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:
Sep. 09, 2008
Filed:
Feb. 20, 2004
Takehiko Kawasaki, Tokyo, JP;
Norio Kaneko, Atsugi, JP;
Naoaki Maruyama, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A sheet material information-detecting apparatus is provided which is capable of detecting the type of a sheet material even if the sheet material is anisotropic. When recording paper sheet P is fed, feed rollersandare moved to narrow the nip of the rollers and front edge of recording paper sheet is pushed thereto to correct the oblique feed. Thereafter, external force is applied to recording paper sheet P by external force applying member. A signal based on the external force is detected by signal detecting means, and sheet material information-acquiring meansidentify the type of the recording paper sheet. Owing to the oblique feed correction, the type of the sheet material can be identified precisely even if the sheet material is anisotropic.