Method of compensating for resistance tolerances in printing a m

Details Method of compensating for resistance tolerances in printing a m Method of compensating for resistance tolerances in printing a m

1992-09-23

1995-12-05

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

347183, B41J 237

Patent

active

054733561

ABSTRACT:
A method of compensating for resistance tolerances in the printing of a multi-tone picture with a printing device which includes printing elements. Starting from a smaller number of required tone grades than the number of available tone grades, represented by energy values, printing is always effected with those available tone grades whose available optical density comes close to the required optical density. The differences between the required optical density and actually available optical density are added to form a mean deviation whose magnitude is minimized by selecting the corresponding available tone grade so that the created visual picture has the required optical density.

REFERENCES:
patent: 4806949 (1989-02-01), Onuma et al.
patent: 4887092 (1989-12-01), Pekruhn et al.

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