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:
Feb. 07, 1989
Filed:
Aug. 31, 1987
Applicant:
Inventors:
John A Kennedy, Jr, Ridge, NY (US);
Walter Hansen, Cold Spring Harbor, NY (US);
Assignee:
Dr.-Ing. Rudolf Hell GmbH, Kiel, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346108 ; 358300 ;
Abstract
A laser diode imagesetter having multiple resolution operating modes, includes means for stabilizing the optical output power from the semiconductor laser diode during the scan trace interval across a photosensitive material so as to maintain a high extinction ratio for the laser diode even when its driving current is changed to a different level in order to operate the imagesetter at a different resolution mode.