Invention Grant
- Patent Title: Toner for electrostatic latent image development
- Patent Title (中): 用于静电潜像显影的调色剂
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Application No.: US13954722Application Date: 2013-07-30
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Publication No.: US08999620B2Publication Date: 2015-04-07
- Inventor: Takanori Tanaka , Yukinori Nakayama , Hiroaki Moriyama , Takeo Mizobe , Hiroki Uemura
- Applicant: KYOCERA Document Solutions Inc.
- Applicant Address: JP Osaka-Shi
- Assignee: KYOCERA Document Solutions Inc.
- Current Assignee: KYOCERA Document Solutions Inc.
- Current Assignee Address: JP Osaka-Shi
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: JP2012-170576 20120731
- Main IPC: G03G9/093
- IPC: G03G9/093 ; G03G9/08

Abstract:
A toner for electrostatic latent image development, containing toner particles composed of toner core particle containing at least a binder resin and a shell layer coating the toner core particle. Average circularities D4 to D7 of toner particles within predetermined particle diameter ranges are each no less than 0.960, the difference (Dmax−Dmin) between a maximum value Dmax among D4 to D7 and a minimum value Dmin among D4 to D7 is no greater than 0.015. The shell layer is smoothened to a predetermined level. And, cracks in a direction approximately perpendicular to a surface of the toner core particles are observable inside the shell layer when cross-section of the toner particle is observed using a transmission electron microscope.
Public/Granted literature
- US20140038097A1 TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT Public/Granted day:2014-02-06
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