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:
Jun. 09, 1998
Filed:
Oct. 19, 1995
Junichi Noguchi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An original-detection device includes a pressing member for pressing an original on an original-mount from a side opposite to a surface illuminated by scanning light, an absorption member, provided on an original-pressing surface of the pressing member, for absorbing light of a predetermined wavelength region within an invisible region, a filter for transmitting light of the predetermined wavelength region of reflected light obtained by projecting the scanning light onto the original or the original-pressing surface, a photosensor for sensing light transmitted through the filter, and a detection circuit for detecting the original on the original-mount based on an output from the photosensor.