Invention Grant
- Patent Title: Electrostatic latent image developing white developer, image forming method, image forming apparatus, and process cartridge
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Application No.: US15522306Application Date: 2015-09-29
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Publication No.: US10067438B2Publication Date: 2018-09-04
- Inventor: Yoshihiro Murasawa , Hiroshi Tohmatsu , Hitoshi Iwatsuki , Mariko Takii , Koichi Sakata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko
- Applicant: Yoshihiro Murasawa , Hiroshi Tohmatsu , Hitoshi Iwatsuki , Mariko Takii , Koichi Sakata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko
- 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: JP2014-221376 20141030
- International Application: PCT/JP2015/004920 WO 20150929
- International Announcement: WO2016/067521 WO 20160506
- Main IPC: G03G9/107
- IPC: G03G9/107 ; G03G9/113 ; G03G9/09 ; G03G9/087

Abstract:
Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 μm to 1.00 μm, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.
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