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. 28, 2014
Filed:
Sep. 09, 2010
Applicant:
Daisuke Morikawa, Kashiwa, JP;
Inventor:
Daisuke Morikawa, Kashiwa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/46 (2006.01); H04N 1/04 (2006.01); H03F 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image reading apparatus irradiates a document with light, and reads the document image based on the reflected light and includes a light source which includes a plurality of LEDs, and irradiates the document with light. The apparatus also includes an LED current adjusting unit which sets the amount of current to be supplied to each LED by changing the current amounts from the end portion to the central portion in the main scanning direction of document reading, and a driving circuit which drives the LEDs by the current amounts set by the LED current adjusting unit in correspondence with the LEDs.