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21. 发明专利

JPH0764306A PRODUCTION OF PHOTOSENSITIVE DRUM 失效
公开(公告)号：JPH0764306A
公开(公告)日：1995-03-10
申请号：JP21649593
申请日：1993-08-31
申请人： KONISHIROKU PHOTO IND
发明人： OHIRA AKIRA , KOBAYASHI NOBUAKI , TAMAKI KIYOSHI , SEKI HIROHIKO
IPC分类号： G03G5/05
摘要： PURPOSE:To provide a process for production of the photosensitive drum which uniformly applies photosensitive liquid by preventing the reduction in the film thickness of a photosensitive material generated at one end of cylindrical drums, improves the level of the photosensitive films by forming uniform photosensitive body films and controlling the evaporation rate of a solvent and reducing the circumferential end face angles of these drums. CONSTITUTION:This process for production of the photosensitive drum has a stage for continuously applying the photosensitive material on the surfaces of the cylindrical drums 1A, 1B while perpendicularly moving the photosensitive material from the upper part to the lower part of the cylindrical drums 1A, 1B. The liquid pools at the bottom ends of the cylindrical drums 1A, 1B generated by the downflow of the coating liquid films of the previously coated cylindrical drums 1A, 1B while moving perpendicularly upward come into contact with the bottom ends of the cylindrical drums 1A, 1B and flow down and shift to the thin-film parts at the top ends of the succeeding cylindrical drums 1A, 1B; thereafter, the precedently coated cylindrical drums 1A, 1B are disconnected from the ends of the succeedingly coated cylindrical drums 1A, 1B.

22. 发明专利

JPH06308748A METHOD FOR SEPARATING AND RECOVERING CONSECUTIVELY COATED PHOTOSENSITIVE DRUM AFTER BEING DRIED 失效
公开(公告)号：JPH06308748A
公开(公告)日：1994-11-04
申请号：JP9956293
申请日：1993-04-26
申请人： KONISHIROKU PHOTO IND
发明人： SEKI HIROHIKO , KOBAYASHI NOBUAKI , TSUJI DAISAKU , OHIRA AKIRA , KON MAKOTO
IPC分类号： B05D3/00 , B05D3/02 , B05D7/00 , G03G5/00 , G03G5/05
摘要： PURPOSE:To provide a method for separating and recovering a photosensitive drum with high quality at high yield on which stable separation action is performed without causing vibration and positional deviation on a photosensitive agent coating film in a method for producing the photosensitive drum for electro photography by means of consecutive coating, drying and separating. CONSTITUTION:As to the method for producing the photosensitive receptor for the electrophotography, in which a base body drum consecutively superposed and lined up is consecutively coated with a photosensitive layer film, is dried, separated and recovered; the method for separating and recovering the consecutively coated photosensitive drum after being dried is characterized by separating and recovering the base drum 2A to be separated while holding the base drum 2B which has been also coated and dried and which is adjacent to the drum 2A to be separated which has been coated and dried. The method has centering function by means of air support as the holding means of the base body drum, and the method in which a center P for chuck rotation on the base body drum is decentered from the center of the drum is adopted as a separating means.

23. 发明专利

JPH04153679A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH04153679A
公开(公告)日：1992-05-27
申请号：JP27866490
申请日：1990-10-17
申请人： KONISHIROKU PHOTO IND
发明人： TAKAHASHI SATOSHI , YAMAZAKI TOSHIKI , NAKANISHI TATSUO , KOBAYASHI NOBUAKI
IPC分类号： G03G15/09 , G03G15/06
摘要： PURPOSE:To obtain a high density and high resolution image formation and to be the high performance and the little fatigue deterioration by selecting the optimum ranges of an average surface charge density, a DC development electric field, etc., of a toner and a photosensitive body having a mutually close relation. CONSTITUTION:The surface area mean particle size of fine particles of magnetic toner is 2-10mum, a magnetic susceptibility in a magnetic field at 1,000 oersted magnetic field strength is 10-40emu/g, the absolute value of an average surface charge density of the developer in which the magnetic toner is a major component is 10.1-4.8InC/cm , the absolute value of an average surface charge density of the unexposed part in a development region of the photosensitive body is 125-125InC/cm , the DC development electric field is 11X10 -10 IV/cm at an absolute value, the amplitude of the AC bias is 0.5X4.0KV (p-p), and the frequency wave number is 0.1-10KHz. Hence in spite of the particle size of the developer, the material quality, the material quality of the photosensitive body, and the structure of the developing advice, etc., the control of the image quality can be carried out easily, and the high quality image is obtained in stability at many number of times of the repeating image formulations.

24. 发明专利

JPH03288864A METHOD FOR IMAGE FORMING 失效
公开(公告)号：JPH03288864A
公开(公告)日：1991-12-19
申请号：JP9122790
申请日：1990-04-05
申请人： KONISHIROKU PHOTO IND
发明人： YAMAZAKI TOSHIKI , TAKAHASHI SATOSHI , NAKANISHI TATSUO , KOBAYASHI NOBUAKI
IPC分类号： G03G9/087 , G03G5/04 , G03G9/08 , G03G9/10 , G03G15/00 , G03G15/02 , G03G15/06 , G03G15/08 , G03G15/09
摘要： PURPOSE:To form an image of high quality having excellent image resolution and density by applying developer of two components containing particulate toner to an organic photoconductive photosensitive body such as OPC and forming an image with the aid of giving a specified condition to image forming conditions. CONSTITUTION:An original 2 on an original platen 1 is scanned in the direction shown by an arrow with the aid of a light source 3 (3a and 3b). With the scanning light thereof, the OPC photosensitive drum 10 where uniform electrostatic charge is previous ly given by an electrostatic charger 6 so as to make the surface average electric charge density thereof 25-125nC/cm is irradiated through mirror groups 4a - 4d, a lens 5 or the like. Then, the image is exposed and an electrostatic latent image is formed. The electrostatic latent image is normally developed by a magnetic brush method with the aid of a developing device 7 housing the developer of the two components consisting of magnetic carrier and non-magnetic particulate toner having the surface area whose average grain size is 2-8mum and the average surface electric charge density whose absolute value is (3-7)X10 C/cm . Then, a toner image is formed on the drum 10. Thus, the image of the high quality having the excellent resolution and the image density is formed.

25. 发明专利

JPH03173772A METHOD AND APPARATUS FOR PRODUCING AMORPHOUS SILICON PHOTORECEPTOR 失效
公开(公告)号：JPH03173772A
公开(公告)日：1991-07-29
申请号：JP31152789
申请日：1989-11-30
申请人： KONISHIROKU PHOTO IND
发明人： KOBAYASHI NOBUAKI , TAKAHASHI SATOSHI , NAKANISHI TATSUO , YAMAZAKI TOSHIKI
IPC分类号： G03G5/08 , C23C16/24
摘要： PURPOSE:To obtain a photoreceptor having satisfactory electro-photographic characteristics with high controllability by keeping the amplitude of AC in a power supplying electrode within a specified range when an amorphous silicon film is formed by plasma CVD. CONSTITUTION:A drum-shaped Al substrate 3 is vertically and rotatably set in the vacuum chamber of a glow discharge decomposition apparatus, the chamber is evacuated while regulating the pressure of the gas in the chamber and the substrate 3 is heated with a mandrel heater 4. Gaseous starting materials are introduced into a mixing chamber and jetted from the nozzles in a cylindrical high frequency electrode 1 set around the substrate 3 and glow discharge is caused between the electrode 1 and the substrate 3 with an Rf power source. The gaseous starting materials are decomposed by the glow discharge between the electrode 1 and the substrate 3 to continuously deposit amorphous silicon on the substrate 3. During this time, the amplitude VP-P of AC in the electrode 1 is kept within the range of 10-70 with a monitor, a controller and an automatic pressure controller APC.

26. 发明专利

JPH03157659A MANUFACTURE OF PHOTOSENSITIVE BODY 失效
公开(公告)号：JPH03157659A
公开(公告)日：1991-07-05
申请号：JP29817289
申请日：1989-11-16
申请人： KONISHIROKU PHOTO IND
发明人： NAKANISHI TATSUO , KOBAYASHI NOBUAKI , TAKAHASHI SATOSHI , YAMAZAKI TOSHIKI
IPC分类号： G03G5/00 , G03G5/08
摘要： PURPOSE:To effectively prevent growth of an abnormal film of a photosensitive layer and to improve film quality by exposing a substrate to chlorine trifluoride and then forming the photosensitive layer on this substrate. CONSTITUTION:A prescribed mixture of ClF3 and an inert gas is introduced into a vacuum chamber 52 from supply sources 65 and 66 before forming each layer in manufacturing the photosensitive body by glow discharge and released out of outlets 53 on the substrate 41, resulting in removing silicon type compounds firmly fixed to the surface of the substrate 41 by the etching action of the ClF3, exhausting them as a gas from the chamber 52, decomposing them even in low concentration and at low temperature, and cleaning the surface of the substrate 41. Then, the inside of the chamber 52 is purged by gaseous Ar and each film is formed by the glow discharge, thus permitting the abnormal film growth to the photosensitive layer to be effectively prevented and amor phous silicon type films small in defects to be formed.

27. 发明专利

JP2003255567A IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR 审中-公开
公开(公告)号：JP2003255567A
公开(公告)日：2003-09-10
申请号：JP2002053353
申请日：2002-02-28
申请人： KONISHIROKU PHOTO IND
发明人： KOBAYASHI NOBUAKI , ASANO MASANARI , YAMAZAKI HIROSHI
IPC分类号： G03G9/08 , G03G5/00 , G03G5/043 , G03G9/087 , G03G15/00 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide an image forming method, an image forming apparatus, a process cartridge and an electrophotographic photoreceptor realizing good image quality, preventing peeling at the end of the coating layer of a photoreceptor, toner filming, the occurrence of a black spot or the like, and faulty cleaning, and realizing excellent durability. SOLUTION: Assuming that the average value of the film thickness of the coating layer at the center part in the image forming width direction of the electrophotographic photoreceptor is P (μm), the average of the maximum value of the film thickness out of an image forming area is Pmax (μm), and the average value of a distance from a point showing the maximum value to the end of the coating layer is D (μm), they satisfy following expressions (1) and (2); and toner whose number average particle size is 4 to 9 μm and in which toner components whose number reference particle size is COPYRIGHT: (C)2003,JPO

28. 发明专利

JP2003207908A ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ITS MANUFACTURING METHOD 审中-公开
公开(公告)号：JP2003207908A
公开(公告)日：2003-07-25
申请号：JP2002005886
申请日：2002-01-15
申请人： KONISHIROKU PHOTO IND
发明人： KOBAYASHI NOBUAKI
IPC分类号： G03G5/04 , G03G5/00
摘要： PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor constituted to prevent the ends of a coating layer on a photoreceptor drum from being peeled starting from the end of a coating layer in the case of removing the coating layer at both ends of the drum, and made free from toner accumulation and a defect such as a black spot caused by the scattering of the powder of the coating layer and toner, and its manufacturing method. SOLUTION: The electrophotographic photoreceptor is provided with the coating layer including at least a photoreceptive layer on cylindrical conductive base substance. When the average of the film thickness of the coating layer at a center part in the image forming width direction of the conductive base substance is defined as P (μm), the average of the maximum value of the film thickness outside an image forming area is defined as Pmax (μm), and the average of a distance from a point where the maximum value is formed to the end of the coating layer is defined as D (μm), the photoreceptor satisfies both following expressions (1) and (2). (1) 0 COPYRIGHT: (C)2003,JPO

29. 发明专利

JP2003098698A METHOD FOR DIP COATING OF ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR 审中-公开
公开(公告)号：JP2003098698A
公开(公告)日：2003-04-04
申请号：JP2001293646
申请日：2001-09-26
申请人： KONISHIROKU PHOTO IND
发明人： KOBAYASHI NOBUAKI , ASANO MASANARI
IPC分类号： G03G5/05
摘要： PROBLEM TO BE SOLVED: To provide a method for dip coating of a photographic photoreceptor capable of yielding a satisfactory coated film layer by limiting the specific gravity of a solvent used for a coating liquid, dipping an object to be coated in the coating liquid up to the upper end of the object, temporarily keeping the object in that state, eliminating a portion of air inside the object to be coated and subsequently pulling up the object. SOLUTION: In this method for applying a dip coating to an electrophotographic photoreceptor for dipping the object to be coated in the coating liquid and forming a coating film layer on the object to be coated, the specific gravity used for the coating liquid ranges between 0.780 and 1.200. The object to be coated is dipped in the coating liquid with air inside the object to be coated confined while the opening part of the object to be coated is turned down. When the object to be coated is dipped up to its highest end, the object is temporarily kept in that state, the air inside the object is also partially eliminated, and the object is subsequently pulled up to form a coating film layer.

30. 发明专利

JPH05297605A 失效
公开(公告)号：JPH05297605A
公开(公告)日：1993-11-12
申请号：JP9671092
申请日：1992-04-16
申请人： KONISHIROKU PHOTO IND
发明人： KOBAYASHI NOBUAKI , NAKANO NAKAYA
IPC分类号： G03G5/00 , G03G5/05
摘要： PURPOSE:To enable the mass supply of photosensitive drums having a specified film thickness profile by stabilizing a coating state and eliminating the liquid starvation at the time of coating. CONSTITUTION:Members 6 for correcting the level differences of stacking are pressed to the respective inner sides of the cylindrical base bodies 4 stacked on each other in the method for perpendicularly stacking the end sections of the cylindrical base bodies 4 in contact with each other and continuously coating these base bodies by a coating device using a slide hopper type coating head which encloses the outer circumferences of the cylindrical surfaces of the cylindrical base bodies 4 and annularly supplies a coating material for photosensitive bodies.

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