Invention Application
- Patent Title: TONER, AND DEVELOPER
- Patent Title (中): TONER和开发商
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Application No.: US12557105Application Date: 2009-09-10
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Publication No.: US20100068644A1Publication Date: 2010-03-18
- Inventor: Hisashi Nakajima , Shinya Nakayama , Saori Yamada , Mitsuo Aoki , Hiroyuki Kishida , Hyo Shu , Yasutada Shitara , Masahide Inoue
- Applicant: Hisashi Nakajima , Shinya Nakayama , Saori Yamada , Mitsuo Aoki , Hiroyuki Kishida , Hyo Shu , Yasutada Shitara , Masahide Inoue
- Priority: JP2008-234347 20080912; JP2008-291093 20081113; JP2008-309625 20081204; JP2008-329928 20081225
- Main IPC: G03G9/087
- IPC: G03G9/087

Abstract:
The present invention provides a toner which contains at least a binder resin, and a colorant, wherein the binder resin contains a polyester resin (A) obtained by polycondensation of an alcohol component with a carboxylic acid component containing one of a purified rosin and a modified rosin, and a polyester resin (B) obtained by polycondensation of a carboxylic acid with an alcohol component containing a specific alkylene oxide adduct of bisphenol A, and wherein when the carboxylic acid component containing a purified rosin is used in the carboxylic acid component for the polyester resin (A), a mass ratio [(B)/(A)] of the polyester resin (B) to the polyester resin (A) is 2/8 to 6/4.
Information query