Typewriter with a correction function

Details Typewriter with a correction function Typewriter with a correction function

1987-02-17

1989-04-11

Burr, Edgar S.

Typewriting machines

Including control of format by programmed-control-system

400279, 400551, 400697, B41J 1144, B41J 1914

Patent

active

048200638

ABSTRACT:
An electronic typewriter is provided with a function that the print head is moved leftward linearly when a backspace key is continuously operated after the printing paper is fed more than a preset amount, while the print head traces the printed characters when the printing paper is fed less than the preset amount. The typewriter is convenient in erasing a mistyped character on a printed line with a superscripted or subscripted character and also useful in printing new characters on the same fed printed line.

REFERENCES:
patent: 4207011 (1980-06-01), Pascoe
patent: 4374626 (1983-02-01), Hooker
patent: 4392758 (1983-07-01), Bowles et al.
patent: 4448557 (1984-05-01), Hosu et al.
patent: 4480931 (1984-11-01), Kanikura et al.
patent: 4481603 (1984-11-01), McCashill et al.
patent: 4561793 (1985-12-01), Blanchard, Jr.
patent: 4607966 (1986-08-01), Ueno et al.
patent: 4618275 (1986-10-01), Brinkmann et al.

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