Heater power controller for ink jet printer

Details Heater power controller for ink jet printer Heater power controller for ink jet printer

1986-03-10

1987-04-21

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 75, 219497, 219501, G01D 1518, H05B 102

Patent

active

046600574

ABSTRACT:
A heater power controller for an ink jet printer wherein the output of a comparator making a comparison between a detection signal of the temperature of an ink in a print head of the ink jet printer and a reference signal is chopped by a clock having a predetermined period so as to be converted into a chopper signal, by which the supply of the power to a heating means provided in the head is controlled. A regulating device for regulating the duty ratio of the chopper signal is provided. Each of pulses constituting the chopper signal is made out of phase with a pulse supplied to other pulse-driven load.

REFERENCES:
patent: 3999190 (1976-12-01), Brown et al.
patent: 4093847 (1978-06-01), Walker et al.
patent: 4223207 (1980-09-01), Chow
patent: 4314143 (1982-02-01), Bilstad et al.
patent: 4459469 (1984-07-01), Ishima

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