DE3230226

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 obta...

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Bibliographic Details
Main Authors DOLAN, DONALD T., RIDGEFIELD, CONN., US, STALZER, HENRY, DANBURY, CONN., US
Format Patent
LanguageEnglish
Published 14.01.1993
Subjects
BASIC ELECTRIC ELEMENTS
CALCULATING
CINEMATOGRAPHY
COMPUTING
CORRECTION OF TYPOGRAPHICAL ERRORS
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HANDLING RECORD CARRIERS
HOLOGRAPHY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
MAGNETOGRAPHY
PERFORMING OPERATIONS
PHOTOGRAPHY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
PRESENTATION OF DATA
PRINTING
RECOGNITION OF DATA
RECORD CARRIERS
SELECTIVE PRINTING MECHANISMS
SEMICONDUCTOR DEVICES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary: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.
Bibliography:Application Number: DE19823230226