Recording method and apparatus maintaining constant density by a

Details Recording method and apparatus maintaining constant density by a Recording method and apparatus maintaining constant density by a

1996-01-02

1997-05-27

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

347194, B41J 236

Patent

active

056336713

ABSTRACT:
A recording apparatus includes a heat generating element which is driven to generate heat and thereby effect image recording on a recording medium. In the apparatus, a reference voltage for driving the heat generating element is set, and a driving voltage based on the reference voltage is output. A signal is detected which corresponds to an amount of electric power supplied to the heat generating element during image recording. A control unit controls the outputting of the driving voltage based on the amount of electric power, and adjusts the energy to be applied to the heat generating element.

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patent: 4415908 (1983-11-01), Sugiara
patent: 4479132 (1984-10-01), Iwakura
patent: 4514737 (1985-04-01), Suzuki
patent: 4684959 (1987-08-01), Mori et al.
patent: 4827286 (1989-05-01), Sugiara et al.
patent: 4870428 (1989-09-01), Kuwabara et al.

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