Invention Grant
- Patent Title: Toner, electrophotographic apparatus and process cartridge
- Patent Title (中): 调色剂,电子照相设备和处理盒
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Application No.: US11754659Application Date: 2007-05-29
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Publication No.: US07695880B2Publication Date: 2010-04-13
- Inventor: Kimihiro Yoshimura
- Applicant: Kimihiro Yoshimura
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2006-151777 20060531
- Main IPC: G03G9/08
- IPC: G03G9/08

Abstract:
A toner, and an electrophotographic apparatus and an electrophotographic process cartridge using the toner are provided having excellent charge stability without adversely affecting electric properties of the toner even when used for a long period of time and having excellent image density stability without bringing about image deletion and blurring. The toner includes colored particles containing at least a binder resin and a colorant, and two or more external additives. At least one of the external additives includes hydrophobic treated mesoporous particles, and the mesoporous particles are inorganic particles of at least one type selected from the group consisting of silica, titanium oxide, alumina, cerium oxide, and strontium titanate.
Public/Granted literature
- US20070281232A1 TONER, ELECTROPHOTOGRAPHIC APPARATUS AND PROCESS CARTRIDGE Public/Granted day:2007-12-06
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