04455562 is referenced by 170 patents and cites 5 patents.

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.

Title
Control of a light emitting diode array
Application Number
6/292985
Publication Number
4455562
Application Date
August 14, 1981
Publication Date
June 19, 1984
Inventor
Henry Stalzer
Danbury
CT, US
Donald T Dolan
Ridgefield
CT, US
Agent
William D Soltow Jr
Albert W Scribner
Peter Vrahotes
Assignee
Pitney Bowes
CT, US
IPC
G01D 15/14
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