a specified number of copies, when the two-page spread document key is turned off at the final stage of copying and a copy start command is issued, the image will be recorded on the double-sided paper feeding means. If there is no medium, a recording medium with no images formed on both sides is fed, an image is formed on one side, and the image is reversed and sent to the duplex paper feeding means,
The recording medium is re-fed by the duplex paper feeder without being stacked, the image is transferred to the side on which the image is not formed, and the paper is ejected, so the double-sided document is recorded including the cover. Copies can be made in page order on both sides of the medium.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a control device and related components of a copying machine according to an embodiment of the present invention, and FIG. 2 is an overall configuration diagram showing the entire copying machine. As shown in FIG. 2, this copying machine operates by placing a document D such as a book on the contact glass 1 provided at the top of the copying machine body 11 and pressing the copy start key 3 (FIG. 1). Image reading means 6 for reading image information in the original image reading area
The document surface of the document D is illuminated by the fluorescent lamp 13 , and the light enters the CCD element 14 .

Then, the fluorescent lamp 13 and the mirror unit 15, which also constitutes the image reading means 6, move to the left in FIG. 2, and all the image information on the document surface read by the scanning is stored. stored in means 8 (FIG. 1).

On the other hand, a transfer paper P serving as a recording medium is fed from either the paper feeding cassettes 31, 32 of the selected stage of the paper feeding means 16 or the mass paper feeding device 33, and a sensor (not shown) detects the leading edge of the paper P. When detected on the conveyance path, the image information written in the storage means 8 is read out at a predetermined timing, and laser light is irradiated from the image recording means 17 in accordance with the readout.

The laser beam is focused by a cylinder lens and enters a polygon mirror 18 that rotates and scans.
It enters an fθ lens 19, a mirror 20, and a synchronization mirror for detecting the scanning position of the laser beam. The laser light that does not enter the synchronous mirror is irradiated onto the photoreceptor 21, forming an electrostatic latent image on its surface.

The latent image is made visible by toner when passing through the developing device 29, and the visible image is transferred by the transfer charger 22 to the transfer paper P conveyed to the photoreceptor 21, and the transferred image is The visible image is fixed onto the transfer paper P by the fixing device 23, and is conveyed in the direction of arrow A in FIG. 2 and discharged onto the discharge bin 24.

On the other hand, after the visible image has been transferred to the transfer paper P, the photoreceptor 21 has residual toner on its surface removed by a cleaning device 25 having a cleaning blade.
The removed toner is collected and stored in a toner collection tank.

In addition, during double-sided copying, the transfer paper P placed below the output bin 24 and having an image transferred to one side is stacked, and an image is formed on the side of the transfer paper on which no image is formed. Transfer paper P with an image transferred to one side is stacked on the duplex tray 26 of the duplex paper feeding means 9 which is re-fed for re-feeding. 9, the paper is re-fed in the direction of arrow B in FIG. Stacked on 24.

By the way, as shown in FIG. 1, this copying machine includes a recording medium size detecting means 4 for detecting the size of a transfer paper as a recording medium, a transfer magnification setting means 5 for setting a transfer magnification of a copy, It is provided with a spread document key 7 for issuing a command to copy a spread document such as a book onto both the front and back sides of transfer paper.

Further, in this copying machine, when the two-page document key 7 is in the OFF state or in the ON state, the double-sided paper feeding means 9 is activated.
When the transfer paper P is not stacked, the document image reading area read by the image reading means 6 is set to a record near the document scale 2 (see also FIG. 4), which is the reference position when setting the document D shown in FIG. A control device 10 is provided that also performs control to designate an area of 1/transfer magnification of the medium size. When there is transfer paper in the duplex paper feeder 9 and a copy start command is issued with the two-page spread original key 7 in the off state, the control device 10 refeeds the transfer paper in the duplex paper feeder 9. Control is also performed to form an image on the side on which the image is not formed.

That is, in this embodiment, when the control device 10 issues a copy start command when there is transfer paper in the original image reading area specifying means and the double-sided paper feeding means and the double-sided document key is in the OFF state, the control device 10 starts the double-sided feeding. It functions as a means for refeeding the transfer paper in the paper means and forming an image on the side on which no image is formed.

It should be noted that when the double-page document key 7 is in the ON state, the document image reading area read by the image reading means 6 changes from the position of the document scale 2 to the double-page document D.
(document image reading area Aa+Ba in FIG. 3).

When copying a double-page document D such as the book shown in FIG. 2, this copying machine uses a double-page document key 7 (FIG. ) and place the original D with the front cover facing down on the contact glass 1 as shown in FIG. Match part 2a.

[0033] In this state, press the copy start key 3 (Fig. 1).
When you press , the document image reading area specified in the area of 1/transfer magnification of the transfer paper (recording medium) size, that is, for example, if the transfer magnification is specified as 1x (same size), the transfer paper size Since the document image reading area Aa near document scale 2 shown in FIG. 3, which corresponds to the area of The image information is read out and transferred to the transfer paper P.
is recorded (transferred) on one side of the paper and stacked on the duplex tray 26 of the duplex paper feeding means 9.

Next, as shown in FIG. 14, when the copy start key 3 is pressed again after setting the original D in a double-page spread state with the pages to be copied on the contact glass 1, the double-page spread original key 7 is pressed again. While it is turned on, image information for a two-page spread (two pages of transfer paper P) is read by the CCD element 14 in one scan, and the image information is stored in the storage means 8.

[0035] Then, since the transfer paper P on which an image has already been transferred to only one side (the cover image has been transferred) is stacked in the double-sided paper feeding means 9, the image on the transfer paper P is formed. The transfer paper is re-fed in order to transfer the image of the page located away from the original scale 2 in FIG. 14 (the image of one sheet of transfer paper on the back side of the cover) to the side that is not covered.

The transfer paper P, on which the image has been transferred to the back side in this way, is ejected in the direction of arrow A in FIG. When the first transfer paper P is fed, the image information on the side of the original image reading area Aa in FIG. The image is transferred onto one side of the paper, and when the transfer is completed, the transferred paper is stacked on the duplex tray 26 of the duplex paper feeding means 9.

[0037] In this copying machine, after the scanning of the document D in the double-page spread state is completed, the next scanning operation and the next paper feeding will not be performed until the next time the copy start key is pressed. During this time, the next page to be copied can be set without haste, so there is no need to rush and set the document side of the opened page diagonally.

When the copy start key is pressed when the resetting is completed, if the second sheet of transfer paper P is already stacked in the double-sided paper feeding means 9, the transfer paper P will be immediately stacked, or even if it is still in the stacking operation. For example, immediately after that operation is completed, a reservation mode is entered in which the copy operation of the reset double-page spread portion is started.

In this way, by repeating the original setting work and the copying operation, double-sided copies are sequentially obtained, and when the final back cover is copied, the back side is copied as shown in FIG. Set the document on the contact glass 1 with the cover facing downward and one edge Db aligned with the edge 2a of the document scale 2, and in this state press the double-page document key 7 again to cancel the double-page spread mode. .

[0040] Then, when you press the copy start key 3,
The transfer paper P stacked in the double-sided paper feeding means 9 is fed again, the image of the back cover is transferred to the side on which no image is formed, and it is stacked on the ejection bin 24. .

If it is not necessary to copy the back cover, the document D may be removed from the contact glass 1, the pressure plate 28 shown in FIG. 2 may be closed, and the copy may be made in that state. As described above, according to this embodiment, even when the back cover is copied last, one end edge Db of the back cover is aligned with the edge 2 of the document scale 2, as shown in FIG.
Since a copy can be made by setting the image on the contact glass 1 in a state where the image is aligned with the image a, it is possible to obtain a copy without misalignment of the image with respect to the transfer paper.

In other words, when copying including the back cover of a book, as explained in FIGS. 13 to 15, when setting the original at the final stage, original D is set at original scale 2. Since the copy had to be set at the position shown in FIG. 15, which is far from the edge 2a which is the reference position, the setting error increases as the setting position moves away from the original scale 2, so the copied image Although it was easy for the image to be misaligned with respect to the transfer paper or the image to be tilted, this embodiment eliminates such problems.

In this way, this copying machine uses the original image reading area as the document image reading area when the double-page document key 7 is in the OFF state, or when the double-sided document key 7 is in the ON state and no transfer paper is stacked in the double-sided paper feed means 9. Since the reference position when setting is specified in the area of 1/transfer magnification of the transfer paper size near the original scale 2, even when copying the back cover of a double-page spread original, the original is placed at the edge of the original scale 2. Part 2
Even when copying is performed with the copying paper set in the same state as shown in FIG. The series of controls are all performed by the control device 10 shown in FIG.
carried out by.

The control device 10 includes a central processing unit (CPU) having various judgment and processing functions, a signal from the two-page document key 7, and a duplex tray 26 (FIG. 2) of the duplex paper feeding means 9.
RO that stores programs and fixed data for each process, including the program necessary to specify the document image reading area based on the signal output depending on the presence or absence of transfer paper in )
M, and RAM, which is a data memory that stores processing data.
, a microcomputer consisting of an input/output circuit (I/O), and storage means 8, which will be described later.

The storage means 8, as shown in FIG.
3, a main scanning address management circuit 51 that counts clocks CLK for each pixel of image information based on the address data from 3 and manages addresses in the main scanning direction, and a sub-scanning address management circuit 52 that manages addresses in the sub-scanning direction. , bitmap storage circuit whose address is managed by them (
It is a bitmap type storage means consisting of RAM) 50, which inputs write video data WVD and sequentially writes it to designated addresses.

Reference numeral 54 denotes a synchronization signal switching circuit for switching write/read W/R and synchronization signal Lsync. Then, this control device 10 receives a signal output from the copy start key 3 shown in FIG. A size signal output according to the size of the transfer paper stored in the paper feed cassette is read from the transfer magnification setting means 5, a transfer magnification signal input by the operator using an operation key is read from the image reading means 6. The image information signal is output from the double-sided document key 7 when the key is pressed, and the double-sided paper feed means 9 outputs a signal depending on the presence or absence of transfer paper in the double-sided tray 26. Various detection signals and the like are inputted from other various sensors.

Then, the document image reading area for the image reading means 6 is set to the document image reading area Aa or Aa+Ba in FIG.
The image recording means 17 sends a signal for specifying one of the
A signal for transferring (recording) an image onto a transfer paper is sent to the paper feeder 16, a paper feed signal is sent to the paper feeder 16 for feeding a transfer paper on which no image is formed, and a paper feed signal is sent to the paper feeder 16 to feed a transfer paper on which no image is formed. For transfer paper with an image transferred to one side, transfer it to the double-sided tray 2.
It outputs various drive signals for stacking the sheets in the copying machine 6 and refeeding them, and also outputs various drive signals for driving other drive systems of the copying machine.

FIGS. 6 to 8 are flowcharts relating to copy operation processing executed by the control device 10. Control device 1
0, when the routine shown in FIG. 6 starts, first, in step 1, the original D is set on the contact glass 1, the copy start key 3 is pressed, and it is determined whether or not it is turned on. If it is not turned on, just wait and when it is turned on, proceed to step 2.

In step 2, it is determined whether or not there is transfer paper P on the duplex tray 26 of the duplex paper feeding means 9.
At the time of initial paper feeding, there is no transfer paper there regardless of the selection mode, so proceed to step 3 in FIG. The image information is read and stored in the storage means 8.

Then, in step 4, the paper feeding means 1 of FIG.
6, the feeding of the first sheet of transfer paper P is started, and in step 5, the image information of the document image reading area Aa stored in the storage means 8 in the previous step 3 is called up, and an image is printed on one side of the transfer paper P. Transfer the image, and determine whether the single-sided mode is selected in step 6. If so (decision of YES)
Proceed to step 7 and eject the transfer paper P on which the image has been transferred onto the output bin 24 outside the machine to finish processing the first sheet.If a mode other than single-sided mode is selected, proceed to step 8 and transfer the image. The paper P is stacked on the double-sided paper feeding means 9 and the process returns to step 1 in FIG.

In step 1, when it is determined that the next original has been set and the copy start key 3 has been pressed again, the process proceeds to step 2. If the single-sided mode is selected, the duplex paper feeding means 9 Since the transfer paper P is not stacked in the double-sided paper feeding means 9, the process proceeds to step 3 in FIG. Proceed to 9.

Then, it is determined whether or not the double-page spread document key 7 is pressed and turned on. If the document is a double-page document like a book, it is pressed and step 1 is executed.
0, but if it is not a double-page document like a normal document, it is not pressed (NO), so proceed to step 11 in FIG. 8, and read the reading area A near document scale 2.
a (see FIG. 3) is read and its image information is stored in the storage means 8.

Next, in step 12, re-feeding of the transfer paper P stacked on the duplex tray 26 of the duplex paper feeding means 9 and having an image transferred to one side is started, and in step 13, the previous step 11 is started. In step 14, the image information of the document image reading area Aa stored in the storage means 8 is called up, and the image is transferred to the side of the re-fed transfer paper P on which the image is not formed. 24, and the image forming process on the first sheet of transfer paper is completed.

On the other hand, if the two-page spread original key 7 is pressed in step 9 of FIG. D is set in a double-page spread state so that the original surface is in contact with the contact glass 1, so the image information of the original image reading area "Aa + Ba" (area of two sheets of transfer paper) shown in Fig. 3 is scanned at once. image information is stored in the storage means 8.

Next, in step 15, re-feeding of the transfer paper P stacked in the double-sided paper feeding means 9 and on which an image has already been transferred on only one side is started, and in step 16, the transfer paper P that has been stored in the previous step 10 is started. The document image reading area Ba that is farther from the original scale 2 of the original image reading area "Aa+Ba" stored in the means 8 is called, and an image is printed on the side of the re-fed transfer paper P on which the image is not formed. is transferred to the output bin 24 in step 17.

[0056] Then, in step 18, the two-page spread original key 7 is pressed.
It is judged again whether or not it is pressed and turned on, and if it is not turned on, the process ends, and if it is turned on, the next copy continues with the two-page spread state, so as shown in Figure 7 above. Repeat the processes and judgments from step 4 onward shown in step 4 → 5 → 6 → 8 (flow in double-page spread mode)
→ 1 → 2 → 9 and when the double-page spread document key 7 is no longer on, the stage is either to copy the last back cover (original set state shown in Figure 4) or to finish copying on one side of the double-page document. Therefore, proceed to step 11 in Figure 8,
Only the document image reading area Aa corresponding to the image of the back cover or the final copy page is read and the image information is stored in the storage means 8, and in step 12, the transfer paper P is re-fed from the double-sided paper feed means 9. In the next step 13, the image is transferred to the side of the transfer paper P on which the image is not formed based on the image information, and in the next step 14, the image is transferred to the ejection bin 2.
4 and completes all image forming processing.

Note that some users may open the back cover of the document D, which is a book, with the double-page document key 7 turned on.
Set the document at a position away from the document scale 2 shown in FIG. 15 (corresponding to the document image reading area Ba in FIG. 3), press the copy start key 3, and immediately press the double-page document key 7 again to enter the double-page spread mode. It is also possible to cancel the .

Even in such a case, in this embodiment, as shown in the flowchart of FIG.
In step 8, it is checked again whether the two-page spread document key 7 is on, so in such a case, step 1
Since the process ends when it is determined that the two-page spread mode has been canceled at step 8 (NO), there is no possibility that a new copy of transfer paper will be fed after copying the last page (back cover). .

Further, while pressing and holding the double-page spread document key 7 of the above-mentioned two-page spread document, when copying the last back cover, move the document D to the side of the area away from the document scale 2 as shown in FIG. Even if copying is started in this state, according to this embodiment, the image of the cover on the back side can be transferred to the back side of the transfer paper.

However, in this case, after the image on the back cover is transferred to the back side of the transfer paper stacked in the duplex paper feeder 9, no originals near the original scale 2 are set. The image on the side of the document image reading area Aa is also recorded on the newly fed transfer paper P from the paper feeding means 16, and is transferred to the double-sided tray 26 of the double-sided paper feeding means 9.
Normally, in the final stage of copying the back cover, it is preferable to press the two-page spread original key to cancel the two-page spread mode.

[0061] In the above embodiment, a case was explained in which the original D, which is a book that opens on the left, is copied, but even if the book that is the original is a book that opens on the right, you can simply change the orientation in which it is set. Since the original can be set on the side of the original scale 2 and copied, it is possible to similarly perform copying without causing a setting error.

FIG. 9 is a schematic diagram showing an embodiment of a copying machine in which the duplex paper feeding means is not provided with a stacking section for stacking transfer sheets. This copying machine differs from the copying machine in FIG. Not provided.

This copying machine is the same as the embodiment shown in FIG. 1, so its illustration is omitted, but it includes a recording medium size detection means for detecting the size of the transfer paper (recording medium) explained in FIG. 4, a transfer magnification setting means 5 for setting a transfer magnification, an image reading means 6 for reading image information of a designated document image reading area, a storage means 8 for storing the read image information, and a storage means 8 for storing the read image information. An image recording means 17 (see FIGS. 1 and 2 as necessary) reads image information written on the paper and transfers it onto the transfer paper P, and a reversing device 61 transfers the transfer paper P with the image transferred onto one side. double-sided sheet feeding means 6 without a stacking section for refeeding the transfer paper P to form an image on the side on which no image is formed;
9, and a double-page document key 7 for issuing a command to copy the image of the double-page document D onto both the front and back sides of the transfer paper P.

[0064] Further, in this copying machine, when the spread original key 7 is in the OFF state, or when it is in the ON state and there is no transfer paper in the double-sided paper feed means 69 and no image information is stored in the storage means 8, , set the document image reading area to the position near document scale 2, which is the reference position when setting document D.
A control device 70 is provided which functions as a document image reading area specifying means that also performs control to specify an area of 1/transfer magnification of recording medium size.

This control device 70 includes a central processing unit (CPU), ROM, and R
It is a microcomputer consisting of an AM and an input/output circuit (I/O), and is equipped with a storage means 8.

The control device 70 stores the image information in the storage means 8 while the double-page spread document key 7 is in the ON state, and then stores the image information in the storage means 8 while the double-page document key 7 is in the on state, and then stores the image information in the double-page document key 7 while a part of the image information has not yet been read out. is turned off and a copy start command is issued, if there is no transfer paper P in the double-sided paper feeding means 69, transfer paper P on which images are not formed on both sides is transferred to the paper feeding cassettes 31, 32 or the bulk paper feeder. A sheet is fed from one of the devices 33, and when the double-page document key 7 is in the ON state, the image information of the area that has not yet been read out of all the image information that was last stored in the storage means 8 is read out. control to form an image and send it to the double-sided paper feeding means 69.

At this time, if there is transfer paper P in the double-sided paper feeding means 69 (detected by the sensor 65), it is fed again and the two-page document key 7 is placed on the side on which the image is not formed. After turning off, the image information stored in the storage means 8 is read out, the image is transferred and ejected, and this operation is controlled to be repeated up to the specified number of copies.

Next, use this copying machine to copy both the front and back covers and facing pages of the manuscript, which is a book, and transfer the images onto both sides of two sheets of transfer paper in page order. A specific example of copying five copies will be explained. Here, Figure 1
0, for example, the length of the conveyance path (length of one loop) in the paper refeed path 62 of the copying machine is determined by considering the image formation timing and reversal timing of the transfer paper P of the size to be used. , is set to a length that allows three sheets to be conveyed simultaneously within the path.

First, as shown in the first step of FIG. 12, a document D (book) is placed on the contact glass 1 along the document scale 2 with the front cover facing down, and a two-page document is created. When the key 7 (FIG. 9) is turned on and the copy start key is pressed, the image on the cover is read by the image reading means 6 (see FIG. 2) and the image information is stored in the storage means 8.

At this time, in the original image reading area, since there is no transfer paper in the double-sided paper feeding means 69 and no image information has been stored in the storage means 8 yet, the area for reading the original image is "transfer paper (recording medium)". The area Aa (see also FIG. 3) is designated as "1/transfer magnification of size". Note that in this first step, even if the copy start key is pressed, only the image is read and the transfer paper is not fed.

Then, in the next second step, open the page to be copied, set it on the contact glass 1, and press the copy start key again, and the image will be read again and the image information will be stored in the storage means 8. . At this time, in the document image reading area, although there is no transfer paper in the double-sided paper feeding means 69 as in the first step, the image information corresponding to the front cover stored in the storage means 8 in the first step is is stored, so it is designated as an area for both the left and right pages of the Aa+Ba double-page spread document D.

In this second step, in addition to the image reading, the feeding of the transfer paper P is performed using the paper feeding cassette 31 shown in FIG.
The image formed on the photoreceptor 21 is transferred to one side of the large paper feeder 33, and the paper is fed continuously at a predetermined interval to transfer three sheets (P
1 to P3) are carried out.

Then, the first sheet of transfer paper P1, on which the image has been transferred to one side, is reversed by the reversing device 61 and is transported without being stacked, is detected by the sensor 65 of the double-sided paper feeding means 69. The photoconductor 21 is then further conveyed and reaches the position of the photoreceptor 21 again for the second image formation, where the image of the area Ba of the second page shown in the second step in FIG. 12 is transferred, and 2, Third sheet of transfer paper P2
, P3 are transferred in the same manner, and are discharged outside the machine with images formed on both sides.

When the image is transferred to the back side of the third sheet of transfer paper P3, as shown in FIG.
is being fed, and when the transfer paper P4 reaches the position of the photoreceptor 21, the cover image stored in the first step is transferred again, and is also transferred to the subsequently fed fifth transfer paper P5. The image is transferred in the same way, and then it is reversed in the same way as the first to third transfer sheets P1 to P3, and the image of the area Ba stored in the second step is formed on the back side. It is ejected outside the aircraft.

Next, in the third step of FIG. 12, the back cover of the original is set on the contact glass 1, the two-page spread original key 7 is turned off and released, and the copy start key is pressed again. The image is read. At this time, the document image reading area becomes an area Aa of "transfer paper (recording medium) size 1/transfer magnification" because the double-page document key 7 is in the OFF state.

At this time, since the transfer paper P has already been discharged to the double-sided paper feeding means 69, turning on the copy start key causes the first to third copies on which no images are formed on both sides to be copied. Transfer paper P6 to P8 is first fed, and on one side of the paper there is a document image reading area A that has not yet been read out of the images read in the second step.
After reading the image information on the a side and sequentially transferring the images, in the second cycle, the image corresponding to the back cover read in the third step is transferred to the back side, and it is ejected outside the machine, and the same is done. Transfer paper P9 to P1, which will be the remaining 4th to 5th copies.
0 is then fed, subjected to similar image processing, and then ejected.

In this way, even if the duplex paper feeding means 69 is not provided with a stack section, even if the back cover is to be copied last as in the copying machine shown in FIG. 2, one edge of the back cover can be Matched to the edge of the original scale (see Figure 4)
Since it is possible to set it on a contact glass and make a copy, it is possible to obtain a copy without misalignment of the image with respect to the transfer paper.

Furthermore, as in this embodiment, the double-sided paper feeding means 6
If a stack unit 9 for stacking transfer sheets is not provided, a large-volume paper feed device 33 (which may be a paper feed cassette) is provided below the double-sided paper feed means 69 as shown in FIG. Therefore, the number of transfer sheets that can be stored on the tray can be increased accordingly. Furthermore, since the transfer sheets are not aligned by a jogger in the stack section and then re-fed, the possibility of jamming is reduced and the reliability in transporting the transfer sheets is improved.

[0079] Even if it is a two-page spread manuscript like a book,
Start copying with the two-page spread as shown in the second step of FIG. 12 without copying the cover, and finally press the two-page spread document key 7.
There is also a case where the page is turned off and only the page on the side of area Aa, for example, in the spread state (the pages are different) is copied and the process is completed.

In this case, at the final stage of copying, all the image information on both the left and right pages of the original that was stored in the storage means 8 while the double-page original key 7 was on in the previous process is read out. Therefore, on one side of the transfer paper P that is fed from the paper feeder 16 and on which no image is formed, there is an image ( The image on the area Aa side) is transferred and is discharged as is from the machine.

[0081]

[Effects of the Invention] As explained above, according to the present invention, the following effects can be achieved. According to the invention of claim 1, even when it is desired to copy images of a two-page spread document such as a book in page order on both sides of a recording medium, including the front and back covers, the document is always set so as to align with the document scale. Since the image can be copied in a fixed manner, the image transferred to the recording medium will not be misaligned or tilted.

According to the invention of claim 2, when it is desired to finish copying on one side of a double-page spread document or to finish copying on the back cover, even if the double-page spread document key is turned off at the final stage of copying, , the image of the original document is not recorded on a new recording medium, but is transferred to the side of the recording medium fed from the duplex paper feeding means on which the image is not transferred, so the image is transferred to both sides. Recording media can be arranged in page order.

According to the third aspect of the invention, images of a two-page spread document such as a book can be copied in page order on both the front and back sides of the recording medium, including the front and back covers, without providing a stacking section in the double-sided paper feeding means. can do. At that time, the original can be copied while always being set along the original scale, so that the image transferred to the recording medium will not be misaligned or tilted. Furthermore, since there is no stack section, space can be used more effectively.

According to the invention of claim 4, when the double-sided paper feeding means is not provided with a stacking section, when it is desired to finish copying on one side of a two-page spread document or to finish copying on the back cover, the copying operation can be performed. Even if the double-page document key is turned off at the final stage, the image of that document will not be recorded on a new recording medium, but will be printed on the side of the recording medium fed from the duplex paper feeder to which the image has not been transferred. The pages are transferred to the page and then ejected, so they are arranged in the order of the pages.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a control device for a copying machine and its related configuration according to the present invention.

FIG. 2 is an overall configuration diagram showing the entire copying machine.

FIG. 3 is a plan view showing document image reading areas Aa and Ba of a double-page document set in the copying machine.

4 is a perspective view showing a document setting position when copying the back cover of a book in the copying machine shown in FIG. 2; FIG.

FIG. 5 is a block diagram showing the configuration of storage means 8 in FIG. 1 and its related configurations.

6 is a flow diagram showing steps 1 to 18 of copying operation processing executed by the control device 10 of FIG. 1. FIG.

FIG. 7 is a flow diagram showing steps 3 to 7 of the copying operation process.

FIG. 8 is a flowchart showing steps 11 to 14 of the copying operation process.

FIG. 9 is a schematic diagram showing an embodiment of a copying machine in which a stacking section is not provided in the double-sided paper feeding means.

FIG. 10 is an explanatory diagram showing a state in which three sheets of transfer paper are simultaneously conveyed on a conveyance path within the copying machine.

FIG. 11 is an explanatory diagram showing how a fourth sheet of transfer paper is fed while an image is being transferred to the back side of the third sheet of transfer paper in the same conveyance path.

FIG. 12 is an explanatory diagram showing step-by-step the setting state of a document when copying a spread document in page order including the front and back covers.

FIG. 13 is a perspective view showing a state in which the front cover is set when a conventional copying machine copies each page of a double-page document onto the front and back sides of transfer paper in page order.

FIG. 14 is a perspective view showing the document set in a two-page spread state.

FIG. 15 is a perspective view showing a state in which the back cover of the document is set at a position away from the document scale.

[Explanation of symbols]

1 Contact glass
2 Original scale 4 Recording medium size detection means 5
Transfer magnification setting means 6 Image reading means
7 Double-page spread original key 8 Storage means
9, 69 Double-sided paper feeding means 10, 70 Control device
16 Paper feeding means 17 Image recording means
D Original P Transfer paper (
Recording medium) Aa, Ba
Original image reading area

Claims (4)

[Claims] Claim 1: Recording medium size detection means for detecting the size of a recording medium, transfer magnification setting means for setting a transfer magnification, image reading means for reading image information in a designated document image reading area, and A storage means for storing image information, an image recording means for reading out the image information written in the storage means and transferring it to the recording medium, and a recording medium having an image transferred to one side thereof stacked together. A double-sided paper feeding means for refeeding the paper to form an image on the side on which no image is formed, and a spread original key for issuing a command to copy the spread original on both the front and back sides of the recording medium. , when the two-page spread original key is in the OFF state, or when the double-sided document key is in the ON state and no recording medium is stacked on the double-sided paper feeding means, the original image reading area is set close to the original scale, which is the reference position when setting the original. A copying machine characterized in that a copying machine is provided with a document image reading area specifying means for specifying an area of 1/transfer magnification of the recording medium size. 2. In the copying machine according to claim 1, when there is a recording medium in the double-sided paper feeding means and a copy start command is issued with the two-page spread original key in the OFF state, the recording medium in the double-sided paper feeding means is A copying machine characterized by being provided with means for refeeding a medium and forming an image on the side on which no image is formed. 3. Recording medium size detection means for detecting the size of the recording medium, transfer magnification setting means for setting the transfer magnification, image reading means for reading image information in a designated document image reading area, and a storage means for storing image information; an image recording means for reading out the image information written in the storage means and transferring it to the recording medium; A double-sided paper feeding means for refeeding paper to form an image on the side on which no image is formed, and a spread original key for issuing a command to copy a spread original on both the front and back sides of a recording medium,
When the two-page spread document key is in an OFF state, or when it is in an ON state and there is no recording medium in the double-sided paper feeding device and no image information is stored in the storage device, a document is set in the document image reading area. 1. A copying machine comprising a document image reading area specifying means for specifying an area of 1/transfer magnification of the recording medium size near the document scale, which serves as a reference position for copying. 4. The copying machine according to claim 3, wherein image information is stored in the storage means while the double-page document key is in an ON state, and after that, the image information is stored in the storage means while a part of the image information has not yet been read out. When the two-page spread original key is turned off and a copy start command is issued, if there is no recording medium in the double-sided paper feeding means, a recording medium with no images formed on both sides is fed and the two-page spread is printed on one side of the recording medium. When the original key is on, the image information of the area that has not been read out among all the image information stored in the storage means is read out to form an image, and the image is sent to the double-sided paper feeding means and recorded. If there is a medium, refeed it and transfer the image to the side on which the image is not formed by reading the image information stored in the storage means after the double-page document key is turned off. What is claimed is: 1. A copying machine characterized by being provided with a recording medium selection image processing means for ejecting a recording medium, and repeating this operation until a specified number of copies are made.