Invention Grant
US08741521B2 Toner, developer, image forming method and image forming apparatus
有权
调色剂,显影剂,成像方法和图像形成装置
- Patent Title: Toner, developer, image forming method and image forming apparatus
- Patent Title (中): 调色剂,显影剂,成像方法和图像形成装置
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Application No.: US13232518Application Date: 2011-09-14
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Publication No.: US08741521B2Publication Date: 2014-06-03
- Inventor: Mamoru Hozumi , Tsuyoshi Sugimoto , Naohiro Watanabe , Tomoyuki Satoh , Shinya Hanatani , Osamu Uchinokura , Kiwako Hirohara
- Applicant: Mamoru Hozumi , Tsuyoshi Sugimoto , Naohiro Watanabe , Tomoyuki Satoh , Shinya Hanatani , Osamu Uchinokura , Kiwako Hirohara
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-206472 20100915
- Main IPC: G03G9/087
- IPC: G03G9/087

Abstract:
A toner containing toner particles, each toner particle containing: a releasing agent; a colorant; and a binder resin containing at least a crystalline polyester resin and a non-crystalline polyester resin, wherein in the case where a volume average particle diameter of the toner is defined as Dv, the toner contains a group of the toner particles having 4/5 Dv, and a group of the toner particles having 6/5 Dv, and wherein an endothermic value A of the crystalline polyester resin at a first temperature increase in DSC of the toner, an endothermic value B of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particle having 4/5 Dv, and an endothermic value C of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particles having 6/5 Dv satisfy the relation represented by the following formulas: 50
Public/Granted literature
- US20120064447A1 TONER, DEVELOPER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS Public/Granted day:2012-03-15
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