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. 29, 2011
Filed:
Dec. 22, 2008
Naoki Ishikawa, Kashiwa, JP;
Yasuo Fukatsu, Abiko, JP;
Tsuyoshi Moriyama, Toride, JP;
Hitoshi Kato, Toride, JP;
Naoki Ishikawa, Kashiwa, JP;
Yasuo Fukatsu, Abiko, JP;
Tsuyoshi Moriyama, Toride, JP;
Hitoshi Kato, Toride, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A sheet conveyance apparatus capable of detecting a sheet end portion in a short time period even if sheets are conveyed at a narrow interval and at high speed, thus making it possible to expedite the start timing of a subsequent sheet alignment operation. In accordance with results of detection by lateral registration detection sensors performed when a sheet reaches a lateral registration detection sensor unit, the sensor unit is moved in a width direction for sheet end detection. Based on a moving distance of the sensor unit from a standby position to a position where the sheet end is detected, a shift amount to be shifted the sheet in the width direction, i.e., a lateral registration error, is computed.