JPS6239408Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in photoreceptors for electronic copying machines, for example.

Since the internal mechanism of electronic copying machines is complex and delicate, it is necessary to periodically inspect and maintain them. In particular, since the photoreceptor has a great effect on copying efficiency, it must be removed from the copying machine body after a certain number of copies have been made, and its surface must be carefully wiped to remove any dirt that may have adhered to it.

By the way, this photoreceptor has conventionally used a thick cylinder made of a metal material as a base body, and the outer circumferential surface of the base body is coated with a photoconductive layer. Therefore, it is quite heavy, and must be handled carefully to avoid hitting other parts or dropping it when installing or removing it from the main body of the copying machine.

However, due to the weight, part of the hand tends to come into contact with the outer peripheral surface of the photoreceptor. If even a slight contact occurs, fingerprints or palm prints may remain, and sweat or oil from the hands may corrode the photoconductive layer. As a result, copying efficiency decreases, making it impossible to obtain clear images.

The present invention was developed in view of the above circumstances, and its purpose is to create a structure that is relatively simple, but in which reinforcement of a cylindrical base having a photoconductive layer on its surface does not affect the photoconductive layer. It is an object of the present invention to provide a photoreceptor that can be used as a driving force transmitting section, which can be made light in weight and can be used as a driving force transmitting section.

An embodiment of the present invention will be described below based on the drawings. In the figure, reference numeral 1 indicates a photoreceptor rotatably supported within a copying machine main body (not shown). The photoreceptor 1 is made of a non-metallic material, for example, a paper tube, which is open at both ends, and has a cylindrical base 1a (hereinafter abbreviated as paper tube) as a base, and its outer peripheral surface is coated with a photoconductive layer 1b. be done. The paper tube 1a is quite lightweight and has sufficient strength to not deform even when subjected to the mechanical pressure necessary for copying. A handle 2, which will be described later, is fitted onto the inner circumferential wall at one end of the photoreceptor 1, and a plurality of latching protrusions 3 as convex portions are integrally formed with the inner circumferential wall at a predetermined interval on the inner circumferential wall at the other end. It is set up as follows. This latching protrusion 3
The boss 4 fits into the end where the... is provided. That is, the boss 4 is provided with a plurality of engagement grooves 5, which are engaged with the above-mentioned latching protrusions 3, so that the rotational force of the boss 4 can be transmitted to the photoreceptor 1. This boss 4 is fitted onto one end of a rotating shaft 7 that is pivotally supported by a bearing 6, and a driven gear 8 is fitted onto the other end of the rotating shaft 7. An intermediate gear 9 connected to a drive source (not shown) meshes with the driven gear 8. Further, a plurality of support rollers 10 are provided on the outer peripheral wall of the end of the photoreceptor 1 on the side of the handle 2.
...converts and supports this.

The handle 2 is made of plastic material. The handle 2 includes a cylindrical flange 12 that fits into the inner circumferential wall of the photoreceptor 1 and holds the end of the paper tube 1a, and is integrally provided with the inner circumferential wall of the flange 12 so that the inside thereof is axially moved. The handle plate 11 is divided into two parts.

It goes without saying that well-known copying components including an exposure device (not shown) are arranged around and near the photoreceptor 1 constructed in this manner.

By placing the original in a predetermined position and pressing a copy button (not shown), the driving force of the drive source is applied to the photoconductor 1 through the driven gear 8, the rotating shaft 7, and the boss 4.
transmitted to. Photoreceptor 1 rotates and performs a well-known copying operation.

Also, once you have obtained a certain number of copies,
It is necessary to remove dirt adhering to the outer peripheral surface of the photoreceptor 1. In this case, by grasping the handle plate 11 and pulling it in the axial direction, the photoreceptor 1 moves and the latching protrusion 3...
is separated from the engagement grooves 5, and when pulled further, the photoreceptor 1 is pulled out from the support rollers 10. Incidentally, the photoreceptor 1 can be mounted by reversing this operation. ) Since the photoreceptor 1 is lightweight, it is only necessary to hold the handle plate 11 with one hand and take it out of the copying machine main body to a predetermined location, without touching the outer peripheral surface of the photoreceptor 1.

Further, the hooking protrusions 3, which are thicker at one end than the other end of the cylindrical base 1a, are attached to the cylindrical base 1.
Since the cylindrical substrate 1a is made to protrude from the inner surface of the cylindrical substrate 1a, it is possible to reinforce the cylindrical substrate 1a without affecting the photoconductive layer 1b, thereby making it possible to reduce the weight of the cylindrical substrate 1a, and also to use it as a driving force transmission section.

In the above embodiment, the photoreceptor 1 is made of a paper tube as a base, but the photoreceptor 1 is not limited to this. For example, the photoreceptor 1 may be made of a plastic material and the handle 2 may be integrally provided thereon.

The present invention resides in a photoreceptor characterized in that a plurality of convex portions for transmitting rotational force are provided on the inner peripheral surface of one end of a cylindrical base having a photoconductive layer on its surface. Therefore,
Although it has a relatively simple structure, the cylindrical base having a photoconductive layer on its surface can be reinforced without affecting the photoconductive layer, making it possible to reduce the weight, and it can also be used as a driving force transmission part. It has a great effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a photoconductor and its supporting structure, FIG. 2 is a side view of the same, and FIG. 3 is an explanatory diagram of the assembled state of the other end of the photoconductor. , FIG. 4 is an explanatory diagram of the assembled state of one end side of the photoreceptor. 1...Photoreceptor, 3...Latching protrusion (protrusion), 1
a... Cylindrical substrate (paper tube), 1b... Photoconductive layer.

Claims (1)

[Scope of utility model registration request] A photoreceptor comprising a cylindrical base having a photoconductive layer on its surface, and a plurality of convex portions for transmitting rotational force provided on the inner peripheral surface of one end.