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公开(公告)号：DE69624622D1
公开(公告)日：2002-12-12
申请号：DE69624622
申请日：1996-05-31
Applicant: SHARP KK
Inventor： ISHIDA TOSHIHISA , SUMIDA KATSUAKI , OKAMOTO KANSHIRO , MASUDA JITSUO , ASANUMA MASATO , INOUE KATSUSHI , INO TOSHIAKI , SAIKO HIDEJI , KITABATAKE YASUO
Abstract: An image forming apparatus has a developer container, a development device for developing a latent image formed on a surface of a photoreceptor drum by supplying toner to the latent image, and an agitation roller for supplying toner to the development device and agitating the toner in the developer container. The development device and the agitation roller are installed in the developer container. Moreover, the image forming apparatus includes a flying toner detecting device for detecting an amount of toner flying from the development device, and a control unit for controlling the toner agitating operation of the agitation roller in response to a result of a detection performed by the flying toner detecting device. This structure prevents the toner from flying from the development device.
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公开(公告)号：DE60032700T2
公开(公告)日：2007-11-08
申请号：DE60032700
申请日：2000-10-05
Applicant: SHARP KK
Inventor： SHINKAWA KOUJI , SAKAI TAKASHI , YAMANAKA TAKAYUKI , INOUE ATSUSHI , MASUDA JITSUO
IPC: G03G21/10
Abstract: In image forming apparatuses producing recycled toner from residual toner and recycling the recycled toner, the toner composition changes, and the toner properties worsen, because the external additive contained in the collected residual toner that is collected with a cleaning portion (6) decreases during the image formation. The residual toner that has been collected with the cleaning portion (6) is conveyed through a conveyance path (51) to a collected residual toner storage (62), and external additive is supplemented from an external additive cartridge (64), and mixed with being stirred to produce recycled toner. In a fresh toner storage (63), fresh toner end recycled toner are stirred, and when the amount of toner in a developing portion (4) drops below a predetermined amount, toner is conveyed from the fresh toner storage (63) through a conveyance path (68) to the developing portion (4). The toner that has been conveyed to the developing portion (4) is supplied to a photosensitive drum (1).
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公开(公告)号：DE69631494D1
公开(公告)日：2004-03-11
申请号：DE69631494
申请日：1996-03-27
Applicant: SHARP KK
Inventor： ASANUMA MASATO , OKAMOTO KANSHIRO , ISHIDA TOSHIHISA , ITOYAMA MOTOYUKI , TOKUYAMA MITSURU , TAKESUE YUICHIRO , INO TOSHIAKI , SAIKO HIDEJI , SUMIDA KATSUAKI , NAOI HIROO , HATANAKA EISAKU , MASUDA JITSUO , NARIMATSU MASAYASU , KITABATAKE YASUO
Abstract: The image forming apparatus of the invention controls the toner density by any one of the following configurations: by prohibiting toner supply for a constant duration to prevent excessive toner supply if time from the end of the last operation of the developing unit to the start of a next operation, inclusive of the power-activation is equal to or longer than a predetermined period when the developing unit is activated to commence agitation of the developer; by correcting the toner density of the developer in association with the agitation total; by controlling a process parameter so that the density of a toner patch formed on the photoreceptor corresponds to a prescribed density value and determining that developing performance of the developer is improved and canceling the toner density correction when the process parameter reaches the prescribed value; or by changing the toner density reference value when the variation as to the charger output is equal to or greater than a first predetermined value and maintaining the changed toner density reference value until the variation of the charger output again becomes equal to or greater than the first predetermined value.
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公开(公告)号：DE60029552D1
公开(公告)日：2006-09-07
申请号：DE60029552
申请日：2000-12-28
Applicant: SHARP KK
Inventor： YAMANAKA TAKAYUKI , INOUE ATSUSHI , KIDO EIICHI , KOBAYASHI MIKIE , WAKADA SHIGEYUKI , MASUDA JITSUO , OHGOSHI TOSHIHIDE , TATSUMI HIROSHI , SAKAI MASAHIRO
Abstract: A cleaning element is arranged on the backside of the toner layer metering blade, i.e., the side opposite to the surface in contact with the developer support, in order to prevent the cleaning element from damaging the blade surface and the abutment surface of the metering blade against the developer support. This cleaning element is frictionally moved across the backside of the toner layer metering blade to remove stuck toner from the toner layer metering blade or prevent occurrence of buildups.
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公开(公告)号：DE60203354D1
公开(公告)日：2005-04-28
申请号：DE60203354
申请日：2002-09-17
Applicant: SHARP KK
Inventor： MASUDA JITSUO , NARIMATSU MASAYASU , KAWAMOTO HIROSHI , YOSHIDA HIROAKI , SAKAI MASAHIRO , FUKUDO NAOKI , TAKESUE YUICHIRO
Abstract: An object of the invention is to make an exact judgment on suitability of a replaceable component such as a toner supplying container with use of an existing mechanism of an image forming apparatus, without additionally providing a data storage component designed for a consumable product which is detachably attached to the apparatus, or a data reading component to be placed in the image forming apparatus main body. In an incorporated control section (43), a specific part of a replaceable component (41), which is placed on an original platform (10) prior to being loaded into the apparatus, is optically scanned to read image information, and, based on the reading result, whether or not the replaceable component (41) is suitable for the image forming apparatus is judged.
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Patent Agency Ranking
公开(公告)号：DE69616403D1
公开(公告)日：2001-12-06
申请号：DE69616403
申请日：1996-03-27
Applicant: SHARP KK
Inventor： ASANUMA MASATO , INO TOSHIAKI , OKAMOTO KANSHIRO , SAIKO HIDEJI , ISHIDA TOSHIHISA , SUMIDA KATSUAKI , ITOYAMA MOTOYUKI , NAOI HIROO , TOKUYAMA MITSURU , HATANAKA EISAKU , TAKESUE YUICHIRO , MASUDA JITSUO , NARIMATSU MASAYASU , KITABATAKE YASUO
Abstract: The image forming apparatus of the invention controls the toner density by any one of the following configurations: by prohibiting toner supply for a constant duration to prevent excessive toner supply if time from the end of the last operation of the developing unit to the start of a next operation, inclusive of the power-activation is equal to or longer than a predetermined period when the developing unit is activated to commence agitation of the developer; by correcting the toner density of the developer in association with the agitation total; by controlling a process parameter so that the density of a toner patch formed on the photoreceptor corresponds to a prescribed density value and determining that developing performance of the developer is improved and canceling the toner density correction when the process parameter reaches the prescribed value; or by changing the toner density reference value when the variation as to the charger output is equal to or greater than a first predetermined value and maintaining the changed toner density reference value until the variation of the charger output again becomes equal to or greater than the first predetermined value.
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公开(公告)号：DE69318221T2
公开(公告)日：1998-12-17
申请号：DE69318221
申请日：1993-07-13
Applicant: SHARP KK , FUJI ELECTRIC CO LTD
Inventor： NOGUCHI TERUHIKO , KINASH HIROSHI , MASUDA JITSUO , INOUE KATSUSHI , TANAKA TATSUO , OTSUKI KUNIO , ADACHI KAZUYA
Abstract: A marking area whose optical reflection property differs from that of a non-marking area is formed in a portion of a surface of an electrically conductive substrate. Assuming that the average line of a vertical section of the non-marking area cut across the border line with the marking area is M0 and the average line of a vertical section of the marking area cut across the border line is N0 and that straight lines touching the average lines M0 and N0 at the intersection of M0 and N0 are tangent lines M1 and N1, respectively, the acute angle theta between M1 and N1 is within the range of 0 DEG
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公开(公告)号：DE60032700D1
公开(公告)日：2007-02-15
申请号：DE60032700
申请日：2000-10-05
Applicant: SHARP KK
Inventor： SHINKAWA KOUJI , SAKAI TAKASHI , YAMANAKA TAKAYUKI , INOUE ATSUSHI , MASUDA JITSUO
IPC: G03G21/10
Abstract: In image forming apparatuses producing recycled toner from residual toner and recycling the recycled toner, the toner composition changes, and the toner properties worsen, because the external additive contained in the collected residual toner that is collected with a cleaning portion (6) decreases during the image formation. The residual toner that has been collected with the cleaning portion (6) is conveyed through a conveyance path (51) to a collected residual toner storage (62), and external additive is supplemented from an external additive cartridge (64), and mixed with being stirred to produce recycled toner. In a fresh toner storage (63), fresh toner end recycled toner are stirred, and when the amount of toner in a developing portion (4) drops below a predetermined amount, toner is conveyed from the fresh toner storage (63) through a conveyance path (68) to the developing portion (4). The toner that has been conveyed to the developing portion (4) is supplied to a photosensitive drum (1).
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公开(公告)号：DE60203354T2
公开(公告)日：2006-02-02
申请号：DE60203354
申请日：2002-09-17
Applicant: SHARP KK
Inventor： MASUDA JITSUO , NARIMATSU MASAYASU , KAWAMOTO HIROSHI , YOSHIDA HIROAKI , SAKAI MASAHIRO , FUKUDO NAOKI , TAKESUE YUICHIRO
Abstract: An object of the invention is to make an exact judgment on suitability of a replaceable component such as a toner supplying container with use of an existing mechanism of an image forming apparatus, without additionally providing a data storage component designed for a consumable product which is detachably attached to the apparatus, or a data reading component to be placed in the image forming apparatus main body. In an incorporated control section (43), a specific part of a replaceable component (41), which is placed on an original platform (10) prior to being loaded into the apparatus, is optically scanned to read image information, and, based on the reading result, whether or not the replaceable component (41) is suitable for the image forming apparatus is judged.
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公开(公告)号：DE69616403T2
公开(公告)日：2002-06-13
申请号：DE69616403
申请日：1996-03-27
Applicant: SHARP KK
Inventor： ASANUMA MASATO , INO TOSHIAKI , OKAMOTO KANSHIRO , SAIKO HIDEJI , ISHIDA TOSHIHISA , SUMIDA KATSUAKI , ITOYAMA MOTOYUKI , NAOI HIROO , TOKUYAMA MITSURU , HATANAKA EISAKU , TAKESUE YUICHIRO , MASUDA JITSUO , NARIMATSU MASAYASU , KITABATAKE YASUO
Abstract: The image forming apparatus of the invention controls the toner density by any one of the following configurations: by prohibiting toner supply for a constant duration to prevent excessive toner supply if time from the end of the last operation of the developing unit to the start of a next operation, inclusive of the power-activation is equal to or longer than a predetermined period when the developing unit is activated to commence agitation of the developer; by correcting the toner density of the developer in association with the agitation total; by controlling a process parameter so that the density of a toner patch formed on the photoreceptor corresponds to a prescribed density value and determining that developing performance of the developer is improved and canceling the toner density correction when the process parameter reaches the prescribed value; or by changing the toner density reference value when the variation as to the charger output is equal to or greater than a first predetermined value and maintaining the changed toner density reference value until the variation of the charger output again becomes equal to or greater than the first predetermined value.
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