Printing head driving apparatus

Details Printing head driving apparatus Printing head driving apparatus

1983-05-10

1985-04-30

Goldberg, E. A.

Recorders

Thermal recording

400120, 219216, G01D 1510

Patent

active

045147370

ABSTRACT:
According to this invention, a voltage signal generating circuit is provided for generating a voltage signal in synchronism with a print timing signal produced when a printing head is driven. A detection circuit detects a power source voltage for driving the printing head. A driving pulse output circuit outputs a driving pulse signal having a pulse generating timing and pulse width corresponding to variations in the power source voltage, on the basis of the voltage signal which is output from the voltage signal generating circuit and detection signal which is output from the detection circuit. A driving circuit is adapted to drive a driving head with a printing timing and printing pressure corresponding to the driving pulse signal.

REFERENCES:
patent: 3885469 (1975-05-01), Sugimoto et al.
patent: 4027761 (1977-06-01), Quaif
patent: 4168421 (1979-09-01), Ito
patent: 4370666 (1983-01-01), Noda et al.
patent: 4409600 (1983-10-01), Minowa
patent: 4434354 (1984-02-01), Nakata
patent: 4442342 (1984-04-01), Yoneda

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