Invention Grant
- Patent Title: Toner
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Application No.: US14707770Application Date: 2015-05-08
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Publication No.: US09720340B2Publication Date: 2017-08-01
- Inventor: Tsuneyoshi Tominaga , Yasushi Katsuta , Katsuyuki Nonaka , Taiji Katsura , Akane Masumoto , Harumi Takada , Kohei Mizushima
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2014-100911 20140514
- Main IPC: G03G9/093
- IPC: G03G9/093 ; G03G9/087 ; G03G9/08

Abstract:
Provided is a toner that has satisfactory chargeability and hardly causes a reduction in image density, fogging, and density unevenness in various environments ranging from a low-temperature and low-humidity environment to a high-temperature and high-humidity environment. The toner includes toner particles obtained by fixing resin particles to toner base particles each containing resins, in which: the resins contain 50.0 mass % or more of a styrene-acrylic resin and 1.0 to 40.0 mass % of a polyester resin A; the polyester resin A contains 0.10 to 30.00 number % of an isosorbide unit; the fixing amount of the resin particles to the toner base particles is from 0.1 to 5.0 parts by mass with respect to 100 parts by mass of the toner base particles; and the glass transition temperature of the resin particles is higher than the glass transition temperature of the toner base particles.
Public/Granted literature
- US20150331344A1 TONER Public/Granted day:2015-11-19
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