JPS58105171A - Copying machine - Google Patents

Abstract

PURPOSE:To copy both surfaces of an original without turning over it by providing two exposure means on different sides along an original conveyance passage. CONSTITUTION:An original A is positioned on the 1st exposure glass 51 by the 1st stopper 25 and its reverse surface A' is projected on a photosensitive drum 6 through a lens 7. A toner image on the reverse surface A' is transferred to a form 14 and changeover pawls 23 and 24 operate to feed the form 14 to an intermediate tray 21. After the original A is carried onto the 2nd exposure glass 52 and positioned by the 2nd stopper 26, its top surface A'' is projected on the photosensitive drum 6 through mirrors 10 and 11 and lens 7. A toner image on the top surface A'' is transferred to the other side of the form 14 having copied one side from the intermediate tray 21, and the form is fed to a paper discharging tray 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying machine, and more particularly to an automatic double-sided copying machine that automatically copies all sheets of a double-sided original.

When a double-sided original is copied onto a single sheet of paper using a conventional copying machine, one side of the original is copied, then the original is turned over manually or by a document reversing mechanism, and the other side of the original is copied.

For this reason, it is necessary to turn over the original one side, which tends to damage the original, and the original reversing mechanism is complicated and expensive.

Note that the same applies when copying onto two sheets of paper.

The present invention is based on the above 4! This was developed in consideration of the current situation, and its purpose is to provide a complete copying machine that can automatically copy double-sided originals onto all sheets of paper without folding the original.

Practical examples of the present invention will be explained below with reference to all the drawings.

A document conveyance path 2 is formed in the copying machine main body 1, and the document conveyance path 2 includes a horizontal first path 2. The document A is completely conveyed in the direction of the arrow by a document IV12 feeding means (not shown) and discharged to the document tray 4 from the extraction []3.

Said 1st. 2nd road 2. ．． 2. The first thing is. 2nd manuscript table 5.
．． 5. is provided, and a photoreceptor 6 is provided facing the first document table 51.
is provided through the lens 7, and the first extraction table 5,
A first exposure charging light source (flat lamp) 81 is provided below (Bj 5, opposite to α), and the upper surface 5 of the second document table 5.
1b, a second exposure light source (flash lamp) 8
．． is provided, and the second document table 5.0 reflection optical path 9 passes through the first mirror 10° and the second mirror 11 to the first document table 5.
It is orthogonal to 1.

Reference numeral 12 denotes a paper feed mechanism, in which the paper 14 on the paper tray 13 is fed to a first conveyance path 16 by a paper feed roller 15, and after the first conveyance path 16 has passed the entire photoreceptor 6, it is connected to a discharge path 17 and returned to υ. Road 1
8, and the output path I7 is located at the exit 19 and the output tray 2.
0, the return path 18 is connected to the tray 21, and the tray 21 is connected to the first conveyance path 1 via the second conveyance path 22.
6 consecutively.

23.24 is the 1st. The second switching gate, 25°26 is the first
．． This is the second stopper.

Next, the operation will be explained.

When double-sided original A is set on the population side of the first path 2I and the start button is pressed, the double-sided original A is transferred to the first path 2I by the document transport means.
, and comes into contact with the first stopper 25 and the first
Punishment stand 5. When the transport is positioned upward, the first flat magazine lamp 8. emits light and an image 'of one side A' of original A'? f: The photoreceptor 6 is irradiated and exposed, and in synchronization with this, the image is copied onto one side of the paper 14 fed by the paper feed roller 15.

The sheet 14 on which the one-sided copy has been made is generally fed from the first switching gate 23 to the return path 1g, reversed, and stored in the tray 21. At this time, the g2 switching gate 24 is at the solid line position.

Thereafter, the first stopper 25 is operated to the non-stop position shown by the imaginary line, and both sides )jj, )ff4A, the first path 21, and the second path 2. The second stopper 26 is conveyed along the
Second yJ, complementary 5. When the transport is positioned above, the second flash lamp 8. emits light and displays the other single-sided 1'' image of the double-sided NC phase A at the 1st and 2nd mirrors 10.11
and Ml manuscript table 52. The photoreceptor 6 is exposed to light through the lens 7.

At the same time, the paper 14 in the -C tray 21 is moved to the conveyance path 22 by the paper feed roller 15'. The image is conveyed to the photoreceptor 6 via the first conveyance path 16, and is copied onto one side opposite to that described above.

At this time, the second switching gate 24 is operating at the virtual line position.

Since the 8g1 switching gate 23 is at the virtual line position, the copied paper is ejected to the ejection tray 20 via the ejection w517.

On the other hand, the second stopper 26 is at the non-stop position indicated by the imaginary line, and the double-sided original sA is discharged onto the original tray 4.

As described above, by conveying double-sided originals in all directions, it is possible to automatically copy them onto a single sheet of paper, and since there is no need to double-sided originals and return them, there is no need to damage the originals, and there is no need to copy complicated documents. , there is no need to provide a bucket reversing mechanism.

Note that it is also possible to copy the entire double-sided original onto one side of two sheets of paper instead of copying onto both sides of one sheet of paper.

In this case, the paper conveyance path may have a conventionally known structure.

Alternatively, instead of using a flash lamp, a normal lamp may be moved back and forth along the document table 5 to serve as the light source for exposure.

The present invention is as described above, and a double-sided original can be copied onto paper by being conveyed in one direction, and there is no need to turn over the entire original, so there is no damage to the entire original.

[Brief explanation of the drawing]

The drawings are overall explanatory views showing embodiments of the present invention. 1 is the copying surface body, 2 is the document conveyance path, and 5t+5s is the first .
Second document table, 6Fi photoreceptor, 81, 8□ are light sources for 1° and 2nd exposure.゛Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Masaaki Yonehara Accountant〇 (Disloyal)

Claims (1)

[Claims] The entire document conveyance path 2 is formed in the copying machine main body 1, and the document conveyance path 2 is completely formed in the copying machine body 1.
1st. 2nd IIJ, combination 5. ,5. Along with setting up a meeting,
A first document table 5. A first exposure light source 8 that irradiates and exposes the upper original image onto the photoreceptor 6. The second document table 5 is located on the outward 5- side of the second/JX document table 51.
A 211th light source 8 for irradiating and exposing the original image on the photoreceptor 6 to the photoreceptor 6; A copying machine characterized by being fully equipped.