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WO2000049466A1 - Appareil de formation d'image - Google Patents

Appareil de formation d'image Download PDF

Info

Publication number
WO2000049466A1
WO2000049466A1 PCT/JP1999/000760 JP9900760W WO0049466A1 WO 2000049466 A1 WO2000049466 A1 WO 2000049466A1 JP 9900760 W JP9900760 W JP 9900760W WO 0049466 A1 WO0049466 A1 WO 0049466A1
Authority
WO
WIPO (PCT)
Prior art keywords
image forming
photosensitive drum
forming apparatus
silencer
base resin
Prior art date
Application number
PCT/JP1999/000760
Other languages
English (en)
Japanese (ja)
Inventor
Yasuyuki Ohira
Mitsuo Hori
Original Assignee
Shishiai-Kabushikigaisha
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 Shishiai-Kabushikigaisha filed Critical Shishiai-Kabushikigaisha
Priority to PCT/JP1999/000760 priority Critical patent/WO2000049466A1/fr
Publication of WO2000049466A1 publication Critical patent/WO2000049466A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • 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
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • G03G5/147—Cover layers

Definitions

  • the present invention relates to an image forming apparatus having a photosensitive drum such as a copier, a facsimile machine, a laser printer, an electrophotographic printer such as an LED, and a code processor. More specifically, the present invention relates to an image forming apparatus that achieves high image quality and low noise by attenuating vibration generated in a photosensitive drum.
  • Photocopiers In photocopiers and electrophotographic printers that use the electrophotographic image forming method, a photosensitive drum is used as a printing medium.
  • the photoconductor drum is obtained by applying a photoconductor to an outer peripheral surface of a cylindrical drum formed of a conductor, and the photoconductor changes its physical property by light including image information sent from an optical writing system.
  • the antistatic latent image formed on the surface of the photosensitive drum is visualized by a toner and transferred to a recording paper (recording medium) to form an image. After the image is transferred, the toner remaining on the surface of the photosensitive drum is wiped off by a cleaning blade of a cleaning device and removed.
  • the photosensitive drum used resonates due to vibration from a motor or gear that drives the photosensitive drum to rotate. Vibration also occurs on the photosensitive drum due to friction at the time of contact with the cleaning blade. Vibration of the photosensitive drum also causes fluctuations in the rotation speed of the drum, and as a result, writing by the laser beam is performed.
  • the present invention has been made in view of such a problem in the conventional image forming apparatus, and provides an image with high image quality and low noise by reliably attenuating and removing the vibration generated in the photosensitive drum.
  • a forming device is proposed.
  • the image forming apparatus of the present invention is applied to, for example, copying machines, facsimile machines, laser printers, electrophotographic printers such as LEDs, word processors, and the like. As shown in FIG. 1, the image forming apparatus 11 uses a photosensitive drum 12 as a print medium.
  • the photoconductor drum 12 is obtained by applying a photoconductor 14 to an outer peripheral surface of a cylindrical drum 13 formed of a conductor, and the photoconductor 14 is sent from an optical writing system.
  • the light containing the image information causes a change in physical properties to form an antistatic latent image on the surface of the photosensitive drum 12.
  • the antistatic latent image formed on the surface of the photosensitive drum 12 is visualized by toner, and is transferred to a recording paper (recording medium) transported from the paper transport unit 15 to form an image. After the image is transferred, the toner remaining on the surface of the photosensitive drum 12 is wiped off by a cleaning blade 16 of a cleaning device and removed.
  • a cleaning blade 16 of a cleaning device In FIG.
  • the silencer 21 is applied to the inner peripheral surface or the outer peripheral surface of the photosensitive drum 12 in the image forming apparatus 11 configured as described above.
  • the silencer 21 shown in FIG. 1 is a cylindrical body having a substantially C-shaped cross section, and this silencer 21 is inserted into the photosensitive drum 12 to come into contact with the inner peripheral surface of the photosensitive drum 12. In addition, the vibration of the photosensitive drum 12 is attenuated and removed, and furthermore, the resonance of the surrounding parts in contact with the photosensitive drum 12 is prevented. In the embodiment shown in FIG.
  • the silencer 21 is a cylindrical body having a substantially 0-shaped cross section, and the silencer 21 is inserted into the photosensitive drum 12 to form an inner peripheral surface of the photosensitive drum 12. And attenuates and removes the vibration of the photosensitive drum 12, and further prevents resonance of peripheral components that have come into contact with the photosensitive drum 12.
  • the silencer 21 is a cylindrical body having a substantially O-shaped cross section, and the silencer 21 abuts on the inner peripheral surface of the photosensitive drum 12 and slides. The vibration of the photosensitive drum 12 is attenuated and eliminated, and furthermore, the vibration of surrounding parts in contact with the photosensitive drum 12 is prevented. Although only one silencer 21 is shown in FIG.
  • the silencer 21 is a rod-shaped member, and a plurality of silencers are joined to the inner peripheral surface of the photosensitive drum 12 so as to attenuate and remove the vibration of the photosensitive drum 12.
  • the silencer 21 is a cylindrical body having a substantially 0-shaped cross section, which comes into contact with the outer peripheral surface of the photosensitive drum 12 and slides, thereby suppressing the vibration of the photosensitive drum 12. Attenuation is removed. Also in the embodiments shown in FIGS.
  • This silencer 21 is a molding material comprising a vibration-damping resin molding pellet (hereinafter simply referred to as a pellet) in which an active component that increases the amount of dipole moment in the base resin is mixed with an inorganic filler. It was molded as The shape, size, manufacturing method, etc. of the pellets used as the molding material for the silencer are arbitrary.
  • the mixture is formed into a rod shape as shown in FIG. 4 by a strand cutting method ⁇ a hot cutting method, or the compound is
  • the shape, size, and manufacturing method of the pellets are, for example, formed into a sheet shape and formed into a cylindrical body having a C-shaped or 0-shaped cross section as shown in FIGS. 1 to 3 and 5.
  • the size of the silencer to which the pellet is applied as a molding material can be appropriately determined in consideration of the type, size, shape, use state, and the like.
  • the base resin in the pellets examples include polyvinyl chloride, polyethylene, chlorinated polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polymethyl methacrylate, poly (vinylidene fluoride), polyisoprene, polystyrene, styrene-butadiene-acrylonitrile.
  • Copolymer ABS resin
  • styrene-acrylonitrile copolymer AS resin
  • polycarbonate acrylonitrile-butadiene rubber
  • SBR styrene-butadiene rubber
  • BR butadiene rubber
  • NR natural rubber
  • Bases with a glass transition point of 40 ° C or higher such as styrene-acrylonitrile copolymer (AS resin), styrene-butylene-acrylonitrile copolymer (ABS resin), polystyrene, and polycarbonate Resin is particularly preferred as a material for a silencer that requires heat resistance and strength.
  • AS resin styrene-acrylonitrile copolymer
  • ABS resin styrene-butylene-acrylonitrile copolymer
  • polystyrene and polycarbonate Resin
  • FIG. 6 shows an arrangement state of the dipole 32 inside the base resin 31 before the vibration energy is transmitted. It can be said that the arrangement state of the dipole 32 is in a stable state.
  • the active component is a component that dramatically increases the amount of the dipole moment in the base resin.
  • the active component itself has a large dipole moment amount, or the active component itself has a dipole moment amount. Although small, it refers to a component that can dramatically increase the amount of dipole moment in the base resin by combining the active component.
  • DCHB SA 2-Sulfenamide
  • MCT 2-mercaptoverile
  • MBTS dibenzothiazyl sulfide
  • N-Si N-Si
  • a benzothiazyl group such as benzene amide (DPBS)
  • DPBS benzene amide
  • benzotriazole having an azole group bonded to a benzene ring as a mother nucleus and a phenyl group Is bonded to 2— ⁇ 2'—Hydroxoxy 3 '— (3, ", 5", 6 ⁇ tetrahydrophtalidimidemethyl) 1 5'—methylphenyl ⁇ —benzotriazole (2HPMMB), 2 - ⁇ 2 '—Hydroxoxy 5'-methylphenyl ⁇ -benzotriazole (2HMP B), 2- ⁇ 2'-hydroxy-3'_t-butyl-5'-methylphenyl ⁇ 1-5-chloro Benzotriazoles such as benzo
  • the amount of dipole moment in the active component varies depending on the type of the active component. Even when the same active ingredient is used, the amount of dipole moment generated in the base resin changes depending on the temperature when vibration energy is applied. Also, the amount of dipole moment changes depending on the magnitude of vibration energy applied to the base resin. For this reason, it is desirable to select and use the active ingredient that gives the largest amount of dipole moment in consideration of the temperature and energy at the time of application. When deciding the active ingredient to be mixed with the base resin, it is good to select a substance having a similar value in consideration of the compatibility between the active ingredient and the base resin, that is, the SP value.
  • the amount of the active ingredient is preferably 10 to 100 parts by weight based on 100 parts by weight of the base resin.
  • the amount of the active ingredient is less than 10
  • the sufficient effect of dramatically increasing the amount of the dipole moment in the base resin cannot be obtained, and the amount exceeds 100.
  • the blending amount is increased, it is not possible to expect an increase in the amount of dipole moment by the increased amount, and furthermore, there is a risk of causing a disadvantage that formation is deteriorated.
  • DCHB SA for example, a combination of DCHB SA and 2 HPMMB when ABS resin is used as a base resin, and a combination of DCHB SA, 2 HPMMB and ECD PA when polyvinyl chloride is used as a base resin, etc.
  • inorganic fillers include my scales, glass flakes, glass fiber, carbon fiber, calcium carbonate, barite, and precipitated barium sulfate. These inorganic fillers are filled for the purpose of further improving the damping performance.
  • the inorganic filler is preferably contained in a proportion of 100 to 100 parts by weight with respect to 100 parts by weight of the base resin.
  • the filling amount of the inorganic filler is less than 100, even if the filling of the inorganic filler is not sufficient, the vibration damping performance is not sufficiently improved, and conversely, the filling amount of the inorganic filler exceeds 100. Even when the amount is not actually filled, or when the mechanical strength of the silencer is reduced, adverse effects may occur. As described above, when the silencer is molded using the pellets containing the active ingredient and the inorganic filler in the base resin, the amount of the dipole moment in the base resin increases drastically. The silencer leads to excellent damping performance.
  • FIG. 1 is a schematic view showing an example in which a silencer is applied to the inner peripheral surface of a photosensitive drum in an image forming apparatus according to the present invention.
  • FIG. 2 is a schematic view showing another example in which a silencer is applied to the inner peripheral surface of the photosensitive drum.
  • FIG. 3 is a schematic diagram showing still another example in which a silencer is applied to the inner peripheral surface of the photosensitive drum.
  • FIG. 4 is a schematic view showing still another example in which a silencer is applied to the inner peripheral surface of the photosensitive drum.
  • FIG. 5 is a schematic diagram showing still another example in which a silencer is applied to the inner peripheral surface of the photosensitive drum.
  • FIG. 6 is a schematic diagram showing a dipole in the base resin.
  • FIG. 7 is a schematic diagram showing a dipole state in the base resin when vibration energy is applied.
  • FIG. 8 is a schematic diagram showing a state of a dipole in the base resin when an active ingredient is blended.
  • FIG. 9 is a graph showing the mechanical properties E ′′ (dyn e / cm 2 ) at each temperature under a frequency of 110 Hz for each of the samples of Examples 1 to 3 and Comparative Example 1.
  • AS resin Ube Sicon, S700N
  • ABS resin Sudi Riki A & L Co., Ltd., GA-704
  • CBS Sahin Chemical Industry Co., Ltd., CM Suncellar
  • My strength Karl Fischer Co., Ltd., 60 C
  • FIG. 9 shows the mechanical properties E ′′ (loss modulus) at each temperature under the frequency of 110 Hz for the samples according to Examples 1 to 4 and Comparative Example 1.
  • E ′′ loss modulus
  • Example 1 In contrast to E + 09 dyne / cm 2 , the samples according to Examples 1 and 2, which also used ABS resin as the base resin, showed that Example 1 was performed at about 70 ° C.
  • Example 2 has a peak at about 95 ° C, and the dynamic characteristics E ”at that time exceed 1.0 E + 1 Odyne / cm 2 , and the damping performance is dramatically improved.
  • the samples of Examples 3 and 4 are examples using AS resin as a base resin.
  • the mechanical property E "of Example 3 is almost the same as that of Examples 1 and 2 described above, and its peak is around 115 ° C, and is exposed to high temperatures exceeding 100 ° C.
  • the sample of Example 4 has a peak at about 50 ° C., and its performance is much higher than the values of Examples 1 to 3 described above. It can be seen that it has vibration performance.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne un appareil de formation d'image comprenant un tambour photosensible, tel qu'un copieur, un dispositif fac-similé, une imprimante laser, une imprimante électrophotographique dotée de diode électroluminescentes, ou un traitement de texte. Un silencieux formé de granulés, destinés au moulage d'une résine amortissant les vibrations, contenant une résine de base, un composant actif destiné à augmenter le moment dipolaire de la résine de base, et une charge minérale, est appliqué sur la surface périphérique interne ou externe d'un tambour photosensible d'un appareil de formation d'image. Les vibrations du tambour photosensible sont donc amorties et éliminées, ce qui permet d'obtenir des images de haute qualité et un faible bruit.
PCT/JP1999/000760 1999-02-19 1999-02-19 Appareil de formation d'image WO2000049466A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/000760 WO2000049466A1 (fr) 1999-02-19 1999-02-19 Appareil de formation d'image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/000760 WO2000049466A1 (fr) 1999-02-19 1999-02-19 Appareil de formation d'image

Publications (1)

Publication Number Publication Date
WO2000049466A1 true WO2000049466A1 (fr) 2000-08-24

Family

ID=14234968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/000760 WO2000049466A1 (fr) 1999-02-19 1999-02-19 Appareil de formation d'image

Country Status (1)

Country Link
WO (1) WO2000049466A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7181156B2 (en) 2003-07-25 2007-02-20 Ricoh Company, Ltd. Image forming apparatus using a cleaning member for preventing noises and process cartridge therefor
US7220526B2 (en) 2004-03-15 2007-05-22 Konica Minolta Holdings, Inc. Image forming method

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127567U (fr) * 1986-02-05 1987-08-13
JPS6360481A (ja) * 1986-08-30 1988-03-16 Mita Ind Co Ltd 記録装置
JPH03105348A (ja) * 1989-09-20 1991-05-02 Fuji Xerox Co Ltd ドラム状電子写真感光体
JPH05188839A (ja) * 1992-01-07 1993-07-30 Canon Inc 画像形成装置
JPH0862878A (ja) * 1994-08-24 1996-03-08 Fuji Xerox Co Ltd スパイラル状詰め物入り円筒状基体およびその作製方法
JPH08202204A (ja) * 1995-08-30 1996-08-09 Ricoh Co Ltd 電子写真用感光体ドラム
JPH09316295A (ja) * 1996-05-30 1997-12-09 Cci Corp エネルギー変換組成物
JPH10138365A (ja) * 1996-11-12 1998-05-26 Cci Corp 非拘束型制振材
JPH10139933A (ja) * 1996-11-07 1998-05-26 Cci Corp 防振材料
JPH10232584A (ja) * 1997-02-20 1998-09-02 Ricoh Co Ltd 画像形成装置
JPH10244020A (ja) * 1997-03-07 1998-09-14 Cci Corp グリップテープ
JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127567U (fr) * 1986-02-05 1987-08-13
JPS6360481A (ja) * 1986-08-30 1988-03-16 Mita Ind Co Ltd 記録装置
JPH03105348A (ja) * 1989-09-20 1991-05-02 Fuji Xerox Co Ltd ドラム状電子写真感光体
JPH05188839A (ja) * 1992-01-07 1993-07-30 Canon Inc 画像形成装置
JPH0862878A (ja) * 1994-08-24 1996-03-08 Fuji Xerox Co Ltd スパイラル状詰め物入り円筒状基体およびその作製方法
JPH08202204A (ja) * 1995-08-30 1996-08-09 Ricoh Co Ltd 電子写真用感光体ドラム
JPH09316295A (ja) * 1996-05-30 1997-12-09 Cci Corp エネルギー変換組成物
JPH10139933A (ja) * 1996-11-07 1998-05-26 Cci Corp 防振材料
JPH10138365A (ja) * 1996-11-12 1998-05-26 Cci Corp 非拘束型制振材
JPH10232584A (ja) * 1997-02-20 1998-09-02 Ricoh Co Ltd 画像形成装置
JPH10244020A (ja) * 1997-03-07 1998-09-14 Cci Corp グリップテープ
JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7181156B2 (en) 2003-07-25 2007-02-20 Ricoh Company, Ltd. Image forming apparatus using a cleaning member for preventing noises and process cartridge therefor
US7295802B2 (en) 2003-07-25 2007-11-13 Ricoh Company, Ltd Image forming apparatus using a cleaning unit for preventing noises
US7220526B2 (en) 2004-03-15 2007-05-22 Konica Minolta Holdings, Inc. Image forming method

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