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:
Nov. 20, 1990
Filed:
Jun. 28, 1989
Applicant:
Inventor:
Nea Y Woo, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; H01S / ;
U.S. Cl.
CPC ...
346108 ; 372 29 ; 372 31 ;
Abstract
A driver is disclosed for a diode laser for use in a laser printer. The driver current is controlled in accordance with a digital video signal. In order to provide an effective means of converting the video signal to the desired driver current, the digital signal is provided to a plurlality of current-weighted subdrivers. In order to overcome the effects of optical feedback in an apparatus, signals to the subdrivers are composite signals formed from a high frequency carrier and the video signal.