JPS6227726A - Electrophotographic copying machine - Google Patents

Abstract

PURPOSE:To display surely a copiable area of an original corresponding to the copy magnification by providing a copy area display device which displays the copiable area of the original corresponding to the copy magnification of a copy magnification setting device. CONSTITUTION:A paper supply part 12 is formed on one side face of an electrophotographic copying machine body 11, and a paper eject part 13 is formed on the other side face opposite to the side face where the paper supply part 12 if formed. When the original is arranged on an original platen glass plate 14, the paper size is selected by a copy form size selecting device, and the copy magnification is set by the copy magnification setting device. The original is irradiated by a light source and the image is picked up by an image pickup device. The picture signal outputted from the image pickup device, the paper size outputted from the copy form size selecting device, and the magnification signal outputted from the copy magnification setting device are inputted to an image treating device. A copy area picture signal indicating the copiable area of the original is outputted from the image treating device. This copy area picture signal is inputted to a picture display device to display the copy area picture of the original.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electrophotographic copying machine equipped with a copying area display device for displaying a copyable area of a document.

[Technical background of the invention and its problems] In recent years, electrophotographic copying machines have been equipped with a copy area display device on the bottom surface of the document placement glass plate that displays the copyable area of the document according to the copy magnification of the copy magnification setting device. This has improved the operability of electrophotographic copying machines, making copying easier and more efficient.

As such an electrophotographic copying machine, one shown in FIG. 3 has been proposed.

In the figure, a document placement glass plate 2 is arranged on the upper surface of the electrophotographic copying machine main body 1, and a document holding plate 3 is arranged on the back side of the electrophotographic copying machine main body 1. It is installed to cover the The front side of the electrophotographic copying machine main body 1 includes, for example, a print button, a copy number setting button, a copy number display, a copy paper size selection button, a copy magnification setting button, a copy magnification display, and an exposure temperature setting key. An operation panel 4 is provided.

Further, on the lower surface of the document placement glass plate 2, as shown in FIG. 5 are arranged. The copy area display device 5 is composed of a scale 5a indicating the length of the copy paper in the running direction and scales 5b, 5b indicating the width of the copy paper.

In the electrophotographic copying machine configured in this manner, the copyable area of the original is displayed by the copying area display device 5 disposed on the lower surface of the original placement glass plate 2, so that the operability of the electrophotographic copying machine is improved. , copy work can be done easily and efficiently.

By the way, in such a conventional electrophotographic copying machine, when enlarging a part of the document, the scales 5a, 5b, and 5b move as indicated by the arrows and move to the bottom of the document, as shown by the dotted line in FIG. There was a problem in that the copyable area of the document could not be displayed because it was hidden by the screen.

[Object of the Invention] The present invention was made in order to solve the above-mentioned conventional difficulties, and an object of the present invention is to provide an electrophotographic copying machine that can reliably display the copyable area of a document according to the copying magnification. There is.

[Summary of the Invention] That is, an electrophotographic copying machine of the present invention is an electrophotographic copying machine equipped with a copying magnification setting device capable of setting a copying magnification, in which a copyable area of a document is set according to a copying magnification of the copying magnification setting device. By providing a copy area display device that displays a copy area, it is possible to reliably display a copyable area of a document according to a copy magnification.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 shows an electrophotographic copying machine according to an embodiment of the present invention. In the figure, a paper feed section 12 is formed on one side of a main body 11 of the electrophotographic copying machine. Part 12
On the other side opposite to the side where
3 is formed.

Further, a document placement glass plate 14 is disposed on the top surface of the electrophotographic copying machine main body 11 on a copy paper path (not shown) formed between the paper feed section 12 and the paper discharge section 13. A document holding plate 15 for holding down the document is attached above. Electrophotographic copying machine main body 1 adjacent to this original presser plate 15
On the front side of 1, there is an operation panel 16 incorporating, for example, a print button, a copy number setting button, a copy number display, a copy paper size selection button, a copy magnification setting button, a copy magnification display, and an exposure density setting key. A copy area display device 17 is provided on the operation panel 16 .

In the electrophotographic copying machine configured in this manner, the copyable area of the original is displayed as shown in the flowchart of FIG.

That is, as shown in FIG. 2, first, a document is placed on the document placement glass plate 14. As shown in FIG. Then, the paper size is selected by the copy paper size selection device 18, and the copy magnification is set to a desired value by the copy magnification setting device 19. Next, the original is illuminated by the light source 20, and the image of this original is conveyed by the imaging device 21. Next, the image signal S21 output from the imaging device 21, the paper size signal S'18 output from the copy paper size selection device 18, and the magnification signal 319 output from the copy magnification setting device 19 are input to the image processing device 22. be done. Then, the image processing device 22 outputs a copy area image signal 322 indicating the copyable area of the document. Next, this copy area image signal S22 is input to the image display device 23, and the copy area image of the document is displayed.

In the electrophotographic copying machine of this embodiment, the copying area display device 17 that displays the copyable area of the original according to the copying magnification of the copying magnification setting device is disposed in the electrophotographic copying machine main body 11. The copyable area of the document can be reliably displayed.

[Effects of the Invention] As explained above, according to the electrophotographic copying machine of the present invention,
Since the copy area display device is provided to display the copyable area of the original according to the copying magnification of the copying magnification setting device, the copyable area of the original can be reliably displayed according to the copying magnification.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an electrophotographic copying machine according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the copying area display device of the electrophotographic copying machine of FIG. 1, and FIG. FIG. 4 is a perspective view showing the photocopying machine, and FIG. 4 is a partially cutaway plan view showing the main parts of FIG. 3. 11...Electrophotographic copying machine body 14...
......Original placement glass plate 17...
Copy area display device Applicant Toshiba Corporation Patent attorney Sa Suyama - Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) An electrophotographic copying machine equipped with a copy magnification setting device capable of setting a copy magnification is provided with a copy area display device that displays a copyable area of a document according to the copy magnification of the copy magnification setting device. Characteristic electrophotographic copying machine. (2) The copy area display device includes a light source that illuminates a document placement glass plate on which a document is placed, an imaging device that captures an image of the document on the document placement glass plate, and an image signal output from the imaging device and an image processing device that inputs a magnification signal output from a copy magnification setting device and outputs a copy area image signal indicating a copyable area of the original; and an image processing device that inputs a copy area image signal of the image processing device and makes it possible to copy the original. 2. An electrophotographic copying machine according to claim 1, further comprising an image display device for displaying an area image.