Black oxide lithographic ink metering roller

Details Black oxide lithographic ink metering roller Black oxide lithographic ink metering roller

1984-09-12

1985-08-27

Coughenour, Clyde I.

Printing

Planographic

Rotary machines

101348, 101451, 101350, 29132, B41F 146, B41F 3126

Patent

active

045371270

ABSTRACT:
A steel ink metering roller for use in lithographic printing having an engraved surface that has been nitride hardened followed by an oxidizing process that results in a surface with a composition of mainly Fe.sub.3 O.sub.4.

REFERENCES:
patent: 2530282 (1950-11-01), Brodie
patent: 2578921 (1951-12-01), Cramer
patent: 3613578 (1971-10-01), Heurich
patent: 3924313 (1975-12-01), Broderick
patent: 3974555 (1976-08-01), Strohmeier
patent: 4009658 (1977-03-01), Heurich
patent: 4060882 (1977-12-01), Pospisil
patent: 4287827 (1981-09-01), Warner
patent: 4391879 (1983-07-01), Fabian
patent: 4407196 (1983-10-01), Matalia

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