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. 21, 2009
Filed:
Mar. 18, 2005
Tsuyoshi Moriyama, Toride, JP;
Takako Hanada, Yokohama, JP;
Masayoshi Taira, Kashiwa, JP;
Akinobu Nishikata, Kashiwa, JP;
Hiroaki Tomiyasu, Toride, JP;
Tsuyoshi Moriyama, Toride, JP;
Takako Hanada, Yokohama, JP;
Masayoshi Taira, Kashiwa, JP;
Akinobu Nishikata, Kashiwa, JP;
Hiroaki Tomiyasu, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention comprises registration roller pairs which detect a skew amount of a sheet being conveyed; registration roller pairs which perform skew correction of the sheet while the sheet is being conveyed; a punch unit which performs punching of the sheet; a punch-unit driving portion which drives the punch unit; a sheet-edge detecting sensor which performs detection of a sheet edge in a direction intersecting with a sheet conveyance direction; a punch-unit moving device which moves the punch unit in the direction intersecting with the sheet conveyance direction; a sheet detecting sensor which performs detection of a sheet position in the sheet conveyance direction; and a controller portion which performs control such that after skew of the sheet is corrected by the registration roller pairs in accordance with detection results of skew amount sensors, and punching is performed on the sheet by the punch-unit moving device and the punch driving portion in accordance with a detection result of the sheet detecting sensor.