JP2010105682A - Method of packing electrophotographic photoreceptor and electrophotographic photoreceptor packed using this method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor packing method for packing an electrophotographic photoreceptor with a photoreceptor layer containing a photoconductive material without using an adhesive tape. <P>SOLUTION: In the electrophotographic photoreceptor packing method, a sheet of black lightproof paper 1 is wound around an electrophotographic photoreceptor 8 provided with a photoreceptor layer formed of a photoconductive material on the surface of a cylindrical substrate for packing. The paper 1 is wound around the receptor 8 after the paper 1 is curled in advance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for packing an electrophotographic photosensitive member using black shading paper for protecting a cylindrical electrophotographic photosensitive member.

  An electrophotographic photosensitive member used in an electrophotographic apparatus employing the Carlson process method or the like is configured by forming a photosensitive layer containing a photoconductive material on the surface of a cylindrical substrate. Since this photosensitive layer has an important role such as converting an optical image into an electrostatic latent image in an electrophotographic process, it is necessary to protect the photosensitive layer from mechanical damage and deterioration due to external light. For this reason, a method of winding a black light-shielding paper and packing the electrophotographic photosensitive member provided with this photosensitive layer is generally employed.

  On the other hand, an electrophotographic apparatus employing the above-described Carlson process method or the like is usually provided with a charger, a developer, a cleaner, and the like. As this cleaner, a cleaning blade using a plate-like rubber material is widely adopted because of its simple configuration and high cleaning efficiency.

  In the above-described electrophotographic apparatus, the cleaning blade is used with its end side in contact with the surface of the electrophotographic photosensitive member, and the contacting portion is directed in the direction opposite to the rotation direction of the electrophotographic photosensitive member. is set up. Therefore, there is a weak point that the cleaning blade is easily reversed during the first operation in the electrophotographic apparatus.

  Therefore, in order to prevent this blade reversal, it is effective to interpose a lubricating powder at the contact portion between this blade and the electrophotographic photosensitive member. Therefore, lubrication on the surface of the electrophotographic photosensitive member is effective. The lubricating powder is applied to the black light-shielding paper that is a protective sheet of the electrophotographic photosensitive member.

  Therefore, in the electrophotographic apparatus employing the above-mentioned Carlson process method, the electrophotographic photosensitive member having the photosensitive layer is protected from mechanical damage, deterioration due to external light, etc. From the viewpoint of preventing the cleaning blade from reversing when the photographic photosensitive member is first operated, a black shading paper coated with a lubricating powder is wrapped around the electrophotographic photosensitive member and packaged, or the electrophotographic photosensitive member is wound. Many methods have been adopted in which a black light-shielding paper is wrapped around an electrophotographic photosensitive member having a lubricating powder coated on the surface of the body.

A method of wrapping a black light-shielding paper coated with a lubricating powder around an electrophotographic photosensitive member, or a black light-shielding paper on an electrophotographic photosensitive member coated with a lubricating powder on the surface of the electrophotographic photosensitive member. In any of the methods of wrapping and packing, black high quality paper is often used as the black shading paper. In addition, a member having an adhesive substance such as a seal or a tape is generally used for fixing the wound black light shielding paper (see, for example, Patent Document 1).
JP 2005-195853 A

  However, in the electrophotographic photosensitive member packaging method described in Patent Document 1, the wound black shading paper is fixed by a member having an adhesive substance such as a seal or a tape. When the black shading paper is removed from the electrophotographic photosensitive member in a state where it is stored or when the black shading paper is stored for a long time at high temperature and high humidity, the adhesive of the adhesive tape for fixing the black shading paper is an electrophotographic photosensitive member. There is a problem that it tends to adhere to the surface.

  That is, an adhesive tape is usually used for wrapping black light-shielding paper around the electrophotographic photosensitive member and fixing it. And when such an adhesive tape is peeled off and the black shading paper is removed, the adhesive (main agent or tackifier) in the adhesive tape, or the low molecular weight substance contained in the adhesive is an electrophotographic photoreceptor. It is a problem that it adheres to the surface and causes image defects.

  In addition, when stored at high temperature and high humidity for a long time, the adhesive (main agent or tackifier) in the adhesive tape or the low molecular weight substance contained in the adhesive penetrates the black shading paper, and the electrophotographic There is also a problem that it adheres to the surface of the photoreceptor and causes image defects. Therefore, it has been desired to pack the electrophotographic photosensitive member with black light shielding paper without using an adhesive tape for fixing the black light shielding paper.

  Accordingly, the present invention has been made in order to address the above-described demands, and is an electrophotographic photosensitive material for packaging an electrophotographic photosensitive member having a photosensitive layer containing a photoconductive material without using an adhesive tape. It is intended to provide a body packing method.

  The electrophotographic photosensitive member packing method of the present invention is an electrophotographic photosensitive member packing method in which a black light-shielding paper is wrapped around an electrophotographic photosensitive member having a photosensitive layer formed of a photoconductive material on the surface of a cylindrical substrate. It is. This electrophotographic photosensitive member packing method is characterized in that curls (curves) are formed in advance on a black light-shielding paper, and then the black light-shielding paper is wound around the electrophotographic photosensitive member.

  According to this electrophotographic photosensitive member packing method, the electrophotographic photosensitive member can be packed without using an adhesive tape by forming a curl of the outer diameter of the photosensitive member as described later on the black shading paper in advance. can do.

  In addition, since the operation of removing the adhesive tape is not performed to remove the packaging, it is possible to prevent problems caused by the adhesive of the adhesive tape adhering to the electrophotographic photosensitive member.

  Accordingly, by packing the electrophotographic photosensitive member by the above-described electrophotographic photosensitive member packing method, not only the image characteristics in the image forming apparatus to which the electrophotographic photosensitive member is mounted can be improved, but also the electrophotographic It is possible to remarkably improve the working efficiency in packing and replacement of the photoreceptor.

  In the electrophotographic photosensitive member packing method described above, it is preferable that the black light shielding paper is brought into contact with a cylindrical heating roller to heat the black light shielding paper to form a curl on the black light shielding paper.

  By doing this, curl can be reliably formed on the black shading paper, and curling that can wrap the black shading paper around the electrophotographic photosensitive member without using an adhesive member such as an adhesive tape, Can be formed. In addition, when stored in that state, the electrophotographic photosensitive member can be packaged without being rewound and capable of holding the wound state for a long period of time. Further, the curl can be easily formed on the black shading paper in a short time.

  Moreover, in the electrophotographic photoreceptor packaging method using the heating roller, it is preferable that the heating temperature of the black light shielding paper by the heating roller is 120 ° C. or more and 230 ° C. or less.

  The reason is that when heated at less than 120 ° C., the black shading paper is not sufficiently curled and it is difficult to pack the electrophotographic photosensitive member. Further, when heated at a temperature exceeding 230 ° C., the black shading paper 1 may be burnt.

  In the electrophotographic photosensitive member packing method using the heating roller, when the diameter of the electrophotographic photosensitive member is R and the diameter of the heating roller is r, the diameter r of the heating roller is R / 6 ≦ r ≦ R. It is preferable to satisfy / 2.

  The reason for this is that when the black light-shielding paper is curled using a heating roller having a heating roller diameter r of r> R / 2, the black light-shielding paper is not sufficiently curled and the electrophotographic photosensitive member is packed. This is because it becomes difficult. Further, when the black light-shielding paper is curled using a heating roller having a heating roller diameter r of r <R / 6, the black light-shielding paper is very strong and curls itself. This is because the workability of packing the package becomes extremely poor.

  In addition, in the electrophotographic photosensitive member packing method using the heating roller, when a roll-shaped black light shielding paper is used, the curl direction of the curl of the black light shielding paper and the curl formed by the contact of the heating roller are used. It is preferable that the black light-shielding paper is brought into contact with the heating roller so that the directions are the same.

  The reason is that if this direction is reversed, the curl of the curl and the curl formed by the contact with the heating roller cancel each other, and only the curl force formed by the heating roller can be wound around the electrophotographic photosensitive member. It is because it becomes difficult to attach.

  In each of the above electrophotographic photosensitive member packing methods, after the curl is formed on the black light-shielding paper in advance, before the black light-shielding paper is wound around the electrophotographic photosensitive member, the roller to which the lubricating powder is attached is attached to the black light-shielding paper. It is preferable to apply the lubricating powder to the black shading paper by bringing it into contact with the shading paper.

  In this way, by applying the solid lubricant onto the black light-shielding paper, it is possible to prevent the cleaning blade provided in the image forming apparatus on which the electrophotographic photosensitive member is mounted from being inverted. Further, since it is possible to save the trouble of applying a solid lubricant to the electrophotographic photosensitive member in advance, the working efficiency can be improved.

  In addition, any one of the above-described electrophotographic photosensitive member packing methods can be used to pack an electrophotographic photosensitive member so that the electrophotographic photosensitive member is a packed electrophotographic photosensitive member.

  According to the present invention, the electrophotographic photosensitive member can be packed without using an adhesive member such as an adhesive tape by previously forming a curl on the black shading paper.

  In addition, since the operation of removing the adhesive tape is not performed to remove the packaging, it is possible to prevent problems caused by the adhesive of the adhesive tape adhering to the electrophotographic photosensitive member.

  Therefore, by packing the electrophotographic photosensitive member by the above-described electrophotographic photosensitive member packing method, not only the image characteristics in the image forming apparatus to which the electrophotographic photosensitive member is mounted can be improved, but also the electrophotographic photosensitive member. The work efficiency in body packing and replacement can be remarkably improved.

  Next, the electrophotographic photosensitive member packing method in the embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a packing process of the electrophotographic photosensitive member packing method in the present embodiment, where (a) shows a state immediately before packing, and (b) shows a state immediately after packing. Yes.

  The electrophotographic photoreceptor packaging method in the present embodiment is a packaging method in which a black light-shielding paper 1 curled in advance is wound around the electrophotographic photoreceptor 8 as shown in FIG. The electrophotographic photosensitive member packing method in this embodiment is characterized in that an adhesive member such as an adhesive tape is not used for fixing the black light shielding paper 1 as will be described later.

  FIG. 2 is an explanatory view for explaining a method for concretely realizing the above-described electrophotographic photosensitive member packing method. In the electrophotographic photoreceptor packaging method in the present embodiment, an electrophotographic photoreceptor packaging apparatus 10 as shown in FIG. 2 is used. FIG. 3 is a perspective view of a later-described photoreceptor holding member 6 provided in the electrophotographic photoreceptor packaging apparatus 10. FIG. 4 is also a perspective view showing the state of operation of a lubricating powder coating process 5 described later provided in the electrophotographic photosensitive member packing apparatus 10.

  In FIG. 2, the electrophotographic photoreceptor packing apparatus 10 includes a black paper shading paper drum 9, two paper feed rollers 2a, a heating roller 3, a pair of paper feed rollers 2b, a paper feed guide 4, and a lubricating powder adhering portion. 5, a photosensitive member holding member 6 and a cutter 7. In FIG. 2, the left direction is the front and the right direction is the rear.

  The electrophotographic photosensitive member packing apparatus 10 is configured as follows. That is, the photosensitive member holding member 6 holding the cylindrical electrophotographic photosensitive member 8 so that the cylindrical central axis of the electrophotographic photosensitive member 8 is horizontal, and the heating roller 3 having a horizontal central axis. Are spaced apart from each other and face each other, and the photosensitive member holding member 6 is disposed forward and the heating roller 3 is disposed rearward.

  The motor shaft is coupled to the central axis of the electrophotographic photosensitive member 8 held by the photosensitive member holding member 6, and the electrophotographic photosensitive member 8 is rotated counterclockwise in FIG. 2 by this motor. .

  In addition, a conveyance path connecting the upper end of the heating roller 3 and the upper end of the electrophotographic photosensitive member 8 held by the photosensitive member holding member 6 is formed between the photosensitive member holding member 6 and the heating roller 3. Has been. This conveyance path is used to convey the black paper shading paper 1.

  On the heating roller 3 side in the middle of the transport path, a pair of paper feed rollers 2b are arranged above and below the transport path, and on the photoreceptor holding member 6 side in the middle of the transport path. Is provided with a lubricating powder coating step 5 having a pair of rollers arranged one above the other.

  Further, between the heating roller 3, the pair of paper feed rollers 2 b, the lubricating powder coating process 5, and the photosensitive member holding member 6, the transport path is along the transport path of the black paper shading paper 1. A pair of paper feed guides 4 are arranged on the top and bottom of the sheet, respectively.

  Further, below the heating roller 3, a paper feeding roller 2a that contacts the lower end and the upper end of the heating roller 3 is disposed, and another paper feeding roller 2a is disposed in front of the paper feeding roller 2a. A black paper shading paper drum 9 is disposed below the other paper feeding roller 2a. A black paper shading paper 1 is wound around the black paper shading paper drum 9 with the inner surface of the black paper shading paper 1 facing the central axis of the black paper shading paper drum 9.

  In the electrophotographic photosensitive member packing apparatus 10 described above, the black paper light-shielding paper 1 drawn out from the black paper light-shielding paper drum 9 is placed on the outer surface of the black paper light-shielding paper 1 at an angle of the other paper feeding roller 2a. While passing from the upper end to the upper end in contact, it proceeds toward the heating roller 3.

  Then, the black light shielding paper 1 passes through the contact point where the heating roller 3 and the paper feed roller 2 a are in contact, and the inner surface of the black paper light shielding paper 1 is in contact with the heating roller 3 over a half circumference of the heating roller 3. Then it is wrapped and passed. At this time, the black paper shading paper 1 is overheated, and curls are formed on the black paper shading paper 1.

  The black paper shading paper 1 wound in contact with the heating roller 3 passes through the paper feed guide 4, the pair of paper feed rollers 2 b, the paper feed guide 4, and the lubricating powder coating process 5, and then the black paper is shielded. Lubricating powder is applied to the inner surface of the paper 1, wound around the electrophotographic photosensitive member 8 held by the photosensitive member holding member 6 through the paper feed guide 4, and then cut. Packaging for the photoconductor 8 is completed.

  That is, the electrophotographic photosensitive member packing apparatus 10 mainly includes the black paper shading paper drum 9 (rolled black paper shading paper holding means) and the black paper shading paper 1 drawn from the black paper shading paper drum 9. The heating roller 3 (roller-like heating means) that is heated by contact and heated to form a curl and the electrophotographic photosensitive member 8 are held and rotated, and the black light shielding paper 1 on which the curl is formed is transferred to the electrophotographic photosensitive member. A photosensitive member holding member 6 (photosensitive member holding means) that winds around the surface of the electrophotographic photosensitive member 8 at least once around the body 8, and a cutter 7 that cuts the black paper shading paper 1 that has been wound. Black paper shading paper cutting means).

  Next, the electrophotographic photosensitive member packing method in the present embodiment using the electrophotographic photosensitive member packing apparatus 10 shown in FIG. 2 will be specifically described. In the electrophotographic photosensitive member packing apparatus 10 described above, first, the black light shielding paper drum 9 of the black light shielding paper 1 having the same width as the cylindrical length of the electrophotographic photosensitive member 8 is prepared and conveyed on the paper feed roller 2a. .

  Next, the black light-shielding paper 1 is heated by being brought into contact with the cylindrical heating roller 3 to form a curl on the black light-shielding paper 1. Then, the black light shielding paper 1 is conveyed to the lubricating powder coating process 5 using the paper feeding guide 4 and a pair of paper feeding rollers 2 b, and the lubricating powder is applied to the black light shielding paper 1.

  Further, when the black light shielding paper 1 is guided to the outer surface of the electrophotographic photosensitive member 8 fixed to the photosensitive member holding member 6, the electrophotographic photosensitive member 8 starts to be wound only by the curling force of the curled black light shielding paper 1.

  Finally, when the black light-shielding paper 1 is wound to such a length that the winding start portion of the black light-shielding paper 1 overlaps the winding end portion, the black light-shielding paper 1 is cut by the cutter 7 and the black light-shielding paper 1 The winding around the photoconductor 8 is completed.

  Next, each component in the electrophotographic photosensitive member packing apparatus 10 will be described, and the above-described electrophotographic photosensitive member packing method will be described more specifically.

<Black shading paper 1>
The black shading paper 1 used in the above-described electrophotographic photosensitive member packing method has the same width as the cylinder of the electrophotographic photosensitive member 8. The thickness of the black light-shielding paper 1 is determined in consideration of the mechanical protection of the electrophotographic photosensitive member 8 and the light-shielding property against external light, can be easily cut with a cutter, and can be curled with a heating roller. It is determined taking into account as much as possible.

  From this viewpoint, it is preferable that the thickness of the black light-shielding paper 1 is in the range of 0.05 to 0.5 mm. Further, when the thickness of the black light-shielding paper 1 is less than 0.05 mm, it may be difficult to sufficiently exhibit mechanical protection and light-shielding properties for the electrophotographic photosensitive member 8. If the thickness of the black light-shielding paper 1 exceeds 0.5 mm, the black light-shielding paper 1 serving as a light-shielding protective member is somewhat difficult to cut, and the curl of the black light-shielding paper 1 and the electrophotographic photosensitive member 8 are used. The workability is reduced, for example, because it becomes impossible to smoothly pack. Therefore, in consideration of such points, it is still more preferable that the thickness of the black light-shielding paper be in the range of 0.08 to 0.3 mm.

  Further, the shape of the black light-shielding paper 1 is a roll-like shape like the black paper light-shielding paper drum 9 described above in order to continuously curl the black light-shielding paper 1 and package the electrophotographic photosensitive member 8. It is preferable to use a continuous shape.

  However, when the roll-shaped black light-shielding paper 1 is used, the curl direction of the curl of the black light-shielding paper 1 existing in the roll shape (curl direction 11 of the black paper light-shielding paper in FIG. 2) and the electrophotographic photosensitive member Pay attention to the direction of conveyance of the roll-shaped black shading paper 1 so that the direction of curl formed by contact with the heating roller 3 in the packing device 10 (curl direction 12 in the heating roller in FIG. 2) is not reversed. There is a need.

  If this direction is reversed, the curl of the roll-shaped black shading paper 1 and the curl formed by contact with the heating roller 3 in the electrophotographic photosensitive member packing apparatus 10 are offset, and the heating roller 3 This is because it is difficult to wind the electrophotographic photosensitive member 8 only with the curl force formed by the above.

  In general, the curl of the curl is strong near the core (center portion) of the roll-shaped black shading paper 1, and the curl of the curl becomes weak when it is away from the core. However, in the above-described electrophotographic photosensitive member packing method, there is no need to consider the size of the curl of the curl that originally exists.

  The reason is that, by using the above-described electrophotographic photosensitive member packing method, even the black light-shielding paper 1 that is flat and has no curl curl is in contact with the heating roller 3 in the electrophotographic photosensitive member packing apparatus 10. Thus, a sufficient curling force for packing the electrophotographic photosensitive member 8 can be obtained, so that the electrophotographic photosensitive member 8 can be removed even in a portion where the curl of the curl away from the core of the roll-shaped black light shielding paper 1 is weak. This is because a sufficient curling force can be obtained for packing.

  Further, at the portion where the curl of the curl near the core (center) of the roll-shaped black light shielding paper 1 is strong, the curl formed by contact between the curl of the curl and the heating roller 3 in the electrophotographic photosensitive member packing method described above. As a result, a sufficient curling force capable of packing the electrophotographic photosensitive member 8 can be obtained.

<Paper feed rollers 2a, 2b>
The paper feed roller 2 a has a function of transporting the black light-shielding paper 1 to the heating roller 3, and the pair of paper feed rollers 2 b is a photosensitive member holding the electrophotographic photosensitive member 8 with the black light-shielding paper 1. It has a function of conveying to the body holding member 6.

<Heating roller 3>
The heating roller 3 has a function of forming a curl on the black light shielding paper 1 by bringing the black light shielding paper 1 into contact with the heating roller 3. By this function, the curl can be reliably formed on the black light-shielding paper 1, and the curl capable of winding the black light-shielding paper 1 around the electrophotographic photosensitive member 8 without using an adhesive member such as an adhesive tape is formed. can do. Further, the curl can be formed on the black light-shielding paper 1 with a simple apparatus and in a short time.

  The heating of the black light shielding paper 1 by the heating roller 3 for forming the curl on the black light shielding paper 1 is preferably performed at 120 ° C. or higher and 230 ° C. or lower. The reason is that when heated below 120 ° C., the black light shielding paper 1 is not sufficiently curled, and it becomes difficult to pack the electrophotographic photosensitive member 8. Further, when heated at a temperature exceeding 230 ° C., the black shading paper 1 may be burnt.

  As for the diameter of the heating roller 3, if the diameter of the cylindrical electrophotographic photosensitive member 8 to be packed is R and the diameter of the heating roller 3 is r, the diameter r of the heating roller 3 is R / 6 ≦ r ≦. It is preferable to satisfy R / 2.

  The reason is that when the black light-shielding paper 1 is curled using the heating roller 3 having a diameter r of the heating roller 3 where r> R / 2, the black light-shielding paper 1 is not sufficiently curled, and the electrophotographic photosensitive member. This is because it becomes difficult to pack 8. Also, when the black light shielding paper 1 is curled using the heating roller 3 having a diameter r of the heating roller 3 of r <R / 6, the curl of the black light shielding paper 1 is very strong and curls itself. This is because the workability for packing the electrophotographic photosensitive member 8 is extremely deteriorated.

  The heating time of the black light shielding paper 1 by the heating roller 3 is preferably 0.5 seconds or more. In the case of heating for less than 0.5 seconds, curling of the black light-shielding paper 1 is not sufficient, and it becomes difficult to pack the electrophotographic photosensitive member 8.

  Regarding the heating roller 3, as long as the above-described conditions are satisfied, the material, shape, and the like of the heating roller 3 may be any.

<Paper feed guide 4>
The paper feed guide 4 contacts the heating roller 3 and curls the black light-shielding paper 1 to be curled in the curled direction when the electrophotographic photosensitive member 8 is transported to the place where it is packed. A guide for guiding to the electrophotographic photosensitive member 8 held by the photosensitive member holding member 6 which is a destination.

<Lubricating powder application process 5>
The lubricating powder coating step 5 is a step of applying the lubricating powder to the black light shielding paper 1 by bringing the roller to which the lubricating powder is adhered into contact with the black light shielding paper 1 (see FIG. 4). The material and shape of the roller used in this lubricating powder application process 5 are any as long as an appropriate amount of lubricating powder can be applied to the black shading paper 1. Also good. As the lubricating powder, a well-known material such as polyvinylidene fluoride is used.

  By applying the lubricant powder to the black light-shielding paper 1 by the lubricating powder coating process 5, the cleaning blade provided in the image forming apparatus to which the electrophotographic photosensitive member 8 is mounted is prevented from being reversed. be able to. Further, since it is possible to save the trouble of previously applying the solid lubricant to the electrophotographic photosensitive member 8, the working efficiency can be improved.

<Photoreceptor holding member 6>
The photosensitive member holding member 6 has a function of holding and rotating the electrophotographic photosensitive member 8 in the electrophotographic photosensitive member packing apparatus 10. In the electrophotographic photosensitive member packing device 10, it is necessary to hold and rotate the electrophotographic photosensitive member 8 in order to wind the curled black light shielding paper 1 around the entire outer surface of the electrophotographic photosensitive member 8. It is.

<Cutter 7>
The cutter 7 conveys the curled black shading paper 1 and winds it around the entire outer surface of the electrophotographic photosensitive member 8, and then the length is such that the winding start portion and the winding end portion overlap each other. It has a function of cutting the light shielding paper 1. The length of the black light-shielding paper 1 in the winding direction may be long enough to be wound around the electrophotographic photosensitive member 8 at least once so as to cover the photosensitive layer of the electrophotographic photosensitive member 8. Specifically, in the electrophotographic photosensitive member 8 having a diameter of 30 mm, the value is preferably within a range of 100 mm to 150 mm.

<Electrophotographic photoreceptor 8>
The electrophotographic photosensitive member 8 packed by the above-described electrophotographic photosensitive member packing method has a cylindrical shape. The type of the electrophotographic photosensitive member 8 packed by the above-described electrophotographic photosensitive member packing method is not limited. As the electrophotographic photosensitive member 8, a laminated electrophotographic photosensitive member formed by laminating a charge generation layer and a charge transport layer on a support located at the center of the electrophotographic photosensitive member 8, or charge generation The above-described electrophotographic photosensitive member packing method can be used for any single-layer type electrophotographic photosensitive member in which a material and a charge transporting material are mixed.

  In the description of the electrophotographic photosensitive member packing method in the present embodiment described above, a standard electrophotographic photosensitive member 8 that does not include a flange is used as the electrophotographic photosensitive member 8, but as shown in FIG. The above-described electrophotographic photosensitive member packing method in the present embodiment can be applied to the electrophotographic photosensitive member 8 provided with the flange 8a as it is. 5A and 5B are perspective views showing a packing process for the electrophotographic photosensitive member 8 provided with the flange 8a. FIG. 5A shows a state immediately before packing, and FIG. 5B shows a state immediately after packing. ing.

  Next, in order to determine the effect of the electrophotographic photosensitive member packing method in the present embodiment described above, a storage experiment was performed using the electrophotographic photosensitive member 8 packed by the above-described electrophotographic photosensitive member packing method. The results of this preservation experiment will be described below. Note that the electrophotographic photosensitive member packing method in the present embodiment described above is not limited by the setting conditions of the storage experiment.

<Experiment 1>
In Experiment 1, as the electrophotographic photosensitive member 8, an organic electrophotographic photosensitive member in which a known charge generation layer and a charge transport layer were laminated on an aluminum cylindrical support having a cylindrical length of 357 mm and an outer diameter of 30 mm was used. In addition, a flat black shading paper (cony wrap, color: black, manufactured by Lintec Co., Ltd.) having a width of 357 mm was used as the black shading paper 1, but other color-quality paper (color: black, Kishu Paper) (Made by Co., Ltd.) can also be used.

  In Experiment 1, the diameter of the heating roller 3 in the electrophotographic photosensitive member packing apparatus 10 shown in FIG. 2 is set to 10 mm, the temperature is set to 180 ° C., and the black light shielding paper 1 is conveyed at a speed of 20 mm / s. A curl was formed on the paper.

  Then, after the black shading paper 1 coated with polyvinylidene fluoride as a lubricating powder is wrapped around the electrophotographic photosensitive member 8 and packed, the winding start portion and the winding end portion overlap each other at 100 mm, The black shading paper 1 was cut.

  The electrophotographic photosensitive member 8 packed with the black light-shielding paper 1 is wound on an air packing (registered trademark) from above the electrophotographic photosensitive member 8 and then subjected to high temperature and high humidity (35 ° C., 85% RH) conditions. Left for one month.

  As a result, the black light-shielding paper 1 was not rewound, and the same packing form as in the initial stage could be maintained (packing state evaluation was 100 for 100 experiments with no abnormality).

  In addition, when the electrophotographic photosensitive member 8 that had been left for one month was incorporated into an image forming apparatus and image evaluation was performed, no image abnormality was observed (as an image evaluation, no abnormality was observed for 100 experiments). Book).

<Experiment 2>
In Experiment 2, the roll-shaped black light-shielding paper 1 was installed so that the curl direction of the black light-shielding paper 1 was opposite to the curl of the roll. Except for this condition, the conditions are the same as in Experiment 1 above. In Experiment 2, as in Experiment 1, the sample was allowed to stand for 1 month under high temperature and high humidity conditions.

  As a result, the black shading paper 1 had a strong rewinding force, and it was somewhat difficult to maintain the same packing form as the initial stage (as a packing state evaluation, for 100 test pieces, 2 bad packings, abnormal None 98).

  However, since the air packing (registered trademark) was wound from above the electrophotographic photosensitive member 8, no abnormalities were found in the results of image evaluation incorporated into the image forming apparatus (as image evaluation) 100 for 100 experiments, no abnormality).

<Experiment 3>
In Experiment 2, the conditions are the same as in Experiment 1 except that polyvinylidene fluoride, which is a lubricating powder, is not applied to the black shading paper. In Experiment 3, as in Experiment 1, the sample was left for one month under high temperature and high humidity conditions.

  As a result, the black light-shielding paper 1 was not rewound, and the same packing form as in the initial stage could be maintained (packing state evaluation was 100 with no abnormality for 100 experiments).

  However, as a result of evaluating the image by incorporating it into the image forming apparatus, the cleaning blade was inverted (as the cleaning blade inversion evaluation, 5 blades were inverted and 95 were abnormal with respect to 100 experiments).

  Therefore, after applying a lubricating powder to the surface of the electrophotographic photosensitive member, it was incorporated into an image forming apparatus and image evaluation was performed. As a result, the cleaning blade was not reversed. Therefore, in Experiment 3, a result that does not cause a problem in actual use could be obtained.

  Next, in order to compare the above experiment with the result of the conventional electrophotographic photoreceptor packaging method, the following comparative experiment was performed.

<Comparison experiment 1>
In Comparative Experiment 1, the black shading paper 1 was not curled, but the black shading paper 1 was wound around the electrophotographic photosensitive member 8 and black using an adhesive tape (Fixlon tape No. 816, manufactured by Sekisui Chemical Co., Ltd.). After fixing the light shielding paper 1, the electrophotographic photosensitive member 8 was packed.

  And like the said experiment 1, it was left to stand for one month under high temperature and humidity conditions. As a result, the black light-shielding paper 1 was not rewound, and the same packing form as in the initial stage could be maintained (packing state evaluation was 100 with no abnormality for 100 experiments).

  However, when the black light-shielding paper 1 was removed from the electrophotographic photosensitive member 8 after being left for one month and incorporated in an image forming apparatus to evaluate the image, the adhesive of the adhesive tape adhered to the electrophotographic photosensitive member 8. As a result, image abnormalities were observed (as an image evaluation, there were 88 abnormalities and 12 abnormalities for 100 experiments).

<Comparison experiment 2>
In Comparative Experiment 2, the black shading paper 1 used in Experiment 1 was tried to be packed on the electrophotographic photosensitive member 8 without curling. However, simply wrapping the black light-shielding paper 1 around the electrophotographic photosensitive member 8 cannot fix the black light-shielding paper 1 and cannot be packed with air packing (registered trademark) in the subsequent process. .

  As described above, according to the electrophotographic photosensitive member packing method in the present embodiment, the electrophotographic photosensitive member 8 can be packed without using an adhesive tape by forming curls on the black light-shielding paper 1 in advance. it can.

  In addition, since the operation of removing the adhesive tape is not performed to remove the packaging, it is possible to prevent problems caused by the adhesive of the adhesive tape adhering to the electrophotographic photosensitive member 8. .

  Therefore, if the electrophotographic photosensitive member 8 is packed by the electrophotographic photosensitive member packing method in the present embodiment, the image characteristics in the image forming apparatus to which the electrophotographic photosensitive member 8 is mounted can be improved. Therefore, the working efficiency in packing and replacement of the electrophotographic photosensitive member 8 can be remarkably improved.

(A) of the electrophotographic photosensitive member packing method in the present embodiment is a state immediately before packing, and (b) is a perspective view showing a state immediately after packing. It is explanatory drawing of the electrophotographic photoreceptor packing method in this Embodiment. It is explanatory drawing of the electrophotographic photoreceptor packing method in this Embodiment. It is the perspective view which showed the operation state of the lubricating powder application | coating process of the electrophotographic photosensitive member packing apparatus used with the electrophotographic photosensitive member packing method in this Embodiment. (A) of the electrophotographic photosensitive member packing method in the present embodiment for the electrophotographic photosensitive member provided with a flange is a perspective view showing a state immediately before packing, and (b) is a perspective view showing a state immediately after packing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Black paper shading paper 2a Paper feed roller 2b A pair of paper feed rollers 3 Heating roller 4 Paper feed guide 5 Lubricating powder application process 6 Photoconductor holding member 7 Cutter 8 Electrophotographic photoconductor 8a Flange 9 Black paper shading paper drum 10 Electrophotographic photoreceptor packing device 11 Curling direction of black paper shading paper 12 Curling direction on heating roller

Claims (7)

An electrophotographic photosensitive member packing method in which a black light-shielding paper is wrapped around and packed in an electrophotographic photosensitive member having a photosensitive layer formed of a photoconductive material on the surface of a cylindrical substrate,
An electrophotographic photoreceptor packing method comprising curling the black shading paper in advance and then winding the black shading paper around the electrophotographic photoreceptor. The electrophotographic photosensitive member packing method according to claim 1,
An electrophotographic photosensitive member packing method in which the black light shielding paper is heated by being brought into contact with a cylindrical heating roller to form the curl on the black light shielding paper. In the electrophotographic photosensitive member packing method according to claim 2,
The electrophotographic photosensitive member packing method in which the heating temperature of the black light shielding paper by the heating roller is 120 ° C. or higher and 230 ° C. or lower. In the electrophotographic photosensitive member packing method according to claim 2 or 3,
An electrophotographic photosensitive member packing method in which the diameter r of the heating roller 3 satisfies R / 6 ≦ r ≦ R / 2, where R is the diameter of the electrophotographic photosensitive member and r is the diameter of the heating roller. In the electrophotographic photosensitive member packing method according to any one of claims 2 to 4,
When the roll-shaped black shading paper is used, the black shading paper is placed so that the curl direction of the curl of the black shading paper is the same as the curl direction formed by the contact of the heating roller. A method for packing an electrophotographic photosensitive member in contact with the heating roller. In the electrophotographic photosensitive member packing method according to any one of claims 1 to 5,
After the curl is formed on the black light-shielding paper in advance, before the black light-shielding paper is wound around the electrophotographic photosensitive member, the black light-shielding paper is brought into contact with the black light-shielding paper by bringing a roller to which lubricating powder is attached An electrophotographic photoreceptor packaging method in which the lubricating powder is applied to paper.   An electrophotographic photosensitive member packed by using the electrophotographic photosensitive member packing method according to claim 1.

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