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:
Apr. 28, 1998
Filed:
Feb. 11, 1997
Atsushi Munakata, Yokohama, JP;
Toshiro Tomono, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A sheet thickness detecting device for detecting the thickness of a recording member precisely irrespective of accuracy of parts is disclosed. A state that a roller 1 of a pair of rollers 1, 2 is positioned at a predetermined angle of rotation, is detected by a flag 11 fixed to the axle of the roller 1 and a photosensor 12 for roller rotation angle detection. A signal from a photosensor 8 for roller pair axes distance detection is processed in accordance with a signal from the photosensor 12 to detect the thickness of a recording member P. In this device, the thickness of the recording member P is detected when the rollers 1, 2 are positioned at the predetermined angle of rotation. Thus, it can be detected accurately without being affected by eccentricities of the rollers 1, 2.