- Patent Title: Toner, developer, image forming apparatus, and process cartridge
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Application No.: US14433770Application Date: 2013-10-11
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Publication No.: US09785075B2Publication Date: 2017-10-10
- Inventor: Shinya Nakayama , Atsushi Yamamoto , Minoru Masuda , Susumu Chiba , Toyoshi Sawada , Hiroshi Yamashita
- Applicant: Shinya Nakayama , Atsushi Yamamoto , Minoru Masuda , Susumu Chiba , Toyoshi Sawada , Hiroshi Yamashita
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-242166 20121101
- International Application: PCT/JP2013/078397 WO 20131011
- International Announcement: WO2014/069263 WO 20140508
- Main IPC: G03G9/087
- IPC: G03G9/087 ; G03G9/08

Abstract:
Provided is a toner containing a binder resin. The binder resin contains a crystalline resin. The toner has a maximum endothermic peak temperature (P1) of from 50° C. to 80° C. and a total endothermic amount (Q) of from 35 J/g to 90 J/g at a first temperature elevation of differential scanning calorimetry. A ratio (Qp/Q) of a total endothermic amount (Qp) of the toner in a temperature range of from 20° C. to the maximum endothermic peak temperature (P1) to the total endothermic amount (Q) of the toner is from 0.65 to 0.83.
Public/Granted literature
- US20150248073A1 TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE Public/Granted day:2015-09-03
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