JPS58207069A - Copying apparatus - Google Patents

Abstract

PURPOSE:To easily correct the distortion of a copied image, by installing a displacing means which can change the moving direction of the photosensitive body or image forming body or the position of their axis of rotation. CONSTITUTION:A drum-shaped photosensitive body or image forming body 7' is supported by a shaft 13 under a rotation-free condition and one end of the shaft 13 is fitted to the side wall of the main body of this device via a beasing 14 so that the axis of the shaft 13 can change its position both verically and horizontally, and then, the other end of the shaft 13 is supported by a supporting member 11. The supporting member 11 can be removed from and attached to the main body of the device, and, when an eccentric pin 12 fitted to the main body is rotated, the supporting member 11 is moved both vertically and horizontally. As the shaft 11 moves, the shaft and the photosensitive body or image forming body 7' supported by the shaft 13 is also moved both vertically and horizontally with a bearing 14 side acting as a fulcrum. After the photosensitive body or image forming body 7' is moved to a desired position, the supporting member 11 is fixed to the main body by means of a fixing member 16.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus that is used in a slit exposure type copying machine or the like, and is capable of changing the position of a photoreceptor or an image forming body with respect to the entire apparatus.

An electrical latent image is formed on a photoconductor or an image forming body using an optical system such as a mirror or a lens, and the latent image is developed by a developing device and supplied by a supply device of the copying section 4J. Copying in which an original image developed on a photoconductor or image forming body is transferred onto a copying member, and the transferred image is completely fixed by a fixing device (a photosensitive method in which the image forming part from the optical system is flat in the limb) The moving direction of the body or image forming body and the document scanning direction of the optical system composed of mirrors and lenses are on the same plane, or the mounds formed by slit exposure and imaged by the optical system are on the same plane. It is necessary that the longitudinal direction is perpendicular or at least one of the directions, and if the photoreceptor or image forming body is a rotating body, the axis of rotation thereof and the document scanning direction of the optical system are at right angles. or parallel to the longitudinal direction of the house imaged by slit exposure by the optical system.If the above conditions are not satisfied, distortion will occur in the copied image.

Conventionally, it has been used as a means for correcting the relationship between the original scanning direction of the optical system and the moving direction or rotation axis of the photoreceptor or image forming body, and also as a means for correcting the relationship between the document scanning direction of the optical system and the moving direction or rotation axis of the photoreceptor or image forming body. As a means of correcting the relationship between the longitudinal direction of the photoconductor or the moving direction or rotational axis of the photoreceptor or image forming body, a method is often used to change the inclination or position of at least one of the mirrors or lenses in the optical system. It is being In this method, the mirrors and lenses of the optical system are often installed inside the main body of the copying machine and require a lot of time for adjustment, so the direction of movement or rotation of the photoreceptor or image forming body is It is advantageous to change the position of the axis.

The principle of image formation will be explained with reference to FIG.

The original 1 placed on the transparent mounting table 2 is appropriately illuminated,
The original image is transferred to the first reflecting mirror 3. Second reflecting mirror 4, lens 5
, a third reflecting mirror 6, and a fourth reflecting mirror 6', the light is guided to a photoreceptor or an image forming body 7 (7' in the case of a rotating body). The photoreceptor or image forming body is moved at a constant speed in the direction of arrow C or rotated about the rotation axis 10.

In the case of the original fixed slit exposure method, the first reflecting mirror 3 scans the original 1 in the direction of arrow B, and the reflected light is 0; It is guided to a lens 5 via a reflecting mirror 4, and the photoreceptor or image forming body 7 (7') is guided by this lens 5 to reflecting mirrors 6, 6',
The original image is formed and exposed through f.

In the case of the moving document table slit exposure method, the document table 2 on which the document 1 is placed moves in the direction of the arrow, the document 1 is appropriately illuminated, and the document image is transferred to the first reflecting mirror 3 and the second reflecting mirror. 4,
A photoconductor or image forming body 7 is scanned by a slit exposure optical system consisting of a lens 5, a third reflecting mirror 6, and a fourth reflecting mirror 6', and moves at a constant speed in the direction of arrow C, or is centered around an axis 10. (a) An image is formed on the top.

The above is an example of image formation. Next, the present invention will be explained with reference to an embodiment shown in FIG.

A drum-shaped photoreceptor or image forming body 7' is rotatably supported by a shaft 13. One end of this shaft 13 is connected to a bearing 1 attached to the side wall of the main body of the copying machine.
4, and is attached in such a manner that the axis of the shaft 13 can be changed vertically and horizontally using the bearing as a fulcrum. Further, the other end of the shaft 13 is supported by a support member 11. The support member 11 is removably attached to the main body of the copying apparatus. The support member 11 is also adapted to fit into a pin 12.15 attached to the main body. The pin/12 is an eccentric pin having a shape as shown in FIG. The bottle 16 is a fixed bottle, and is fitted into an elongated hole 18 provided in the support member 11. By rotating the bin 12, the support member 11 moves vertically and horizontally, and in conjunction with this, the support member 11j/i: supported/gift 13 and the photoreceptor or image formation supported by the shaft 13. The body also moves vertically and horizontally using the bearing 14 as a fulcrum.

Thereafter, the support member 11 is fixed to the main body of the copying apparatus by the fixing member 16.

Note that the bins 12 and 15 are fixed to the main body of the copying machine, and the bin 1
The hole 17 provided in the support member 11 that is fitted with
1 is arranged so as to move, the same thing as above applies.

FIG. 4 shows another embodiment of the present invention. As in the previous embodiment, the photoreceptor or image forming body 1 is attached to a support member 11, and the support member 11 is fitted with a pin 21 attached to a movable member 19, and a fixed member 23 is attached to the support member 11. It is fixed to the moving member 19. Moving member 19
is attached to the copying apparatus main body by fitting the pin 2o attached to the copying apparatus main body in the hole 24.25 provided in the moving member 19, and the hole 24.26 provided in the moving member 19Vc The hole is elongated in the direction of movement of the member 19. When the movable member 19 is moved in the direction of the long hole of the movable member 19 using the pin 2Oi guide, the support member 11 fixed to the movable member 19 moves, and the shaft 13 attached to the support member 11 and the shaft 13 supported by the shaft 13 are moved. The photoreceptor or image forming body τ which is attached to the bearing 14
The moving member 19 moves in the moving direction using the moving member 19 as a fulcrum.

It should be noted that at least one of the pins 20 is an eccentric pin as shown in FIG. The same thing can be said for a hole having a large diameter and configured to change the position of the moving member 19 by rotating an eccentric pin.

The present invention also provides a photoreceptor or an image forming member, a developing device for developing a latent image formed on the photoreceptor or image forming member, and a cleaning device for cleaning residues attached to the photoreceptor or image forming member. , charging means for applying a potential to the photoreceptor or image forming member, transfer means for transferring the image developed on the photoreceptor or image forming member to a copying member, and separation for separating the copying member from the photoreceptor or image forming member. At least one of the means may be combined to form a detachable unit, the support member 11 is made a part of the unit, and one end of the unit may be set as the entire reference and the other end may be moved in any direction. Needless to say, it is included. -Furthermore, the present invention can be applied to cases where the photoreceptor or image forming body is not drum-shaped.

As described above, according to the present invention, in a copying apparatus that forms an original image on a photoreceptor or an image forming body through an optical system composed of lenses and mirrors, it is possible to use a copying apparatus during or after assembly of the apparatus. The distortion of the copied image can be easily corrected at any time, the correction time can be shortened and simplified, and a good quality copied image can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of image formation, FIG. 2 is a perspective view of essential parts showing one embodiment of the present invention f3'lJ, FIG. 3 is a perspective view of an example of a pin used in the present invention, and FIG. The figure is a perspective view of another embodiment of the invention. 7.7'...Photoreceptor or image forming body, 11
...Supporting member, 12...Pin, 13.
...Shaft, 14...Bearing, 15...
...Pin, 17...Reference hole, 18...
...Elongated hole, 19...Moving member, 20.21...
····pin. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 2

Claims (3)

[Claims] (1) It is constructed such that an image on an image support is formed on a photoconductor or image forming body by electrical or optical means and is copied, and the moving direction or rotational axis position of the photoconductor or image forming body 1. A copying apparatus comprising a displacement means capable of changing the . (2) A photoconductor or image-forming body, a developing device that develops a latent image electrically or optically formed on the photoconductor or image-forming body, and any residue attached to the photoconductor or image-forming body. 2. A copying apparatus according to claim 1, wherein at least one of the cleaning devices for cleaning an object is combined with a displacement means to form one detachable unit. (3) a photoreceptor or image forming member, a charging means for applying a potential to the photoreceptor or image forming member, a transfer means for transferring an image developed on the photoreceptor or image forming member to a copying member; Copying according to claim 1, characterized in that at least one of the separating means for separating the copying member from the photoreceptor or the image forming body is combined with a displacement means to form one detachable unit. Device.