- Patent Title: Toner, developer, image forming apparatus, and process cartridge
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Application No.: US15874014Application Date: 2018-01-18
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Publication No.: US10303071B2Publication Date: 2019-05-28
- Inventor: Hiroyuki Takeda , Junichi Awamura , Hiroshi Yamada , Akira Tanaka
- Applicant: Hiroyuki Takeda , Junichi Awamura , Hiroshi Yamada , Akira Tanaka
- Applicant Address: JP Tokyo
- Assignee: Richoh Company, Ltd.
- Current Assignee: Richoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2017-038291 20170301
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/087 ; G03G9/09 ; G03G21/18 ; G03G15/20

Abstract:
A non-magnetic toner is provided. The non-magnetic toner comprises a polyester resin, a release agent, and a colorant. A storage elastic modulus at 100° C. (G′(100° C.)) of the toner is from 1.0×103 to 1.0×106 Pa, and a storage elastic modulus at 160° C. (G′(160° C.)) of the toner is from 1.0×102 to 1.0×104 Pa. A ratio of loss elastic modulus to storage elastic modulus at 100° C. (tan δ(100° C.)) of the toner is greater than that at 130° C. (tan δ(130° C.)), and the tan δ(100° C.) and the tan δ(130° C.) are each within the range of from 1 to 2.
Public/Granted literature
- US20180253022A1 TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE Public/Granted day:2018-09-06
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