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tri-metal plate [1 record]

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Alphabetical list of terms

Record 1 1999-05-25

English

Subject field(s)
  • Lithography, Offset Printing and Collotype
DEF

A type of lithographic press plate, consisting of a base metal of stainless steel, aluminium or other metal on which other metals are plated, usually copper and then chromium.

OBS

Lithographic plate making techniques are used to etch the surface metal of image to reach the copper for image base; surface metal remains for the non-printing areas. The nature of the surface metal with the dampening solution helps in repelling the ink from non-printing areas. Such plates have a long life and no mechanically grained surface.

Key term(s)
  • trimetal plate

French

Domaine(s)
  • Lithographie, offset et phototypie
CONT

Les plaques à trois métaux. Le cuivre formant les zones imprimantes et le chrome (à l'extérieur) les zones non imprimantes sont déposés par électrolyse sur un troisième métal servant uniquement de support.

Spanish

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