Line printer

Details Line printer Line printer

1977-11-04

1978-08-08

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9322, 101110, 101 95, 101 9344, 101103, B41J 144

Patent

active

041049675

ABSTRACT:
Line printer having a plurality of rotatable printing rings coaxially arranged adjacent each other and carrying on the peripheries thereof a plurality of characters for the printing and a movable roller pad adapted to abut against the printing rings at the predetermined printing position so that the selected characters of the printing rings held at the printing position are simultaneously printed on a paper held between the printing rings and the roller pad so as to form simultaneously a line of printing thereon in each printing cycle. The printing rings are rotated in the same direction in each printing cycle in order to eliminate a complicated mechanism for reciprocally driving the printing rings. The selection of the characters, temporary arresting of the same at the printing position and the printing operation by the roller pad are effected during a first half cycle of each printing cycle while the paper feeding and the releasing of the characters from the printing position are effected during the last half cycle of each printing cycle by way of a single common driving shaft.

REFERENCES:
patent: 3422754 (1969-01-01), Bakardjier
patent: 3690249 (1972-09-01), Nihira
patent: 3734012 (1973-05-01), Huggins
patent: 3785288 (1974-01-01), Hunter
patent: 3807301 (1974-04-01), Decker
patent: 3838638 (1974-10-01), Clary
patent: 3875859 (1975-04-01), Busch
patent: 3916787 (1975-11-01), Raggensack

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