JPS61228473A - Image forming device and copying area indicating method - Google Patents

Abstract

PURPOSE:To simply, properly and quickly set an able-to-copying area by placing a subject whose copying area is displayed on an original platen and operating an area indicating mode input means so as to scan the subject. CONSTITUTION:On an original to be copied one A and four B are stated as an image, and the A denoted the area to be copied. The characters of A and B can be freely written and erased with a water pen, etc., on a transparent sheet 2 in the same size as the original 1. The transparent sheet 2 puts on the top of the original 1, and a frame 3 enclosing a necessary area in a larger size than the area to be copied on the original 1 is written on the transparent sheet 2 with a dark color such as black so that the frame 3 will not cover the character B. Then only the transparent sheet 2 on which the frame 3 is stated is placed on an original platen 4, an area indicating mode setting pushbutton is presed to set the area to an area indicating mode, and the transparent sheet 2 is scanned. At this time, a CCD can detect the frame 3 on the sheet as a dark part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] "Field of Industrial Application" The present invention relates to an image forming apparatus capable of specifying a copy area.

``Prior Art'' Generally, in an image forming apparatus capable of specifying a copy area, area specification is performed by manually inputting XY coordinates.

"Problems to be Solved by the Invention" However, in this method, the input operation for determining the desired range of the document to be copied and inputting it into the image forming apparatus is complicated, and the required area on the document and the Since it is impossible to easily recognize the correspondence with the coordinates, it takes time to set up, and the correspondence between areas may be misread, which poses a major problem in practice.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in an image forming apparatus that can specify a copy area, and to provide an image forming apparatus that can easily and accurately specify a copy area, and a method for using the same. .

[Structure of the invention]

"Means for Solving the Problem" The first invention of the present application is an image forming apparatus in which an object displaying only the area to be copied is placed on the document table and scanned by operating the area specification mode input means. This image forming apparatus is equipped with a means for making it possible to copy only an area written on an object.

The second invention of the present application is provided with a means for making it possible to copy only the area written on the iron object by placing the object displaying only the area to be copied on the document table and scanning it by operating the area specification mode input means. Using an image forming device and a transparent sheet, place the transparent sheet over the original, write the area you want to copy on the transparent sheet, place only the transparent sheet on the document table of the image forming device, and operate the area specification mode input means. This is a copy area designation method that allows copying of only the area of the document that is desired to be copied.

"Examples" Examples of the present invention will be described in detail below. FIG. 1 shows a document to be copied, in which one letter A and two letter a's are written as an image. Part A is the area to be copied. Figure 2 is a transparent GITCO of the same size as the manuscript.
It can be written on or erased with a water-based pen or the like. As shown in Figure 3, place a transparent sheet 1- on top of the original.
2 and place it slightly above the area you want to copy on the original l.
Draw a frame 3 surrounding the required area on the transparent sheet using a dark color such as black so as not to overlap the large letter B.

Next, place only the transparent GITCO with frame 3 written on it on the document table of the electronic copying machine shown in Figure D, press the area specification mode setting push button (not shown) on the electronic copying machine, and set it to area specification mode. Scan the transparent sheet. At this time, since only the frame 3 for specifying the area is written on the sheet, the photoelectric element (can
), the position of the designated area can be detected as a dark part of the reflected light from the transparent GITCO. This situation is shown in Fig. 3 and Fig. 3.

FIG. 3 is a vertical sectional view of an electronic copying machine in which a copy area can be specified. The light reflected from the original image on the original platen irradiated by the light source 5 is changed direction by the moving optical system B, passes through the imaging lens 12, and passes through a group of fixed reflecting mirrors g to form a layer on the outer periphery of the photoreceptor. An image is formed on a photosensitive drum 20 that rotates in synchronization with the holding and moving optical system 6. Around the photoreceptor drum 20, various devices for performing an electrophotographic process, such as a primary charger, a developing device, a transfer electrode, a separating device, and a cleaning device, are arranged. The image is transferred onto a transfer material, and the transfer material is sent to a fixing device IS to be fixed and sent out of the machine. A large number of LEDs 7 are arranged in the axial direction of the photoreceptor drum 0 so that the next position slightly distant from the imaging position of the original image on the photoreceptor drum 0 can be illuminated.

Fig. 3 is a schematic diagram showing only a part of the optical path in the plan view of Fig. d. /3 is a lens for charge coupled device/re, l
lI is a charge-coupled device (hereinafter referred to as COD), 10 and /
I denotes the optical path from the light source 5 (the irradiated part of the document in FIG. 1) to C0DIQ and the photosensitive drum -0, and a part thereof, respectively.

Since the CCD 1 consists of 720 small sensors arranged in the depth direction perpendicular to the paper surface of Figure 5, that is, in the vertical direction of Figure 5, it has a resolution of /-〇 in that direction when detecting dark areas. . Also, the feeding direction of the original (
9) can be read from the position of the moving optical system B by a position detecting means /9 not shown in FIG. Therefore, in memory/6 inside the electronic copying machine,
The position detected by 0DllI is stored.

This memo IJ I & memory to QC! This can be done by storing in the memory 16 the signal from the D/41 and the signal from the position detecting means/9 such as an encoder or near scale provided in the driving device of the moving optical system B.

Next, the original / in which the area including the characters has been specified is placed at the same position instead of the transparent GITCO, and copies are made. At this time, the central processing unit 17 retrieves the position information of the frame 3 previously stored in the memory/6 and scans the position information at each position.
? The lighting range of the LED 7 is specified in accordance with the signal from the
D7 is selectively turned on via driver/1 for exposure. That is, when the valve operation direction is in the direction of arrow A in FIG. 3, all LInDs 7 are lit in the scanning range outside the frame 3.
In the scanning range a of the frame 3, only the LEDs 7 outside the frame 3 are lit. As a result, a latent image is formed only in the designated area, making it possible to copy only the designated area.

According to the present invention, in addition to making multi-copy multicolor copying easier to use, it is also possible to process a large number of originals at once by setting transparent sheets and originals alternately on the automatic document feeder AD1F. is also possible.

〔Effect of the invention〕

The first invention is an image forming apparatus in which only the area marked on the dough can be copied by placing the proboscis displaying only the area to be copied on the document table and scanning it by operating the area specification mode input means. Since the image forming apparatus is equipped with a means for copying, it is possible to easily, accurately, and
Can be set up quickly.

The second aspect of the invention is to place an object displaying only the area to be copied on a manuscript table and scan it by operating an area specification mode input means. Using a forming device and a transparent sheet, place the transparent sheet over the original, write the area to be copied on the transparent sheet, place only the transparent sheet on the document table of the image forming device, and operate the area specification mode input means. As a result, since the copy area designation method allows copying only the area of the original that is desired to be copied, it is possible to accurately copy the area that is desired to be copied by simply placing a transparent sheet over the original and drawing a frame. Therefore, by using an electronic copying machine capable of color copying using only a single color, it becomes easy to obtain multicolor copies.

[Brief explanation of drawings]

Figure 1 is a plan view of the manuscript, Figure 2 is a plan view of the transparent sheet,
Figure 3 is a plan view of the original and the transparent sheet stacked on top of each other, Figure 3 is a vertical cross-sectional view of the electronic copying machine, and Figure 5 is a schematic diagram schematically showing a part of the optical path in the plan view of Figure 3. be. /11・Manuscript Co.・Transparent sheet llI・・CD0

Claims (1)

[Scope of Claims] 1. In an image forming apparatus, an object displaying only the area to be copied is placed on the document table, and an area specification mode input means is operated to scan the object. An image forming apparatus equipped with a means for making it possible to copy only an area. 2. An image forming apparatus equipped with means for making it possible to copy only the area written on the object by placing the object displaying only the area to be copied on the document table and scanning the object by operating the area designation mode input means. and a transparent sheet, place the transparent sheet over the original, write the area to be copied on the transparent sheet, place only the transparent sheet on the document table of the image forming apparatus, and operate the area specification mode input means. , a copy area specification method that allows copying of only the desired area of a document.