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. 01, 2005
Filed:
Nov. 01, 2002
Applicant:
Katsuaki Hirai, Ibaraki, JP;
Inventor:
Katsuaki Hirai, Ibaraki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H035/04 ;
U.S. Cl.
CPC ...
Abstract
A sheet processor capable of punching a sheet of paper without causing degraded alignment for filing or deteriorated quality of binding, and an image forming apparatus equipped with the sheet processor are provided. The sheet processor includes a punched hole detector for detecting whether a punched hole has already been made at an intended punching position in a sheet of paper on which an image has been formed, and a controller that controls a punching unit so as not to carry out a punching operation if it is determined that a punched hole exists at the intended punching position on the basis of a signal from the punched hole detector.