发明授权
US09304420B2 Two-component developer, developing device, image forming apparatus, and image forming method
有权
双组分显影剂,显影装置,成像装置和图像形成方法
- 专利标题: Two-component developer, developing device, image forming apparatus, and image forming method
- 专利标题(中): 双组分显影剂,显影装置,成像装置和图像形成方法
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申请号: US12835106申请日: 2010-07-13
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公开(公告)号: US09304420B2公开(公告)日: 2016-04-05
- 发明人: Nobuyuki Yoshioka , Takanori Kamoto , Osamu Wada , Tadashi Iwamatsu
- 申请人: Nobuyuki Yoshioka , Takanori Kamoto , Osamu Wada , Tadashi Iwamatsu
- 申请人地址: JP Osaka
- 专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人地址: JP Osaka
- 代理机构: Nixon & Vanderhye P.C.
- 优先权: JPP2009-165170 20090713
- 主分类号: G03G9/107
- IPC分类号: G03G9/107 ; G03G9/08 ; G03G9/087 ; G03G9/113
摘要:
A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y≦−1.54x+5.93 (1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.