Print head with dual exchangeable hot inking rolls

Details Print head with dual exchangeable hot inking rolls Print head with dual exchangeable hot inking rolls

1984-06-22

1985-07-16

Crowder, Clifford D.

Printing

Rolling contact machines

Rotary

101352, B41F 3130

Patent

active

045289077

ABSTRACT:
A print head has a print roller carrying one or more type holders thereon for imprinting a work piece movable between the print roller and a support roller, and has dual hot ink rollers carried on an ink roller support member which is movable so as to simultaneously engage one of the ink rollers with the printer roller for inking the type thereon and to move the other ink roller to a position away from the printer roller permitting replacement of the ink roller without stopping the printing operation. The support member carrying the dual ink rollers may be manually movable or may be movable by a hydraulically actuated rack and pinion or by an air cylinder. The printer roller may be equipped with a counter for providing a signal after a specified number of revolutions indicating a change of inking rollers is necessary. In the automatic embodiments, the counter may be connected to a control unit for automatically moving the support member to engage a fresh inking roller.

REFERENCES:
patent: 1443164 (1923-01-01), Bracken
patent: 2162812 (1939-06-01), Harrold et al.
patent: 3274932 (1966-09-01), Caza
patent: 3712215 (1973-01-01), Cunningham
patent: 3731621 (1973-05-01), Neckel
patent: 3871294 (1975-03-01), Kagari et al.
patent: 4342520 (1982-08-01), Isobe et al.
patent: 4380194 (1983-04-01), Carter et al.
U.S. patent application Ser. No. 535,997 filed Sep. 26, 1983 (Davison).

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