JPS5857141A - Auxiliary device for detaching attaching and photoreceptor of copying machine - Google Patents

Abstract

PURPOSE:To make it unnecessary to provide a space for fixing the rollers for supporting a photosensitive drum, and to eliminate danger of accelerating crystallization of the drum, by attachably and detachably fixing a base fixed with rollers for supporting a photosensitive drum to guide rails through a buffer material and in a state of said rollers kept in contact with the drum. CONSTITUTION:A channel-shaped base 6 fixed with rollers 11, 12 for supporting a photosensitive drum 1 is detachably fixed through a plate spring 7 to guide rails 4, for use in a corona discharger, installed on the lower part of the drum 1 in the direction of its rotation axis. When the drum 1 is attached or detached, the drum 1 is supported by fixing this base 6 to the rails 4 in place of the discharger 5 to support the drum 1, and when a copying machine is operated, it can be left detached, thus permitting provision of a special space for fixing the rollers 11, 12 to be made unnecessary, and excess force not to be applied to the drum 1, and further, dangers of damaging the drum 1, and accelerating its crystallization to be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photoconductor attachment/detachment assisting device for supporting a photoconductor drum from below when the photoconductor drum of a copying machine is being attached or detached.

In a conventional copying machine, as shown in FIG. 1, photoconductor supporting rollers 2 are brought into contact with the lower part of the drum 1O in order to support the drum 1 when the photoconductor drum 1 is attached or removed. Since the rollers 2 were non-removably attached to the copying machine main body, installation of the rollers 2 required space within the copying machine main body.

However, in recent years, as copying machines have become smaller and devices have become more complex, it has often become impossible to provide space for mounting the mount 62 within the main body of the copying machine.

Secondly, since the rotating shaft 3Fi of the roller 2 is fixed relative to the main body of the copying machine, if the installation position is not properly adjusted, extra pressure will be applied to the photoreceptor drum l, which will promote crystallization of the drum. There was a risk that this would happen.

This invention solves the above-mentioned drawbacks of conventional copying machines,
It is an object of the present invention to provide an auxiliary device for attaching and detaching a photoconductor drum without the need to provide a special space for mounting rollers for supporting the photoconductor drum, and without the risk of promoting crystallization of the drum. shall be.

In the conventional copying machine, as shown in FIG.
This invention has been developed by focusing on the fact that a corona discharger 5 is removably attached to the device, and the present invention will be explained below based on the embodiments shown in the drawings.

In FIGS. 3 to 5, reference numeral 6 denotes a channel-shaped base body, and a leaf spring 7 is attached to the inner upper surface of this base body 6. Then, the kite rail is inserted into the base body 6, and the guide portion 4' is connected to the leaf spring 7 and one flap 6'.
It is configured to be detachably attached to the guide rail 4 for the corona discharger while being held between the two.

A roller mount 8 is fixed to the upper surface of the base 6, and the ζ roller shafts 9 and 10 are fixed to the mount 8 in the tangential direction of the photoreceptor drum when the base 6 is attached to the guide rail 4. They are attached in parallel and intersecting directions.

Roller shaft 9° 10KFi, each photoreceptor supporting roller 11.
12 are attached to the mount 9 so as to rotate freely, and when the ζ rollers 11i12 are respectively attached to the guide rail 4, they are brought into contact with the lower part of the photoreceptor drum 1.

The above-mentioned photoconductor attachment/detachment assisting device removes the corona discharger 5 attached to the lower part of the photoconductor drum 1 from the guide rail 4, and attaches the guide section 4' to the guide rail 4 with the flap 6' and the leaf spring 7. In the next state, it is mounted. The photoreceptor drum 1 is supported by being in contact with the lower part of the photoreceptor drum 1 by 11.12 t-ft.

In the above-mentioned photoconductor attachment/detachment auxiliary device wLFi, a channel-shaped base 6 to which supporting rollers 11 and 12 are attached is attached to a corona discharger guide rail 4 provided below the photoconductor drum 1 in the direction of the rotation axis. It can be attached and detached via a spring 7 as follows. When the photoconductor drum 1 is attached or detached, it is attached to the kite rail 4 in place of the corona discharger 5 to support the photoconductor drum 1 and is used in the copying machine. Since it can be removed when used for 1, there is a support roller 11.1 inside the main body of the copier.
There is no need to specially provide a support roller 11.1 for supporting rollers 11.1 and the copying machine can be made more compact.
Depending on the position of mounting 2, there is a risk that excess blade will not hang on the photoreceptor drum l due to vibrations when the photoreceptor drum is attached or removed, causing scratches or promoting crystallization. There is no such thing.

In the above description, only the case where a kite rail for a corona discharger is used is explained, but it goes without saying that the guide rail of other copying equipment may also be used. As mentioned above, the photoreceptor removal/detachment auxiliary device according to this research is attached to the guide rail of other copying equipment attached to the lower part of the photoreceptor drum of a copying machine in the direction of the rotation axis of this photoreceptor drum. By removably attaching the base body to which the roller for removing and removing the photoreceptor is attached via the buffer member and with the roller in contact with the lower part of the photoreceptor drum, the base body is attached inside the main body of the copying machine. Since there is no need to provide a special space for installing the photoconductor support, the space can be used as space for installing other copying devices when the copying machine is downsized. You can, and furthermore,
Since the extra pressure applied to the photoreceptor drum is absorbed by the buffer, there is no risk of damaging the photoreceptor drum or accelerating crystallization to cause ft-D, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the installation state of the roller for removing and removing the photoreceptor of a conventional copying machine, Figure w112 is an explanatory diagram showing the installation state of the kite rail for the corona discharger, and Figure 3 is an explanatory diagram showing the installation state of the photoconductor desorption roller of a conventional copying machine. A perspective view showing an example of the attachment/detachment assisting device, Wc
FIG. 4 is a perspective view showing the lower structure of the embodiment, and FIG. 5 is an explanatory view showing the embodiment mounted on a corona discharger guide rail. l...Photosensitive drum 4...Guide rail 6
...Base 7...Plate panel 11.12
...Rollers for supporting photoconductor

Claims (1)

[Claims] l. In a copying machine in which a guide rail is provided below the photoreceptor drum in the direction of the rotation axis of the photoreceptor drum, and a copying device is attached to and detached from the guide rail, the photoreceptor is attached to the guide rail. A photoreceptor in a copying machine, characterized in that a base body to which supporting rollers are attached is detachably attached to the photoreceptor drum via a buffer member and with the rollers in contact with the lower part of the photoreceptor drum. Detachment aid.