JPH04136947A - End face stripping device for photosensitive drum - Google Patents

Abstract

PURPOSE:To smoothly and rapidly scrape the coated film of an OPC photosensitive body by allowing a cutting tool having elasticity such as a spring to abut on the end face stripped part of the OPC photosensitive drum which is rotating. CONSTITUTION:A cutting tool mechanism 10 for stripping the end face coated film is equipped on the side end part of the photosensitive drum 1. The mechanism 10 is provided with a 1st cutting tool part 2 for stripping the coated film, which strips the coated film at the edge of the drum 1, and a 2nd cutting tool part 3 for stripping the coated film, which strips the coated film on the interior diameter side of the photosensitive drum. A 1st cutting tool 2A for stripping the coated film is provided with a pressure spring 2B which presses the cutting tool 2A to the outside and a 2nd cutting tool 3A for stripping the coated film is also provided with a tension spring 3B which pulls the cutting tool 3A inside. The coated film at the end face of the photosensitive drum is smoothly and rapidly stripped by this constitution.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an edge peeling device for photosensitive drums, and is used for edge peeling of photosensitive drums, which are key components of copying machines, printers, facsimile machines, etc. using electrophotography. In particular, the present invention relates to an edge peeling device for a photosensitive drum suitable for peeling off the edge of an OPC photoreceptor coated by a dip coating method.

[Conventional technology]

Conventionally, in an OPC photosensitive drum coated using a dip coating method, one end and the inside thereof are coated. Inside the device, this end is used for positioning with the developing device, and the inside of the photosensitive drum is fixed with flanges, etc., so if there is an OPC coating, the OPC coating may be scraped and print defects may occur. The edges of the photosensitive drum needed to be peeled off.

The method of peeling was: - The OPC photoreceptor coating was dissolved and peeled off using a solvent capable of dissolving the OPC photoreceptor.

3. Detailed Description of the Invention [Problems to be Solved by the Invention] The above-described conventional end face peeling of a photosensitive drum is performed by dissolving the coating film at the peeled portion with a solvent that can dissolve the OPC photosensitive member. For this reason, defects are likely to occur when the regular photoconductor coating is dissolved due to the scattering of the solvent, and the edge of the regular photoconductor coating after peeling is uneven due to penetration of the solvent, resulting in changes in the film thickness. , this edge may cause printing defects or the coating may peel off from this edge. Furthermore, since a solvent is used, it is necessary to dry the end face after peeling, which increases the number of steps and causes problems such as poor productivity.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an end face peeling device for a photosensitive drum that can overcome the disadvantages of the conventional example and can smoothly and quickly peel off the coating film on the end face of a photosensitive drum.

[Means to solve the problem]

In the present invention, a support shaft that fixes and supports a cylindrical photosensitive drum from the inside, first and second support members that support both ends of this support shaft, and a drive mechanism for rotating the support shaft together with the photosensitive drum;
In the end face stripping device, the tool mechanism includes a tool for removing paint film, a tool holder that supports the tool for removing film, and a tool installed in the tool boulder that presses the tool for removing paint film toward the outside and a spring. , and a reciprocating movement setting section for setting the distance that the coating film stripping tool reciprocates against the spring.

This aims to achieve the above-mentioned purpose.

[Embodiments of the invention]

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the present invention will be explained based on FIGS. 1 to 3.

The embodiment shown in FIGS. 1 to 3 includes a drum support shaft 5 that fixes and supports the cylindrical photosensitive tram 1 from the inside, and first and second drum support shafts that support both ends of the drum support shaft 5. It is equipped with a support member and a drive mechanism (not shown) that rotates the support shaft 5 together with the photosensitive drum via the first or second support member, and a drive mechanism (not shown) for rotating the support shaft 5 together with the photosensitive drum 1 is provided at the side end of the photosensitive drum 1. A bite mechanism 10 is equipped. The bite mechanism 10 includes a first paint film peeling part 2 for peeling off the paint film on the edge of the photosensitive drum 1 and a second paint film peeling part 3 for peeling off the paint film on the inner diameter side of the photosensitive drum. It is equipped with Among these, the first coating film peeling bite part is
A coating film stripping tool 2A, a tool holder 6 that supports this first coating film stripping tool 2A, and a first coating film stripping tool 2A installed inside the tool holder 6 with the first coating film stripping tool 2A facing outside. It is constituted by a pressing spring 2B that presses and a reciprocating movement setting section 2C that sets the distance by which the first paint film peeling tool reciprocates against the pressing spring 2B. The second paint film peeling tool part 3 also includes a second paint film peeling tool 3A for peeling off the paint film on the inner diameter side of the photosensitive drum, and this second paint film peeling pipe l-3A. It is provided with a supporting tool boulder 7 and a tension spring 3B installed inside the tool boulder 7 and pulling the second paint film peeling tool 3A inward.

Further, in this embodiment, a general-purpose lathe chuck 11 is used as the first support member described above. Further, a general-purpose lathe tailstock 12 is used as the second support member.

Next, the operation of the above embodiment will be explained.

First, the photosensitive drum (OPC drum) 1 is fixed with a general-purpose lathe chuck 11, 12 and rotated at high speed.

Next, the first coating film stripping tool 2A is vertically pressed against the stripping portion of the OPC drum 1. This cutting tool 2A is equipped with a spring as shown in Figure 2, so uneven cutting due to eccentricity of the OPC drum can be eliminated by the relief effect of the spring.
Since the cutting tool is made of ceramic, there is almost no shaving on the raw tube part, and it can be shaving evenly and cleanly. or,
By using the second paint film stripping tool 3A, O
The coating film on the inner diameter side of the PC drum 1 can be similarly scraped off.

〔Effect of the invention〕

As described above, according to the present invention, since the structure is such that an elastic tool such as a spring is applied to the peeled part of the end face of the rotated OPC photosensitive drum, the coating film of the OPC photosensitive drum can be scraped off smoothly and quickly. At this time, uneven cutting due to the eccentricity of the photosensitive drum is removed by the action of a spring, etc.
The escaping effect of the chips works, and it is possible to scrape evenly and evenly without being affected by eccentricity, there is no problem with defects when using solvents, and there is no drying process after peeling, making it easy to peel the end face at low cost. It can be performed.

2B...Press spring, 3B...Tension spring, 2C/Reciprocating movement setting section, 5...Drum support shaft, 6...Bite holder, 11...・・・・・・
・General-purpose lathe shaft, 12... General-purpose lathe tailstock.

Applicant: Nippon Electric Co., Ltd. Agent: Patent attorney, Isamu Takahashi

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a plan view showing a coating stripping tool for edges, and FIG. 3 is a plan view showing a coating stripping tool for the inner diameter. be.

Claims (1)

[Claims] (1) A support shaft that fixes and supports a cylindrical photosensitive drum from the inside, first and second support members that support both ends of this support shaft, and a and a drive mechanism for rotating the support shaft together with the photosensitive drum, and a side end of the photosensitive drum is equipped with a bite mechanism for peeling off the coating film on the edge surface. , a tool for removing paint film, a tool holder for supporting the tool for removing paint film, a spring installed in the tool holder to press the tool for removing paint film toward the outside, and a spring for pressing the tool for removing paint film toward the outside; 1. An end face peeling device for a photosensitive drum, comprising a reciprocating movement setting section for setting a distance in which the cutting tool reciprocates against the spring.