Invention Grant
US07727694B2 Toner for developing electrostatic image, and image forming method and apparatus and process cartridge using the toner
失效
用于显影静电图像的调色剂,以及使用调色剂的成像方法和设备以及处理盒
- Patent Title: Toner for developing electrostatic image, and image forming method and apparatus and process cartridge using the toner
- Patent Title (中): 用于显影静电图像的调色剂,以及使用调色剂的成像方法和设备以及处理盒
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Application No.: US11856248Application Date: 2007-09-17
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Publication No.: US07727694B2Publication Date: 2010-06-01
- Inventor: Hiroyuki Murakami , Masahide Inoue , Masayuki Hagi , Takuya Kadota , Yoshihiro Mikuriya , Hideaki Yasunaga , Hiroaki Katoh , Yoshimichi Ishikawa , Kazuoki Fuwa
- Applicant: Hiroyuki Murakami , Masahide Inoue , Masayuki Hagi , Takuya Kadota , Yoshihiro Mikuriya , Hideaki Yasunaga , Hiroaki Katoh , Yoshimichi Ishikawa , Kazuoki Fuwa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Limited
- Current Assignee: Ricoh Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-251998 20060919
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G9/00

Abstract:
A toner including toner particles including a binder resin, and a colorant, and an external additive present on a surface of the toner particles, wherein the external additive includes a silica having an average primary particle diameter of from 100 to 500 nm and a BET specific surface area of from 800 to 1000 m2/g. An image forming method including forming an electrostatic image on an image bearing member; developing the electrostatic image with the toner to form a toner image; and transferring the toner image on to a receiving material. An image forming apparatus including an image bearing member bearing an electrostatic image; a developing device developing an electrostatic image with the toner to form a toner image on the image bearing member; a transfer device transferring the toner image to a receiving material; and a fixing device fixing the toner image on the receiving material.
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