Invention Grant
- Patent Title: Electrophotographic blade, process cartridge, and electrophotographic image forming apparatus
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Application No.: US17221663Application Date: 2021-04-02
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Publication No.: US11262670B2Publication Date: 2022-03-01
- Inventor: Kenichi Mochizuki , Ryosuke Takayama , Takahiro Miyazawa
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc., IP Division
- Priority: JPJP2020-069810 20200408,JPJP2021-027566 20210224
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G21/00

Abstract:
An electrophotographic blade to be brought into contact with a contact member, comprises a plate spring, and a resin layer that covers at least a part of a surface of the plate spring to form a contact region that comes into contact with a contact member. In the state where one of ends of the plate spring is fixed, a length (L) from the fixed end to the another end is 5 mm to 20 mm, and a force needed to displace the another end by 1 mm is 5 N/m to 100 N/m. The resin layer satisfies the requirements: (1) the thickness of the resin layer is 0.05 mm to 2.00 mm, (2) the tan δ value of the resin layer in the range of 5° C. to 40° C. is 0.05 to 0.70, and (3) the elastic modulus of the resin layer is 1.0 to 60.0 MPa.
Public/Granted literature
- US20210318637A1 ELECTROPHOTOGRAPHIC BLADE, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS Public/Granted day:2021-10-14
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