JPS59104636A - Electrophotographic copying device - Google Patents

Abstract

PURPOSE:To whiten an optional part of an original by providing a mask substrate provided with plural mask members whitening or black-copying an optional part of an original so as to be attachable and detachable, on the lower part of a transparent member for placing an original, so as to be insertable and detachable. CONSTITUTION:Transparent glass 2 for placing an original 6 is provided on the upper face of a copying machine body 1, the original 6 is pressed by an opening and closing cover 3 provided with an elastic member 4, and plural mask members 5a, 5b... are provided so as to be attachable and detachable in a transparent mask substrate 5. This mask substrate 5 is provided so as to be insertable and detachable as indicated with arrows A, A' between the transparent member 2 for placing the original 6 and a light source 7 such as a halogen lamp for exposing, irradiating and scanning the original, etc., and the transparent mask members 5a, 5b... for making a light of the light source 7 transmit, and mask members 5c, 5c' color-processed in a part for whitening or black- copying an optional part of said original picture are placed like a measure so as to be attachable and detachable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to, for example, an electrophotographic copying apparatus of the plain paper copying type.

Conventional structure and its problems Traditionally, when attempting to obtain a copy by printing out some of the information in a manuscript in white or solid black, a blank or black page is placed in the part of the document that you want to make white or black. It is common practice to overlap colored papers and make copies.

However, with this method, whether you want to print white or solid black, you have to cut out separate pieces of blank or colored paper and overlap them to copy the white or solid black parts of the original. , I spent a lot of effort and wasted time preparing it.

OBJECTS OF THE INVENTION The present invention aims to eliminate such conventional drawbacks and provide an electrophotographic copying apparatus that can easily whiten or completely black any part of a document with a simple configuration. It is.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides whitening (2) of any part of the original between a transparent member on which the original can be placed and a light source that illuminates the original. < is provided with a mask substrate equipped with a mask member for black copying, and any part of the original is whitened out or black copied using this mask member.

Description of examples Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of essential parts of an embodiment of the present invention, in which a 1t/'i copying machine main body is provided with a transparent member 2 such as a transparent glass plate on the upper surface on which an original is placed. Reference numeral 3 denotes an opening/closing lid equipped with an elastic member 4 that suppresses and regulates the original onto the transparent member 2; 5 is a transparent mask substrate made of glass, plastic, etc.; Mask members 5a, 5b, 5c,...5 manufactured by
A plurality of n are removably provided.

As shown in FIG. 2, this mask substrate 6 is placed between a transparent part 2 on which the original 6 is placed and a light source 7 such as a fluorescent lamp or a fluorescent lamp that scans the original 6 with exposure light. As shown by arrows A and 8' in FIG. 1, it is removably installed at rL.

The transparent mask substrate 5 includes transparent mask members 5a and sb that transmit the light from the light source 7, as shown in FIG.

... 6n, and mask members 5c and 5c', which are colored in areas where you want to white out any part of the original image or make a solid black copy, are removably arranged in a focused pattern. ing.

Note that the mask members 5 c and 5 c', which have been colored, do not affect the copying of the original image, so they may or may not be provided. Further, these mask members are not limited to square grids, but may be made by dividing a horizontal single plate colored at arbitrary points into a plurality of sheets, and replacing each sheet according to the original.

When the mask substrate configured in this manner is inserted into the lower part of the transparent member on which the original is placed as shown in FIG. 4 and copies are made, the mask member f C' whose light source 11411 surface is colored white
In this case, the light from the light source is reflected, and the masked portion of the original 6 is copied in white, creating a copy with the original image erased. The light source light is absorbed by the 50 parts of the mask colored black, and the original image is also reflected and is not exposed. Therefore, the masked part of the original 6 is completely black, and the original image is covered in black. A copy can be made. The light from the light source passes through the transparent mask member 5a to expose the original image as in the case of normal copying, so that a copy exactly as the original can be obtained.

Effects of the Invention As detailed above, according to the present invention, there is provided a mask in which a mask member colored so as to whiten or black copy any part of the original document is disposed at the bottom of a transparent member on which a document can be placed. Since copies are made by inserting the substrate, it is possible to easily white out unnecessary parts of the original image or obtain a black copy simply by changing the arrangement of the mask member. 1. If mask members are prepared in various shapes and sizes, it is possible to black-paint any part of a document in any shape by combining them.

Furthermore, since the space between the transparent member on which the original is placed and the light source can be used for installation, the copying machine itself does not need to be enlarged and can be realized with a simple configuration. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts of an electrophotographic copying apparatus according to the present invention;
Fig. 2 is a sectional view of the main part thereof, Fig. 3 is a perspective view of the length υ of the mask substrate used in the present invention, and Fig. 4 is a main part of the embodiment of the present invention with the mask substrate inserted. FIG. 1... Copy machine body, 2... River/transparent member, 5...
...Mask substrate, 5a to 5n...Mask member, 6...Document, 7...Light source. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 4

Claims (1)

[Claims] A transparent member on which an original (4) can be placed, and an opening/closing lid that covers the transparent member and suppresses and restricts the original to the transparent member, and a target mark is placed at the bottom of the transparent member on which the original is placed. An electrophotographic copying apparatus comprising a removably insertable mask substrate having a plurality of removably arranged mask members for whitening or black copying any part of a document.