Printer power supply

Details Printer power supply Printer power supply

1994-10-12

1997-01-21

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400 54, B41J 2938, B41J 230

Patent

active

055954464

ABSTRACT:
A printer is disclosed of the dot matrix type having a series of hammers with pins that print upon an underlying media, and which are released from magnetic retention by reversing the polarity of a permanent magnet and having electro-mechanical drive circuits and logic circuits. A power supply supplies an output of a voltage level for driving the electro-mechanical circuits connected to a ribbon drive, platen drive, paper feed, shuttle motor, and fans at a given voltage and the hammers at a different voltage. A thermal sensor is connected to a heat sink of the power supply, and to the printer controller to change the rate of printing when pre-established temperatures are sensed.

REFERENCES:
patent: 4540295 (1985-09-01), Okunishi et al.
patent: 4877344 (1989-10-01), Watahiki et al.

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