JPH0486840A - Image forming device - Google Patents

Abstract

PURPOSE:To form a copied book in an open state same as the book original of plural pages by optically scanning one of the bisected original independently and switching the carrying path of a paper with respect to the divided surface. CONSTITUTION:The optical system of a copying machine main body 1 is divided to a front side part A and a rear side part B. In the case of copying the book original 73 of ten pages, which is bound at the back, a 1st page is set on an original platen 2 first, and the paper P1 is fed and sent to a stack part after the 1st page is copied on the front side. Next, the paper P2 is fed and a 2nd page is copied by optically scanning on the rear side. The paper P2 on which the 2nd page has been already copied is sent to the stack part. Next, a 3rd page is copied on the paper P2 sent to the stack part by the scanning on the front side, and then a 4th page is copied on the paper P3. Thus, 1st and 10th pages are copied on the one side of the paper P1 and 2nd, 3rd, 8th and 9th pages, and 4th, 5th, 6th and 7th pages are copied on both sides of the papers P2 and P3, respectively. The papers are overlapped, folded and bound in center.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an image forming apparatus suitable for copying original documents such as spine-bound books.

(Prior Art) When copying a spine-bound original such as a book using an image forming device such as an electronic copying machine, conventionally one of three methods has been used. The original is placed open on the original table and two pages are copied onto one sheet of paper.

The second method is to print one on each side of a one-page-sized sheet of paper.
Make copies page by page.

The third method is to remove the binding portion of the original document and copy it onto one or both sides of a sheet of paper the size of one page.

(Problem to be Solved by the Invention) However, according to the first method of the above conventional techniques,
When spine-stitching is performed in the same double-page spread format as the original document, two blank pages are generated for every two pages because the back side of the copied page is blank. Also! Since a certain amount of area is required for the binding portion, it becomes difficult to see the document image on the binding side.

Further, the second method also has the same problems as the first method.

Furthermore, according to the third method, there is a problem in that it takes time and effort to disassemble the original manuscript.

The present invention has been made in view of the above points, and it is possible to perform bookbinding without creating blank pages between pages in the same spread state as the original manuscript, and even when spine binding is performed, the binding side part of the original manuscript can be bound. An object of the present invention is to provide an image forming apparatus that allows images to be easily viewed.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a means for optically scanning a document placed on a document table to form an image of the document on a sheet of paper; means for supplying the paper to the forming means; storage means for temporarily storing the paper on which the image has been formed by selecting the front and back sides thereof and feeding the paper again to the image forming means; and means for discharging the paper after copying has been completed. , a means for switching the conveyance path of the paper! And,
The document is divided into two parts in the optical scanning direction, and selection means for independently optically scanning at least one of the two parts is provided, and the paper is transported in accordance with the divided surface of the original document to be optically scanned. It is characterized by being able to switch roads.

(Operation) According to the above configuration, when a plurality of pages of a main document are sequentially copied and bound as a copy book with the same page order as the main document, a sheet of paper of the same size as the spread document is sent from the paper supply means to the image forming means. The selecting means selects one or both of the divided documents in a predetermined order and optically scans them, and the image forming means forms a document image at a predetermined position on the paper. The paper on which the copied image has been formed is selected to be either front or back and is again fed to the image forming means to form another original image at another predetermined position on the paper. By sequentially performing the above operations on a plurality of sheets of paper, stacking them in a predetermined order, and performing spine binding, a copy book with the same double-page spread as the original document can be obtained.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a sectional view showing the overall configuration of an electronic copying machine to which the present invention is applied, and FIG. 3 is a perspective view of the same external appearance.

The electronic copying machine shown in the figure includes a copying machine main body 1, which is an image forming means, on which a document table 2 made of transparent glass is fixed.
A paper feed cassette 3, which is removably loaded in the upper and lower parts of the main body 1 and protrudes from the upper and lower parts, serves as upper and lower paper supply means.
4.5, and a paper discharge tray 6 which is a paper discharge means and is provided protruding from the paper discharge end of the @ side of the main body 1.

Inside the main body 1, there are an exposure lamp 7 and mirrors 8, 9, 10 that move back and forth in the direction of arrow a along the lower surface of the document table 2.
a photoreceptor drum 13 that forms an image of the light reflected by the exposure scanning of the optical system through a variable magnification lens block 11 and a mirror 12; and an electrostatic latent image formed on the surface of the photoreceptor drum 13. A developing device 14 that attaches toner to make a visible image and a delivery roller mechanism 15. t or 16 and guideway 1
7 or 18 to transfer charger 20 and peeling charger 21, and transfer the toner image via resist roller pair 22 which brings it into close contact with the surface of photoreceptor drum 13, and transfer charger 20, and peeling charger 20. a conveyor belt 23 that conveys the copy paper P separated from the drum 13 by the charger 21;
A fixing roller pair 24 that is provided at the end of the conveyor belt 23 and fixes the toner image onto the copy paper P, and a fixing roller pair 2
4, the copy paper P is discharged onto the tray 6 through the pair of rollers 25.

Further, on the peripheral edge of the photoreceptor drum 13, a charger 26 for removing electricity is provided along the rotational direction to remove electricity from the drum 13 after transfer.
A cleaner 27 removes the toner adhering to the surface of the drum 13 after static electricity has been removed, a static elimination lamp 28 erases the residual image on the drum 13, and the surface of the photosensitive drum 13 is charged to form an electrostatic latent image during exposure. Charger 2 for imaging
9 is placed 2.

Furthermore, there is a cooling fan 30 in the main body 1 to prevent temperature rise, and a cooling fan 30 located at the insertion tip of the cassette 4.5.
A cassette size detector 31, 32 consisting of a plurality of microswitch groups for detecting the cassette size is provided.

Further, at the lower part of the entrance side of the paper ejection tray 6, there is provided a transport path 41 that guides the paper P on which a copy image is formed to a stack section 40, which is a storage means. is provided. The conveyance path 41 has a pair of rollers 4
The transport path 43 and 44 are branched on the downstream side of the transport path 2, and a switching gate 45 serving as a transport path switching means is provided at the branch point. The transport paths 43, 44 are connected to both ends of the stack section 40, and roller pairs 46, 47, 48, 49 are provided at each end. Furthermore, the stack section is connected to the guide path 18 via a pair of rollers 50. Note that the reference numeral 51 in the figure is a switching gate that guides the paper P on which an image is formed to either the paper discharge tray 6 or the conveyance path 41.

FIG. 1 is a front view showing a control panel (hereinafter referred to as a control panel) 60 according to a first embodiment of the present invention.

On the control panel 60, a copy key 61, a clear key 62, a numeric keypad 63, a paper size specification key 64, an original size specification key 65, a cassette selection key 66, and a magnification change key 67 are arranged in order from the right side of the figure. At the top is a numerical tube 6 that displays the input number of copies, magnification, etc.
8 is provided. The control panel 60 is provided on the upper front surface of the copying machine main body 1, as shown in FIG.

On the other hand, in the copying machine main body 1 according to this embodiment, the optical system for performing light scanning is divided into a front part A and a rear part B in the scanning direction, as shown in FIG. scanning only, scanning only rear part B, and image part A
, B can be scanned entirely. As means for selecting the scanning range, a front key 69 is provided at the left end of the control panel 60.
A rear key 70 and both side keys 71 are provided. Reference numeral 72 is a setting key for setting the selection mode, and reference numeral 73 shown in FIG. 3 is a main document placed on the document table 2.

Next, the flowchart shown in Fig. 4 and Figs. 5 to 13
The operation of the first embodiment will be explained with reference to the drawings.In this embodiment, a case will be described in which a 10-page main document 73 that is spine-stitched is to be copied as shown in FIG. 14(a).

First, in step 101, the setting key 72 is used to set a selection mode in which a document is divided into two parts, selected, and copied, and a copying operation is started.

Next, in step 102, it is determined whether or not it is necessary to copy the cover, and if necessary, in step 103, the cover is set on the document table 2 and the copy key 61 is turned on.Next, in step 104, specified cassette,
For example, feed paper from the cassette 4 and press both sides keys 71 to O.
By setting N, the cover is copied on one side of the paper P1 in step 105. Then, in step 106, the copied paper PI passes through the switching gate 51 and the transport path 4.
1. The paper passes through the switching gate 45 and the transport path 43 and is sent to the stacking section 40 with the copied side facing upward.

Next, in step 107, the first page of the original document 73 is set on the document table 2, and the front key 69 and the copy key 61 are pressed.
is turned on, and in step 108 the stack unit 40
The paper P1, which is currently being fed, is sent to the image forming section, and in step 109, the first page is copied on the front side of the blank side of the paper P.

Thereafter, as shown in FIG. 5, in step 112, the paper PI is sent to the stack section 40 via the conveyance path 44.

Further, if it is determined in step 102 that copying of the cover is not necessary, then in step 110 the main manuscript 7 is
The first page of No. 3 is set on the M'1IiI table 2, and in step 111, paper P1 is fed from the cassette 4, and the process proceeds to step 9.

Next, in step 113, paper P2 is fed from the cassette 4, and in step 114, the second page of the original document 73 set on the document table 2 is copied in the same manner as described above. The sheet P2 whose second page has been copied by pressing the key 70 is sent to the stack unit 40 through the conveyance path 43 as shown in FIG. 6, in step 115.

Thereafter, by similar operations, the third page is copied onto the paper P2 as shown in FIG. 7, and the fourth page is copied onto the paper P3 as shown in FIG.

In step 116, it is determined whether or not the middle pages are the 5th and 6th pages, and the copied pages of the main manuscript 73 are the 5th and 6th pages.
If so, in step 117, the fifth and sixth pages are set on the document table 2 in a facing state, and both sides key 71 and copy key 61 are turned on. At the same time step 118
In step 119, the sheet P3 in the stack unit 40 is sent to the image forming unit, and in step 119, the entire surface is optically scanned, and the fifth and sixth pages are copied.6 Next, in step 120, as shown in FIG. The paper P3 is sent to the stack section 40 via the conveyance path 43.

Next, in step 121, the seventh page of the original document 73 is set on the document table 2, and the front key 69 and the copy key 61 are pressed.At the same time, in step 122, the paper P3 is sent from the stack unit 40 to the image forming unit, and in step At 123, the front side is optically scanned and the seventh page is copied. In this state, pages 5, 6 and 4.7 have been copied on both sides of the paper P3 as shown in FIG. 14(b), so in step 124, as shown in FIG. , the paper P3 is sent to the paper output tray 6.

Next, in step 125, the paper P2 remaining in the stack unit 40 is sent to the image forming unit, and similarly in step 12
6, the 8th page is copied.

At this time, since the paper P1 remains in the stack unit 40, it is determined in step 127 that there is a remaining paper, and in step 128, the paper P2 is sent to the stack unit 40 through the conveyance path 43 as shown in FIG. . Step 12 below
1 to 126 are repeated to copy pages 9 and 10 onto sheets P2 and Pl, respectively. If it is determined in step 129 that there is no need to copy the back cover, then in step 134 the copies of FIGS. 12 and 13 are made. As shown in
The paper P 2 + P 1 is ejected to the paper ejection tray 6.

If it is determined in step 129 that it is necessary to copy the back cover, in step 130 the back cover is placed on the original platen.
Set it on top and turn on both sides key 71 and copy key 61.
shall be. At the same time, in step 131, the stack unit 40
Paper PI is fed from the paper P1, the back cover is copied in step 132, and paper P1 is fed in step 133.
is discharged to the paper discharge tray 6.

In the above manner, as shown in FIG. 14(b), the paper P+ is
Page 1.10 on one side of paper P2.

Pages 2.3, 8.9 and 4.5 on both sides of P3, respectively.
, 6.7 pages are copied. These papers PI, P2,
If P3 is stacked, folded at the center, and stapled at the center, a double-page spread copy book similar to the original document 73 is obtained.

In this example, the case where the manuscript is 10 pages is explained.
Needless to say, the number of pages is not limited to 10 pages.

FIG. 15 shows the arrangement of copied pages according to the second embodiment of the present invention. The copying procedure is almost the same as that of the first embodiment described above, so the explanation will be omitted. In this embodiment, (b) Copy the first page on the right side of paper P1 as shown, and copy the first page on paper P2.
Copy pages 2 and 3 on the left and right sides of paper P3, pages 4 and 5 on the left and right sides of paper P3, and page 6 on the left side of paper P4, fold them along the center line with the copy side facing outward, and stack them one by one. It is spine bound. According to this example (a)
A double-page spread copy similar to the main manuscript shown in is obtained, and since it is a single-sided copy, it is easy to read.

In this embodiment as well, the number of pages is not limited to six pages.

〔Effect of the invention〕

As explained above, according to the present invention, since the original is divided into two parts and optically scanned, it is possible to perform bookbinding without creating blank pages between pages in the same spread state as the main original. Even after binding, it is possible to easily see the document image on the binding side.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a control panel according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the overall configuration of an electronic copying machine to which the present invention is applied, FIG. 3 is an external perspective view, and FIG.
The figure is a flowchart explaining the operation of this embodiment, FIGS. 5 to 13 are explanatory diagrams similarly showing the position of paper, FIG. The figure is an explanatory diagram showing the relationship between an original document and a copy according to another embodiment of the present invention. P...Paper 1...Image forming means (copying machine main body) 2...Document table 3.4.5...Paper supply means (cassette) 6...Paper ejection means (paper ejection tray) 40 ... Storage means (stack part) 41.43.44 ... Conveyance path 45.51 ... Conveyance path switching means (switching gate) 69
．． 70, 71.72...Selection means (key) 73...
manuscript

Claims (1)

[Scope of Claims] A means for optically scanning a document placed on a document table to form an image of the document on a sheet of paper, a means for supplying the sheet to the image forming means, and a means for forming an image. a storage means for temporarily storing the front and back sides of the printed paper and feeding it again to the image forming means; and a means for discharging the paper after copying has been completed;
An image forming apparatus comprising means for switching the conveyance path of the sheet, the image forming apparatus comprising: means for dividing the document into two in the optical scanning direction, and selecting means for independently optically scanning at least one of the two divided documents. . An image forming apparatus, characterized in that the conveyance path of the paper is switched in accordance with the divided plane of the original that is optically scanned.