JPS6388543A - Copying machine - Google Patents

Abstract

PURPOSE:To easily perform copying operation only by placing an original on a transparent plastic sheet by providing the transparent plastic sheet which runs on an original platen and conveys the original placed on its top surface and a sheet driving device which runs the sheet in an exposure scanning direction. CONSTITUTION:A copying machine 1' has the plastic sheet 2' formed in an endless shape and the plastic sheet 2' is circulated by two sheet rollers 17a and 17b provided to the front and rear end parts of the copying machine 1'. In this case, the plastic sheet 2' is in a two-sheet superposed state on an original platen 8, but the it is a completely transparent sheet, so the original mounted thereupon is exposed and scanned with light from an exposure lamp 13 which is transmitted through the two plastic sheets. When the plastic sheet is an endless belt, an original which is infinitely long can be copied logically. Consequently, the original is only mounted on the transparent plastic sheet and then its copy is taken.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a so-called moving document copying machine that scans and exposes documents by moving them on a document table, and which facilitates copying of documents such as thick books in particular. This invention relates to an original moving type copying machine.

2. Description of the Related Art As an example of the above-mentioned original moving type copying machine, there is known an original transporting device described in, for example, Japanese Unexamined Patent Publication No. 59-61855. When copying many originals in succession, this device uses a bag-like case made by connecting a white sheet and a transparent sheet, and inserts the original into each bag-like case, and The original is conveyed in each case and processed for copying, and there is no occurrence of original jams or jams that occur in conventional automatic document feeders.
In addition, it can be said that this is an excellent document transfer device in that there is no risk that the document will be damaged due to rubbing or bending while being folded and transferred.

Problems with the Prior Art However, in a moving document copying machine equipped with the conventional document transport device as described above, the document is stored in a bag-like case made up of a transparent sheet and a white sheet as described above. Because the document is transported in its case,
It is not suitable for copying thick books, and since the document must be packed into the bag-like case each time, copying is time consuming and there are problems in terms of work efficiency.

OBJECTS OF THE INVENTION Accordingly, the object of the present invention is to simply place a document on a transparent sheet on a pole without having to take the trouble of storing it in a bag-like case. To provide a document moving type copying machine which can easily perform copying work by just using the machine and can handle thick documents such as books.

The main means adopted by the present invention in order to achieve the "Structure of the Invention" is that the main means employed by the present invention is that in an A document moving type copying machine in which an original document is moved on a document table and exposed and scanned, A copying machine comprising: a transparent plastic sheet that travels on a document table to convey a document placed on the top surface; and a sheet drive device that travels the transparent plastic sheet in an exposure scanning direction. It is.

Operation When an original such as a book is placed on a transparent plastic sheet and a copy button is pressed, the transparent plastic sheet is driven to run in the exposure scanning direction by the sheet driving device, and the original is copied. The sheet driving device can make a plurality of copies from - originals by reciprocating the plastic sheet.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

Here, FIG. 1 is a perspective view of the entire copying machine according to one embodiment of the present invention, FIG. 2 is a schematic configuration diagram of the copying machine shown in FIG. FIG. 2 is a schematic configuration diagram of the copying machine seen from the side.

Note that the following examples are merely examples embodying the present invention, and are not intended to define the technical scope of the present invention.

In FIG. 1, a horizontally long transparent plastic sheet 2 is placed 112i on the top surface of a copying machine 1. As shown in FIG. Sprocket holes 4, 4 are bored at both edges 3.3 of the plastic sheet 2 at a constant pitch in the longitudinal direction of the sheet.

Inside the copying machine 1, there are sprocket holes 3, 3. A 211M sprocket 5.5 having pawls that engage with... is rotatably attached.

This sprocket 5.5 is integrally rotated by a motor (not shown) and reciprocates the plastic sheet 2 in the direction shown by arrow 6.

The above plastic sheet 2 is l1il! Copy machine 1
On the upper surface of the plastic sheet 2, there is a ma
An open lower is formed, and a document table 8 (see FIG. 2) made of a transparent glass plate is fitted into this open lower.

In this embodiment, the sprocket 5.5 constitutes a driving device for the plastic sheet 2. In the embodiment shown in the figure, the rewound copy paper is fed from the roll of copy paper 9 to the paper feed section 10. Paper may also be fed from a paper cassette.

For example, when copying a book 11 as shown in FIG. 1 with the copying machine 1 configured as described above, the book 11 is placed in an open state as shown in the figure on the plastic sheet 2, Press the copy button 12.

As a result, the sprocket 5.5 is rotationally driven in a certain direction, and the plastic sheet 2 and the book 11 placed on its top are conveyed, and when they pass through the document table 8, light from the exposure lamp 13 shown in FIG. 2 is emitted. Exposure and scanning are carried out by , and an original image is formed on the photosensitive drum 14 . This original image passes through a developing section (not shown) and is visualized into a toner image, which is transferred onto copy paper supplied from the paper feed section 10, then heated and pressed at the fixing section 15, and placed on a paper output tray. It is discharged on 16th.

If the copy paper is in roll form as shown in Figure 2,
The copy paper 9 is cut by a cutter (not shown) according to the size of the document passing through the document table 8, and only the cut copy paper is discharged to the paper discharge tray 16 as described above.

When it is detected that the book 11, which is a document, has passed through the document table 8 as described above, the sub-rotation lifts 5, 5 are rotated in the opposite direction, and the plastic sheet 2 and the book 11 are rotated in the opposite direction.
is transported to the original position shown in FIG.

By repeating the above operations, multiple copies can be made from the book 11.

In the embodiment shown in FIGS. 1 and 2 above, the plastic sheet 2 has an end shape, but the copying machine 1 shown in FIG.
', a plastic sheet 2' is formed in the shape of an endless belt, and two sheet feeding rollers 17-. 17I.

The plastic sheet 2' is conveyed in a circular manner.

In this case, the plastic sheet 2' is stacked in two layers on the document table 8, but since the plastic sheet 2' is a completely transparent sheet, the document placed on top of the plastic sheet 2' is Exposure scanning is performed by the light from the exposure lamp 13 that passes through the two plastic sheets.

When the plastic sheet is in the form of an endless belt, as in the embodiment shown in FIG. 3, theoretically it is possible to copy an unlimited number of long originals.

Further, although the embodiment shown in FIG. 3 shows a case where copy paper is supplied from the paper feed cassette 18,
This can be replaced with a roll of copy paper as shown in FIGS. 1 and 2.

Effects of the Invention As described above, the present invention is applicable to a moving document copying machine in which an original is moved on a document table for exposure scanning. This copying machine is characterized by being equipped with a plastic sheet and a sheet drive device that drives the transparent plastic sheet in the exposure scanning direction. A copying machine is provided which is capable of copying and is particularly suitable for copying thick books and the like.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the entire copying machine according to one embodiment of the present invention, Fig. 2 is a schematic configuration diagram of the copying machine shown in Fig. 1 seen from the side, and Fig. 3 is a diagram according to another embodiment. 1 is a schematic configuration diagram of a copying machine seen from the side. (Explanation of symbols) 1.1'...Copy machine 2.2'...Plastic sheet 4.4. ...Sprocket hole 5.5...Sprocket 8...Document table 9...Document paper 10...Paper feed section 11...Books.

Claims (1)

[Claims] (1) In a moving document copying machine that moves the document on the document table to perform exposure scanning, a transparent plastic sheet that transports the document placed on the top surface by running on the document table; and the above-mentioned transparent plastic sheet. 1. A copying machine comprising: a sheet drive device that drives a sheet in an exposure scanning direction.