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:
Nov. 25, 2014
Filed:
Mar. 18, 2013
Applicants:
Koji Masuda, Kanagawa, JP;
Hidemasa Suzuki, Tokyo, JP;
Inventors:
Koji Masuda, Kanagawa, JP;
Hidemasa Suzuki, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/14 (2006.01); G01N 21/55 (2014.01); G03G 15/01 (2006.01); G03G 15/16 (2006.01); G03G 15/00 (2006.01); G03G 15/04 (2006.01);
U.S. Cl.
CPC ...
G03G 15/04 (2013.01); G01N 21/55 (2013.01); G03G 15/0131 (2013.01); G03G 15/161 (2013.01); G03G 2215/00616 (2013.01); G03G 2215/0161 (2013.01); G03G 15/5058 (2013.01); G03G 2215/00059 (2013.01);
Abstract
A reflective optical sensor includes at least three light-emitting elements; a lighting optical system that guides light emitted from the light-emitting elements to a toner pattern; and at least three light-receiving elements that receive the beams of light reflected by the toner pattern. The lighting optical system has a lateral magnification m that satisfies m≦P/S, where S is the size of the light-emitting elements and P is the arrangement pitch of the light-emitting elements.