Printing apparatus for enciphering/deciphering text

Typewriting machines – Key reassignment – Electrically powered

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Details

400104, 4001442, 380 55, B41J 130, G09C 300

Patent

active

047705515

ABSTRACT:
A printer employing a daisy wheel or other print wheel uses a single motor both to translate a carriage along a line of printing and to rotate the daisy wheel. The daisy wheel is rotated through one complete character set for movement of the carriage along the print line by one character printing space. Type on the fingers of the daisy wheel is progressively displaced relative to a center line through the ordered set to be printed early on the line of printing by a distance which is a proportional part of one print line letter space, the displacement proportional to the position of a character in the set between a first character and a last character.
Also disclosed is a controller for the printer, the controller including enciphering capabilities whereby enciphered text is produced.

REFERENCES:
patent: 644165 (1900-02-01), Freret, Jr.
patent: 2571427 (1951-10-01), Drachman
patent: 3273408 (1966-09-01), Nagel et al.
patent: 3356199 (1967-12-01), Robinson
patent: 3371766 (1968-03-01), Staller
patent: 3858509 (1975-01-01), Grundherr
patent: 3884339 (1975-05-01), Castoldi et al.
patent: 3926061 (1975-12-01), Paulson
patent: 4664543 (1987-05-01), Bohg et al.

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