Transfer roll with ceramic-fluorocarbon coating containing cylin

Details Transfer roll with ceramic-fluorocarbon coating containing cylin Transfer roll with ceramic-fluorocarbon coating containing cylin

1987-12-11

1988-12-27

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291215, 29132, B21B 2700

Patent

active

047930411

ABSTRACT:
An ink transfer roll composed of a steel base covered by a ceramic-fluorocarbon outer layer into which are formed generally cylindrically shaped ink holes having a hemispherical bottom, a generally cylindrical intermediate portion and a rounded, beveled entryway. The ink holes are produced using a pulsed high energy source, such as a pulsed laser. An intermediate layer of corrosion resistant metal and fluorocarbon may be deposited between the steel base and the outer layer of ceramic-fluorocarbon material. Adhesion of the ceramic-fluorocarbon layer to the transfer roll is improved if corrosion resistant metal-fluorocarbon material is contained in the ceramic-fluorocarbon layer such that the quantity of corrosion resistant metal-fluorocarbon material in the ceramic-fluorocarbon layer gradually decreases in the direction away from the intermediate layer-outer layer interface, the quantity of corrosion resistant metal-fluorocarbon material in said outer layer being greatest at said interface.

REFERENCES:
patent: 3177558 (1965-04-01), Gronholz et al.
patent: 3613578 (1971-10-01), Heurich
patent: 3655426 (1972-04-01), Fuchs
patent: 3942230 (1976-03-01), Nalband
patent: 4101686 (1978-07-01), Strella et al.
patent: 4264181 (1981-04-01), Lentz et al.
patent: 4272179 (1981-06-01), Seanor

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