JP2017161742A - Cylindrical electrophotographic photoreceptor and method for packing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: a method for packing a photoreceptor, capable of preventing the surface of a photoreceptor from being scratched or deposited when removing a protective sheet and sufficiently protecting the photoreceptor regardless of a size and storage conditions since it is not necessary to require a special device in the shape of the protective sheet and specially control adhesive strength; and a cylindrical electrophotographic photoreceptor packed in such manner.SOLUTION: A protective sheet 2 is fixed to be wound on the outer surface of a cylindrical electrophotographic photoreceptor 1. A wound end portion 2a and wound stop portion 2b of the protective sheet 2 are stuck and fixed by a pressure sensitive adhesive tape 3 having the center served as a non-adhesive portion 3c and both ends served as adhesive portions 3a and 3b. The non-adhesive portion 3c of the pressure sensitive adhesive tape 3 includes fixing release means 3d for releasing the adhesive fixation of the wound end portion 2a and wound stop portion 2b.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a cylindrical electrophotographic photoreceptor and a packing method for a cylindrical electrophotographic photoreceptor.

  The electrophotographic technology is widely used and applied in the fields of copiers, printers, facsimiles and the like because it provides immediacy and high quality images.

  An electrophotographic photoreceptor used in electrophotographic technology (hereinafter sometimes simply referred to as “photoreceptor” in this specification) forms a photosensitive layer of an organic photoconductive material on the surface of a cylindrical substrate. It is the most commonly used form. This photosensitive layer has important roles such as converting an optical image into an electrostatic latent image in an electrophotographic process, so that the outer surface of the photosensitive layer is mechanically damaged, deteriorated by strong light, adherent to contaminants, etc. In order to protect from the packaging, a packaging method of covering with a protective sheet is generally employed.

  In order to protect the outer surface of the photosensitive layer from mechanical damage, deterioration due to strong light, and the like, it is common to wrap a light-shielding protective sheet around the outer surface of the photosensitive layer. Since this protective sheet is removed when the photosensitive member is incorporated into the cartridge, it is generally fixed with a member having an adhesive substance such as a seal or tape so that it can be easily attached and detached. .

However, when this protective sheet is removed, problems such as damaging the photoconductor by applying excessive force to peel off the adhesive tape, or causing the peeled adhesive tape to adhere to the surface of the photoconductor occur. There is.
Even slight scratches or deposits on the surface of the photoconductor may cause image defects. Therefore, when attaching (wrapping) the protective sheet during packaging or removing the protective sheet during unpacking, Extreme care must be taken to avoid scratches and deposits.
In order to prevent the above problems that occur when the protective sheet is removed, various proposals have been made regarding the protective sheet and the adhesive tape.

Patent Document 1 discloses a protective sheet that can be removed from a photoconductor by providing a convex portion at one end and pinching the convex portion with a finger. Patent Documents 2 to 4 disclose a protective sheet that can be removed by preliminarily performing a tearing process and tearing off a part of the protective sheet.
However, in such a method of processing the protective sheet itself, it is necessary to prepare a sheet protective sheet that has been cut and processed in advance, and it is necessary to prepare a plurality of types of protective sheets for each size of the photoreceptor. .

As a method for preventing the above problems by devising an adhesive tape, Patent Documents 5 to 6 disclose protective sheets that define the adhesive strength of an adhesive.
However, the method for defining the adhesive force has a problem that it is difficult to manage the adhesive force because it is necessary to consider a change with time of the adhesive force under various storage conditions (temperature, humidity, etc.).

  Further, Patent Document 7 discloses a method for packing a photoreceptor using an adhesive tape having a peeling portion without an adhesive at one end. In the method of Patent Document 7, there may be a problem that the peeled portion is caught around when the photosensitive member is fixed.

  Since there are various sizes and storage conditions of the photoreceptor, such a known technique is insufficient and there is room for improvement.

Japanese Utility Model Publication No. 6-50062 JP-A-60-114893 JP 2001-255780 A JP 2008-009081 A JP-A-10-167340 JP 2002-160785 A Japanese Patent Laid-Open No. 10-072075

  The present invention has been made in view of the above-described background art, and the problem is that the surface of the photoreceptor is less likely to be scratched or attached when the protective sheet is removed, and no special device is required for the shape of the protective sheet. In addition, since it is not necessary to manage the adhesive strength specially, regardless of the size and storage conditions, a method for packing a photoconductor that can sufficiently protect the photoconductor, and a cylindrical electrophotographic photosensor packed in such a manner. To provide a body.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors use an adhesive tape in which both ends are adhesive portions and the center is a non-adhesive portion, and the non-adhesive portion is provided with a fixing release means. If the protective sheet is adhesively fixed, it is very easy to remove the protective sheet when unpacking, and the adhesive part remains on the protective sheet as it is to prevent the adhesive from adhering to the photoconductor. As a result, it has been found that image defects due to scratches and deposits on the surface of the photoreceptor due to handling during unpacking can be prevented, and the present invention has been completed.

  That is, the present invention is a cylindrical electrophotographic photosensitive member fixed in a state where a protective sheet for protecting the photosensitive layer is wound on the outer surface, and the circumferential side of the protective sheet is the cylinder. It is longer than the outer perimeter of the electrophotographic photoconductor, and the winding end and the winding stop of the protective sheet are adhered by an adhesive tape having a non-adhesive portion at the center and adhesive portions at both ends. Of the two adhesive portions at both ends of the adhesive tape, one is adhered to the winding end side and the other is adhered to the winding portion side, and the non-adhesive portion divides the adhesive tape and The present invention provides a cylindrical electrophotographic photosensitive member comprising fixing release means for releasing the adhesive fixing between the end portion and the winding portion.

  Further, the present invention is fixed in a state where a protective sheet for protecting the photosensitive layer is wound around the outer surface, and is further fixed in a state where a bubble cushioning material sheet is wound around the outer side of the protective sheet. A cylindrical electrophotographic photosensitive member, wherein the bubble buffer material sheet has a winding end portion and a winding stop portion that are adhesively fixed with an adhesive tape having a non-adhesive portion at the center and adhesive portions at both ends. Of the two adhesive portions at both ends of the adhesive tape, one is adhered to the winding end side, the other is adhered to the winding portion side, and the non-adhesive portion divides the adhesive tape to The present invention provides a cylindrical electrophotographic photoreceptor comprising a fixing release means for releasing the adhesive fixing between the portion and the winding portion.

  In addition, the present invention provides a protective sheet wound around the outer surface of the cylindrical electrophotographic photoreceptor to protect the photosensitive layer of the cylindrical electrophotographic photoreceptor, A method for packing a cylindrical electrophotographic photosensitive member that is adhesively fixed by an adhesive tape, wherein a circumference of the protective sheet is longer than an outer peripheral length of the cylindrical electrophotographic photosensitive member, and the adhesive tape The center is a non-adhesive part, both ends are adhesive parts, and the adhesive tape is divided into the non-adhesive part and fixed for releasing the adhesive fixing of the winding end part and the winding part A cylindrical electrophotographic photoreceptor comprising a release means, wherein one of the two adhesive portions of the adhesive tape is adhered to the winding end portion side and the other is adhered to the winding portion side. A packing method is provided.

  In the present invention, a protective sheet is wound around and fixed to the outer surface of the cylindrical electrophotographic photosensitive member in order to protect the photosensitive layer of the cylindrical electrophotographic photosensitive member, and further, air bubbles are formed outside the protective sheet. A packing method for a cylindrical electrophotographic photoreceptor in which a cushioning material sheet is wound and a winding end portion and a winding stop portion of the bubble cushioning material sheet are adhesively fixed with an adhesive tape, the adhesive tape having a non-adhesive portion at the center The both ends are adhesive portions, and the non-adhesive portion is provided with fixing release means for dividing the adhesive tape and releasing the adhesive fixing between the winding end portion and the winding stop portion. And providing a method for packing a cylindrical electrophotographic photoreceptor, wherein one of the two adhesive portions of the adhesive tape is adhered to the winding end portion side and the other is adhered to the winding portion side. is there.

  Further, according to the present invention, the fixing release means is a perforation, and the non-adhesive part divides the adhesive tape, and an operator grips when releasing the adhesive fixing between the winding end part and the winding stop part. The present invention provides a packing method for the above-described cylindrical electrophotographic photoreceptor provided with a gripping portion.

  The present invention also relates to an unpacking method for an electrophotographic photosensitive member packed by the above packing method, wherein the winding end is gripped by pulling the gripping part along the perforation. The present invention provides a method for unpacking a cylindrical electrophotographic photosensitive member, wherein the adhesive fixing between the part and the winding part is released.

  According to the present invention, when the protective sheet of the photosensitive member is unpacked, the protective sheet can be easily removed, and the adhesive part remains on the protective sheet as it is, and the adhesive does not adhere to the photosensitive member. It is possible to prevent image defects due to scratches or deposits on the surface of the photoreceptor due to handling at the time.

  The packaging method of the present invention does not require any special processing on the protective sheet itself, and uses a special adhesive tape as an adhesive tape for fixing the protective sheet. For this reason, the packing method of the present invention increases the range of selection of the protective sheet.

In this invention, fixation is cancelled | released by dividing the adhesive tape which has fixed the winding edge part and winding stop part of the protection sheet at the time of unpacking. For this reason, it is not necessary to manage the adhesive force of the adhesive used for an adhesive tape, and an adhesive force can be designed only for fixation.
In addition, by devising the shape and the like of the fixing release means provided in the central non-adhesive part, for example, even when the adhesive tape is formed with a plastic film, the unpacking operation can be easily performed. Expand the range of materials selection.

When protecting a photoconductor with a protective sheet, a bubble cushioning sheet is often further wound around the outer side of the protective sheet and stored in a packaging box. The pressure-sensitive adhesive tape of the present invention can also be used for attachment (wrapping) of the bubble cushioning material sheet in the same manner as in the case of the protective sheet.
When the photoconductor wound with the bubble cushioning material is stored in a packing box or the like, the conventional adhesive tape described in Patent Document 7 has a problem that the peeling portion (non-adhesive portion) is caught at the entrance. Since the adhesive tape in the present invention has adhesive portions at both ends, the problem of catching does not occur.

It is a figure which shows an example of the attachment method of the protection sheet in this invention. (A) A perspective view showing a state before the protective sheet is attached (wrapped) to the photoconductor (b) A perspective view showing a state where the protective sheet is attached (wrapped) to the photoconductor (c) A protective sheet is attached to the photoconductor Enlarged cross-sectional view of the affixed part in the state of winding (wrapping) It is a figure which shows an example of the protection sheet in this invention. A dotted line indicates a boundary between the winding portion and the winding portion when the protective sheet is wound and attached to the photoreceptor. It is a perspective view which shows an example of the adhesive tape in this invention. A shaded portion indicates a portion where an adhesive is applied. (A) When the fixing release means is a perforation (b) When the fixing release means is a notch It is a figure which shows an example of an adhesive tape provided with the holding part in this invention. A shaded portion indicates a portion where an adhesive is applied. (A) When there is one gripping part (b) When there are two gripping parts It is a figure which shows an example of an adhesive tape provided with the printing part in this invention. In this invention, it is a perspective view which shows the state which attached the bubble buffer material sheet to the outer side of the protection sheet (it wound). It is a perspective view which shows the state which adhered and fixed the protective sheet with two adhesive tapes in this invention. It is a figure which shows an example of the removal method of the protection sheet in this invention. A dotted line shows the boundary of a winding part and a winding part. (A) Perspective view showing a state when the protective sheet is removed from the photoconductor (b) Perspective view showing a state after the protective sheet is removed from the photoconductor It is a perspective view which shows an example of the adhesive tape in a prior art. A shaded portion indicates a portion where an adhesive is applied. It is a figure which shows the attachment method of the protection sheet in a prior art. (A) Perspective view showing a state in which the protective sheet is attached (wrapped) to the photosensitive member (b) An enlarged cross-sectional view of the sticking portion in a state in which the protective sheet is attached (wrapped) to the photosensitive member

  Hereinafter, the present invention will be described. However, the present invention is not limited to the following embodiments, and can be arbitrarily modified and implemented.

  As shown in FIG. 1, the cylindrical electrophotographic photoreceptor 1 of the present invention is fixed in a state where a protective sheet 2 for protecting the photosensitive layer is wound around the outer surface.

<Cylindrical electrophotographic photoreceptor>
The cylindrical electrophotographic photoreceptor 1 is not particularly limited, and a known photoreceptor in which a photosensitive layer is coated by a known method on a cylindrical conductive support is used. The photosensitive layer may be a laminated type photoreceptor composed of a charge generation layer and a charge transport layer, or a single layer type photoreceptor composed of a single photosensitive layer.
Moreover, there is no restriction | limiting in particular also about a magnitude | size (an outer diameter, the length of an axial direction).

<Protective sheet>
As shown in FIG. 2, the protective sheet 2 has a substantially rectangular shape and is wound around the photosensitive member 1 to protect the photosensitive member 1 from impact and prevent deterioration of the photosensitive member due to strong light.
As the protective sheet 2, black high-quality paper having a light shielding function is often used. Further, a black synthetic resin film having a light shielding function or a film obtained by coating high quality paper with a synthetic resin may be used. In many cases, a conductive material is added to the protective sheet 2 to provide an antistatic function.

The length of the peripheral side 2L of the protective sheet 2 is longer than the outer peripheral length (outer diameter × circumferential ratio) of the cylindrical electrophotographic photoreceptor 1.
For this reason, when the protective sheet 2 is wound around the photoreceptor 1, the protective sheet 2 makes one or more turns around the photoreceptor 1, and a portion where the protective sheet 2 overlaps is formed. The protective sheet 2 is fixed by adhering the overlapping portion with the adhesive tape 3.

The length of the peripheral side 2L of the protective sheet 2 is preferably 1.05 times or more and more preferably 1.1 times or more with respect to the outer peripheral length of the cylindrical electrophotographic photoreceptor 1. . Moreover, it is preferable that it is 1.5 times or less, and it is more preferable that it is 1.3 times or less.
If it is at least the above lower limit, a sufficient space can be secured for applying the adhesive tape 3. Moreover, if it is below the above upper limit, the amount of use of the protective sheet 2 can be suppressed (even if the peripheral side 2L of the protective sheet 2 is extended beyond the above upper limit, the material cost is only wasted), Since it is not too long, it becomes easy to wind and fix the protective sheet 2.
That is, the length of the peripheral side 2 </ b> L of the protective sheet 2 is preferably slightly longer than the outer peripheral length of the photoreceptor 1.

  The length of the width side 2W of the protective sheet 2 is preferably equal to or slightly shorter (about 1 to 3 mm) in the axial direction of the photosensitive member 1 in order to uniformly protect the outer surface of the photosensitive member 1. . When it is slightly shorter, accurate alignment with the end of the photoreceptor 1 can be simplified, which is preferable.

  When the protective sheet 2 is wound around the photosensitive member 1 and fixed with the adhesive tape 3, the vicinity of the end portion visible from the outside is referred to as “winding end portion (2a)”. The portion that overlaps with the winding end portion 2a and cannot be seen from the outside is referred to as “winding portion (2c)”. A portion that is visible from the outside adjacent to the winding portion 2c is referred to as a “winding portion (2b)”.

  The winding end portion 2a and the winding stop portion 2b of the protective sheet 2 are adhesively fixed by an adhesive tape 3 whose center is a non-adhesive portion and whose both ends are adhesive portions.

<Adhesive tape>
FIG. 3 shows an example of the pressure-sensitive adhesive tape 3 used in the present invention. The adhesive tape 3 has a non-adhesive portion 3c at the center and adhesive portions 3a and 3b to which both ends are coated with an adhesive.

  As shown in FIG. 1B, the winding end portion 2 a and the winding stop portion 2 b of the protective sheet 2 are adhesively fixed by the adhesive portions 3 a and 3 b of the adhesive tape 3. Of the two adhesive portions 3a and 3b at both ends of the adhesive tape 3, one is adhered to the winding end portion 2a side and the other is adhered to the winding stop portion 2b side. Hereinafter, the adhesive portion on the winding end portion 2a side may be referred to as “winding end portion-side adhesive portion (3a)”, and the adhesive portion on the winding portion 2b side may be referred to as “winding portion-side adhesive portion (3b)”.

The non-adhesive part 3c includes fixing release means 3d for dividing the adhesive tape 3 and releasing the adhesive fixing between the winding end part 2a and the winding stop part 2b. Even when a part of the adhesive tape 3 protruding from the protective sheet 2 touches the photosensitive member 1 after the fixing is released, the protruding portion becomes the non-adhesive portion 3c. It is possible to prevent image defects due to scratches or deposits on the surface of the photoreceptor without adhering.
The fixing release means 3d only needs to be able to easily divide the adhesive tape 3 at the time of unpacking. Specific examples include a perforation (FIG. 3 (a)), a notch (FIG. 3 (b)), and the like.
Since the adhesive tape 3 can be divided without using a tool such as a cutter or a scissors (and it is easy for the operator to understand this), the fixing release means 3d is preferably a perforation. The “perforation” may be a small hole having an intermittently opened area or a broken line penetrating intermittently.

  When the fixing release means 3d is perforated, one adhesive tape 3 may have one perforation, but it is preferable that there are two perforations as shown in FIG. If there are two perforations in one adhesive tape 3, the adhesive tape 3 can be easily divided.

  The pressure-sensitive adhesive tape 3 is obtained by applying a pressure-sensitive adhesive to a base material. There is no limitation in particular about the material of the base material of the adhesive tape 3, Paper, cloth, a film, metal foil, etc. can be used. The material of the pressure-sensitive adhesive is not particularly limited, and an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, or the like can be used.

  In the present invention, the adhesive fixing of the winding end portion 2a and the winding stop portion 2b of the protective sheet 2 is released by the fixing release means 3d provided in the non-adhesive portion 3c. For this reason, since it is not necessary to peel the adhesive tape 3 once stuck to the protective sheet at the time of unpacking, it is not necessary to prescribe | regulate the adhesive force of the adhesive tape 3 like the conventional invention. It is sufficient that the adhesive strength is such that the adhesive tape does not peel off due to vibration during transportation, and there is no problem even if it is strongly adhered.

Examples of the shape of the adhesive tape 3 include a rectangular shape (FIG. 3A) and an elliptical shape. Moreover, as shown in FIGS. 4-5, the non-adhesion part 3c may be provided with the protrusion part (gripping part) 3e, using the rectangular shape as the foundation. The adhesive tape 3 preferably has a horizontally long shape as shown in FIGS.
The grip portion 3e is used for an operator to grip the adhesive tape 3 and release the adhesive fixing between the winding end portion 2a and the winding stop portion 2b. The presence of the grip portion 3e makes it easier to divide the adhesive tape 3 (release the adhesive fixation). One non-adhesive part 3c may be provided with one gripping part 3e (FIG. 4 (a)) or two (FIG. 4 (b)). As shown in FIGS. 4A and 4B, the grip portion 3e is provided so as to protrude in a substantially vertical direction from the long side of the horizontally long adhesive tape 3, so that the adhesive tape 3 can be further easily divided. It is preferable to become.

  If the surface of the pressure-sensitive adhesive tape 3 (the surface on which the pressure-sensitive adhesive is not applied) can be printed, printing, coloring, and the like can be performed. For example, as shown in FIG. 5, an arrow 3 f indicating the dividing direction of the adhesive tape 3 can be printed.

  The adhesive portions 3a and 3b at both ends of the adhesive tape 3 may have the same shape or different shapes. Moreover, the application amount of the adhesive in the adhesive portions 3a and 3b may be uniform or non-uniform.

  In the present invention, when the photoreceptor 1 is fixed, both end portions of the adhesive tape 3 are fixed to the winding end portion 2a and the winding stop portion 2b of the protective sheet 2 by an adhesive. In the method of Patent Document 7, since an adhesive tape having one end formed as a peeling portion (non-adhesive portion) is used, there is a possibility that problems such as the peeling portion (non-adhesive portion) being caught around may occur. Since the adhesive tape 3 in the present invention has the adhesive portions 3a and 3b at both ends and is fixed to the protective sheet 2, such a problem does not occur.

When the pressure-sensitive adhesive tape 3 has a horizontally long rectangular shape as shown in FIG. 3A, the length of the long side 3L is preferably 20 mm or more, more preferably 30 mm or more, and 40 mm or more. It is particularly preferred. Further, it is preferably 100 mm or less, more preferably 80 mm or less, and particularly preferably 60 mm or less.
Within the above range, the adhesive portions 3a and 3b can be provided sufficiently wide, and the protective sheet 2 is difficult to come off during transportation and storage. Moreover, even if the long side 3L is made longer than the above upper limit, only the material cost is increased.

The length of the short side 3W is preferably 5 mm or more, more preferably 7 mm or more, and particularly preferably 9 mm or more. Further, it is preferably 20 mm or less, more preferably 15 mm or less, and particularly preferably 12 mm or less.
Within the above range, the adhesive portions 3a and 3b can be provided sufficiently wide, and the protective sheet 2 is difficult to come off during transportation and storage. Moreover, even if the short side 3W is made longer than the above upper limit, only the material cost is increased.

When the area of the non-adhesive part 3c is 1, the sum of the areas of the two adhesive parts 3a and 3b is preferably 1 or more, and more preferably 2 or more. Moreover, 10 or less is preferable and 7 or less is more preferable.
When it is at least the above lower limit, the adhesive portions 3a and 3b can be provided sufficiently wide, and the protective sheet 2 is difficult to come off during transportation and storage. The non-adhesive part 3c can be provided in an appropriate area when the upper limit is not exceeded, and the adhesive is mistakenly attached to the boundary between the winding end part 2a and the winding part 2c at the time of sticking. Is less likely to occur. Further, when the adhesive tape 3 is shaped so as to be easily divided (two perforations, a gripping portion 3e, etc.), the area of the non-adhesive portion 3c tends to be equal to or less than the upper limit in design. .

  When the shape of the pressure-sensitive adhesive tape 3 is a shape other than a rectangular shape, the area and the ratio of the pressure-sensitive adhesive tape 3 and the non-adhesive portions 3c and the pressure-sensitive adhesive portions 3a and 3b are equal to the preferable range in the case of the rectangular shape described above. It is preferable to do so.

<Bubble cushioning material sheet>
The pressure-sensitive adhesive tape in the present invention can be used for attachment (wrapping) of the bubble cushioning material sheet in the same manner as in the case of the protective sheet.

  The bubble cushioning material sheet is composed of two plastic sheets, and is a cushioning material in which air is trapped in a cylindrical projection formed by molding one sheet, and is used for the purpose of protecting articles from impacts. There is no restriction | limiting in particular about a bubble cushioning material sheet, A well-known bubble cushioning material sheet can be used suitably.

As shown in FIG. 6, the cylindrical electrophotographic photoreceptor 1 is fixed in a state where a protective sheet 2 for protecting the photosensitive layer is wound around the outer surface. Further, the bubble cushioning material sheet 4 is fixed around the outer side of the protective sheet 2.
Similarly to the case where the protective sheet 2 is adhesively fixed with the adhesive tape 3, the winding end 4 a and the winding stop 4 b of the bubble cushioning sheet 4 are non-adhesive portions 3 c at the center and both ends are adhesive portions 3 a and 3 b. The adhesive tape 3 is adhesively fixed. Of the two adhesive portions at both ends of the adhesive tape 3, one is adhered to the winding end portion 4a side and the other is adhered to the winding stop portion 4b side. The non-adhesive part 3c includes fixing release means 3d for dividing the adhesive tape 3 and releasing the adhesive fixing of the winding end part 4a and the winding part 4b.

  When used for adhesive fixing of the bubble cushioning material sheet 4, preferred materials, shapes, and the like for the adhesive tape 3 are the same as those used for adhesive fixing of the protective sheet 2.

  Since the bubble cushioning material sheet 4 is intended to protect the protective sheet 2 from impacts (because it is not intended to prevent the protective sheet 2 from being soiled by adhering matter), the protective sheet 2 Unlike the case where the sheet is wound around the photoconductor 1, the bubble cushioning material sheet 4 does not have to go around the protective sheet once as shown in FIG. 6 (there is no portion where the bubble cushioning material sheet 4 overlaps). Also good). That is, the portion corresponding to the “winding portion 2 c” in the case of the protective sheet 2 may not be present in the bubble cushioning material sheet 4. It is also preferable that the edges in the winding direction of the bubble cushioning material sheet 4 abut against each other just once.

  Usually, the photoconductor 1 is stored in a packing box or the like in a state where the protective sheet 2 is wound around the photoconductor 1 and the bubble cushioning material sheet 4 is wound around the outer side of the protective sheet 2. In the case of storage, in the conventional adhesive tape described in Patent Document 7 and the like, there is a possibility that the peeling portion (non-adhesive portion) is caught at the end of the storage box because the peeling portion (non-adhesive portion) exists at the end. However, since the both ends of the adhesive tape 3 in the present invention are the adhesive portions 3a and 3b, the problem of catching does not occur.

  When the protective sheet 2 is wound around the photosensitive member 1 to be adhesively fixed, and further, the bubble cushioning material sheet 4 is wound around the outer side of the protective sheet 2 with the adhesive tape 3 of the present invention to be adhesively fixed, the protective sheet to the photosensitive member 1 For the adhesive fixation of No. 2, the adhesive tape 3 in the present invention may be used, or an adhesive tape different from the adhesive tape 3 in the present invention may be used.

[Packing method]
In the present invention, winding the protective sheet 2 around the photoreceptor 1 and winding the bubble cushioning material sheet 4 around the protective sheet 2 can be performed in the same manner. Hereinafter, the case where the protective sheet 2 is wound around the photoreceptor 1 will be described as an example.

  When the protective sheet 2 is attached (wrapped) to the photosensitive member 1 by the packing method of the present invention, first, the protective sheet 2 is prepared, and the axial direction of the photosensitive member 1 and the width side 2W of the protective sheet 2 are parallel to each other. Arrange so that Next, the protective sheet 2 is wound along the outer surface of the photosensitive member 1 and disposed so that the winding end portion 2a and the winding portion 2c overlap each other, and tension is applied to the protective sheet 2 so that there is no slack.

  In this state, the winding end side non-adhesive portion 3a is positioned on the winding end portion 2a side, and the winding portion side non-adhesive portion 3b is positioned on the winding end portion 2b side. Is attached to the vicinity of the boundary between the winding end portion 2a and the winding stop portion 2b and adhesively fixed, whereby the attachment (winding) of the protective sheet 2 is completed.

  A series of attachment (winding) operations may be performed by a human hand or by a machine.

When the adhesive tape 3 has a horizontally long rectangular shape as shown in FIG. 3A, when the adhesive portions 3 a and 3 b of the adhesive tape 3 are attached, the long side 3 </ b> L of the adhesive tape 3 is arranged around the protective sheet 2. Affixing so as to be substantially parallel to the side 2L is preferable because the adhesive tape does not easily come off or loosen due to vibration or the like, but the case where the adhesive tape 3 is attached obliquely is out of the scope of the present invention. Do not mean. Similarly, when the pressure-sensitive adhesive tape 3 has another shape, it is preferable to apply the adhesive tape 3 so that the longitudinal direction is substantially parallel to the circumferential side 2L. However, the case where the adhesive tape 3 is attached obliquely is out of the scope of the present invention. Do not mean.
Moreover, it is preferable to affix the adhesive tape 3 so that the non-adhesive part 3c may become substantially equal by the side of the winding edge part 2a, and the side of the winding stop part 2b.

  As shown in FIG. 7, the winding end portion 2 a and the winding stop portion 2 b of the protective sheet 2 may be adhesively fixed with two (or more) adhesive tapes 3.

[Unpacking method]
In the unpacking method of the electrophotographic photosensitive member packed by the packing method of the present invention, the bubble cushioning material sheet 4 is removed from the protective sheet 2 and the protective sheet 2 is removed from the photosensitive member 1 in the same manner. Can do. Hereinafter, a case where the protective sheet 2 is removed from the photoreceptor 1 will be described as an example.

  In the unpacking method of the electrophotographic photosensitive member packed by the packing method of the present invention, when unpacking, the adhesive tape 3 is divided by the fixing release means 3d, and the adhesive fixing of the winding end portion 2a and the winding stop portion 2b is released. By doing so, the protective sheet 2 is removed.

  For example, in the case of an adhesive tape as shown in FIG. 3A (the non-adhesive portion has two perforations), the portion between the two perforations 3d of the non-adhesive portion 3c is pulled along the perforations. Thus (FIG. 8A), the adhesive tape 3 is divided, the adhesive fixing of the winding end portion 2a and the winding stop portion 2b is released, and the protective sheet 2 is removed from the photoreceptor. At this time, the adhesive portions 3a and 3b remain on the winding end portion 2a and the winding stop portion 2b without being peeled off (FIG. 8B), so that the adhesive adheres to the photoreceptor 1. It does not cause contamination of the photoreceptor surface.

When the adhesive tape 3 is as shown in FIG. 4, that is, the fixing release means 3d is a perforation, and the non-adhesive portion 3c divides the adhesive tape 3 to adhere the winding end portion 2a and the winding portion 2b. When the gripping portion 3e is provided for the operator to grip when releasing the fixing, the gripping portion 3e is gripped, and the gripping portion 3e is pulled along the perforation 3d, whereby the winding end portion 2a and the winding stop portion 2b. Release the adhesive fixing.
When the adhesive tape 3 has the holding part 3e, the operation | work which partes the adhesive tape 3 and cancels | releases the adhesion fixation of the protection sheet 2 becomes still easier.

  In the present invention, at the time of unpacking, the adhesive fixing is released by dividing the adhesive tape 3 by the fixing releasing means 3d provided in the non-adhesive portion 3c. For this reason, it is not necessary to apply an excessive force or use a tool such as a cutter or a scissors when releasing the adhesive fixation, and the photoconductor 1 is not damaged when unpacking. Moreover, in this invention, it is not necessary to peel off the adhesion parts 3a and 3b, and the adhesion parts 3a and 3b remain on the protective sheet 2.

  On the other hand, the conventional adhesive tape 13 described in Patent Document 7 has a non-adhesive part (peeling part) 13a without an adhesive only at one end, and the remaining part including the other end becomes an adhesive part 13c. (FIG. 9). At the time of unpacking, the non-adhesive part (peeling part) 13a is grasped and pulled up in the direction of the arrow in FIG.

  In the pressure-sensitive adhesive tape 13 of Patent Literature 7, in order to release the pressure-sensitive adhesive fixation, at least a portion located on the winding end portion 2a side of the pressure-sensitive adhesive portion 13c must be peeled off. For this reason, it is necessary for the adhesive to have an appropriate adhesive strength. If the adhesive tape 13 is peeled off vigorously, the adhesive tape 13 is completely separated from the protective sheet 2, and as a result, there is a possibility that the adhesive adheres to the photoreceptor 1 from which the protective sheet 2 has been removed.

  In the present invention, the fixing release means 3d is provided on the non-adhesive part 3c of the adhesive tape 3, so that it is possible to apply an excessive force or to remove the appliance without removing the adhesive parts 3a and 3b at the time of unpacking. Even if it is not used, the adhesive fixing of the protective sheet 2 can be released, and the problems of the conventional adhesive tape are solved. In addition, since neither of the adhesive portions 3 a and 3 b is peeled off from the protective sheet 2, there is no possibility that the adhesive adheres to the photoreceptor 1.

  The cylindrical electrophotographic photosensitive member packed by the cylindrical electrophotographic photosensitive member packing method of the present invention is very easy to remove the protective sheet, and the surface of the photosensitive member is not damaged when the protective sheet is removed. Since it is difficult to adhere to deposits, performance degradation due to handling methods such as packing and transportation hardly occurs, and it is widely used in copiers, printers, facsimiles and the like.

DESCRIPTION OF SYMBOLS 1 Cylindrical electrophotographic photoreceptor 2 Protection sheet 2a Winding edge part 2b Winding part 2c Winding part 2L Circumference 2W Width side 3 Adhesive tape 3a Winding edge side adhesion part 3b Winding part side adhesion part 3c Non-adhesion Part 3d fixing release means 3e gripping part 3f printing part (arrow indicating the direction of separation)
3L Long side 3W Short side 4 Bubble cushioning sheet 4a Winding end 4b Winding part 13 Adhesive tape (Conventional product)
13a Non-adhesive part (peeling part)
13c Adhesive part

Claims (8)

  A cylindrical electrophotographic photoreceptor fixed in a state where a protective sheet for protecting a photosensitive layer is wound around an outer surface, and the circumferential side of the protective sheet is the cylindrical electrophotographic photoreceptor The winding end portion and the winding stop portion of the protective sheet are adhesively fixed by an adhesive tape whose center is a non-adhesive portion and both ends are adhesive portions, Of the two adhesive portions at both ends of the adhesive tape, one is adhered to the winding end side and the other is adhered to the winding end side, and the non-adhesive portion divides the adhesive tape to separate the winding end portion and the winding stop. A cylindrical electrophotographic photosensitive member comprising a fixing release means for releasing the adhesive fixing of the portion.   Cylindrical electrophotography in which a protective sheet for protecting the photosensitive layer is wound around the outer surface and fixed in a state where a bubble cushioning material sheet is wound around the outer surface of the protective sheet. And the winding end portion and the winding stop portion of the bubble cushioning sheet are adhesively fixed by an adhesive tape having a non-adhesive portion at the center and an adhesive portion at both ends. Of the two adhesive portions at both ends of the tape, one is adhered to the winding end portion side and the other is adhered to the winding portion side, and the non-adhesive portion divides the adhesive tape to separate the winding end portion and the winding portion. A cylindrical electrophotographic photosensitive member, comprising: a fixing releasing means for releasing the adhesive fixing of the above.   The cylindrical electrophotographic photoreceptor according to claim 1, wherein the fixing release means is a perforation.   The said non-adhesive part is provided with the holding part for an operator to hold | grip when dividing the said adhesive tape and releasing the adhesion fixation of the said winding end part and the said securing part. The cylindrical electrophotographic photoreceptor according to claim 1.   In order to protect the photosensitive layer of the cylindrical electrophotographic photosensitive member, a protective sheet is wound around the outer surface of the cylindrical electrophotographic photosensitive member, and the winding end portion and the winding stop portion of the protective sheet are adhesively fixed with an adhesive tape. A method for packing a cylindrical electrophotographic photosensitive member, wherein the circumference of the protective sheet is longer than the outer peripheral length of the cylindrical electrophotographic photosensitive member, and the adhesive tape has a non-adhesive center. Both ends are adhesive portions, and the non-adhesive portion is provided with fixing release means for dividing the adhesive tape and releasing the adhesive fixing between the winding end portion and the winding stop portion. A method for packing a cylindrical electrophotographic photosensitive member, wherein one of the two adhesive portions of the adhesive tape is adhered to the winding end portion side and the other is adhered to the winding portion side.   In order to protect the photosensitive layer of the cylindrical electrophotographic photosensitive member, a protective sheet is wound around and fixed to the outer surface of the cylindrical electrophotographic photosensitive member, and a bubble cushioning material sheet is wound around the outer side of the protective sheet. A packing method for a cylindrical electrophotographic photosensitive member in which a winding end portion and a winding stop portion of the bubble cushioning material sheet are adhesively fixed with an adhesive tape, wherein the adhesive tape has a non-adhesive portion at the center, Is an adhesive portion, and the non-adhesive portion is provided with fixing release means for dividing the adhesive tape and releasing the adhesive fixing between the winding end portion and the winding stop portion, and the adhesive tape. A method for packing a cylindrical electrophotographic photosensitive member, wherein one of the two adhesive portions is adhered to the winding end portion side and the other is adhered to the winding portion side.   The fixing release means is a perforation, and the non-adhesive portion includes a gripping portion for an operator to grip when the adhesive tape is cut and the adhesive fixing between the winding end portion and the winding stop portion is released. A method for packing a cylindrical electrophotographic photoreceptor according to claim 5 or 6.   A method for unpacking an electrophotographic photosensitive member packed by the packing method according to claim 7, wherein the gripping portion is gripped and the gripping portion is pulled along the perforation to A method for unpacking a cylindrical electrophotographic photoreceptor, wherein the adhesive fixing of the winding part is released.

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