发明授权
- 专利标题: Toner, developer, and image forming apparatus
- 专利标题(中): 调色剂,显影剂和成像装置
-
申请号: US13609627申请日: 2012-09-11
-
公开(公告)号: US08685604B2公开(公告)日: 2014-04-01
- 发明人: Yoshihiro Moriya , Masahide Yamada , Taichi Nemoto , Yukiko Nakajima , Yoshitaka Yamauchi , Daiki Yamashita , Keiji Makabe , Akiyoshi Sabu , Suzuka Amemori
- 申请人: Yoshihiro Moriya , Masahide Yamada , Taichi Nemoto , Yukiko Nakajima , Yoshitaka Yamauchi , Daiki Yamashita , Keiji Makabe , Akiyoshi Sabu , Suzuka Amemori
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-199274 20110913; JP2011-257091 20111125; JP2012-137750 20120619
- 主分类号: G03G9/087
- IPC分类号: G03G9/087 ; G03G9/08
摘要:
A toner including a colorant and a first binder resin is provided. The first binder resin has first and second glass transition points at a temperature Tg1 of −20 to 20° C. and a temperature Tg2 of 35 to 65° C., respectively, measured by a differential scanning calorimeter at a heating rate of 5° C./min. A ratio h1/h2 of a baseline displacement h1 observed in the first glass transition point to a baseline displacement h2 observed in the second glass transition point is less than 1.0. The first binder resin has a structure in which a first phase is dispersed in a second phase. The first and second phases consist of portions having larger and smaller phase difference values, respectively, than an intermediate value between maximum and minimum phase difference values in a binarized phase image obtained by an atomic force microscope with a tapping mode method.
公开/授权文献
- US20130065172A1 TONER, DEVELOPER, AND IMAGE FORMING APPARATUS 公开/授权日:2013-03-14
信息查询