Invention Grant
- Patent Title: Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
- Patent Title (中): 清洁装置和图像形成装置,处理盒和中间转印单元,每个包括清洁装置
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Application No.: US13064260Application Date: 2011-03-15
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Publication No.: US08712309B2Publication Date: 2014-04-29
- Inventor: Kazuhiko Watanabe , Keiji Okamoto
- Applicant: Kazuhiko Watanabe , Keiji Okamoto
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2010-063184 20100318
- Main IPC: G03G21/00
- IPC: G03G21/00

Abstract:
A cleaning device includes a laminated blade member including multiple layers made of materials different in permanent set value and a holding member to hold the blade member. The multiple layers include an edge layer formed of a material higher in permanent set value among the materials and a backing layer disposed against a distal surface of the edge layer. The laminated blade member includes a leading edge where an edge portion of the edge layer contacting a cleaning target is located and a trailing edge where the holding member supports the blade member. A ratio of a thickness of the edge layer to a thickness of the backing layer at the trailing end of the blade member is smaller than a ratio thereof at the leading edge of the blade member.
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