Invention Grant
- Patent Title: Electrostatic latent image developing toner
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Application No.: US15265482Application Date: 2016-09-14
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Publication No.: US09753388B2Publication Date: 2017-09-05
- Inventor: Masashi Tamagaki , Tomoyuki Ogawa
- Applicant: KYOCERA Document Solutions Inc.
- Applicant Address: JP Osaka
- Assignee: KYOCERA Document Solutions Inc.
- Current Assignee: KYOCERA Document Solutions Inc.
- Current Assignee Address: JP Osaka
- Agency: Studebaker & Brackett PC
- Priority: JP2015-181818 20150915
- Main IPC: G03G9/093
- IPC: G03G9/093 ; G03G9/08

Abstract:
A shell layer of a toner particle includes first resin particles containing no charge control agent and second resin particles containing a charge control agent. A number average particle diameter of the first resin particles is at least 30 nm and no greater than 60 nm, and a number average particle diameter of the second resin particles is at least 30 nm and no greater than 60 nm. A shell coverage is at least 60% and no greater than 80%. A shell chargeable ratio is at least 0.10 and no greater than 0.20. A roughness of surface regions of toner particles in which no external additive is present is at least 10 nm and no greater than 15 nm.
Public/Granted literature
- US20170075244A1 ELECTROSTATIC LATENT IMAGE DEVELOPING TONER Public/Granted day:2017-03-16
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