Invention Grant
- Patent Title: Image forming apparatus and process cartridge
- Patent Title (中): 成像设备和处理盒
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Application No.: US14791658Application Date: 2015-07-06
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Publication No.: US09360824B2Publication Date: 2016-06-07
- Inventor: Tomohiro Fukao , Tsuyoshi Nozaki , Yoshihiro Mikuriya , Yoshimichi Ishikawa , Atsushi Yamamoto , Kazuoki Fuwa , Tomoharu Miki , Naoki Nakatake , Takeshi Yamashita , Tetsushi Sakuma
- Applicant: Tomohiro Fukao , Tsuyoshi Nozaki , Yoshihiro Mikuriya , Yoshimichi Ishikawa , Atsushi Yamamoto , Kazuoki Fuwa , Tomoharu Miki , Naoki Nakatake , Takeshi Yamashita , Tetsushi Sakuma
- 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: JP2014-156700 20140731
- Main IPC: G03G21/00
- IPC: G03G21/00

Abstract:
An image forming apparatus is provided which includes an image bearer, a charger, an irradiator, a developing device to develop an electrostatic latent image on the image bearer with a toner to form a toner image, a transfer device to transfer the toner image onto a transfer medium, and a cleaner to remove toner particles remaining on the image bearer without being transferred. The toner includes a mother particle including a binder resin and a colorant and one or more external additives. At least one of the external additives includes primary particles having a number average particle diameter in the range of 0.05 to 0.30 μm. The cleaner includes an elastic body blade having a contact part with the image bearer. The contact part has a surface elastic modulus in the range of 15 to 25 N/mm2 and a surface friction coefficient in the range of 0.5 to 0.7.
Public/Granted literature
- US20160033924A1 IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE Public/Granted day:2016-02-04
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