Thermal head driving integrated circuit and thermal head driving

Details Thermal head driving integrated circuit and thermal head driving Thermal head driving integrated circuit and thermal head driving

1993-03-05

1996-04-16

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Having driving circuitry for recording means

B41J 2355

Patent

active

055087280

ABSTRACT:
In a thermal head driving integrated circuit, input serial data are converted into parallel data by a shift register. The ANDs of the parallel data obtained and a strobe signal is obtained, and transistors are driven in accordance with the ANDs. An input selection circuit determines the serial/parallel conversion timing and the transistor driving timing in accordance with the value input from select signal input terminals. The serial/parallel conversion timing and the transistor driving timing are constantly different from each other, so that latch circuits for latching the parallel data are obviated. The select signal input terminals are selectively pulled up/down.

REFERENCES:
patent: 4649401 (1987-03-01), Kojima et al.

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