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31. 发明专利

JPH06282092A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH06282092A
公开(公告)日：1994-10-07
申请号：JP9041393
申请日：1993-03-26
申请人： CANON KK
发明人： NAKAMURA KAZUNARI , SEKIYA MICHIYO , MARUYAMA AKIO
IPC分类号： G03G5/147
摘要： PURPOSE:To provide an electrophotographic sensitive body excellent in slidability, having durability against the generation of wear and flaw on the surface due to rubbing, without the surface resistance being lowered by the deposition of a corona product generated in a repeated electrophotographic process, capable of maintaining a high picture quality even at high humidity, without the residual potential being accumulated or the sensitivity lowered in the repeated electrophotographic process and exhibiting a stabilized electrophotographic characteristic. CONSTITUTION:This electrophotographic sensitive body has a photoconductive layer and a protective layer on a conductive substrate. The protective layer is formed by dispersing and incorporating conductive metal oxide fine particles in a binder resin contg. a resin obtained by curing a curable acrylic monomer shown by the structural formula.

32. 发明专利

JPH06236063A ELECTROPHOTORECEPTOR, ELECTROPHOTOGRAPHIC DEVICE AND DEVICE UNIT WITH SAME 失效
公开(公告)号：JPH06236063A
公开(公告)日：1994-08-23
申请号：JP31811993
申请日：1993-12-17
申请人： CANON KK
发明人： MARUYAMA AKIO , NAKAMURA KAZUNARI , NAGAHARA SUSUMU , AMAMIYA SHOJI , TSUJI HARUYUKI , SEKIYA MICHIYO , YAMAGAMI MASAAKI
IPC分类号： G03G5/147
摘要： PURPOSE:To provide an electrophotoreceptor having a protective layer having excellent transparency and excellent uniformity of conductivity so that excellent picture images can be stably obtd. even for repeated use, and to provide an electrophotographic device and a device unit having the same body. CONSTITUTION:This electrophotoreceptor has a photosensitive layer on a conductive supporting body, and has a protective layer on the photosensitive layer. The protective layer contains conductive particles and resin obtd. by polymn. of compd. having two ion polymerizable functional groups. The electrophotographic device and a facsimile equipment have this electrophotographic sensitive body.

33. 发明专利

JPH06130711A ELECTROPHOTOGRAPHIC DEVICE, DEVICE UNIT AND FACSIMILE EQUIPMENT 失效
公开(公告)号：JPH06130711A
公开(公告)日：1994-05-13
申请号：JP28637592
申请日：1992-10-23
申请人： CANON KK
发明人： SAKO SHUNKAI , KASHIMURA NOBORU , IKESUE TATSUYA , AMAMIYA SHOJI , NAKAMURA KAZUNARI , TSUJI HARUYUKI , SEKIYA MICHIYO , YAMAGAMI MASAAKI
IPC分类号： G03G5/147 , G03G15/00 , G03G21/00 , G03G21/10 , H04N1/29
摘要： PURPOSE:To provide an electrophotographic device, a device unit and a facsimile equipment having excellent cleaning property and durability and capable of obtaining excellent picture from the beginning to after the endurance. CONSTITUTION:An electrophotographic sensitive body in the electrophotographic device, the device unit and the facsimile equipment contains 5.0-70.0wt.% fluorine atom containing resin particle based on total weight of a protective layer in the surface protective layer and has 0.1-5.0mum surface roughness by the average surface roughness of 10 measurements or has 0.1-20.0 surface hardness by taper abrasion test method and 0.001-1.2 surface friction coefficient and the cleaning means is a rubber elastic body made blade and the linear pressure of the blade to the photosensitive body is 20.0-50.0g/cm.

34. 发明专利

JPH0689043A ELECTROPHOTOGRAPHIC SENSITIVE BODY, AND ELECTROPHOTOGRAPHIC APPARATUS AND FACSIMILE HAVING THE SAME 失效
公开(公告)号：JPH0689043A
公开(公告)日：1994-03-29
申请号：JP26433692
申请日：1992-09-07
申请人： CANON KK
发明人： YAMAGAMI MASAAKI , KASHIMURA NOBORU , SAKO SHUNKAI , IKESUE TATSUYA , NAKAMURA KAZUNARI , AMAMIYA SHOJI
IPC分类号： G03G5/147 , G03G9/08 , H04N1/29
摘要： PURPOSE:To obtain the electrophotographic sensitive body superior in durability even in the case of a toner containing an external additive high in hardness and abrasive power. CONSTITUTION:The electrophotographic sensitive body provided on a conductive substrate with at least one photosensitive layer is uniformly electrically charged, exposed to form a latent image, developed with a dry toner containing fine particles high in hardness as an external additive, and transferred to a transfer paper or the like, and the outermost layer of the electrophotographic sensitive body contains a polymer or a copolymer of a monomer or monomers selected from vinyl fluoride, vinylidene fluoride, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, and perfluoroalkyl vinyl ether, or fine particles of carbon fluoride represented by (CF)n or (CF2)n in an amount of >=10 weight %, and the electrophotographic apparatus and facsimile are manufactured by using it, thus permitting the obtained electrophotographic sensitive body to be superior in durability, and freed of image trailing and dropout of transfer and the like.

35. 发明专利

JPH04178650A ELECTROPHOTOGRAPHIC SENSITIVE BODY WITH LIGHT RECEIVING LAYER CONTAINING POLYSILANE COMPOUND 失效
公开(公告)号：JPH04178650A
公开(公告)日：1992-06-25
申请号：JP30611590
申请日：1990-11-14
申请人： CANON KK
发明人： SUMINO FUMIO , NAKAMURA KAZUNARI , NAGAHARA SUSUMU , TANAKA HISAMI
IPC分类号： G03G5/07 , C08G77/48 , C08G77/60 , C08L83/00 , C08L83/02 , C08L83/16 , C09D183/04 , C09D183/16
摘要： PURPOSE:To obtain a sensitive body having superior electrophotographic characteristics by rendering the electric charge transferring function of a sensitive body to a layer contg. a dispersed polysilane compd. CONSTITUTION:An electric charge generating layer 2 is formed by vapor- depositing an electric charge generating material or dispersing this material in a resin binder and carrying out coating and drying. A layer 1 contg. dispersed polysilane is formed as follows: a resin binder 5 is dispersed in an org. solvent, polysilane powder 4 is added and dispersed with a dispersing machine to prepare a dispersion liq., coating with this dispersion liq. is carried out by wire bar coating, dip coating, doctor blade coating, spray coating, roll coating or bead coating and the liq. is dried. The thickness of the layer 1 is 4-30mum, preferably 7-20mum.

36. 发明专利

JPH0347554A SPRAY TYPE COATING APPARATUS 失效
公开(公告)号：JPH0347554A
公开(公告)日：1991-02-28
申请号：JP17903689
申请日：1989-07-13
申请人： CANON KK
发明人： TAKEMURA TSUGIKO , NAKAMURA KAZUNARI , HONDA MITSURU , TANAKA SHIGETO
IPC分类号： B05B13/02 , B05B15/04
摘要： PURPOSE:To prevent the adhesion of coating material to a part not requiring the formation of a film by arranging a masking mechanism moving in synchronous relation to the movement of an object to be coated in the vicinity of the object to be coated in opposed relation to a spray nozzle. CONSTITUTION:Prepared coating material is supplied to a spray gun 5 from a storage tank 9 through a filter 8 and a conduit 7 and sprayed so as to expand in the pattern 4 corresponding to the caliber and shape of a nozzle chip to be atomized. A ring-shaped masking mechanism 12 is mounted to a receiving jig 12 to partially cover the terminal of an object 1 to be coated in an annular shape. In coating, the annular coated part becomes a boundary to clearly partition the film of the object to be coated and the uniformity of the end part of the object to be coated can be secured. By this method, a product reduced in a film fault is obtained.

37. 发明专利

JPH02273532A AGITATING METHOD FOR COATING MATERIAL 失效
公开(公告)号：JPH02273532A
公开(公告)日：1990-11-08
申请号：JP9310789
申请日：1989-04-14
申请人： CANON KK
发明人： HONDA MITSURU , NAKAMURA KAZUNARI , TANAKA SHIGETO , MATSUSHIGE NAOKI , TAKEMURA TSUGUKO
IPC分类号： B01F11/00
摘要： PURPOSE:To agitate a coating material effectively almost without wrapping air therein by drawing the coating material in a container in the circumferential tangent line of an inner peripheral wall of an inner peripheral lower section in a cylindrical container for agitating the coating material and injecting the drawn coating material into the container. CONSTITUTION:A pigment dispersion group-coating material 4 is fed into a cylindrical container 1 for agitating a coating material, and a cover is placed on the container 1, and then an expansion pump 2 is actuated. As said pump 2 is expanded, so the coating material in the container 1 is drawn once into the pump, and then the coating material is injected into the container 1 as the pump is contracted. Said injection is carried out in the direction of the inner peripheral wall-lower section of the container 1 and in the circumferential tangent line direction of said inner peripheral wall, and the injected coating material generates swirl flow 3 in the container 1. As a result, air is scarcely wrapped in and effective agitation of the coating material can be carried out.

38. 发明专利

JPH02272564A PRODUCTION OF ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH02272564A
公开(公告)日：1990-11-07
申请号：JP9310689
申请日：1989-04-14
申请人： CANON KK
发明人： HONDA MITSURU , NAKAMURA KAZUNARI , MATSUSHIGE NAOKI , TANAKA SHIGETO , TAKEMURA TSUGUKO
IPC分类号： G03G5/05
摘要： PURPOSE:To uniformize the distribution of the coating compd. particles in a coating film by heating a cylindrical base from the inside thereof in an initial period of a drying to finger touch and preventing the movement of the particles in the radial direction within the coating liquid film occurring in the difference in the grain size or sp. gr. of the coating compd. components by the centrifugal force of rotation. CONSTITUTION:After the coating liquid is applied on the surface of the cylindrical base 1, the base is subjected to a leveling rotation for a specified period of time and thereafter, hot wind is blown by a blower 15 into the cylindrical base 1 in the initial period of the drying to finger touch to accelerate the evaporation of the coating component solvent in the coated film 4. The gradient of temp. and concn. is generated in the coating liquid film 4 by evaporation and the temp. on the surface of the coating film 4 is lowered by the evaporation heat. The liquid near the base 1 is heated and is forced to move toward the surface of the coating film. Such convection is actively generated by the heating in the base 1 and the movement of the coating components is generated. The movement of the coating components in the radial direction within the coating liquid film 4 occurring in the difference in the grain size or sp. gr. of the coating components by the centrifugal force of rotation of the base 1 is, therefore, prevented. The coating compd. particles are uniformly distributed in the coated film in this way.

39. 发明专利

JPH02272563A PRODUCTION OF ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH02272563A
公开(公告)日：1990-11-07
申请号：JP9310489
申请日：1989-04-14
申请人： CANON KK
发明人： HONDA MITSURU , NAKAMURA KAZUNARI , MATSUSHIGE NAOKI , TANAKA SHIGETO , TAKEMURA TSUGUKO
IPC分类号： G03G5/05
摘要： PURPOSE:To improve the uniformity of a film thickness and the surface condition of the coating film and to prevent the generation of defects of the coating film by heating the coating liquid film on the surface of a cylindrical base at the temp. within the range where the solidification of the components constituting the coating liquid film and the roughening of the surface do not arise from the inside of the cylindrical base, thereby forming the coating film layer dried to finger touch. CONSTITUTION:The revolving shaft 2 of the cylindrical base 1 is held horizontal and while the cylindrical base is kept rotated at a prescribed speed around the revolving shaft 2, a coating compd. is substantially not atomized and is discharged from a coating compd. discharge gun 5 having a very small aperture 12 onto the surface of the cylindrical base 1 or the coated film layer on this surface to form the coating liquid film 14. The cylindrical base 1 is thereafter heated by a blower 15 or heater 16 from the inside thereof at the temp. of the range where the solidification of the components constituting the coating liquid film and the roughening of the surface do not arise to form the coating film layer dried to finger touch. The uniformity of the surface condition of the coating film and the film thickness is improved and the generation of the defects in the coating film is prevented.

40. 发明专利

JPH02272561A METHOD FOR DRYING COATING FILM LAYER OF ELECTROPHOTOGRAPHIC SENSITIVE BODY TO FINGER TOUCH 失效
公开(公告)号：JPH02272561A
公开(公告)日：1990-11-07
申请号：JP9310189
申请日：1989-04-14
申请人： CANON KK
发明人： HONDA MITSURU , MATSUSHIGE NAOKI , NAKAMURA KAZUNARI
IPC分类号： G03G5/05
摘要： PURPOSE:To improve the uniformity of a coating film and the coating efficiency by sealing the solvent vapor generated from a coating liquid film to the circumference of the coating liquid film during the prescribed time during and after the discharge of a coating compd. CONSTITUTION:A base body cylinder 1 is rotated in a hood 13 and while the coating liquid 4 is discharged in a stripe shapes from a nozzle tip 12 according to the movement of a gun 5, the coating liquid is applied linearly on the cylinder 1 from a slit-shaped aperture 16 provided in the generator direction of the hood 13. The leveling of the linear coating compd. remaining in waveforms progresses and the flat surfaces are successively formed in the previously coated part 14 on progression of the coating. The solvent vapor on the cylinder 1 is sealed into the hood 13 and the solvent vapor attains saturation in the space volume of the jig hood 13 so that the leveling of the applied coating compd. progresses in an air-liquid equil. state in the hood 13. The uniformity of the coated film and the coating efficiency are improved in this way.

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