WO2007132838A1 - Tuyau de base pour tambour photosensible - Google Patents

Tuyau de base pour tambour photosensible Download PDF

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Publication number
WO2007132838A1
WO2007132838A1 PCT/JP2007/059939 JP2007059939W WO2007132838A1 WO 2007132838 A1 WO2007132838 A1 WO 2007132838A1 JP 2007059939 W JP2007059939 W JP 2007059939W WO 2007132838 A1 WO2007132838 A1 WO 2007132838A1
Authority
WO
WIPO (PCT)
Prior art keywords
photosensitive drum
tube
thickness
drum base
base tube
Prior art date
Application number
PCT/JP2007/059939
Other languages
English (en)
Japanese (ja)
Inventor
Katsuhiko Mori
Tadahiro Tokumoto
Atsushi Watanabe
Kazuo Nishikawa
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2007132838A1 publication Critical patent/WO2007132838A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/10—Bases for charge-receiving or other layers
    • G03G5/102—Bases for charge-receiving or other layers consisting of or comprising metals
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum

Definitions

  • the present invention relates to a photosensitive drum base tube that serves as a substrate for a photosensitive drum such as an electrophotographic printer such as a laser printer or a color copying machine.
  • the photosensitive drum uses, as a base, an elementary tube formed of aluminum or an aluminum alloy in a cylindrical body having both ends opened, and an organic photoreceptor, amorphous silicon, or selenium is formed on the surface of the elementary tube. It is manufactured by applying a photosensitizer such as The above-mentioned raw tube serving as the substrate of the photosensitive drum is required to have a small surface roughness and good smoothness and no surface defects such as scratches.
  • the photosensitive drum base tube 42 is manufactured through the steps shown in FIGS. 6A to 6B.
  • a cylindrical pretreatment tube 40 is manufactured by extruding or drawing aluminum or an aluminum alloy as a raw material. Since there are many irregularities and scratches on the outer peripheral surface of the pretreatment tube 40, a bite is formed on the surface of one end of the pretreatment tube 40 while the pretreatment tube 40 is rotated while holding both ends. 41 is abutted and this cutting tool 41 is held at a predetermined relative position to the surface of the pretreatment tube 40.
  • the pretreatment tube manufactured through the same process as described above is subjected to centerless polishing calorie in the first process, thereby removing large scratches on the surface and adjusting the dimensional accuracy such as roundness.
  • fine scratches on the surface are also removed, and in addition, by applying roller versioning in the third step, the surface is smoothed and light sensitive. It has also been proposed to manufacture a drum pipe (see, for example, Patent Document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 2000-122310
  • the photosensitive drum base tube 42 shown in FIG. 6B moves the cutting tool 41 in the axial direction of the pretreatment tube 40 with respect to the rotating pretreatment tube 40 in the process of FIG. 6A. Since it is manufactured by cutting, a processed pattern 43 having fine groove-like irregularities extending in the direction perpendicular to the axial direction of the cylindrical pretreatment tube 40, that is, along the circumferential direction, is formed on the surface. It is done. For this reason, there is a problem that the print quality is easily affected by noise during exposure by a light source when used as a photosensitive drum.
  • the processed pattern 43 is formed in a groove shape along the rotation direction of the photosensitive drum, if a defect exists in a part of the processed pattern 43, the electrostatic pattern corresponding to the defect is exposed during exposure. As a result of noise appearing in the image appearing continuously over the entire circumference in the circumferential direction as the photosensitive drum rotates, the print quality is significantly reduced.
  • the photosensitive drum base tube 42 is manufactured through a process of cutting the pretreatment tube 40 by linearly moving the cutting tool 41 to one end side of the pretreatment tube 40 to the other end side. As the number of man-hours for the cutting process increases, the cost of the process increases.
  • the pretreatment tube 40 is manufactured by extruding or drawing with a highly stretchable aluminum or aluminum alloy as a raw material, so that dimensional accuracy such as roundness is easily generated. There is a limit to reducing the tube thickness if the required value is to be secured.
  • the photosensitive drum base tube disclosed in Patent Document 1 has a high precision so as not to cause surface defects. Since it can be mirror-finished every time, it has the advantage of sufficiently ensuring the quality required for the photosensitive drum tube, but it is manufactured through a process that combines at least the first to third processes. Therefore, there is a problem that the processing cost becomes too high.
  • the present invention has been made in view of the above-described conventional problems, and provides a photosensitive drum base tube that can suppress the influence of noise on exposure by a light source and obtain high print quality when used as a photosensitive drum.
  • the purpose is to provide.
  • a photosensitive drum base tube of the present invention is a photosensitive drum base tube constituting a photosensitive drum by applying a photosensitive agent on an outer peripheral surface, and is made of aluminum or an aluminum alloy.
  • the cylindrical body is open at both ends, and the outer peripheral surface of the cylindrical body is provided with a processing pattern having groove-shaped fine irregularities extending in parallel along the axial direction of the cylindrical body.
  • the photosensitive drum base tube is configured as a photosensitive drum and used in a printer or a copying machine, even if a defect exists in a part of a processed pattern, electrostatic discharge corresponding to the defect during exposure is performed.
  • the noise generated in the image only appears once per rotation of the photosensitive drum, and is less susceptible to noise during exposure by the light source, improving print quality.
  • the processing pattern is formed to have a surface roughness set to a processing depth force S of 10 m or less in the tube thickness direction!
  • FIG. 1A to 1B show a photosensitive drum base tube according to an embodiment of the present invention
  • FIG. 1A is a perspective view
  • FIG. 1B is an IB-IB line in FIG. 1A. It is sectional drawing.
  • FIG. 2 is a longitudinal sectional view showing a photosensitive drum tube according to another embodiment of the present invention.
  • FIGS. 3A to 3C are schematic cross-sectional views showing a first step in manufacturing the photosensitive drum base tube in the order of steps.
  • FIG. 4 is a schematic diagram showing a second step in manufacturing the photosensitive drum base tube.
  • FIG. 5A is a perspective view showing pellets used as a forming material in the first step
  • FIG. 5B is a perspective view showing an intermediate cup body obtained in the first step
  • FIG. It is a perspective view which shows the pretreatment pipe
  • FIG. 6A is a schematic perspective view showing a manufacturing process of a conventional photosensitive drum element tube
  • FIG. 6B is a perspective view of a conventional photosensitive drum element tube.
  • FIG. 1A and IB show a photosensitive drum base tube 1 according to an embodiment of the present invention
  • FIG. 1A is a perspective view
  • FIG. 1B is a cross-sectional view taken along line IB-IB in FIG. 1A
  • the photosensitive drum base tube 1 is made of aluminum or aluminum alloy and is formed into a cylindrical body having both ends open.
  • a cylindrical body is formed on the outer peripheral surface of the outer peripheral surface excluding the held portions 2 and 3 near both ends.
  • a processed pattern 4 having groove-like fine irregularities extending in parallel along the axial direction of the body is formed.
  • This machining pattern 4 is set so that the machining depth Ra in the tube thickness direction is 10 / zm or less.In this embodiment, the machining depth Ra is 1.31 / ⁇ ⁇ to 1. Set to 34 m
  • the photosensitive drum base tube 1 is formed such that the tube thickness Rb of the held portions 2 and 3 at both ends is larger than the tube thickness Rc of the main portion therebetween.
  • the tube thickness Rc of the main part is about 0.03 mm to 0.2 mm smaller than the tube thickness Rb of the held parts 2 and 3 and has a length of 250 mm or more.
  • the pipe thickness Rc is set to about 0.3m to 0.7mm.
  • the pipe thickness Rc of the main part should be set to 0.08 to 0.3% of the length of the raw pipe 1. This ensures the required strength even when the heat capacity is low. it can.
  • the photosensitive drum base tube 1 is formed so that a processed pattern 4 having groove-like fine irregularities is arranged along the axial direction of the cylindrical body, that is, along a direction orthogonal to the rotation direction of the photosensitive drum. This improves print quality, which is less susceptible to noise during exposure with a light source when used in printers and copiers. This is because even if a defect exists in a part of the processed pattern 4, an electrostatic image is generated corresponding to the defect at the time of exposure. This is because the generated noise only appears once per rotation of the photosensitive drum, and the influence of the noise is extremely small.
  • the processed pattern 4 is formed so that the processing depth Ra is set to 10 ⁇ m or less, which suppresses the occurrence of printing defects such as uneven printing and black spots, and improves the print quality. Further improvement can be achieved.
  • the photosensitive drum base tube 1 is manufactured by a manufacturing method to be described later, and the tube thickness of the main part is 0.3 mn! Since it can be formed into a thin shape of about 0.7 mm, it can save material consumption and reduce material costs, and can improve dimensional accuracy such as roundness, and it can also be used as a photosensitive drum. The print quality can be further improved.
  • the held portions 2 and 3 at both ends which are held by a rotational drive source and rotated on the shaft have a tube thickness Rb larger than that of the main portion.
  • the strength increases as the tube thickness Rb increases, and it is driven to rotate in a stable holding state, and the secondary effect of increasing the roundness is also obtained.
  • the tube thickness Rb of the held portions 2 and 3 is preferably set to be about 0.2 mm larger than the tube thickness Rc of the main portion. This prevents the outer diameter of the retained parts 2 and 3 from becoming too large after pipe production, thereby reducing the contact area of the main part with respect to the printing paper, as well as both high-precision roundness and light weight. Can be satisfied.
  • FIG. 2 is a longitudinal sectional view showing a photosensitive drum base tube 7 according to another embodiment of the present invention.
  • FIG. 2 what is substantially the same as or equivalent to FIGS. 1A to 1B is shown.
  • the same reference numerals are assigned and duplicate descriptions are omitted.
  • the depth Ra of the processed pattern 4 and the tube thickness Rc of the main part are set to be the same as those in the above-described one embodiment.
  • the pipe thickness Rb is formed to be the same as the pipe thickness Rc of the main part, and the outer diameters of the held parts 2 and 3 are made smaller than the outer diameter of the main part.
  • the strength of the material against externally applied torsion, etc., is the same as the diameter when the thickness is the same. Big Therefore, it has the same strength as the one embodiment described above.
  • the held parts 2 and 3 are preferably set to have a shape whose inner diameter is 2.5 to 5% smaller than the main part. This is preferable because wrinkles and the like do not occur when both ends are reduced in diameter after manufacturing a cylindrical body having the same tube thickness as a whole.
  • Pellets 8 formed into a disk shape from aluminum or an aluminum alloy as a material shown in FIG. 5A are impact-molded in the first step shown in FIGS. 3A to 3C.
  • the bottomed cylindrical intermediate cup body 9 shown in FIG. 5B is formed.
  • This intermediate cup body 9 is processed in the second step shown in FIG. 4 by DI (drawing and ironing, that is, both drawing and ironing are performed continuously at once) to obtain a desired shape shown in FIG. 5C.
  • a pretreatment tube 10 having a reduced thickness is formed. If both ends of the pretreatment tube 10 are cut along a cutting line indicated by a one-dot chain line, the photosensitive drum base tube 1 shown in FIG. 1A is obtained.
  • FIGS. 3A to 3C show a press machine that performs impact molding in the first step, and a die 12 is fixed to a die holder 11.
  • a disk-shaped pellet 8 as a material shown in FIG. 5A is supplied to the calorific hole 12a of the die 12.
  • aluminum or an aluminum alloy is used because of the light weight of the photosensitive drum to be manufactured and the extensibility required for impact molding in the first process. Yes.
  • aluminum alloys having chemical components similar to JIS standards A3003, A3004 or A3005 are preferred.
  • Such an aluminum alloy has extensibility that is extremely suitable for impact molding, and is preferable after molding, and can provide work hardening.
  • the pellet 8 is preferably a disk having a thickness of 8 mm to 12 mm.
  • the processing strain is removed from the intermediate cup body 9 by performing a heat treatment at 350 ° C. for 8 hours in an air-exposed state. Even if this heat treatment is omitted, there is no problem because the Karoe distortion can be sufficiently corrected in the DI processing in the second step to be described next.
  • the punch 14 that has finished moving by a predetermined stroke moves toward the original position separated from the die 12.
  • the molded intermediate cup body 9 is pulled out from the force hole 12a by the punch 14 while attached to the punch 14, and then removed from the punch 14 by the stripper 17.
  • the thickness of the intermediate cup body 9 is determined by the gap between the punch 14 and the hole wall of the processing hole 12a of the die 12.
  • the intermediate cup body 9 is preferably impact-molded by setting the ratio of the thickness of the side surface portion to the thickness of the bottom surface portion in the range of 0.65 to 1.
  • the intermediate cup body 9 with a thin side face portion requires less processing load during the subsequent DI caulking, but on the other hand, it becomes difficult to control to obtain the raw pipe 1 having the required thickness. This is because the intermediate cup body 9 having a thick side surface can perform good control for obtaining the base tube 1 having a required tube thickness, but increases the processing load during DI casting.
  • the intermediate cup body 9 is formed by drawing a plate material having a thickness of about 0.6 to 1.2 mm made of aluminum or aluminum alloy into a cup shape instead of the impact molding of the above embodiment. May be produced. In this case, it is possible to obtain an intermediate cup body with less processing distortion of the material compared to the case of impact molding.
  • the intermediate cup body 9 performs DI drawing and ironing processing in a single stage by a drawing and ironing machine in a continuous manner.
  • the pretreatment tube 10 having a desired shape shown in FIG. 5C is formed.
  • This drawing and ironing machine includes an intermediate product conveying section 18, a die mechanism 19, a stripper 20, and the like.
  • the die mechanism 19 is provided with a drawing die 19A and first to third ironing dies 19B to 19D, and these dies 19A to 19D are positioned so as to be concentric with the axis of the DI punch 21. They are arranged in series.
  • the DI punch 21 has two small-diameter portions 21a (only one is shown) formed to have the same outer diameter as the inner diameters of the held portions 2 and 3 of the raw tube 1 shown in FIG. It is formed in an arrangement corresponding to the distance between the held parts 2 and 3.
  • the intermediate product transport unit 18 sequentially transports the intermediate cup body 9 to the molding site.
  • the intermediate cup body 9 that has been transported to the molding location and positioned is driven to the outer shape of the DI punch 21 by the drawing die 19A when the DI punch 21 is driven by a flywheel (not shown). It is squeezed to form a shape along.
  • the cup body that has passed through the drawing die 19A is slightly reduced in diameter with respect to the intermediate cup body 9 and deformed into a barrel length, but there is no change in its wall thickness.
  • the cup body that has finished passing through the drawing die 19A is subjected to the first stage ironing process by the first ironing die 19B as the DI punch 21 is pushed, and the side peripheral portion is It is stretched and its thickness is slightly reduced, and its hardness is increased by work hardening.
  • the cup body that has finished passing through the first ironing die 19B has a second ironing die 19C having a smaller ironing hole than the first ironing die 19B as the DI punch 21 is further pushed.
  • the second ironing die 19D having a smaller ironing force hole than the second ironing die 19C is sequentially subjected to the second stage and the third ironing process, and the side peripheries thereof are sequentially stretched to be meat. As the thickness is further reduced, the hardness is further increased by the case hardening.
  • the third ironing die 19D which is the final die, is a fine uneven shape corresponding to the processed pattern 4 of the photosensitive drum element tube 1 in FIG. 1A, that is, along the axial direction.
  • An uneven surface roughness forming pattern (not shown) having fine grooves extending in the direction is formed. Therefore, when the cup body is pushed by the DI punch 21 and passes through the third ironing die 19D, the cup body has a fine pattern for forming the surface roughness of the third ironing die 19D. Since it is linearly moved in a direction that matches the groove shape, a processed pattern 4 shown in FIG. 1A is formed at a required location on the outer surface of the cup body.
  • the held portions 2 and 3 having a large tube thickness shown in FIG. 1A are formed by the small diameter portion 21a of the DI punch 21 at two locations having a predetermined interval of the cup body.
  • the pretreatment tube 10 shown in FIG. 5C is completed.
  • the pretreatment tube 10 is cut along a cutting line shown by a one-dot chain line in FIG. 5C, whereby the bottom of the pretreatment tube 10 and The ears are removed to form the photosensitive drum base tube 1 shown in FIG. 1A.
  • the processing pattern 4 provided in the main part has fine grooves extending in parallel to the axial direction, and the cover having a pipe thickness larger than the main part formed at both ends.
  • the photosensitive drum base tube 1 shown in FIG. 1A having the holding portions 2 and 3 can be manufactured with high accuracy.
  • the unevenness depth Ra of the processed pattern 4 is determined by the surface roughness forming pattern provided on the inner peripheral surface of the ironing die 19D at the final stage of the DI cutting machine. Prepare multiple types of ironing dies 19D with various surface roughness forming patterns, select the ironing dies 19D with the required surface roughness forming patterns corresponding to the photosensitive drum to be manufactured, and perform DI processing. Just install it in the machine. However, all of the processed patterns 4 to be formed are set to an uneven depth Ra of 10 m or less, which suppresses the occurrence of uneven printing and black spots when used as a photosensitive drum.
  • the processing depth Ra of the processed pattern 4 was 1.31 ⁇ m to l.34 ⁇ in the actual measurement value of the prototype by the inventors.
  • the manufacturing method described above produces a bottomed cylindrical intermediate cup body 9 by impact molding, which can be manufactured in an arbitrary shape in a single process, and this intermediate cup body 9 is previously formed by DI molding. Since it is processed into the processing tube 10, it has only the first and second steps that can be formed by only one stroke movement of the punches 14 and 21. Compared to the case of manufacturing by combining cutting with a cutting tool and many processes as in the past, the number of processes is remarkably small and the productivity is high, so that the manufacturing cost is reduced and the manufacturing can be made at a low cost.
  • the pipe thickness to be formed by the gap between the inner peripheral surface of the final stage ironing die 19D and the outer peripheral surface of the DI punch 21 is arbitrarily set. It can be set and formed with high accuracy.
  • the roundness can be set by the relative position of each die 19A to 19D and the DI punch, so that sufficient hardness can be achieved by increasing the processing hardness while reducing the pipe thickness as high as possible.
  • Element tube 1 can be manufactured. For example, according to actual measurements, it was confirmed that the roundness of the final die 19D can be reduced to 5 m or less, and a cylindrical degree of 0.05 mm or less can be obtained in the raw tube 1 after fabrication.
  • the above-mentioned tube thickness is set so that the ironing ratio with respect to the tube thickness of the intermediate cup body 9 is within a range of 30 to 80% and DI check is performed. Specifically, it has a length of 250mm, 0.3mn!
  • the raw tube 1 with a very thin tube thickness of ⁇ 0.7mm can be manufactured easily and with high accuracy, and the cost can be further reduced by reducing the amount of material used as the tube thickness decreases.
  • the pretreatment tube 10 is an intermediate cup body 9 Since the DI is processed, the pretreatment tube 10 having a desired shape can be stably manufactured.
  • the DI punch 21 having the small diameter portion 21a by using the DI punch 21 having the small diameter portion 21a, it is possible to easily process the one having a step of about 0.1 mm, so that the tube thickness larger than the tube thickness of the main portion is obtained.
  • the held parts 2 and 3 can be formed at both ends with high accuracy.
  • a DI force test is performed using a cylindrical DI punch that does not have the small diameter portion 2 la.
  • the cut both ends are press-fitted into a reduced diameter tube having a guide slope. The procedure is to form the held parts 2 and 3.
  • the photosensitive drum base tube of the present invention is a groove-like fine unevenness extending in parallel along the axial direction of the cylindrical body on the outer peripheral surface of the cylindrical body having openings at both ends formed of aluminum or an aluminum alloy. Therefore, it is possible to provide a photosensitive drum in which the influence of noise during exposure by a light source is reduced and print quality is improved.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

L'invention concerne un tuyau de base (1) pour tambour photosensible qui est formé en recouvrant la surface périphérique externe du tuyau d'un agent photosensible. Le tuyau est un corps cylindrique constitué d'aluminium ou d'un alliage d'aluminium, dont les deux extrémités sont ouvertes. Un motif (4), avec de fines irrégularités en forme de sillons s'étendant parallèlement les unes aux autres dans la direction axiale du corps cylindrique, est formé sur la surface périphérique externe du corps cylindrique. Ainsi, quand le tuyau de base est utilisé pour un tambour photosensible, l'influence du bruit sur l'exposition à une source lumineuse peut être supprimée et une qualité d'impression élevée peut être obtenue.
PCT/JP2007/059939 2006-05-16 2007-05-15 Tuyau de base pour tambour photosensible WO2007132838A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006136852A JP2007310021A (ja) 2006-05-16 2006-05-16 感光ドラム用素管
JP2006-136852 2006-05-16

Publications (1)

Publication Number Publication Date
WO2007132838A1 true WO2007132838A1 (fr) 2007-11-22

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PCT/JP2007/059939 WO2007132838A1 (fr) 2006-05-16 2007-05-15 Tuyau de base pour tambour photosensible

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WO (1) WO2007132838A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010032756A (ja) * 2008-07-29 2010-02-12 Mitsubishi Chemicals Corp 電子写真感光体用円筒状押出し原管、及びその製造方法、並びに電子写真感光体用円筒状基体の製造方法、並びに電子写真感光体ドラム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5648382B2 (ja) * 2010-09-15 2015-01-07 株式会社リコー 電子写真感光体、並びに画像形成装置及びプロセスカートリッジ
JP5942693B2 (ja) * 2012-08-10 2016-06-29 富士ゼロックス株式会社 電子写真感光体、画像形成装置およびプロセスカートリッジ

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JPH0572785A (ja) * 1991-09-17 1993-03-26 Mitsubishi Kasei Corp 電子写真感光体用基体及びその製造方法
JPH05150533A (ja) * 1991-11-29 1993-06-18 Canon Inc 電子写真装置用ローラー
JPH07319191A (ja) * 1994-05-19 1995-12-08 Showa Alum Corp 感光体基盤用アルミニウム管およびその製造方法
JPH08272119A (ja) * 1995-03-31 1996-10-18 Showa Alum Corp 感光ドラム用アルミニウム素管及び該素管を用いた感光ドラム用アルミニウム管の製造方法
JPH0943885A (ja) * 1995-08-03 1997-02-14 Dainippon Ink & Chem Inc 電子写真用感光体
JP2000235330A (ja) * 1998-04-03 2000-08-29 Ueno Hiroshi 感光ドラム基材と感光ドラム・ユニット
JP2001188373A (ja) * 1999-10-21 2001-07-10 Naito Seisakusho:Kk 感光体ドラム用基体の製造方法および感光体ドラム用基体
JP2002210531A (ja) * 2001-01-17 2002-07-30 Toyo Seikan Kaisha Ltd 金属円筒体の製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572785A (ja) * 1991-09-17 1993-03-26 Mitsubishi Kasei Corp 電子写真感光体用基体及びその製造方法
JPH05150533A (ja) * 1991-11-29 1993-06-18 Canon Inc 電子写真装置用ローラー
JPH07319191A (ja) * 1994-05-19 1995-12-08 Showa Alum Corp 感光体基盤用アルミニウム管およびその製造方法
JPH08272119A (ja) * 1995-03-31 1996-10-18 Showa Alum Corp 感光ドラム用アルミニウム素管及び該素管を用いた感光ドラム用アルミニウム管の製造方法
JPH0943885A (ja) * 1995-08-03 1997-02-14 Dainippon Ink & Chem Inc 電子写真用感光体
JP2000235330A (ja) * 1998-04-03 2000-08-29 Ueno Hiroshi 感光ドラム基材と感光ドラム・ユニット
JP2001188373A (ja) * 1999-10-21 2001-07-10 Naito Seisakusho:Kk 感光体ドラム用基体の製造方法および感光体ドラム用基体
JP2002210531A (ja) * 2001-01-17 2002-07-30 Toyo Seikan Kaisha Ltd 金属円筒体の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010032756A (ja) * 2008-07-29 2010-02-12 Mitsubishi Chemicals Corp 電子写真感光体用円筒状押出し原管、及びその製造方法、並びに電子写真感光体用円筒状基体の製造方法、並びに電子写真感光体ドラム

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