Printing apparatus

Details Printing apparatus Printing apparatus

1980-07-10

1983-02-08

Sewell, Paul T.

Typewriting machines

Annular typewriter

101DIG13, 346155, B41J 310, B41J 316, B41J 2716

Patent

active

043726950

ABSTRACT:
A print head in which an electrostatic character image is formed on a print drum by direct contact with electrodes, developed and printed out all within the same revolution of the drum. The characters are generated electronically using a keyboard or data terminal. The drum may be made small and the print head take the form of a hand-held printer. While retaining its small diameter the drum may be extended axially to form a line printer.

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IBM Tech. Disc. Bulletin, J. Greyson, vol. 3, No. 11, Apr. 1961, p. 15.
IBM Tech. Disc. Bulletin, E. P. Damm, Jr., vol. 15, No. 9, Feb. 1973, pp. 2837-2838.

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