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:
Jun. 19, 1984
Filed:
Aug. 14, 1981
Applicant:
Inventors:
Donald T Dolan, Ridgefield, CT (US);
Henry Stalzer, Danbury, CT (US);
Assignee:
Pitney Bowes Inc., Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346154 ; 3461 / ; 346160 ;
Abstract
This invention relates to circuitry for non-impact printers that use light emitting diodes (LED's) to produce an image on a photoconductor and for controlling the output of each LED of a light emitting diode array that is part of the printer. A binary weighted duty cycle control is used to obtain substantial uniformity in the light emitted from each LED. The binary cycle is time related so that through use of a four-bit code, sixteen outputs are available which yield sixteen periods during which an LED may be enabled.