Invention Grant
- Patent Title: Toner and developer
- Patent Title (中): 墨粉和开发商
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Application No.: US13684883Application Date: 2012-11-26
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Publication No.: US08795940B2Publication Date: 2014-08-05
- Inventor: Tsuyoshi Sugimoto , Hiroshi Yamashita , Daisuke Asahina , Rintaro Takahashi , Masahide Yamada , Shinya Nakayama , Atsushi Yamamoto , Shingo Sakashita
- Applicant: Tsuyoshi Sugimoto , Hiroshi Yamashita , Daisuke Asahina , Rintaro Takahashi , Masahide Yamada , Shinya Nakayama , Atsushi Yamamoto , Shingo Sakashita
- 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: JP2011-274074 20111215; JP2012-211947 20120926
- Main IPC: G03G9/08
- IPC: G03G9/08
Abstract:
To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st-Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof.
Public/Granted literature
- US20130157184A1 TONER AND DEVELOPER Public/Granted day:2013-06-20
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