JPH1072075A - Method for packing up photoreceptor for electrophotography - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid decrease in surface quality of a photoreceptor by preventing a pressure-sensitive adhesive tape remaining on the winding end part of a light shielding sheet from sticking on or being brought into contact with a photosensitive layer when a package of the photoreceptor is opened. SOLUTION: In a method for packing up a photoreceptor for electrophotoraphy wherein a light shielding sheet being longer than the length of the outer periphery of a photoreceptor 1 is wound for light shielding of a photosensitive layer on the outer surface of the photoreceptor 1, when the winding end part 2c of the wound light shielding sheet 2 is fixed, a pressure-sensitive adhesive tape 3 provided with a peeling-off part 3a with no pressure-sensitive adhesive agent on one end is used and after another end side of the tape 3 is bonded on the winding part 2d on the outer face side on the lower side of the winding end part 2c of the light shielding sheet 2, the pressure-sensitive adhesive part on the side provided with the peeling-off part 3a of the tape 3 is bonded on the outer face side of the winding end part 2c to fix the light shielding sheet 2 on the outer surface of the photoreceptor 1. In addition, the peripheral side of the light shielding sheet 2 has a length being at least the length of a sum of the outer peripheral length of the photoreceptor 1 and the length of the tape 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packing a photosensitive member used in an electrophotographic apparatus.

[0002]

2. Description of the Related Art A photosensitive member used in an electrophotographic apparatus is formed by forming a photosensitive layer having photoconductivity on the surface of a cylindrical substrate, and this photosensitive layer converts an optical image in an electrophotographic process to an electrostatic latent image. In order to protect the photosensitive layer from mechanical damage, deterioration due to strong light, adhesion of contaminants, etc. A packing method in which the outer surface of the photoconductor is covered with a light-shielding sheet is generally adopted.

As the material of the light-shielding sheet, black high-quality paper is frequently used, and a synthetic polymer compound such as a non-conductive or conductive synthetic resin film is sometimes used. In addition, it is common to use an adhesive tape having an adhesive on one side for fixing the wound light shielding sheet. 3A and 3B are perspective views showing an example of a conventional method for packing a photoconductor for electrophotography. FIG. 3A shows a state immediately before packing, and FIG. 3B shows a state immediately after packing. . FIG. 4 is FIG.
It is the expanded sectional view which cut the sticking part enclosed with the circle S shown by the dotted line of (b) perpendicularly to the cylindrical axis.

An outline of a conventional packing method will be described below with reference to FIGS. First, a peripheral side 2a longer than the outer peripheral length of the photoreceptor 1 and a width side 2b longer than the width of the photosensitive layer formed on the outer surface of the photoreceptor 1 and shorter than the cylindrical length of the photoreceptor 1 Rectangular light shielding sheet 2 having
In the axial direction of the photoconductor 1 and the width side 2 of the light shielding sheet 2
b is arranged in parallel.

Next, the light-shielding sheet 2 is wound along the outer surface of the photoreceptor 1 without slack, and disposed so that the outer surface of the winding portion 2d overlaps the inner surface of the winding end 2c. Finally, using an adhesive tape 3 of a predetermined size having an adhesive 3b on one side and a peeling portion 3a on one end to which the adhesive does not adhere, the adhesive tape 3 is wound around the outer surface of the winding end 2c. After the side having no peeling portion 3a is attached to the outer surface of the winding end portion 2c so as to be substantially evenly bridged on the outer surface of the 2d, the peeling portion 3
a is attached to the outer surface of the winding portion 2d to form the photosensitive member 1
The light shielding sheet 2 wound around is fixed.

[0006]

When an electrophotographic photosensitive member is mounted on an electrophotographic device such as a copier, a printer, or a facsimile, the adhesive tape fixing the light-shielding sheet is peeled off to remove the photosensitive member. The light-shielding sheet covering the surface has been removed. When the light-shielding sheet is removed by the conventional packing method, the portion of the adhesive tape adhered to the outer surface of the light-shielding sheet at the winding part 2d side is peeled off by grasping the peeling portion of the adhesive tape and pulling up the light-shielding sheet. When the sheet comes off the photoreceptor and separates, the adhesive tape remaining on the outer surface of the light-shielding sheet near the winding end 2c adheres to or contacts the outer surface of the photoreceptor, contaminating the photosensitive layer and reducing the surface quality of the photoreceptor. There has been a problem that it may lead to a decrease.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to protect a photosensitive layer from contamination when unpacking an electrophotographic photoreceptor and to avoid deterioration in the surface quality of the photoreceptor. It is an object of the present invention to provide a method of packing an electrophotographic photosensitive member that can be performed.

[0008]

According to the present invention, an object of the present invention is to provide a photoreceptor formed by winding a light-shielding sheet longer than the outer peripheral length of the photoreceptor to shield the photosensitive layer on the outer surface of the cylindrical photoreceptor. In the packing method, when fixing the wound end portion of the wound light shielding sheet with the adhesive tape, use an adhesive tape provided with a peeling portion having no adhesive at one end, and use the other end side of this tape as the winding end portion of the light shielding sheet. After attaching to the outer surface side of the lower winding part side, the adhesive part at one end side of this tape is attached to the outer surface side of the winding end part, and the light shielding sheet is fixed on the outer surface of the photoconductor. Achieved. It is effective that the periphery of the light-shielding sheet has a length equal to or longer than the outer peripheral length of the photoconductor plus the length of the adhesive tape.

According to the above-mentioned packing means, when the light-shielding sheet is removed, when the peeling portion of the adhesive tape is grasped and pulled up, the portion of the adhesive tape stuck on the outer surface side of the winding end of the light-shielding sheet is peeled off, and the light-shielding is performed. The sheet comes off the photoconductor and separates. At that time, the part where the adhesive tape has been peeled off remains on the outer surface side of the winding part of the light shielding sheet, and the winding part of the light shielding sheet works so as to intervene with the outer surface of the photoreceptor. The applied adhesive tape can be prevented from adhering or contacting the outer surface of the photoreceptor. In addition, since the peripheral edge of the light-shielding sheet is longer than the outer peripheral length of the photosensitive member plus the length of the adhesive tape, the peeled-off adhesive tape does not protrude from the winding portion of the light-shielding sheet. Can be reliably prevented from adhering or contacting the outer surface of the device.

[0010]

FIG. 1 is a perspective view showing a method of packing an electrophotographic photosensitive member according to the present invention. FIG. 1A shows a state immediately before packing, and FIG. 1B shows a state immediately after packing. The state of is shown. FIG. 2 is an enlarged cross-sectional view of the sticking portion surrounded by a circle R indicated by a dotted line in FIG.

A packing method according to the present invention will be described below with reference to FIGS. First, the photosensitive member 1 has a peripheral side 2a which is equal to or longer than the length of the adhesive tape 3 added to the outer peripheral length of the photosensitive member 1, is longer than the width of the photosensitive layer formed on the outer surface of the photosensitive member 1, and Width side 2 shorter than the length of cylinder 1
A light-shielding sheet 2 having a rectangular shape b is prepared, and is arranged such that the axial direction of the photoconductor 1 and the width side 2b of the light-shielding sheet 2 are parallel.

Next, the light-shielding sheet 2 is wound along the outer surface of the photoreceptor 1 without slack, and disposed so that the outer surface of the winding portion 2d overlaps the inner surface of the winding end 2c. Finally, using an adhesive tape 3 of a predetermined size having an adhesive 3b on one side and a peeling portion 3a on one end to which the adhesive does not adhere, the adhesive tape 3 is wound around the outer surface of the winding end 2c. After the side having no peeling portion 3a is attached to the outer surface side of the winding portion 2d so as to be substantially evenly bridged on the outer surface of the winding portion 2d, the peeling portion 3
a is attached to the outer surface of the winding end 2c,
The light shielding sheet 2 wound around is fixed. (Example 1) Cylindrical length 250 (mm), outer diameter 30 (mm)
A black light-shielding sheet having a width of 245 (mm) along the outer surface of the photoreceptor and a circumference of 100 (mm) longer than the outer periphery of the photoreceptor is wound and wound on the inner surface of the winding end portion. Width 10 provided with an adhesive on one side and an exfoliation part to which the adhesive does not adhere to one end, which is disposed so that the outer surfaces of the parts overlap.
(Mm), using a high-quality paper adhesive tape with a length of 50 (mm), the adhesive tape is almost evenly bridged between the outer surface of the winding end portion and the outer surface of the winding portion, and no peeling portion is provided. Then, the light-shielding sheet wound around the photoreceptor was fixed by sticking the side having the peeling portion to the outer surface side of the winding end portion after sticking the side to the outer surface side of the winding portion. Example 2 Example 2 was the same as Example 1 except that the periphery of the light-shielding sheet was made 50 (mm) longer than the periphery of the photoconductor. Example 3 Example 3 was the same as Example 1 except that the periphery of the light-shielding sheet was longer than the outer periphery of the photoconductor by 40 (mm). Example 4 Example 4 was the same as Example 1 except that the periphery of the light-shielding sheet was longer than the outer periphery of the photoconductor by 30 (mm). Example 5 Example 5 was the same as Example 1 except that the periphery of the light-shielding sheet was longer than the outer periphery of the photoconductor by 20 (mm). Example 6 Example 6 was the same as Example 1 except that the periphery of the light-shielding sheet was longer than the outer periphery of the photoconductor by 10 (mm). (Comparative Example 1) Example 2 except that the side without the peeling portion of the adhesive tape was attached to the outer surface side of the winding end portion, and then the side with the peeling portion was attached to the outer surface side of the winding portion. The same as above.

In the above Examples 1 to 6 and Comparative Example 1, the occurrence of surface contamination caused by the adhesive tape when unpacking was examined for each of ten photoconductors. Table 1 shows the results.

[0014]

[Table 1] From the above results, according to the packing method of the present invention, the occurrence of surface contamination of the photoconductor caused by the adhesive tape at the time of unpacking indicates that the periphery of the light-shielding sheet is the length of the adhesive tape to the outer peripheral length of the photoconductor. It can be seen that there is no occurrence when the length is greater than or equal to the sum of the length of the photoreceptor, and the occurrence rate increases as the circumference of the light-shielding sheet becomes shorter than the length of the outer circumference of the photoconductor plus the length of the adhesive tape. Further, it can be seen that when the sticking direction of the pressure-sensitive adhesive tape is opposite to that of the present invention, the rate of occurrence of surface contamination of the photoconductor increases.

[0015]

According to the present invention, there is provided a method for packing a photoreceptor comprising a light-shielding sheet which is longer than the outer peripheral length of the photoreceptor in order to shield the photosensitive layer on the outer surface of the cylindrical photoreceptor from light. When fixing the winding end portion with an adhesive tape, use an adhesive tape having a peeling portion without adhesive at one end, and the other end side of this tape is a lower winding end portion of the light shielding sheet on the lower winding portion side. After adhering to the outer surface side, the adhesive part at one end side of the tape is adhered to the outer surface side of the winding end part to fix the light shielding sheet on the outer surface of the photoreceptor. By making the length more than the length of the outer circumference of the body plus the length of the adhesive tape, it is possible to protect the photosensitive layer from contamination when unpacking the photoconductor and avoid deterioration in the surface quality of the photoconductor Becomes

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method for packing an electrophotographic photosensitive member according to the present invention, wherein FIG. 1 (a) shows a state immediately before packing, and FIG. 1 (b).
Shows the state immediately after packing

FIG. 2 is an enlarged cross-sectional view of an adhesive tape sticking portion according to the present invention.

3A and 3B are perspective views showing an example of a conventional method for packing a photoconductor for electrophotography, in which FIG. 3A shows a state immediately before packing, and FIG.
Shows the state immediately after packing

FIG. 4 is an enlarged cross-sectional view of a conventional adhesive tape attachment portion.

[Explanation of symbols]

 1 photoreceptor 2 light-shielding sheet 2c winding end 2d winding part 3 adhesive tape 3a peeling part 3b adhesive

Claims (2)

[Claims] 1. A method for packing a photoreceptor in which a light-shielding sheet longer than the outer peripheral length of a photoreceptor is wound to shield a photosensitive layer on an outer surface of a cylindrical photoreceptor, the winding end of the wound light-shielding sheet is provided. When fixing with an adhesive tape, use an adhesive tape having a peeling part without an adhesive at one end, and affix the other end side of the tape to the outer surface side of the lower winding part side of the light shielding sheet at the lower winding part side. Wherein the light-shielding sheet is fixed on an outer surface of the photoconductor by attaching an adhesive portion at one end of the tape to an outer surface of a winding end after the tape is attached. Method. 2. The method for packing an electrophotographic photosensitive member according to claim 1, wherein the periphery of the light-shielding sheet is longer than the outer peripheral length of the photosensitive member plus the length of the adhesive tape.