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:
Mar. 23, 2004
Filed:
Aug. 29, 2000
Applicant:
Inventors:
Katsuyuki Yamazaki, Shizuoka-ken, JP;
Toshiyuki Sekiya, Mishima, JP;
Mitsuo Shiraishi, Shizuoka-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/47 ;
U.S. Cl.
CPC ...
B41J 2/47 ;
Abstract
SLED (Self-scanning type Light Emitting Diode) array chips of 56 pieces and one driving circuit which generates signals to drive the 56 SLED array chips are provided. A signal is generated by another driving circuit. A driving current control resistor which is connected in series to a common base of driving transistors is provided to variably adjust an input voltage value acting as a control signal of the driving circuit. Thus, a light emission array head, a driving level adjustment method of a driving signal for this head, and an image formation apparatus containing this head can be simplified.