发明授权
- 专利标题: Toner, development agent, image forming apparatus, and process cartridge
- 专利标题(中): 调色剂,显影剂,成像设备和处理盒
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申请号: US13958745申请日: 2013-08-05
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公开(公告)号: US09176406B2公开(公告)日: 2015-11-03
- 发明人: Satoyuki Sekiguchi , Hiroshi Yamashita , Minoru Masuda , Susumu Chiba , Tatsuya Morita , Atsushi Yamamoto , Shinya Nakayama , Masahide Yamada , Kohsuke Nagata , Keiji Makabe , Toyoshi Sawada
- 申请人: Satoyuki Sekiguchi , Hiroshi Yamashita , Minoru Masuda , Susumu Chiba , Tatsuya Morita , Atsushi Yamamoto , Shinya Nakayama , Masahide Yamada , Kohsuke Nagata , Keiji Makabe , Toyoshi Sawada
- 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, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2012-181118 20120817; JP2012-194240 20120904; JP2012-202977 20120914; JP2012-241774 20121101; JP2013-046796 20130308
- 主分类号: G03G9/00
- IPC分类号: G03G9/00 ; G03G9/087 ; G03G9/13 ; G03G9/08
摘要:
Toner contains a binder resin containing a crystalline resin having a urethane and/or urea bonding; and a colorant, wherein in a diffraction spectrum of the toner as measured by an X-ray diffraction instrument, a ratio {C/(C+A)} of an integral intensity C of the spectrum derived from the crystalline structure to an integral intensity A of the spectrum derived from the non-crystalline structure is 0.12 or greater, wherein the toner satisfies the following relation 1: T1−T2≦30° C. (Relation 1), where T1 represents the maximum endothermic peak in the first temperature rising from 0° C. to 100° C. at the temperature rising rate of 10° C./min and T2 represents the maximum exothermic peak in the first temperature falling from 100° C. to 0° C. at the temperature falling rate of 10° C./min as T1 and T2 are measured by diffraction scanning calorimetry (DSC).