JPS63296060A - Image forming device - Google Patents

Abstract

PURPOSE:To execute image formation on a copied substance which is smaller than the size of an original and to attain the scale-down and the unification of the copied substance by singly or simultaneously using each mode at the time of copying. CONSTITUTION:A transparent digitizer 3 functioning as a coordinate position detecting element is arranged on the original 2 on an original platen 1 and a light emitting element array 14 is provided on the lower part of a charged unit 5 in the running direction of a sensitive body 4 to execute a copying operation. And the picture of the A area of the original 2 is copied A' on the surface of transfer paper S1(17) and the image of the B area is copied B' by changing a position on the surface of the transfer paper S1 in a multiple copying mode, then the image of the C area is copied C' on the rear surface of the transfer paper S1 in a both-surface copying mode. At the time of copying B' the transfer paper is delayed by alpha in a proceeding direction and at the time of copying C', the transfer paper is delayed by beta in the proceeding direction. As a result, copying is executed on the surface side and the rear surface side of the transfer paper S1.

Description

Detailed Description of the Invention B. 1-1 of the Invention [Field of Application for Junior Industry J-] The present invention provides an image forming apparatus with a function of specifying both image areas, that is, an image forming apparatus that specifies arbitrary both image areas of a document. The present invention relates to an image forming apparatus having an area specifying means and having a function of copying only an image of an area specified by the area specifying means onto a copying material.

[Conventional technology]

2. Description of the Related Art In recent years, image forming apparatuses such as photocopying apparatuses have been equipped with various new functions and are designed to be multifunctional.

One of the new features is a multiple copy function. This is to copy the images of multiple originals onto one side of transfer paper, which is a copying material.For example, there are two originals, one original has an image on the part that will be formed, and the other original has an image. Suppose there is an image in another part. First, if you copy the image of one document onto transfer paper and then copy the image of the other document onto the same side of the transfer paper again, the images of the two documents will be on the same side of the transfer paper. It will be copied, and a polygon copy will be completed. This kind of copying is conventional copying! A? It could also be done with l. In other words, the transfer paper that has been ejected from the apparatus after the copying of the first original image has been completed can be made to correspond to the copying of the second original image, and then the copying unit can be fed into the apparatus again using a manual feed mechanism or the like. In contrast, in recent copying machines, when multiple copying is selected on the operation panel, transfer paper is automatically circulated within the copying machine, and multiple copies can be performed by inserting multiple originals. You can also copy multiple originals (for example, two originals)! AW1 manuscript ai! If you line them up on the table,
It is also possible to automatically perform multiple copies by selecting multiple copies without replacing the original.

Another new feature is the multicolor copying function.

This develops colors (e.g. red, red, etc.) instead of the usual black developer.
This method uses a developing device (such as blue), and can produce a one-color copy image. One method is to combine the black developing device in the copying machine with the color developing device, but in recent copying machines, multiple color developing devices are housed in advance in addition to the black developing device. If you select color copy on the operation panel, you can automatically obtain a color image.

By combining the multiple copying function and the multicolor copying function described above, it is possible to further increase the functionality. in this case,
When multiple copying and color copying are selected, colored images of multiple originals are automatically obtained on the same side of one sheet of transfer paper. Also, depending on the method of selection, it is possible to obtain a multiplexed or multicolor copy image by making the image of one original document black and the image of another original document colored.

An even newer function is an area designation function (also referred to as a coordinate position detection function), which extracts and copies only the image of a necessary area from a single document image. The conventional method is to first measure the desired image areas in terms of x-y coordinates, enter the values on the operation panel, and then, in response to the signals, measure the area near the photoreceptor where the image will be formed. A method in which a light emitting element array provided on the photoconductor emits light partially and sequentially to erase an electrostatic latent image in an unnecessary area on the photoreceptor, thereby obtaining only an image of the necessary area corresponding to the specified area. It is.

Recently, areas have been specified using coordinate position detection elements (so-called digitizers). This is a board in which a position detection element (such as a sheet resistor) is built into a board that is the same size as the original, and can detect 2t (X and Y coordinates) by pressing it from the outside. By using this, if you place the original on the digitizer and press the required image areas, that area will be automatically detected, eliminating the need to measure and input the required areas as described in 1-, and visually It is convenient because it can be done with a simple and easy-to-use operation, and the area specification function can now be used effectively.

[Problem that the invention seeks to solve]

As described above, copying devices have become multifunctional by incorporating new functions such as multiplexing and multicolor zero area designation, and further wide range of applications and expansion of the range of use have been developed by combining these functions. In recent years, uses such as editing using the area specification function have rapidly increased, and the scope of its use has also expanded. On the other hand, the standardization of copying materials obtained by copying machines and further miniaturization and unification of copying materials using variable magnification functions are progressing from the viewpoint of resource saving and editing.

However, from the viewpoint of resource saving, editing, etc., there is a growing demand for further downsizing and unification of copying materials. However, in the copying devices that have been proposed to date that have an area specification function, when specifying both image areas of a document to be copied and obtaining a copy of only the image in that area, it is necessary to It was necessary to make copies using copying materials of a certain size.

That is, as illustrated in the 4th V4-(b), it is assumed that only the image portions of the desired three areas A-B@C in the original image on the second side of the original in the false figure are taken out and copied.

Coordinates of area A, .Y^1.XA, .YA2. Area B (7) Coordinates Xs, eYal eXa2 *Ya, +
, coordinates of area C Xc, @Yc, @Xc2 *YC2
When the control system is designated and inputted to execute copying, only the image portions corresponding to the designated areas A, B-C on the two sides of the original are copied A', B', and C as shown in (b). In this case, the mutual positional relationship of each copy image A-B-C on the third side-L of the copy S3 is the same as that of each specified area A, B-C on the second side of the original. Therefore, in order to obtain a copy in which the copy images A', B', and C' corresponding to each designated area A-B-C are all contained without any chipping, it is necessary to use the copy material S3 as the mutual positional relationship. is at least manuscript 2
It was necessary to use a size equivalent to that of the

In addition, the above-mentioned copy images A', B', and C' of the copy are the blank areas on the cylinder surface of the copying material, and the smaller the amount of surface printing in the designated both image areas on the second side of the original, the greater the margin ratio on the copying material surface. It becomes uneconomical.

Copies of this type cannot be said to be in line with the aforementioned miniaturization and unification of copying materials from the viewpoints of resource saving and editability.

The present invention aims to solve the above-mentioned problems in an image forming apparatus having a function of specifying both image areas.

1. Structure of the Invention [Means for Solving Problems] The present invention has an area specifying means for specifying an arbitrary double image area of a document, and only the image of the area specified by the area specifying means is printed on a copy material. The image forming apparatus has a control means for displacing the mutual positional relationship between specified image areas on the original side and an image copying area on the copying material side on which the images corresponding to the areas are copied. This image forming apparatus is characterized in that it forms an image in a form in which all images corresponding to a designated area on the document side are collectively stored on the front and back sides of a copy material smaller than the document size.

[For production]

In other words, if the image portion of the specified area on the original side is copied in a form that is concentrated on the front and back sides of the copy material, the margin ratio of the copy material surface can be reduced and the margin ratio can be efficiently utilized, so the size of the copy material used should be adjusted to the original size. This makes it possible to make the size of the copying material much smaller than the size of the original, which improves resource saving and editability, and allows copying materials to be made as compact as possible.

〔Example〕

The present invention will be explained below based on an embodiment shown in one figure. FIG. 1 schematically shows the structure of an embodiment of a copying apparatus to which the present invention is applied, that is, a copying machine capable of forming multicolor/multiple images, and its basic structure is not particularly different from that of a known copying machine.

That is, transfer paper 1, which is a copy material stored in a cassette,
7 are sequentially conveyed into the machine and wait at the registration roller 19 position.

On the other hand, the document 2 located at the position indicated by the dotted line in the figure is irradiated and scanned by the movable light source 6, and the reflected light is reflected by the movable mirrors 7, 8, 9.
, imaging lens 10. Fixed mirrors 11, 12, and 13 form an image on the surface of a rotating cylindrical photoreceptor 4, which has been uniformly charged by a loading device 5 in advance, to form an electrostatic latent image.

Next, in the case shown in the figure, toner is supplied to this latent image by a developing device 15 (first developing device, 16 is a second developing device) to make it visible, and at the same timing, the transfer paper 17 is applied to the photoreceptor. 4, the transfer charger 20
The toner image is transferred to the transfer paper by the action of
2 to a fixing device M23, where the toner image is fixed and fixed.

In the case of a single image forming process, the transfer paper is transferred to the transport roller 2.
41 is discharged onto a tray 29 via a flapper 25 and a discharge roller 28 located at the position indicated by the solid line in the figure.

In the case of multiplex (including multicolor, the same applies hereinafter) image formation,
If the operator specifies this in advance,
The flapper 25 is tilted to the position indicated by the dotted line in the figure, and the transfer paper that has passed through the fixing device 28 is reversed by the flapper, and the transfer paper passes through the conveyance path 26 and is moved to the horizontal registration roller 27.
reach the position.

In order to perform multiple copying, the lateral registration rollers 27 are rotated automatically or by an operator giving a color change copying signal, and the transfer paper is conveyed to the position of the registration rollers 19 and then stands by.

During this time, the light source 6, mirrors 7, 8...developing device 15 or 1
6, etc., the next image is formed on the surface of the photoreceptor 4, and along with this, the transfer paper is further advanced using a well-known technique, and the image forming operation is performed again through the same steps as the above-mentioned steps. become.

At this time, if the same developer is used both times, multiple copies will be made, and if a plurality of developers and toners of different colors are used for each, multicolor copies will be made.

In addition, in a system for achieving double-sided copying, which is almost the same as the multiple copying described above, in order to reverse the front and back sides of the transfer paper, the trailing edge of the transfer paper passes through the conveyance roller 24, and after a predetermined period of time, the transfer paper is reversed. The paper discharge roller 28 is reversed with the rear end of the transfer paper in its mouth, and the transfer paper passes through the conveyance path 26 with the leading and rear end of the transfer paper being reversed and reaches the position of the lateral registration roller 27.

However, by performing the double-sided copying operation of the lever, the first
The purpose can be achieved by copying on the front side of the transfer paper during the second image formation and on the back side of the transfer paper during the second image formation.

In such a copying machine, in the illustrated embodiment,
A transparent digitizer 3 as a coordinate position detecting element is arranged on the original 2 placed on the original holding table l of the copying machine, and a light emitting element array 14 is further provided on the downstream side of the charger 5 when viewed from the traveling direction of the photoreceptor 4. hand.

It is assumed that copying work is performed as described below. The light emitting element 7 ray 14 is configured by arranging a large number of elements such as LEDs in the axial direction of the photoreceptor, and is partially arranged in the axial direction of the photoreceptor and chronologically in the traveling direction according to an area designation signal. shall be turned on to dissipate the charge on the photoreceptor.

Now, as shown in the 4th axis), areas A and B@
Assume that the image of C is to be copied. Place the original 2 on the original placing table l.
, and superimpose the digitizer 3 on top of the area A.
The coordinates of X A I ・YAI ・XA2*YA2. Area B (F) coordinates Xs, Ys1 *Xs2 *Ya2
, coordinates of area C Xc, *Yc, eX c 2 ・Y
c2 to determine both image areas, bring the document or the like to the dotted line position in the machine, and use the operation panel 5 to instruct multiplex, double-sided, multicolor, area designation, etc. to start copying.

By carrying out the multiple copy mode and double-sided copy mode described above, a copy SL having the form shown in FIG. 2 can be obtained. In other words, the transfer paper S is smaller in size than the original 2.
A copy in which images corresponding to designated areas A and B in original 2 are collectively copied A-B on the front side of L, and images corresponding to designated area C are copied C' on the back side of transfer paper SI. It is a thing.

This means that the image in area A of document 2 in Figure 4) is first copied onto the surface of transfer paper SL A', and then the image in area B is transferred to the same surface of transfer paper S in the multiple copy mode described above. and then copy B, and finally copy C in double-sided copy mode.
Transfer the image of the area onto paper S.

A sequence of copying C' to the back side of is used. When copying B by displacing the image in area B, the transfer paper is delayed by α relative to the transfer direction of the paper, and when copying the image in area C in duplex copying mode, the transfer paper is moved in the direction of transfer paper advance. By delaying the transfer paper S by β
can be placed on the front and back sides of the . In the description of this embodiment, the position of the transfer paper is moved relative to the original, but it goes without saying that it is also possible to move the image formation position on the photoreceptor 4 in FIG. 1 conversely.

Another copy form example is shown in Fig. 3 (Fig. 3).

Assume that the image portion of the area D-E@F in the document 2 is to be copied. Place the original on the original table A, place the digitizer 3 on top of it, and set the coordinates of the area Xot @YD, *
Xo, 1lYo2. Area E (F) coordinates XH1*Ya, e
Xi2*YFL2. Area F (7) coordinates Xpl @YF
I1IXF2 *Yp2 is specified, both image areas are determined, the original is brought to the dotted line position in the machine, and multiplexing, multicolor, area designation, etc. are specified on the operation panel, and copying is started.

By repeating the above-mentioned multiple copy mode and double-sided copy mode, a copy S2 having the form shown in FIG. 3(b) can be obtained. In other words, there is a specified area in the original 2 on the front side of the transfer paper S2, which is smaller in size than the original 2.
The image corresponding to the area E is scaled and intensively copied D'・E, and the image corresponding to the designated area F is copied F' onto the back side of the transfer paper S2. be.

This involves first copying the image in area D of document 2 in Figure 3(a) onto the front surface of transfer paper S2 D'L, and then copying the image in area E onto the same surface of transfer paper S2 in the multiple copy mode described above. (l
il small) Copy E and store it, and finally use the synchronization of copying the image in area F onto the back side of transfer paper S2 in double-sided copy mode. When copying the image in the E area E', copy using an arbitrary magnification mode Z, and when copying the image in the F area F', use the double-sided copy mode to copy the transfer paper in the direction of travel of the transfer paper. By iK delayed by α, each transfer paper S
It can be placed on the front and back sides of 2 and copied.

In the explanation of this embodiment, the image in area E is
'The images in the L and F areas were moved in the direction of movement of the transfer paper, but of course, depending on the desired copy image, it is also possible to perform operations such as changing the magnification and moving the position of the required area singly or both at the same time. Needless to say.

Note that in the above embodiment, the number of area designation points on the document is three, but it goes without saying that the present invention is not limited to this.

C. As described in the detailed description of the invention, when specifying both image areas of a document to be copied and copying only those areas, multiple sequence, double-sided sequence, variable magnification mode, and copy position movement mode may be used singly or simultaneously. This makes it possible to form an image on a copying material smaller than the original size, making it possible to easily achieve 1K copying material miniaturization and unification.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an example of a copying apparatus according to the present invention, and FIG. 2 is an example of image formation on an output copy. Figures 3) and (b) show the designated image areas of the original and an example of the image form of the output copy, and Figures 4) and (b) show an example of the image form of a conventional copy. The specified double image area and
This is an example of an image format of an output copy. l... Original cutting table, 2... Original, 3... Digitizer, 4... Photoreceptor, 6... Light source, 7, 8, 9...
Movable mirror, 11φ12-13...Fixed mirror, 14
...Light emitting element array, 15/16...Developer, 17
... Transfer paper, 20... Transfer charger, 21... Separation charger, 23... Fixing device, 25... Flapper.

Claims (1)

[Claims] (1) In an image forming apparatus that has an area specifying means for specifying both image areas of a document and has a function of copying only the image of the area specified by the area specifying means onto a copying material, It has a control means for displacing the mutual positional relationship between an image area and an image copying area on the copying material side on which the image corresponding to the area is copied. An image forming apparatus is characterized in that an image is formed in a form in which all images corresponding to a region are collectively stored.