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:
Jul. 22, 1997
Filed:
May. 24, 1995
Tsutomu Utagawa, Yokohama, JP;
Shinobu Arimoto, Yokohama, JP;
Kazuo Yoshinaga, Machida, JP;
Toshio Hayashi, Kawasaki, JP;
Takehiko Nakai, Tokyo, JP;
Tetsuya Nagase, Kawasaki, JP;
Nobuatsu Sasanuma, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus includes, as an arrangement for discriminating a specific image with high precision, first illumination means for illuminating an object image so as to perform a normal reading operation, second illumination means for illuminating the object image with light having characteristics different from those of the light from the first illumination means so as to discriminate whether or not the object image is a specific image, and means for adjusting the quantity of light emitted from the first and second illumination means.