Apparatus for controlling the power supply to a load in a reprod

Details Apparatus for controlling the power supply to a load in a reprod Apparatus for controlling the power supply to a load in a reprod

1998-06-25

2000-09-05

Walberg, Teresa

Electric heating

Heating devices

With power supply and voltage or current regulation or...

399 67, H05B 102

Patent

active

061146692

ABSTRACT:
A power supply circuit for accurately and instantaneously supplying power from the mains to an electrical load, more particularly a fixing unit and/or paper preheating unit in a copying machine or printer provided with such a circuit. In this power supply circuit, flicker (voltage fluctuations) induced in the mains and interference radiation are reduced as far as possible. The power supplied is controlled for this purpose by a solid state relay (SSR) operated with phase cutting, the phase angle of the switching signal being varied around a phase angle corresponding to the power supplied.

REFERENCES:
patent: 4355225 (1982-10-01), Marsh
patent: 4493984 (1985-01-01), Yamauchi
patent: 4711560 (1987-12-01), Hosaka et al.
patent: 5669038 (1997-09-01), Kishimoto
European Abstract: Heater Controller, 09106215, Apr. 22, 1997, Ricoh Co., Ltd.
European Abstract: Image Forming Device, 09146422, Nov. 22, 1995, Nanba Kuniharu.

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