Machine for typing characters

Details Machine for typing characters Machine for typing characters

1980-02-06

1982-03-23

Sewell, Paul T.

Typewriting machines

Including selection of type-face by...

4001442, 400210, 400696, 4006971, B41J 2936

Patent

active

043209807

ABSTRACT:
Characters are typed in reverse, i.e. light characters on a dark background by first typing all over the field of the character using an ink ribbon, back spacing and typing the character using a correcting ribbon. The first typing may be effected with a solid character covering the whole field in one or a few operations but, in the preferred embodiment is effected by repeatedly typing a vertical bar with tiny line feed increments, say 1/120". The first typing may take place on depression of a special key, which also effects the back spacing and the correcting ribbon; the character key is then struck. Preferably the whole sequence takes place automatically upon depression of the character key while a mode selector is in REVERSE mode.

REFERENCES:
patent: 3719262 (1973-03-01), Taplin
patent: 3868673 (1975-02-01), Mau, Jr. et al.

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