JPS6250873A - Manufacture of endless photosensitive body - Google Patents

Abstract

PURPOSE:To easily prevent a belt from snaking without exerting any adverse influence upon the characteristics of a photosensitive body by adhering an adhesive tape which is adhesive at room temperature to both top and reverse end parts of the photosensitive body. CONSTITUTION:The adhesive tape 8 of several mm in width which is adhesive at room temperature is adhered to both top and reverse end parts of the endless belt photosensitive body 3 extended between rollers 1 and 2 and a engagement groove 9 wider than the tape is provided to both ends of the rollers 1 and 2. The belt is easily prevented from snaking without exerting any adverse influence upon the characteristics of the photosensitive body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing an endless belt photoreceptor, and more specifically to an endless belt in which a meandering prevention guide can be easily provided without adversely affecting the characteristics of the photoreceptor. The present invention relates to a method for manufacturing a belt photoreceptor.

[Conventional technology]

Conventionally, a technique is already known in which a guide is provided along the back edge of the photoreceptor in order to prevent an endless belt photoreceptor from meandering when passed between a driving roller and a driven roller.

A method for manufacturing such a guide is disclosed in Japanese Patent Application Laid-Open No. 57-2141.
No. 67 discloses a technique for adhering a guide made of a neoprene rubber sheet or the like to the back surface of a photoreceptor using an adhesive, and JP-A-59-2309.5L discloses a technique for adhering a guide made of a neoprene rubber sheet or the like to the back surface of a photoreceptor, and Japanese Patent Application Laid-open No. 59-2309.5L discloses a guide made of a neoprene rubber sheet or the like made of elastic plastic. A technique is disclosed in which a guide is bonded by heating and melting a hot-melt binder resin, and Japanese Patent Application Laid-Open No. 59-230950 discloses a technique in which a hot-melt binder resin itself is used as a guide.

[Problem that the invention seeks to solve]

However, when an adhesive is used as described in JP-A No. 57-214167, the adhesive work is complicated, and the adhesive may protrude from the guide, impairing the conveyance of the photoreceptor. When a solvent is used, there is a problem that the photosensitive layer may dissolve due to the solvent.

Also, JP-A-59-210950 and JP-A No. 59-23095
As described in Publication No. 1, in the case of a hot melt (a type that exhibits an adhesive effect when heat is applied), heat may be applied to the photoreceptor. Further, in order to improve adhesion, it is necessary to preheat the photoreceptor. However, when the photoreceptor is heated, there are problems in that the photosensitive layer is thermally degraded, resulting in decreased sensitivity and the so-called crabking phenomenon in which the photosensitive layer cracks during repeated use.

Therefore, a technical object of the present invention is to provide a method for manufacturing an endless belt photoreceptor in which a belt meandering prevention guide can be easily provided without adversely affecting the characteristics of the photoreceptor.

[Means for solving problems]

As a result of extensive studies, the present inventors discovered that an adhesive tape, in which a pressure-sensitive adhesive that is adhesive at room temperature is preliminarily applied to one side of a sheet-like plastic that develops elasticity, was installed on at least one end of the back side of an insulating substrate. The present inventors have discovered that the above-mentioned problems can be solved by a method for producing an endless belt photoreceptor, which is characterized by pasting along the .

Embodiments of the present invention will be described below with reference to the accompanying drawings. In this example, an adhesive tape is attached along both ends of the back side of an insulating substrate.

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a partially cutaway perspective view showing an example of the endless belt photoreceptor in use according to the present invention.

In the figure, 1 is a driving roller, 2 is a driven roller,
Reference numeral 3 denotes an endless belt photoreceptor that is hung around the driving roller 1 and the driven roller 2.

The endless belt photoreceptor 3 is, for example, ms shown in FIG.
has a structure. That is, 4 is an insulating substrate, and for example, polyester resin such as polyethylene terephthalate resin, polyamide resin, polyolefin resin, etc. are used, and among them, polyester resin is preferable. 5 is a conductive layer provided on the surface of the insulating substrate 4, such as an aluminum vapor deposited layer. 6 is an adhesive layer, for example, a vinyl chloride-vinyl acetate-maleic anhydride copolymer is used. 7 is adhesive layer 6
A photoconductive photosensitive layer provided thereon, the photosensitive material of which may be an inorganic material such as So, ZnO, amorphous silicon, an organic photoconductive material, or a combination of both. . Further, the photosensitive layer 7 may be functionally separated into a charge generation layer and a charge transport layer.

Reference numeral 8 denotes an adhesive tape in which a pressure-sensitive adhesive that is adhesive at room temperature is applied to one side of an elastic plastic sheet.

The elastic sheet plastic used for the adhesive tape 8 includes, for example, polyurethane with a hardness of about 65, high-density polyurethane foam with a hardness of about 35, and the like. The pressure-sensitive adhesive that is adhesive at room temperature is not particularly limited, and for example, a rubber-based or acrylic-based pressure-sensitive adhesive can be used.

The adhesive tape 8 is applied along both ends of the back surface of the insulating substrate, preferably within 5'ms of the tape end from one end. The width of the adhesive tape 8 is arbitrary, but a width of several widths is sufficient. Further, the thickness of the adhesive tape 8 may be set to such a degree that it can function as a guide, and may be appropriately determined within the range of 0.5 to 5 am. The adhesive tape 8 does not necessarily need to be attached to the entire circumference of the back surface of the insulating substrate, and a gap may be provided. Providing this gap means that the adhesive tape 8
This has the effect of making the bonding work easier and eliminating the dust build-up at the joint that occurs when no gap is provided.

Reference numeral 9 denotes engagement grooves provided at both ends of the drive roller 1, which have a width at least larger than the width of the adhesive tape 8. Although not shown, the driven roller 2 is also provided with a similar engagement groove. Note that if the entire ends of both rollers 1 and 2 are tapered to have the same diameter as the engagement groove 9, the engagement groove 9 is not necessarily necessary.

Although the above embodiments concern the case where the adhesive tape is attached to both ends of the back surface of the insulating substrate, the present invention is not limited to this, and the adhesive tape may be attached only to one side. In this case, an engagement groove is definitely required.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to specific examples.

First, a sheet-like photoreceptor of 250+aa+X 376.5a+m was obtained.

This photoreceptor has a 20 μm photosensitive layer formed on a 75 μm Al1 vapor-deposited polyethylene terephthalate film base.

Urethane roll stock SJ manufactured by Sumitomo 3M Co., Ltd. is placed in the longitudinal direction of both ends of the back side of the polyethylene terephthalate film.
-5832 (thickness Q, ams+) 3ms+(width)X3
I cut it to 48III11 (length), peeled off the backing paper and pasted it on.

The tape was pasted so that the ends of the tape were lam apart from both ends of the back side of the film.

Next, both joining ends of the sheet-like photoreceptor were ultrasonically welded to produce an endless belt photoreceptor.

Next, the endless belt photoreceptor was placed on a rubber drive roller and a driven roller made by A (2) (both rollers were 24-aφ and grooves were formed at both ends).

Convey speed of both rollers is 60 mm/sea, belt tension is 20
Even after continuous conveyance for 24 hours using 097B+, the belt did not meander and the condition was good.

〔Effect of the invention〕

According to the present invention, it is possible to provide a method for manufacturing an endless belt photoreceptor in which a belt meandering prevention guide can be easily provided without adversely affecting the characteristics of the photoreceptor.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a partially cutaway perspective view showing an example of the endless belt photoreceptor in use according to the present invention. In the figure, 1 is a driving roller, 2 is a driven roller, 3 is an endless belt photoreceptor, 8 is an adhesive tape, and 9 is an engagement groove. Patent Applicant Roku Konishi Photo Industry Co., Ltd. Agent Patent Attorney Nobu Sakaguchi (1988) Figure 1 (Figure 2 Procedure Amendment Writing Method) December 2, 1985 -

Claims (1)

[Claims] It is characterized in that an adhesive tape, in which a pressure-sensitive adhesive that is adhesive at room temperature is applied to one side of an elastic sheet-like plastic, is pasted along at least one end of the back side of the insulating substrate. A method of manufacturing an endless belt photoreceptor.