Print head thermocontrol

Details Print head thermocontrol Print head thermocontrol

1996-03-04

1998-11-17

Le, N.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

B41J 236, B41J 237, B41J 2365

Patent

active

058383565

ABSTRACT:
A print head thermocontrol includes a combination of power electronics that can be preset with a software potentiometer and that regulates the amplitude of the print head voltage according to the ambient temperature, a control unit operating according to a predictive control method for supplying individual print elements with print pulses and preheating pulses of variable pulse duration and an allocated print control unit for producing a digital imprint.

REFERENCES:
patent: 3577137 (1971-05-01), Brenman, Jr.
patent: 4275402 (1981-06-01), Kern
patent: 4510507 (1985-04-01), Ishikawa
patent: 4591876 (1986-05-01), Nozaki et al.
patent: 4955736 (1990-09-01), Iwata et al.
patent: 5038154 (1991-08-01), Yamamoto et al.
patent: 5051756 (1991-09-01), Nomura et al.
patent: 5181048 (1993-01-01), Cha
patent: 5365257 (1994-11-01), Minowa et al.
patent: 5453776 (1995-09-01), Gunther et al.

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