Photocopying – Contact printing – Light boxes
Patent
1992-12-04
1994-11-29
Braun, Fred L.
Photocopying
Contact printing
Light boxes
355204, 355219, 363 21, G03G 2100, G03G 1502
Patent
active
053694724
ABSTRACT:
The present invention is a power supply apparatus capable of providing one or more individually controllable high voltage outputs for various components within an electrophotographic printing machine. Receiving power from an input power source, the power supply apparatus produces various high voltage outputs, wherein each output is capable of providing a range of high voltage potentials. The individual high voltage outputs are regulated by a microcontroller which receives an analog voltage signal from a voltage sensor and produces a voltage control signal which is then used to regulate the outputs in a conventional manner for resonant- or switching-type power supplies. The microcontroller regulates the output potentials by varying the voltage control signals for each of the outputs as a function of the difference in magnitude between the analog voltage signal and a voltage set-point value associated with the output.
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Flanders Ted L.
Raj Guru B.
Sud Om P.
Basch Duane C.
Braun Fred L.
Xerox Corporation
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