JPS608487B2 - Copy machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying machine that easily copies thick originals such as books facing upward.

As a conventionally known copying machine, there is a type of copying machine that moves an exposure lamp or the like along the lower surface of a platen and exposes a document placed on the platen to make a copy. To make a copy of a thick original such as a book using this type of copying machine, open the book, turn it over, press it onto the platen, press the copy button, and perform the copying process each time the page to be copied changes. The problem is that the operation must be repeated and the work is very troublesome.

Particularly in the case of thick books (weighing 2,900 kg or more), the labor required by the copying worker is significantly increased, and the books are seriously damaged due to their own weight.

The present invention has been made in view of the above circumstances, and its object is to provide a copying machine that can copy thick originals such as books with simple operations. Embodiments of the present invention will be described below with reference to the drawings.

The copying machine main body 1 includes a lower main body la having a built-in copying machine A;
The copying machine A is comprised of an upper body lb which houses an exposure mechanism B provided above the lower body la, and is equipped with a photoreceptor drum 2.

The exposure mechanism B includes a platen 3 provided in the lower wall opening □ of the upper body lb, a lamp 4 that irradiates light onto the upper surface 3a of the platen 3, a mirror 5 that reflects light reflected from the platen 3, a lens 6 that focuses the light on the east, It is composed of a reflecting mirror 7 and a Foursnel lens 8, and the reflected light passes through the Foursnel lens 8 and then passes through the mirror 9,
10, the photoreceptor drum 2 is irradiated through the slit 11. A pair of mounting frames 12, 12 are fixed in the horizontal direction on both sides of the platen 3 of the upper body lb, and each mounting frame 12
One end side of the first and second arms 13 and 14 is connected to a pin 15,
The other end sides of each of the first and second arms 13 and 14 are pivotally connected to both end surfaces 17a and 17a of the document layer table 17 via pins 18 and 19 so as to be vertically swingable. Each pin 18, 1 is rotatably supported by a pivot.
9 and each of the pins 15 and 16 are located at the vertices of a parallelogram.

The positional relationship between the pins 15, 16, 18, 19, the first and second arms 13, 14, and the platen 3 is as shown in FIG. The elastic pad 20 provided on the upper surface is spaced apart from the lower surface 3b of the platen 3, so that when the original pupil table 17 is pushed in, the elastic pad 20 is positioned directly below the lower surface 3b of the platen 3 with a gap therebetween. The positional relationship is such that they move in parallel.

21 is a counterweight provided at one end of the first arm 13, and 22 is a handle provided on the document layer table 17.

Next, the operation for copying book C will be explained.

The document layer table 17 is pulled out to the front, and several layers of the book C are placed on the elastic pad 20 with the pages opened.

When the document table 17 is pushed in this state, the book C is pressed against the lower surface 3b of the platen 3.

At this time, if there is a slight deviation between the book C and the gap, use the elastic pad 2.
Since it can be absorbed by zero elastic deformation, the book C can be reliably pressed against the lower surface 3b of the platen. When a known copying process is carried out in this state, the light from the lamp 4 passes through the platen 3 and is irradiated onto the book C, and the reflected light is reflected by the mirror 5, lens 6,
The photosensitive drum 2 is exposed to light through the mirror 7, the Fresnel lens 8, the mirrors 9 and 10, and the slit 11, so that books can be copied.

Furthermore, when copying a different page, it is sufficient to pull out the document layer table 17, turn over the pages of the book, and then perform the same operation as described above.

As described above, the book C can be pressed onto the lower surface 3b of the platen by spreading the book C onto the elastic pad 20 of the document table 17 and pushing the document layer table 17.
The operation is simple and easy, and since there is no need to turn the book C over, the book C is not damaged.

As shown in FIG. 5, a closing part 23 is formed in the document layer table 17, a recessed tray 24 is provided in the closing part 23 so that its flange 24a is in contact with the opening, and a book C is provided in the recessed tray 24. It's okay.

In this way, even if the books C have different thicknesses, the books C can be correctly pressed against the lower surface 3b of the platen 3 by using the recessed trays 24 having different depths.

Since the present invention is constructed as described above, a thick original C such as a book can be copied with a simple operation.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the overall appearance, FIG. FIG. 5 is a partially cutaway perspective view showing another embodiment of the document layer table. 1 is the main body of the copying machine, 2 is the photoreceptor, 3 is the platen, 17 is the document table, and C is the document. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A removable document stand 17 is provided below the platen 3 in the copying machine body 1, a document C is placed on the document stand 17, and the document stand 17 is pushed directly under the platen 3 to reflect the original that has passed through the platen 3. The image is optically transferred to the photoreceptor 2.
A copying machine characterized in that it is configured to project images onto a computer.