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公开(公告)号：FR2561830A1
公开(公告)日：1985-09-27
申请号：FR8411106
申请日：1984-07-12
Applicant: CANON KK
Inventor： HOSONO NAGAO , NAGASE YUKIO , TAKEUCHI TATSUO , EGAMI HIDEMI , SATOMURA HIROSHI
Abstract: A device for charging or discharging a member is arranged opposite to a member 2 to be charged or discharged, and comprises an inducing electrode 4 and a discharging electrode 5 sandwiching a dielectric member 3 so that the discharging electrode faces the member to be charged, and an alternating voltage is applied between the inducting electrode 4 and the discharging electrode 5 to produce a surface discharge on a surface of the dielectric member 3 at the discharage electrode side, wherein the charge density of the surface discharge area varies in the direction of the width of the discharging electrode; by moving the member 2 to be charged or discharged relative to the discharging electrode, it can be subjected first to a low charge density portion an then to a high charge density portion. The variation of charge density can be achieved by positioning the discharging electrode 5 nearer to one edge of the inducing electrode 4, on providing several discharging electrodes at varying spacings.
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公开(公告)号：DE3422401A1
公开(公告)日：1985-09-26
申请号：DE3422401
申请日：1984-06-15
Applicant: CANON KK
Inventor： HOSONO NAGAO , NAGASE YUKIO , TAKEUCHI TATSUO , EGAMI HIDEMI , SATOMURA HIROSHI
Abstract: A method of charging or discharging a member including the steps of, opposing to a member to be acted, a discharging member having a dielectric member, an inducing electrode and a discharging electrode sandwiching the dielectric member so that the discharging electrode faces the member to be acted, applying an alternating voltage between the inducing electrode and the discharging electrode to produce a surface discharge on a surface of the dielectric member at the discharging electrode side, wherein width of an area where the surface discharge is produced is substantially equal to width of the inducing electrode, and charging or discharging the member to be acted by the thus formed surface discharge.
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公开(公告)号：DE69931456D1
公开(公告)日：2006-06-29
申请号：DE69931456
申请日：1999-10-20
Applicant: CANON KK
Inventor： NAGASE YUKIO , KOUMURA NOBORU , NARITA IZUMI , MASHIMO SEIJI
IPC: B41J2/44 , H01L51/50 , B41J2/45 , B41J2/455 , H01L27/32 , H01L51/00 , H01L51/30 , H05B33/10 , H05B33/12 , H05B33/14 , H05B33/26
Abstract: An exposure device having an array of a plurality of light emitting elements composed of at least an anode layer (2), a cathode layer (6) and one or more organic compound layers (7) interposed between the anode layer and the cathode layer all of which are formed on a substrate (1). In the exposure device, the quantity of light emitted from each light emitting element is made uniform by controlling the light emitting area of each light emitting element. Therefore, the exposure device eliminates differences in the quantity of emitted light among the plurality of light emitting elements without using a special drive circuit.
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公开(公告)号：DE69922306T2
公开(公告)日：2005-11-24
申请号：DE69922306
申请日：1999-09-03
Applicant: CANON KK
Inventor： AMAMIYA SHOJI , MARUYAMA AKIO , NAGASE YUKIO , KIKUCHI TOSHIHIRO , SUZUKI KOICHI , ISHIYAMA HARUMI
Abstract: An electrophotographic apparatus includes an electrophotographic photosensitive member; charging means for charging the electrophotographic photosensitive member including a charging member supplied with a voltage and disposed in contact with the photosensitive member so as to form a nip with the photosensitive member to charge the photosensitive member; exposure means; developing means; and transfer means. The photosensitive member includes a surface layer containing a charge-transporting material having an oxidation potential of 0.4 - 1.0 volt. Charging promoter particles are present at the nip between the photosensitive member and the charging member to injection-charge the photosensitive member. Because of the selection of the charge-transporting material and the presence of the charging promoter particles, the photosensitive member can be effectively injection-charged.
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公开(公告)号：DE69133449T2
公开(公告)日：2005-09-15
申请号：DE69133449
申请日：1991-01-16
Applicant: CANON KK
Inventor： USAMI AKIHIRO , MOCHIDA YOSHINORI , YOSHIZAWA ATSUTOMO , IKEDA YOSHINORI , KEMMOCHI KAZUHISA , NAGASE YUKIO , ARIMOTO SHINOBU , YAMADA MASANORI , SUZUKI HAJIME , KATO KATSUHITO
IPC: H04N1/52
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Patent Agency Ranking
公开(公告)号：DE69818124T2
公开(公告)日：2004-07-15
申请号：DE69818124
申请日：1998-03-04
Applicant: CANON KK
Inventor： ISHIYAMA HARUMI , NAGASE YUKIO , CHIGONO YASUNORI , HIRABAYASHI JUN
IPC: G03G15/02
Abstract: A charging apparatus includes a charging member (2), to which a voltage is applicable, for charging a member to be charged (1); the charging member (2) including: an flexible member (2b) for forming a nip (n) with the member to be charged (1), wherein the flexible member (2b) is moved with a peripheral speed difference between surfaces of the flexible member (2b) and the member to be charged (1) at the nip (n); and electroconductive particles (3) in the nip (n).
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公开(公告)号：DE69523418D1
公开(公告)日：2001-11-29
申请号：DE69523418
申请日：1995-12-06
Applicant: CANON KK
Inventor： YOSHINAGA KAZUO , SAKAI KIYOSHI , NAGASE YUKIO , HASHIMOTO YUICHI , TANAKA MAMORU
Abstract: An image forming apparatus is constituted by an electrophotographic photosensitive member including a support and a photosensitive layer disposed on the support, charging means for charging the photosensitive member, exposure means for illuminating the charged photosensitive member with a light beam, developing means, and transfer means. The exposure means illuminates the charged photosensitive member with a light beam having a spot area (S) and said photosensitive layer has a thickness (T), wherein S and T provides the product (S x T) of at most 20,000 mu m which is effective in improving a resolution and gradation reproducibility. The photosensitive member and at least one means selected from the group consisting of charging means, developing means, and cleaning means may preferably be integrally supported to form a process cartridge which is detachably mountable to an image forming apparatus main body.
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公开(公告)号：DE69132230D1
公开(公告)日：2000-07-06
申请号：DE69132230
申请日：1991-01-16
Applicant: CANON KK
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公开(公告)号：DE69514963T2
公开(公告)日：2000-06-29
申请号：DE69514963
申请日：1995-06-29
Applicant: CANON KK
Inventor： YOSHINAGA KAZUO , HASHIMOTO YUICHI , NAGASE YUKIO , KASHIZAKI YOSHIO , MIYAZAKI HAJIME , TANAKA MASATO , SAKAKIBARA TEIGO , TANAKA MAMORU
IPC: G03G15/00
Abstract: An electrophotographic system is constituted by an electrophotographic photosensitive member, charging means for charging the photosensitive member to a potential, and exposure means for illuminating the charged photosensitive member with a light beam to form an electrostatic image thereon. The electrophotographic photosensitive member has a potential-exposure energy characteristic providing an induction energy and a gamma varying depending on an electric field intensity induced by the charged potential. The electrophotographic system further includes control means for controlling the charged potential on the photosensitive member corresponding to resolution and gradation data of an original, so as to optimally reproduce the resolution and gradation, as desired, of the original.
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公开(公告)号：GB2156597A
公开(公告)日：1985-10-09
申请号：GB8415278
申请日：1984-06-15
Applicant: CANON KK
Inventor： HOSONO NAGAO , NAGASE YUKIO , TAKEUCHI TATSUO , SATOMURA HIROSHI , EGAMI HIDEMI
Abstract: A method of charging or discharging a member including the steps of, opposing to a member to be acted, a discharging member having a dielectric member, an inducing electrode and a discharging electrode sandwiching the dielectric member so that the discharging electrode faces the member to be acted, applying an alternating voltage between the inducing electrode and the discharging electrode to produce a surface discharge on a surface of the dielectric member at the discharging electrode side, wherein width of an area where the surface discharge is produced is substantially equal to width of the inducing electrode, and charging or discharging the member to be acted by the thus formed surface discharge.
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