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. 16, 1991
Filed:
Oct. 18, 1989
Applicant:
Inventor:
Yasuo Ito, Inagi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502081 ; 358486 ;
Abstract
Image reading equipment has a light source for irradiating an original image, a reader for photoelectrically reading the original image, a detector for detecting a peak output level of said reader and a controller for controlling a read operation by the thus detected peak level. The original image is scanned at a speed appropriate for the light quantity exposing the original so that a stable reading of the original is realized even when the quantity of exposing light is deficient.