JPH0682926A - Copying device - Google Patents

Abstract

PURPOSE:To realize a copying device which does not cause such an anxiety that an original is damaged when an automatic document feeding means is used and which can surely grasp a reference position when the document is manually replaced. CONSTITUTION:By the automatic document feeding means 30, the document 16 is fed to the prescribed position of a document placing glass 15 by a document feeding belt 32. A document end reference 33 is provided at the end part of the glass 15 and the document placing reference (A) at a platen copying time is formed by the side surface 33a thereof. The belt 32 is disposed by being separated from the reference 33 in plane and the document placing reference (B) of the document 16 set by the feeding means 30 is set inside the belt 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus capable of placing a document by using automatic document feeding means.

[0002]

2. Description of the Related Art In a conventional copying machine having an automatic document feeding means, a document abutting reference 133 is provided at a predetermined position on a document placing glass 115 as shown in FIG. Was there. This document abutting reference 133 serves as a one-sided reference in image formation of the copying apparatus 101, and even when the automatic document feeding means 130 is used, a book document or the like is directly placed on the document placing glass 115 to make a copy. Even in the case of so-called platen copy, the same reference position was used.

The automatic document feeding means 130 has a document feeding belt 132 arranged to face the document placing glass 115, but in order to reliably replace the document along the document abutting reference 133, the conventional document feeding belt 132 is used. Has a width slightly larger than the original, and as shown in FIG.
It was configured to wrap with.

[0004]

However, with this configuration, the document feed belt 132 and the document abutting reference 133 interfere with each other, which may damage each other. Further, there is a possibility that the document fed by the document feed belt 132 may be caught by the document abutting reference 133 and damage the valuable document. On the other hand, if the document abutting reference 133 is eliminated, the one-sided reference cannot be accurately suppressed in the platen copy.

According to the present invention, by providing the lens moving means, there is no fear of damaging the original or the like even when the automatic original feeding means is used, and the reference position can be surely grasped when the original is replaced manually. The purpose is to provide a copying machine. Another object is to provide a copying apparatus which can shift the image formed on the photoconductor by using the lens moving means.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 relates to an original placement reference for placing an original at a predetermined position on an original placement glass, and the original. A document replacement unit capable of selecting whether to manually place the document at a position of the document placement reference or using an automatic document feeding unit; and a lens that forms an image of the document on a photoconductor. In the copying apparatus having, the document placement reference is
The lens is provided with a lens moving unit that has different reference positions depending on the human power and the case where the automatic document feeding unit is used, and the lens can move in a direction orthogonal to the optical axis and in a direction parallel to the plane of the document. The lens moving means is connected to movement control means for moving the lens corresponding to the different reference positions. According to a second aspect of the present invention, in the copying apparatus according to the first aspect, the movement control means moves the lens by operating the lens moving means with respect to a predetermined document placement reference. An image shift means for shifting the image formed on the photoconductor is provided.

[0007]

According to the first aspect of the present invention, there are different document placement standards when the document is manually placed on the document placement glass and when the automatic document feeding means is used. The originals are placed at the respective predetermined positions by the selection of the original replacement means. At this time, the movement control means actuates the lens moving means corresponding to the respective document placement reference positions to move the lens by a predetermined amount in the direction orthogonal to the optical axis and parallel to the plane of the document. Therefore, the image position of the original image formed on the photosensitive member does not change. In the copying apparatus according to the second aspect of the present invention, the lens moving means is operated with respect to a predetermined document placement reference to move the lens. Therefore, the image formed on the photoconductor is shifted, and it is possible to form a binding margin.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the copying apparatus of the present invention will be described below with reference to the accompanying drawings. 1 is a schematic configuration diagram of the copying apparatus, FIG. 2 is an enlarged sectional view showing a II-II cross section of FIG. 1, FIG. 3 is a perspective view on a document placing glass, and FIG. 4 is a case where a document placing reference position is changed. FIG. The copying apparatus 1 includes an apparatus main body 2
And a sheet feeding unit section 3 connected thereto, each of which is provided with a sheet feeding stage. Inside the sheet feeding unit 3, a first sheet feeding stage 4a, a second sheet feeding stage 4b, and a third sheet feeding stage 4c are provided from the top, and the transfer sheet 5 is accommodated in each of them. Each paper feed stage 4
Paper feed rollers 6a, 6b, and 6c are arranged on the upper surfaces of the transfer papers 5a, 4b, and 4c, respectively, and the transfer papers 5 are delivered intermittently. The paper feed rollers 6a, 6b, 6c are provided with double feed preventing means 7a, 7b, 7c for feeding the transfer papers 5 one by one to the next step. Similarly, the apparatus main body 2 is also provided with a fourth paper feed stage 4d and a fifth paper feed stage 4e, and the transfer paper 5 is accommodated in each of them. These paper feed stages 4d and 4e are also provided with paper feed rollers 6d and 6e and double feed prevention means 7, respectively.
d and 7e are provided. The transfer papers 5 sent out from the respective paper feed stages are guided by the guide plates 8a, 8b, 8c, 8d,
8e, it is carried into the second paper feed unit 9 which is built in the apparatus main body 2 and constitutes a paper feed device. The second sheet feeding section 9 is arranged immediately before the transfer processing section, and the loop roller 1
0 and registration rollers 11. The registration roller 11 abuts the transfer paper 5 to stop the transfer paper 5.
The front end of the sheet is aligned in the direction perpendicular to the traveling direction, and after a certain period of time has passed, it is sent to the transfer area of the transfer processing section.

On the other hand, in the photoconductor 12 which constitutes the transfer processing section, a uniform charge is applied by the charging electrode 13, and the light source 14 is placed on the original placing glass 15 by the original replacing means 100 on which the original 16 is placed. Exposure light obtained by irradiating the
7. The peripheral surface of the photoconductor 12 is irradiated through the lens 18 to form an electrostatic latent image. This electrostatic latent image is developed by the developing unit 19 to form a toner image. The registration roller 11 is driven in synchronism with the rotation of the photoconductor 12, and the transfer paper 5 is sent to the transfer electrode 20 and the separation electrode 21 to carry a toner image. After that, the transfer paper 5 is separated from the photoconductor 12 by the separation claw 22, placed on the conveyance unit 23, and conveyed to the fixing unit 24 in the next step. A cleaning unit 25 is provided around the photoconductor 12 on the downstream side of the separation claw 22 to clean the surface of the photoconductor 12 after transfer, and the charging electrode 13 is used again for the next image formation. Get charged.

The transfer paper 5 heated and pressurized in the fixing unit 24 fixes the toner image, and in the case of one-sided copying, it is sandwiched by the carrying roller 26 and sent to a paper discharge tray (not shown).
Further, when performing double-sided copying, a storage tray 27 for temporarily retracting the copied transfer paper 5 from the transport roller 26.
The sheet is fed to the automatic reversing and discharging unit 28 connected to the.
The transfer paper 5 temporarily retracted into the storage tray 27 is re-fed out and carried into the second paper feed unit 9 via the transport path 29 and the guide plate 8e. The transfer sheet 5 accommodated in the fifth sheet feeding stage 4e also shares the transport path 29.

Next, the structure of the document replacement means 100 will be described. The automatic document feeding means 30 facing the original placing glass 15 and one side of which is openably and closably locked to the housing 2a of the apparatus main body 2 constitutes the original replacing means 100, and FIG.
By rotating the automatic document feeder 30 as shown in
A so-called platen copy in which a book original 16a or the like is directly placed on the original placing glass 15 to make a copy can be performed.
The automatic document feeding means 30 has a document feeding belt 32 provided in a case 31, and a document carry-in port 3 formed in the case 31.
The sheet-shaped original 16 is taken in from 1a, and the original feeding belt 32 is rotated for a predetermined length to feed the original 16 to a predetermined position on the original placing glass 15. As shown in FIGS. 2 (a) and 2 (b), a document abutting reference 33 is provided at an end of the document placing glass 15, and one side surface 33a serves as a document placing reference (A) at the time of platen copy. Form. Therefore, the book document 16a and the like are placed along it. On the other hand, as shown in FIGS. 2B and 3, the side end portion 32a of the document feeding belt 32 is disposed apart from the side surface 33a of the document abutting reference 33 so as not to be planarly overlapped. The document placement reference (B) of the document 16 set by the automatic document feeding means 30 is set at a predetermined position inside the document feeding belt 32. Therefore, the document feed belt 32 and the fed document 16 do not come into contact with the document abutting reference 33.

These different original placement standards (A) and (B)
The image of the document 16 placed along the line forms an electrostatic latent image on the photoconductor 12 via the lens 18. This lens 18
Is in the direction orthogonal to the optical axis and the original 1
Lens moving means 18 capable of moving in a direction parallel to the plane of 6
The movement control means 34 outputs the control signal to the lens moving means 18a to move the lens 18 to a predetermined position by judging whether the automatic document feeding means 30 is used or not. Therefore, even if different document placement standards (A) and (B) are used, the image formed on the photoconductor 12 matches the one-sided standard (C) in any case.

Next, an embodiment in which the image is shifted by using the lens moving means 34 will be described with reference to FIG. FIG. 5 is an explanatory diagram of image shift. In this embodiment, the image shift means 35 connected to the movement control means 34 is provided. The image shift means 35 is used for the document 1 placed on a predetermined document placement reference.
6, the lens moving means 18 is moved by the movement control means 34.
A drive signal is sent to a to move the lens 18 by a predetermined amount. For example, when the lens 18 is moved to the position shown by the alternate long and two short dashes line in FIG. 5, the image formed on the photoconductor 12 is moved in parallel by α from before the movement, that is, from the one-sided reference (C). However, since the transfer paper 5 on the photoconductor 12 is sent according to the one-sided reference (C), the image is shifted by α, and the binding margin can be formed.

[0014]

As described above, according to the first aspect of the present invention, means for moving the lens corresponding to the document placement reference provided by manpower and the automatic document feeding means are provided. Since the automatic document feeder is used, it is possible to shift the document and place it on the document placing glass, so that the document and the feeder are not damaged. Also, when manuscripts are replaced manually,
Since a predetermined document placement reference for human power can be used, the document can be reliably and easily aligned with the reference position.

In the copying apparatus according to the second aspect of the present invention, by using the lens moving means, the image formed on the photoconductor can be easily shifted, and the binding margin can be formed.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a copying apparatus.

FIG. 2 is an enlarged sectional view showing a II-II section of FIG.

FIG. 3 is a perspective view on a document placing glass.

FIG. 4 is an explanatory diagram when a document placement reference position is changed.

FIG. 5 is an explanatory diagram of image shift.

FIG. 6 is a perspective view of an automatic document feeder of a conventional copying apparatus.

FIG. 7 is a perspective view of an original placing glass of a conventional copying apparatus.

[Description of Reference Signs] 1 Copying device 5 Transfer paper 15 Original placing glass 16 Original 18 Lens 18a Lens moving means 30 Automatic original feeding means 32 Original feeding belt 33 Original abutting reference 33a Side surface 34 Movement control means 100 Original replacing means

Claims (2)

[Claims] 1. An original placement reference for placing an original at a predetermined position on an original placement glass, and placing the original at the original placement reference position manually or by an automatic original feeding means. A document replacement means capable of selecting whether to place the document using,
In a copying apparatus having a lens for forming an image of the original on a photoconductor, the original placing reference has different reference positions depending on whether the original is placed manually or when the automatic original feeding means is used. Comprises a lens moving means capable of moving in a direction orthogonal to the optical axis and in a direction parallel to the plane of the original, and the lens moving means is a movement control means for moving the lens in correspondence with the different reference position. A copying machine characterized by being connected. 2. The copying apparatus according to claim 1,
The movement control means includes image shift means for operating the lens movement means with respect to a predetermined document placement reference to move the lens and shift an image formed on the photoconductor. Copying device.