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. 13, 2010
Filed:
Jun. 27, 2007
Takehiko Kawasaki, Kamakura, JP;
Norio Kaneko, Atsugi, JP;
Takehiko Kawasaki, Kamakura, JP;
Norio Kaneko, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An external force application unit is allowed to impact on a sheet material, and an external force detection unit detects an impact force through the sheet material. Further, there is provided a push-in sensing unit for detecting abnormality of the sheet material entering a space between the external force application unit and the external force detection unit. When the push-in sensing unit detects the abnormality, a control circuit operates a motor to rotate a cam, thereby moving the external force application unit to be retracted in a direction in which the external force application unit is moved away from an entering position of the sheet material.