Printer utilizing temperature evaluation and temperature detecti

Details Printer utilizing temperature evaluation and temperature detecti Printer utilizing temperature evaluation and temperature detecti

1993-07-02

1996-07-23

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

358298, 347183, B41J 2365

Patent

active

055394434

ABSTRACT:
A printer for recording a multitone image in which pulse width correction data is generated based on a temperature output of a thermistor for detecting the temperature of a head mount of a thermal head and an output of a data cumulating circuit for cumulating pulse width data inputted to the thermal head; and an adding circuit which adds the pulse width data to an output obtained by conversion, from inputted tone data, made by a .gamma. correcting circuit, thus accomplishing a temperature compensation. The temperature compensation constants necessary for calculating pulse width correction data are also determined.

REFERENCES:
patent: 4827281 (1989-05-01), Lubinsky et al.
patent: 5006866 (1991-04-01), Someya
patent: 5066961 (1991-11-01), Yamashita
patent: 5162813 (1992-11-01), Kuroiwa et al.

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