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:
Jan. 02, 2001
Filed:
Jul. 14, 1994
Hiroyuki Deguchi, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
An image processor has a transparent plate on which a document is placed, and a document cover which covers the document placed thereon. The document cover moves freely between a closed position at which it covers the transparent plate and the document placed thereon and an open position at which it permits the transparent plate to be exposed. Provision is further made of a document illumination source which moves relative to the document placed on the transparent plate, and an image sensor which receives light irregularly reflected by the document that is illuminated by the document illumination source. The image processor further has a document detector which detects the region of the transparent plate where the document exists based on an output signal from the image sensor. The document covering surface of the document cover has a regular reflectance of from 1.5 to 40% and gives a relative intensity of irregularly reflected light as received by the image sensor of from N2.5 to N8.5 in terms of lightness in the Munsell color system. The document detector discriminates whether a document exists on the region of the transparent plate or not in a different manner depending upon whether the document cover is at the closed position or whether the document cover is at the open position.