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1. 发明专利

JP2013101167A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013101167A
公开(公告)日：2013-05-23
申请号：JP2011243435
申请日：2011-11-07
申请人： Konica Minolta Business Technologies Inc , コニカミノルタビジネステクノロジーズ株式会社
发明人： NAKANO MUNENORI , UCHIKI SHIGEKI , MITSUZAKI MASAHIRO , OBARA MITSURU
IPC分类号： G03G15/06 , G03G13/06 , G03G15/00 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To precisely determine a developing bias value that obtains a target toner concentration.SOLUTION: The image forming apparatus comprises: image pattern forming means for forming a specific image pattern on a photoreceptor 11 or a transfer material 21 under specific image forming conditions; density detecting means SE1 for optically detecting the density of the image pattern on the photoreceptor 11 or the transfer material 21; ambient condition detecting means SE2 for detecting ambient conditions; cumulative driving time detecting means for detecting the cumulative driving time of the photoreceptor 11; and control means 50 for determining a developing bias value for obtaining a target toner concentration on the basis of the density of the image pattern detected by the density detecting means SE1. On the basis of the ambient conditions detected by the ambient condition detecting means SE2 and the cumulative driving time detected by the cumulative driving time detecting means, the control means calculates a developing startup point for the developing bias value, at which toner starts to stick to the surface of the photoreceptor 11. Having the developing startup point as a reference, the control means determines the developing bias value for obtaining the target toner concentration, from the density of the image pattern detected by the density detecting means SE1.
摘要翻译：要解决的问题：精确地确定获得目标调色剂浓度的显影偏压值。图像形成装置包括：用于在特定图像形成条件下在感光体11或转印材料21上形成特定图像图案的图像图案形成装置; 密度检测装置SE1，用于光学检测感光体11或转印材料21上的图像图案的密度; 环境条件检测装置SE2，用于检测环境条件; 累积驱动时间检测装置，用于检测感光体11的累积行驶时间; 以及控制装置50，用于基于由浓度检测装置SE1检测到的图像图案的浓度来确定用于获得目标调色剂浓度的显影偏压值。基于由环境条件检测装置SE2检测到的环境条件和由累积行驶时间检测装置检测到的累积行驶时间，控制装置计算显影偏压值的显影起始点，在该显影偏压值，调色剂开始粘附感光体11的表面。以显影起点作为基准，控制装置根据由浓度检测装置SE1检测的图像图案的浓度确定用于获得目标调色剂浓度的显影偏压值。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP4091538B2 Electrostatic latent image carrier, a developer, a developer container, an image forming method and a process cartridge 有权
公开(公告)号：JP4091538B2
公开(公告)日：2008-05-28
申请号：JP2003434900
申请日：2003-12-26
申请人：株式会社リコー
发明人：昌秀山下 , 富美雄近藤 , 浩介鈴木
IPC分类号： G03G9/08 , G03G9/107 , G03G9/113 , G03G13/06
CPC分类号： G03G9/107 , G03G2215/0607
摘要： A carrier for electrostatic development contains a core particle and a coating layer covering the core particle, and the core particle is a ferrite particle containing at least one of Zr in an amount of 0.005% by mass to 5% by mass and Bi in an amount of 0.001% by mass to 1% by mass. The carrier shows a sufficient resistance, is stably charged over a long period of time, can avoid roughness and irregular density in halftone images, prevents deposition of the carrier particles on a photoconductor, can satisfactorily reproduce character images and can produce high-quality images over a long period of time. The carrier is usable for constituting a developer, a container housing the developer, an image forming apparatus and process, and process cartridge using the developer.

3. 发明专利

JP4082153B2 Image forming method and image forming apparatus 有权
公开(公告)号：JP4082153B2
公开(公告)日：2008-04-30
申请号：JP2002283065
申请日：2002-09-27
申请人：コニカミノルタホールディングス株式会社
发明人：明彦伊丹
IPC分类号： G03G5/06 , G03G15/08 , G03G9/08 , G03G13/06 , G03G13/08 , G03G15/04
CPC分类号： G03G5/0659 , G03G5/0657 , G03G5/0679 , G03G5/0683 , G03G5/0696 , G03G13/08

4. 发明专利

JP3363505B2 Developing method 失效
公开(公告)号：JP3363505B2
公开(公告)日：2003-01-08
申请号：JP4273493
申请日：1993-03-03
申请人：キヤノン株式会社
发明人：勝弘境澤
IPC分类号： G03G13/06 , G03G15/06 , G03G15/08

5. 发明专利

JP3230044B2 失效
公开(公告)号：JP3230044B2
公开(公告)日：2001-11-19
申请号：JP13755795
申请日：1995-05-12
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097 , G03G13/06 , G03G15/08

6. 发明专利

JP2870781B2 失效
公开(公告)号：JP2870781B2
公开(公告)日：1999-03-17
申请号：JP2592189
申请日：1989-02-06
申请人： SONII KK
发明人： WATANABE HARUO , YASUDA AKIO , KAWAKADO KOICHI , TSUCHA TAKAHISA , SUZUKI SEISUKE
IPC分类号： G03G5/00 , G03G9/125 , G03G13/06 , G03G13/22 , G03G15/00 , G03G15/05 , G03G15/08 , G03G15/22

7. 发明专利

JP2862544B2 失效
公开(公告)号：JP2862544B2
公开(公告)日：1999-03-03
申请号：JP24685788
申请日：1988-09-30
申请人： TOSHIBA KK , TOKYO ELECTRIC CO LTD
发明人： HOSOYA MASAHIRO , SATO SHUITSU , SAITO MITSUNAGA , UEHARA TSUTOMU , ENDO MITSUHARU , FUTAMATA YUKIO
IPC分类号： G03G15/06 , G03G13/06 , G03G15/08

8. 发明专利

JPH10333359A TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE AND IMAGE FORMING METHOD 失效
公开(公告)号：JPH10333359A
公开(公告)日：1998-12-18
申请号：JP5972298
申请日：1998-03-11
申请人： CANON KK
发明人： MORIKI YUJI , NAKAMURA TATSUYA , FUJITA RYOICHI
IPC分类号： G03G15/02 , G03G5/00 , G03G9/08 , G03G9/087 , G03G9/09 , G03G13/06 , G03G13/16 , G03G15/01 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To obtain a toner for developing an electrostatic charge image less liable to cause filming on a photoreceptor and to contaminate the surface of a toner support such as a sleeve or a carrier without deteriorating low-temp. fixability and excellent in anti-offsetting property and durability. SOLUTION: This toner contains at least a bonding resin, a colorant and a releasing agent. The THF-soluble component of the toner has at least one peak in the mol.wt. range of 1,000 to =800, integrated mol.wt. (L) in the mol.wt. range of 2,000-5,000 and integrated mol.wt. (H) in a mol.wt. range of >=300,000 satisfy the relations of 1

9. 发明专利

JP2674105B2 失效
公开(公告)号：JP2674105B2
公开(公告)日：1997-11-12
申请号：JP15684888
申请日：1988-06-27
IPC分类号： G03G9/087 , G03G9/09 , G03G9/097 , G03G9/12 , G03G9/125 , G03G9/13 , G03G13/01 , G03G13/06 , G03G13/22 , G03G15/06

10. 发明专利

JPH07140778A IMAGE DENSITY MAINTAINING METHOD IN IMAGE FORMING DEVICE 失效
公开(公告)号：JPH07140778A
公开(公告)日：1995-06-02
申请号：JP31415393
申请日：1993-11-20
申请人： MITA INDUSTRIAL CO LTD
发明人： ITO KOYO , OKAUCHI YOSHIFUMI , YOSHIMOTO MITSUHARU , MORITA TAKAKAZU , YAMAMOTO SHINJI
IPC分类号： G03G15/00 , G03G13/06 , G03G15/08 , G03G21/10
摘要： PURPOSE:To provide an image density maintaining method in an image forming device, which suppresses an increase in an amount of the electrification of developer in a two-component developing device and easily prevents a decrease in image density. CONSTITUTION:When the number of copies reaches a prescribed number, a bias is applied to the developing sleeve 10 of the two-component developing device, thereby electrifying it to the opposite polarity to that of toner, and, in this condition, the toner (a) in the developing device 3 is shifted onto a drum 1. The toner shifted to the surface of the drum is recovered by being scraped by a cleaner 5. After toner concentration decreases below a prescribed value, the developing device 3 is replenished with fresh toner.

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