Thermal recording head driving device

Details Thermal recording head driving device Thermal recording head driving device

1992-09-28

1994-09-13

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76PH, 40012014, B41J 236

Patent

active

053463188

ABSTRACT:
Disclosed herein is a recording head driving device for driving a number of recording heads such as thermal heads or the like for printing characters on recording mediums. A control signal; for controlling the time required to energize each of the recording heads; is input to recording-head driving gate circuits from AND gates and/or OR gates in accordance with the present and/or past recorded information output from adjacent latch circuits. A plurality of collating circuits are provided each of which allows each of the latch circuits to retain or hold recorded information on at least past three lines as the previous recorded information and feeds back the past latch outputs of the latch circuit to any one of the outputs of the latch circuit.

REFERENCES:
patent: 4330786 (1982-05-01), Hatabe et al.
patent: 4518971 (1985-05-01), Endo
patent: 4591877 (1986-05-01), Shiratsuki
patent: 4695847 (1987-09-01), Ishii et al.
patent: 4700199 (1987-10-01), Horlander
patent: 4704617 (1987-11-01), Sato et al.
patent: 4937590 (1990-06-01), Robillard
patent: 5115252 (1992-05-01), Sasaki
patent: 5132703 (1992-07-01), Nakayama

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