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:
Dec. 30, 2003
Filed:
Jul. 09, 2002
Applicant:
Inventors:
Assignee:
Hitachi Printing Solutions, Ltd., Ebina, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/385 ; G03G 1/304 ;
U.S. Cl.
CPC ...
B41J 2/385 ; G03G 1/304 ;
Abstract
A laser control device includes a light amount varying section for varying the light exposure amount at plural levels is provided with a correction section for correcting the difference between the times to the peaks of laser outputs of print signals input to a laser control circuit. The turning on time of each print signal is corrected, whereby the difference between the times to the peaks of laser outputs of the print signals different in light exposure amount can be eliminated for correcting the difference between image print positions.