Invention Grant
- Patent Title: Blade and image forming apparatus incorporating same
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Application No.: US15062705Application Date: 2016-03-07
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Publication No.: US09798284B2Publication Date: 2017-10-24
- Inventor: Eisuke Shimizu , Kazuhiko Watanabe , Takaaki Tawada , Yuu Sakakibara
- Applicant: Eisuke Shimizu , Kazuhiko Watanabe , Takaaki Tawada , Yuu Sakakibara
- 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: JP2015-044804 20150306; JP2015-110766 20150529
- Main IPC: G03G21/00
- IPC: G03G21/00

Abstract:
A multilayered blade made of an elastic material includes an edge layer, having a contact edge to contact an object, and at least one backup layer laminated on the edge layer.The blade has a converted loss tangent tan δ of 0.23 or greater and 0.51 or smaller in a temperature range of from 0° C. to 50° C. The converted loss tangent tan δ is defined as: X = A A + B × L 1 + B A + B × L 2 , where X represents the converted loss tangent tan δ, A represents a thickness in millimeters of the edge layer, B represents a thickness in millimeters of the at least one backup layer, L1 represents a variation of a loss tangent tan δ of the edge layer in the temperature range of from 0° C. to 50° C., and L2 represents a variation of a loss tangent tan δ of the at least one backup layer in the temperature range of from 0° C. to 50° C.
Public/Granted literature
- US20160259293A1 BLADE AND IMAGE FORMING APPARATUS INCORPORATING SAME Public/Granted day:2016-09-08
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