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ILLUMINATION SYSTEM POWER SUPPLY

IP.com Disclosure Number: IPCOM000024575D
Original Publication Date: 1981-Feb-28
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 44K

Publishing Venue

Xerox Disclosure Journal

Abstract

In power supplies intended for use with gaseous discharge lamps which provide illumination for electrostatic copiers, it is common practice to use a charging resistor in series with the rectifier and energy storage capacitor bank. The major shortcoming of this system, however, is the large amount of energy which is dissipated by the series charging resistor and thereby wasted. This waste of energy can be eliminated in such systems by using the resistance of the fuser heating element in series with the primary, i.e., low voltage, winding of the power transformer. In this way, the fuser of the electrostatic copier is enabled to utilize the energy dissipated in charging the capacitor bank.

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XEROX DISCLOSURE JOURNAL

ILLUMINATION SYSTEM POWER SUPPLY Proposed Robert F. Buchheit Classification

U.S. C1. 355/3FV
Int. Cl. G03g 15/00

In power supplies intended for use with gaseous discharge lamps which provide illumination for electrostatic copiers, it is common practice to use a charging resistor in series with the rectifier and energy storage capacitor bank. The major shortcoming of this system, however, is the large amount of energy which is dissipated by the series charging resistor and thereby wasted. This waste of energy can be eliminated in such systems by using the resistance of the fuser heating element in series with the primary, i.e., low voltage, winding of the power transformer. In this way, the fuser of the electrostatic copier is enabled to utilize the energy dissipated in charging the capacitor bank.

I Volume 6 Number 1 January/February 1981 23

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24 XEROX DISCLOSURE JOURNAL

Volume 6 Number 1 January/February 1981

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