The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2017
Filed:
Nov. 25, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Yoichi Osada, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A rotatable operating member which reduces manufacturing costs and prevents false detection of a rotation angle has a member and a sheet. The member has a circumferential surface, and the sheet is fixed to the circumferential surface of the member. A reflectivity of a surface of the sheet is different from a reflectivity of the circumferential surface of the member. The sheet has a plurality of holes with width A formed side by side in a circumferential direction and the sheet is fixed such that a gap with width A is provided between both ends of the sheet in the circumferential direction. A part of the circumferential surface is regularly exposed from the holes and the gap in a circumferential direction of the member.