Variable print-hammer control for on-the-fly-printing

Details Variable print-hammer control for on-the-fly-printing Variable print-hammer control for on-the-fly-printing

1977-12-22

1980-02-19

Sewell, Paul T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

101 9303, 400 51, 4001573, 400166, B41J 130, B41J 938

Patent

active

041892461

ABSTRACT:
A rotatable print disc is mounted on a carrier which traverses along the print line. The disk is moved from each character position to the next by the shortest distance and it is stopped at the time of printing. The carrier is moved from one print position to the next at a speed which is selected depending on the time required for the disk to rotate to the next character. Printing takes place with the carrier moving at one of a number of speeds. The force utilized to drive the hammer to print the characters is varied dependent on which character is being printed. Hammer firing for each character is timed dependent on printing speed and upon the force utilized to drive the hammer.

REFERENCES:
patent: 3858509 (1975-01-01), Grundherr
patent: 4030591 (1977-06-01), Martin et al.
patent: 4058195 (1977-11-01), Fravel et al.

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