Repetitive mode for thermal printing lift-off correction

Details Repetitive mode for thermal printing lift-off correction Repetitive mode for thermal printing lift-off correction

1984-07-31

1986-02-25

Sewell, Paul T.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

400120, B41J 29373

Patent

active

045726876

ABSTRACT:
Ribbon (22) in thermal printing has an outer layer which adheres to printed characters of intermediate temperatures, lower than printing temperatures. The printhead (7) has a column of electrodes (9) which sweep across the character area. Erase mode selector (16) causes erase of the same character twice, first at a temperature level moderately more than the normal erase level and one at a temperature moderately less than the normal erase level. Erasure in that dual mode is generally effective even for extreme conditions of paper, environment and other influences.

REFERENCES:
patent: 4307971 (1981-12-01), Kane et al.
patent: 4384797 (1983-05-01), Anderson et al.
patent: 4396308 (1983-08-01), Applegate et al.
patent: 4429318 (1984-01-01), Kobata
patent: 4434356 (1984-02-01), Craig et al.
patent: 4453839 (1984-06-01), Findlay et al.
IBM Technical Disclosure Bulletin, entitled "Self-Correcting Thermal Ink," by W. D. Bailey et al., vol. 25, No. 11A, Apr. 1983, p. 5811.

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