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. 24, 2015
Filed:
Nov. 10, 2011
Applicants:
Eijiro Ohashi, Tokyo, JP;
Haruki Ishibashi, Numazu, JP;
Inventors:
Eijiro Ohashi, Tokyo, JP;
Haruki Ishibashi, Numazu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G01B 11/14 (2006.01); B65H 7/02 (2006.01);
U.S. Cl.
CPC ...
G01B 11/14 (2013.01); B65H 7/02 (2013.01); B65H 2403/532 (2013.01); B65H 2511/20 (2013.01); B65H 2511/212 (2013.01); B65H 2511/514 (2013.01); B65H 2511/518 (2013.01); B65H 2553/412 (2013.01); B65H 2553/81 (2013.01); B65H 2701/1315 (2013.01); B65H 2801/06 (2013.01);
Abstract
An rotation angle of a crank arm is calculated on the basis of a period of time in which a recording material is detected or a period of time in which the recording material is not detected and an end position of the recording material is calculated from the calculated rotation angle, so that detection of the end position of the recording material can be started regardless of a stop position of a sensor and the end position of the recording material can be accurately detected without using a dedicated drive source or member to reciprocate the sensor.