JP6998197B2 - Method for manufacturing a holder for a cylindrical body and a photosensitive drum - Google Patents

Description

The present invention relates to a cylinder holder used for cleaning and drying a cylindrical body such as a photosensitive drum substrate, and a method for manufacturing a photosensitive drum using the holder.

When the photosensitive drum substrate is washed or dried as a cylindrical body, for example, to manufacture a photosensitive drum for an electrophotographic apparatus, the substrate is generally held upright by a holder provided on a pallet.

Japanese Unexamined Patent Publication No. 2007-41210 (Patent Document 1) discloses a holding body having a cylindrical large-diameter support and a small-diameter support arranged inside the cylindrical large-diameter support as a holding body for holding such a substrate. .. A communication hole is formed in the peripheral wall of the large-diameter column to communicate the inside and the outside. Cleaning liquid and drying gas flow through this communication hole.

Further, Japanese Patent Application Laid-Open No. 2011-22206 (Patent Document 2) states that the cleaning solution can be removed in a short time by pulling up the substrate held upright in the holding body from the cleaning solution and then tilting the substrate. It is disclosed.

Japanese Unexamined Patent Publication No. 2007-41210 Japanese Unexamined Patent Publication No. 2011-22206

By the way, the holding body has a receiving surface for receiving the lower end surface of the cylindrical body in contact with the lower end surface. This receiving surface is generally formed horizontally. Therefore, when the substrate washed with the cleaning liquid is dried, the cleaning liquid tends to remain on the receiving surface. If the cleaning liquid remains on the receiving surface, problems such as stains on the substrate and contamination of the environment of the next process occur due to the remaining cleaning liquid. Further, in order to dry and remove the cleaning liquid so that the cleaning liquid does not remain on the receiving surface, it is necessary to set a long drying time for the substrate.

The present invention has been made in view of the above-mentioned technical background, and an object of the present invention is to provide a holder for a cylindrical body capable of rapidly drying and removing a cleaning liquid, and a method for manufacturing a photosensitive drum using the holder. It is in.

The present invention provides the following means.

[1] A holding body main body portion inserted and arranged inside the cylinder from the lower end opening of the cylinder washed with the cleaning liquid.
A receiving portion having a receiving surface for receiving the lower end of the cylindrical body in contact with the lower end is provided.
The upper end portion of the holding body main body portion has a guide surface inclined outward in the radial direction with respect to the downward direction for guiding the cylindrical body to an appropriate position.
A holding body for a cylindrical body in which the wettability of the receiving surface to the cleaning liquid is better than the wetting property of the guide surface to the cleaning liquid.

[2] The receiving surface is roughened as a treatment for improving the wettability.
The cylindrical holder according to item 1 above, wherein the guide surface is not roughened.

[3] The holder for a cylindrical body according to item 1 or 2 above, wherein the portion having the guide surface and the portion having the receiving surface are separably connected.

[4] The holding body for a cylindrical body according to any one of the above items 1 to 3, wherein the holding body main body portion and the receiving portion are made of synthetic resin.

[5] A method for manufacturing a photosensitive drum, wherein the photosensitive drum substrate is washed with a cleaning liquid and dried while the photosensitive drum substrate as a cylindrical body is held upright on the holder according to any one of the above items 1 to 4.

The present invention has the following effects.

In item 1 above, since the receiving surface of the receiving portion has good wettability to the cleaning liquid, the cleaning liquid remaining on the receiving surface does not easily become ball-shaped, and the drying gas (air, warm air, hot air) of the cleaning liquid on the receiving surface during drying is performed. The contact area with (including, etc.) increases. As a result, the cleaning liquid on the receiving surface can be quickly dried and removed. Further, the wettability of the guide surface of the holding body to the cleaning liquid is worse than that of the receiving surface, and the cleaning liquid adhering to the guide surface becomes, for example, substantially a ball shape and easily slides off on the guide surface. As a result, the cleaning liquid on the guide surface can be quickly dried and removed.

In item 2 above, by performing a roughening treatment on the receiving surface as a treatment for improving the wettability, the wettability of the receiving surface with respect to the cleaning liquid can be surely improved.

In the preceding item 3, since the portion having the guide surface and the portion having the receiving surface are separably connected, for example, a treatment for improving the wettability of the receiving surface with the cleaning liquid (eg, roughening by shot blasting). Work (eg, masking work) to prevent the guide surface from being treated to improve the wettability by separating the part having the guide surface and the part having the receiving surface when performing the treatment). ) Is no longer necessary. This improves workability in the process for improving the wettability of the receiving surface.

Further, when the receiving surface is locally worn due to contact with the lower end of the cylindrical body, by separating the portion having the guide surface and the portion having the receiving surface, only the portion having the receiving surface in the entire holding body is separated. Can be replaced with a new one. Therefore, it is possible to reduce the running cost of the holding body.

In item 5 above, since the holding body and the receiving part are made of synthetic resin, it is possible to suppress damage and deformation of the cylinder due to contact with the holding body when the cylinder is held by the holding body. Can be done.

In the preceding item 6, any one of the effects of the preceding items 1 to 5 can be exerted when the photosensitive drum is manufactured.

FIG. 1 is a perspective view of a holding body according to an embodiment of the present invention. FIG. 2 is a plan view of the holding body. FIG. 3 is a side view showing the holding body fixed on the pallet. FIG. 4 is a perspective view showing the holding body separated into a portion having a guide surface and a portion having a receiving surface. FIG. 5 is a diagram illustrating a case where the photosensitive drum substrate as a cylindrical body held by the holding body is washed and dried. FIG. 6 is a cleaning process diagram of the photosensitive drum substrate when manufacturing the photosensitive drum. FIG. 7 is a diagram illustrating a contact angle of the receiving surface with respect to the cleaning liquid. FIG. 8 is a diagram illustrating a contact angle of the guide surface with respect to the cleaning liquid. FIG. 9 is an optical micrograph of the receiving surface. FIG. 10 is an optical micrograph of the guide surface.

Next, an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the holding body 1 according to the embodiment of the present invention holds the photosensitive drum substrate (indicated by a two-dot chain line) 30 as a cylindrical body in an upright position.

The substrate 30 is for an electrophotographic apparatus, and its shape is cylindrical, and in detail, it is a circular tube. As shown in FIG. 5, the substrate 30 is immersed in the cleaning liquid 40 in the cleaning tank 45 for cleaning, and then pulled up from the cleaning liquid 40 and dried.

The outer diameter, wall thickness and length of the substrate 30 are not limited, for example, the outer diameter thereof is 10 to 100 mm, the wall thickness is 0.1 to 5 mm, and the length thereof is 50 to 500 mm. The material of the substrate 30 is not limited, and is, for example, a metal such as aluminum (including an alloy thereof).

As shown in FIGS. 3 and 5, a plurality of holding bodies 1 are erected on, for example, horizontally arranged pallets 20. More specifically, each holding body 1 is detachably attached to the pallet 20 by a fixing bolt 25 in a fixed state. The fixing bolt 25 is made of, for example, a hexagon socket head cap screw. The axis P of the holding body 1 faces in the vertical direction.

As shown in FIGS. 1 and 2, the holding body 1 includes a holding body main body portion 2 and a trapezoidal receiving portion 10.

The holding body main body 2 is inserted and arranged from the lower end opening 33 of the substrate 30 to the inner side 31 of the substrate 30 (see FIG. 3), and is provided in the receiving portion 10 so as to project upward with respect to the receiving portion 10. There is.

The diameter (thickness) of the holding body main body 2 is smaller than the inner diameter of the substrate 30, and specifically, it is set to 50 to 98% of the inner diameter of the substrate 30. The length of the holding body main body 2 is usually shorter than the length of the substrate 30, and specifically, it is set in the range of, for example, 20 to 80% with respect to the length of the substrate 30.

The receiving portion 10 is formed to have a diameter larger than that of the holding body main body portion 2, and has a receiving surface 11 that contacts and receives the lower end surface 32 as the lower end surface of the substrate 30. The diameter (thickness) of the receiving portion 10 is not limited as long as it can receive the lower end surface 32 of the substrate 30, and is set to be larger than the outer diameter of the substrate 30.

The holding body main body 2 and the receiving portion 10 are made of synthetic resin. It is desirable to use a synthetic resin having excellent heat resistance and chemical resistance. Specifically, polytetrafluoroethylene resin (PTFE resin), fluororesin such as hard fluororubber, polyamide resin, and polyphenylene sulfide resin. (PPS resin) or the like can be used. The material of the holding body main body 2 and the material of the receiving portion 10 may be the same type or different types.

The holding body main body 2 has a plurality of plate-like shapes that protrude radially outward from the axis P of the holding body 1 and continuously extend downward from the upper end of the holding body main body 2 (holding body 1). A blade portion 3 (this is referred to as a "first blade portion 3" for convenience of explanation) is provided. The size and shape of the plurality of first blade portions 3 are the same as each other.

The lower end of the first blade portion 3 is located at the same height as the height position of the receiving surface 11 of the receiving portion 10 or below the height position of the receiving surface 11, and in the present embodiment, the receiving surface 11 is located. It is located at the lower end of the receiving portion 10, which is a position lower than the height position of the above.

The plurality of first blade portions 3 are integrally connected to each other at the axis P position of the holding body 1, and are further arranged substantially evenly in the circumferential direction of the holding body 1 as shown in FIG. In the present embodiment, the number of the first blade portions 3 is four, and the cross-sectional shape of these first blade portions 3 is substantially cross-shaped. Therefore, in the plan view of the holding body 1, each first blade portion 3 is formed. The angle between the three is about 90 °.

In the present invention, the number of the first blade portions 3 is not limited to four, and even if the number of the first blade portions 3 is, for example, three and the cross-sectional shape of the first blade portions 3 is substantially three-pointed. good.

As shown in FIGS. 1 and 3, the upper end portion of the holding body main body 2 is formed in a tapered shape, which makes it easy to insert the holding body main body 2 from the lower end opening 33 of the base 30 into the inner 31 of the base 30. It has become.

That is, a guide surface 4 inclined outward in the radial direction with respect to the downward direction is formed at the upper end portion of the holding body main body portion 2. The guide surface 4 is for guiding the base 30 to an appropriate position when the holder main body 2 is inserted into the base 30 inside 31. In the present embodiment, the guide surface 4 is linearly inclined outward in the radial direction from the upper end to the upper end portion of each first blade portion 3 as the upper end portion of the holding body main body portion 2. There is.

It is desirable that the inclination angle α of the guide surface 4 with respect to the axis P of the holding body 1 is in the range of 15 to 60 °. In this case, the substrate 30 can be reliably guided to an appropriate position, and the cleaning liquid 40 adhering to the guide surface 4 can be reliably slipped off from the guide surface 4.

Here, in the present embodiment, the guide surface 4 is inclined linearly as described above, but in the present invention, the guide surface is not limited to this, and even if the guide surface is inclined in an arc shape in a cross section, for example. Well, in this case, the radius of curvature is not limited, but is set in the range of, for example, 5 to 50 mm.

Further, a vertical surface 5 is formed at the upper end of each first blade portion 3 from the lower end of the guide surface 4 in parallel with the axis P of the holding body 1. Further, the portion between the upper end portion and the lower end portion of the holding body main body 2 is formed to have a smaller diameter than the upper end portion and the lower end portion.

The receiving portion 10 includes a cylindrical shaft portion 12 formed coaxially with the axis P of the holding body 1, and further, from the outer peripheral surface of the shaft portion 12 in a radial direction with respect to the axis P of the holding body 1. It is provided with a plurality of blade portions 15 (this is referred to as "second blade portion 15" for convenience of explanation) that protrudes radially and extends in the axis P direction of the holding body 1. The size and shape of the plurality of second blade portions 15 are the same as each other. The second blade portion 15 protrudes from the first blade portion 3 in the direction outside the radius.

The plurality of second blade portions 15 are integrally formed on the outer peripheral surface of the shaft portion 12, and are further arranged substantially evenly in the circumferential direction of the holding body 1 as shown in FIG. In the present embodiment, the number of the second blade portions 15 is the same as the number of the first blade portions 3 (that is, four), and the cross-sectional shape of these second blade portions 15 is substantially cross-shaped, and therefore held. In the plan view of the body 1, the angle between the second blade portions 15 and 15 is about 90 °.

The first blade portion 3 and the second blade portion 15 are separated from each other in the circumferential direction of the holding body 1, and more specifically, as shown in FIG. 2, between the second blade portions 15 and 15 in the plan view of the holding body 1. The first blade portion 3 and the second blade portion 15 are separated from each other in the circumferential direction of the holding body 1 so that the first blade portions 3 are arranged one by one. In the plan view of the holding body 1, the angle between the first blade portion 3 and the second blade portion 15 is about 45 °.

The upper end surface 16 of the second blade portion 15 includes the above-mentioned receiving surface 11, that is, the receiving surface 11 is a part of the upper end surface 16 of the second blade portion 15. More specifically, the receiving surface 11 is composed of a portion of the upper end surface 16 of the second blade portion 15 from the middle to the tip in the protruding direction of the second blade portion 15.

The upper end surface 16 (including the receiving surface 11) of the second blade portion 15 is formed in a flat shape, and is arranged horizontally while holding the substrate 30. Further, a notch 17 is locally provided in a portion of the upper end surface 16 of the second blade portion 15 on the axis P (shaft portion 12) side of the receiving surface 11, whereby the portion is provided as a receiving surface. It is formed so as to be at a height position lower than 11.

The lower end surface of the receiving portion 10 is composed of the lower end surfaces of the plurality of second blade portions 15. The lower end portion of the shaft portion 12 projects slightly below the lower end surface of the receiving portion 10. As a result, a positioning protruding portion 13 including a protruding lower end portion of the shaft portion 12 is formed at the center of the lower end surface of the receiving portion 10.

As shown in FIG. 4, the holding body main body 2 is located at a height above the receiving surface 11 of the receiving portion 10 and is located on the receiving portion 10 side (this is referred to as “lower main body 2B” for convenience of explanation”. It is divided into a portion 2A above it (referred to as "upper body portion 2A" for convenience of explanation).

In the first blade portion 3 of the holding body main body 2, the holding body main body 2 is divided into a lower main body portion 2B and an upper main body portion 2A, so that a portion 3B on the receiving portion 10 side (this is described as “lower” for convenience of explanation. It is divided into a "first blade portion 3B") and a portion 3A above it (referred to as "upper first blade portion 3A" for convenience of explanation). Therefore, the upper main body portion 2A has the above-mentioned guide surface 4.

The lower main body portion 2B and the receiving portion 10 are integrally formed, and therefore, the receiving portion 10 has the lower main body portion 2B integrally.

In a state where the upper main body portion 2A and the lower main body portion 2B are connected, the upper end of the shaft portion 12 of the receiving portion 10 is located at the lower end of the upper main body portion 2A.

The lower first blade portion 3B continuously extends downward from the upper end of the lower main body portion 2B (that is, the upper end of the shaft portion 12) to the lower end of the holding body 1 (that is, the lower end of the receiving portion 10).

As shown in FIG. 4, a fitting protrusion 7 having a circular cross-section that protrudes downward is integrally formed at the center of the lower end surface of the upper main body 2A. Then, the fitting protrusion 7 is fitted to the inner side 12a of the shaft portion 12 so as to be freely fitted and detached from above, so that the upper main body portion 2A and the lower main body portion 2B are detachably connected to each other and the holding body main body portion 2 is connected. Is configured.

In a state where the fitting protrusion 7 is fitted to the inner side 12a of the shaft portion 12 (that is, a state in which the upper main body portion 2A and the lower main body portion 2B are connected), as shown in FIGS. 1 and 2, the holding body 1 The position of the upper first blade portion 3A and the position of the lower first blade portion 3B in the circumferential direction are all the same.

As described above, the holding body 1 is fixed on the pallet 20 in an upward projecting manner by the fixing bolts 25.

That is, as shown in FIG. 4, a screw hole 8 screwed into the fixing bolt 25 extending upward from the lower end surface is formed on the lower end surface of the fitting protrusion 7 of the upper main body portion 2A. The pallet 20 is provided with an insertion hole 22 for a fixing bolt 25. Then, in a state where the fitting protrusion 7 is fitted to the inner side 12a of the shaft portion 12, the fixing bolt 25 inserted from below the insertion hole 22 is screwed into the screw hole 8 of the fitting protrusion 7. As a result, the upper main body portion 2A and the lower main body portion 2B are connected to form the holding body 1, and the holding body 1 is fixed on the pallet 20 in an upward projecting manner.

Further, in such a fixed state of the holding body 1, the positioning protrusion 13 of the holding body 1 is removably fitted into the positioning recess 21 provided on the upper surface 20a of the pallet 20. Thereby, when the holding body 1 is fixed on the pallet 20, the fixing position of the holding body 1 on the pallet 20 is determined.

In the holding body 1, the receiving portion 10 integrally having the lower main body portion 2B is subjected to a roughening treatment as a treatment for improving the wettability to the cleaning liquid 40 over the entire outer surface thereof. The roughening treatment is performed by shot blasting in this embodiment. On the other hand, the outer surface of the upper body portion 2A is not subjected to such treatment at all. As a result, the wettability of at least the receiving surface 11 of the receiving portion 10 with respect to the cleaning liquid 40 is better than the wettability of at least the guide surface 4 of the upper main body portion 2A with respect to the cleaning liquid 40.

When the receiving surface 11 is roughened by shot blasting, the receiving portion 10 (that is, the portion having the receiving surface 11) and the upper main body portion 2A (that is, the guide) having the lower main body portion 2B integrally are subjected to the roughening treatment. It is desirable to separate the portion having the surface 4) and then perform roughening treatment by shot blasting only on the receiving portion 10 having the lower main body portion 2B integrally. In this case, it is not necessary to perform work (eg, masking work) for preventing the roughening treatment by shot blasting on the guide surface 4 of the upper main body 2A, and the roughening treatment by shot blasting is workable. The holding body 1 can be manufactured at low cost.

The conditions for the roughening treatment by shot blasting for improving the wettability to the cleaning liquid 40 are not limited. For example, the shot media (projection material) used is glass beads, and the projection time is 5 min.

Since the receiving surface 11 has good wettability with respect to the cleaning liquid 40, the contact angle θ1 of the cleaning liquid 40 on the receiving surface 11 is small as shown in FIG. Therefore, when the cleaning liquid 40 adheres to the receiving surface 11 during cleaning of the substrate 30, the cleaning liquid 40 does not become a ball shape, and the contact area with the drying gas (including air, warm air, hot air, etc.) becomes large. As a result, the cleaning liquid 40 can be quickly dried and removed.

Since the guide surface 4 is not subjected to a treatment for improving the wettability with respect to the cleaning liquid 40, the contact angle θ2 of the cleaning liquid 40 on the guide surface 4 is larger than θ1 (θ2> θ1). Therefore, when the cleaning liquid 40 adheres to the guide surface 4 when cleaning the substrate 30, the cleaning liquid 40 becomes substantially ball-shaped, and the cleaning liquid 40 on the guide surface 4 easily slides down on the guide surface 4. As a result, the cleaning liquid 40 can be quickly dried and removed.

When the receiving portion 10 is made of synthetic resin, it is desirable that the receiving surface 11 is roughened so that the surface roughness Rz of the receiving surface 11 is in the range of 5.0 to 20 μm. In this case, the cleaning liquid 40 on the receiving surface 11 can be reliably and quickly dried and removed.

When the holding body main body 2 is made of synthetic resin, it is desirable that the surface roughness Rz of the guide surface 4 is 1.0 μm or less. In this case, the cleaning liquid 40 on the guide surface 4 can be reliably and easily slipped off, whereby the cleaning liquid 40 on the guide surface 4 can be reliably and quickly dried and removed. The desirable lower limit of the surface roughness Rz of the guide surface 4 is not limited, and is, for example, 0.01 μm.

As shown in FIG. 9 as an example of the surface state of the receiving surface 11, the receiving surface 11 is roughened by shot blasting, so that fine irregularities are formed. There is. In the case of the figure, the surface roughness Rz of the receiving surface 11 is 5.0 μm.

As an example of the surface state of the guide surface 4, as shown in FIG. 10 is an optical micrograph of the guide surface 4, the guide surface 4 has a transfer of a tool mark used for molding the holding body 1 and a tool mark at the time of manufacturing. , There is a tool mark on the guide surface 4 at the time of cutting, and therefore the guide surface 4 is not positively roughened. In the case of the figure, the surface roughness Rz of the guide surface 4 is 0.290 μm.

The above-mentioned surface roughness Rz all mean the maximum height measured in accordance with JIS (Japanese Industrial Standards) B0601: 2001.

When the substrate 30 is held by the holding body 1, the substrate 30 is gripped by a chuck portion of a chuck device (not shown). Then, as shown in FIG. 3, the substrate 30 is lowered from the lower end opening 33 of the substrate 30 so that the holding body main body portion 2 of the holding body 1 is inserted into the inner 31 thereof, and the lower end surface 32 of the substrate 30 is held. When it comes into contact with the receiving surface 11 of the receiving portion 10 of the body 1, the lowering of the substrate 30 is stopped. Then, the grip of the substrate 30 by the chuck portion of the chuck device is released. As a result, as shown in FIG. 1, the substrate 30 is held upright by the holding body 1.

In the state where the substrate 30 is held by the holding body 1 in this way, the lower end surface 32 of the substrate 30 is in contact with the receiving surface 11 and is received by the receiving surface 11, and the substrate 30 is the receiving surface of the lower end surface 32 thereof. It is not in contact with any part of the holder 1 except the contact portion with 11.

In the above-mentioned holding operation of the base 30 to the holding body 1, the lower end surface 32 of the base 30 is the holding body main body when the holding body main body 2 of the holding body 1 is inserted from the lower end opening 33 of the base 30 to the inner side 31 thereof. When in contact with the upper end portion of 2, the lower end surface 32 of the substrate 30 is guided downward by the guide surface 4 toward the receiving surface 11. As a result, the substrate 30 is arranged at an appropriate position when the substrate 30 is washed in the holding body 1.

When the photosensitive drum is manufactured from the substrate 30, the substrate 30 is held upright on each of the plurality of holding bodies 1 erected on the pallet 20 as shown in FIG. 5, and in this state, the substrate 30 is held against the plurality of substrates 30. Generally, the cleaning step shown in FIG. 6 is performed. After that, a predetermined layer such as a photoconductor layer is formed on the outer surface of the substrate 30, and a photosensitive drum is obtained.

As shown in the figure, the cleaning step includes a preliminary cleaning step S1, a degreasing step S2, a first rinsing step S3, a neutralizing step S4, a second rinsing step S5, a dipping and pulling drying step S6, and a final drying step S7. It is done in the order described. Of these steps S1 to S7, in the degreasing step S2 to the dipping and pulling drying step S6, as shown in FIG. 5, the plurality of substrates 30 remain upright held by the plurality of holding bodies 1 on the pallet 20. This is performed by immersing the substrate 30 in the cleaning liquid 40 in the cleaning tank 45.

In the pre-cleaning step S1, the substrate 30 is washed by shower washing. In the degreasing step S2, the substrate 30 is washed with an acidic solution as a washing liquid 40. In the first rinsing step S3, the substrate 30 is washed with pure water as the washing liquid 40. In the neutralization step S4, the substrate 30 is washed with an alkaline solution as a washing liquid 40. In the second rinsing step S5, the substrate 30 is washed with pure water as the washing liquid 40. In the dipping and pulling-up drying step S6, the substrate 30 is washed by being immersed in warm pure water as a cleaning liquid 40, and then the substrate 30 is pulled up from the warm pure water to drop the warm pure water from the substrate 30 and preheat the warm pure water. To be dried. In the final drying step S7, the substrate 30 is dried with, for example, warm air as a drying gas in order to remove the warm pure water remaining after the pull-up drying step S6.

Of these steps S1 to S7, for example, in the dipping and pulling-up drying steps S6, the cleaning liquid (more specifically, warm pure water) 40 tends to remain on the receiving surface 11 of the holding body 1. However, since the receiving surface 11 has good wettability with respect to the cleaning liquid 40, the cleaning liquid 40 on the receiving surface 11 is quickly dried and removed. Further, since the guide surface 4 of the holding body main body 2 is not formed vertically but is inclined, the cleaning liquid 40 tends to remain on the guide surface 4 in general. However, since the guide surface 4 is not treated to improve the wettability with respect to the cleaning liquid 40, the cleaning liquid 40 adhering to the guide surface 4 becomes substantially ball-shaped and easily slides down on the guide surface 4. Therefore, the cleaning liquid 40 on the guide surface 4 is also quickly dried and removed. Therefore, the drying time of the substrate 30 can be shortened, and the substrate 30 can be reliably dried.

Further, since the holding body 1 is made of synthetic resin, it is possible to suppress the damage and deformation of the base 30 due to the contact of the base 30 with the holding body 1 when the base 30 is held by the holding body 1.

Further, in the holding body 1, the portion of the receiving portion 10 on the axis P (shaft portion 12) side of the receiving surface 11 is formed so as to be at a height lower than that of the receiving surface 11, so that the portion is formed during drying. It is possible to suppress the problem that the cleaning liquid 40 remaining on the surface flows to the receiving surface 11 side and adheres to the lower end surface 32 of the substrate 30. As a result, the substrate 30 can be dried more reliably, and stains on the substrate 30 and pollution of the environment in the next step, which may be generated due to the remaining cleaning liquid 40, can be reliably suppressed.

Further, since the holding body main body 2 can be separated into the upper main body 2A and the lower main body 2B, when the receiving surface 11 of the receiving portion 10 of the holding body 1 is worn, the upper main body 2A and the lower main body 2B By separating and, only the receiving portion 10 (that is, the portion having the receiving surface 11) having the lower main body portion 2B integrally among the entire holding body 1 can be replaced with a new one. Therefore, it is possible to reduce the running cost of the holding body 1.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be variously modified without departing from the gist of the present invention.

For example, in the holding body according to the present invention, the receiving portion may be integrally provided on the pallet 20, or the receiving portion may not be formed in a trapezoidal shape, that is, the receiving portion of the receiving portion. May be formed on, for example, the upper surface 20a of the pallet 20.

Further, it is particularly desirable that the cylindrical body held by the holding body according to the present invention is a photosensitive drum substrate as shown in the above embodiment, but the cylindrical body is not limited to this, and other cylindrical bodies to be cleaned may be used. May be there.

INDUSTRIAL APPLICABILITY The present invention can be used for a cylinder holder used for cleaning and drying a cylindrical body such as a photosensitive drum substrate, and a method for manufacturing a photosensitive drum.

1: Holding body 2: Holding body main body 4: Guide surface 10: Receiving part 11: Receiving surface 30: Substrate (cylindrical body)
32: Lower end surface of the substrate (lower end of the cylindrical body)
40: Cleaning liquid

Claims (5)

A cylinder holder that holds the cylinder washed with the cleaning liquid in an upright position.
A holding body main body inserted and arranged inside the cylinder from the lower end opening of the cylinder,
A receiving portion having a receiving surface for receiving the lower end of the cylindrical body in contact with the lower end is provided.
The receiving surface is arranged horizontally and
The upper end portion of the holding body main body portion has a guide surface inclined outward in the radial direction with respect to the downward direction for guiding the cylindrical body to an appropriate position.
The wettability of the receiving surface to the cleaning liquid is better than the wetting property of the guide surface to the cleaning liquid.
A holding body for a cylindrical body, wherein the receiving surface is subjected to a roughening treatment as a treatment for improving the wettability . The cylinder holder according to claim 1, wherein the guide surface is not roughened. The holding body for a cylindrical body according to claim 1 or 2, wherein the portion having the guide surface and the portion having the receiving surface are separably connected. The holding body for a cylindrical body according to any one of claims 1 to 3, wherein the holding body main body portion and the receiving portion are made of synthetic resin. A method for manufacturing a photosensitive drum, wherein the photosensitive drum substrate as a cylindrical body is held upright in the holding body according to any one of claims 1 to 4, and the photosensitive drum substrate is washed with a cleaning liquid and dried.

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