Multi-impact character erasing apparatus with control of correct

Details Multi-impact character erasing apparatus with control of correct Multi-impact character erasing apparatus with control of correct

1989-11-28

1991-06-18

Wiecking, David A.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

400232, 400210, B41J 29373

Patent

active

050245457

ABSTRACT:
In a printed character printed with a printing apparatus provided with a plurality of type elements and a print hammer, the specified left or right edge portion thereof has ink adhered heavily on the paper, and this specified edge portion is difficult to be erased when erasing a wrongly printed character with a correction ribbon.
In the disclosed character erasable printing apparatus, after moving the carriage from the print position by a predetermined minute distance in the printing direction or in its opposite direction toward the specified edge portion, a first hammering for erasure is carried out, and subsequently after moving the carriage in the direction opposite to above-described movement, at least, and without feeding the correction ribbon relative to the carriage, a second hammering for erasure is carried out with an unused fresh portion of the correction ribbon made to face the specified edge portion having residual ink.

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patent: 4686900 (1987-08-01), Crystal et al.
patent: 4708505 (1987-11-01), Tsumura et al.

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