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collotype printing [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-05-04

English

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

A planographic, photo-mechanical, non-screen printing process often used for fine illustration work.

OBS

[Collotype printing] is done from a glass plate prepared by printing a negative on a gelatin film containing dichromate. Where exposed the gelatin hardens. The hardened parts retain ink whereas the watery parts repel it.

OBS

Albertype was an early version of the collotype process, utilized for printing photographic reproductions in quantity. The various collotype processes were employed commercially from the latter part of the 19th century to the mid 20th century, and were especially suited to reproducing watercolors because of the grain they produced. Eventually these processes were replaced by offset lithography.

Key term(s)
  • albert-type

French

Domaine(s)
  • Lithographie, offset et phototypie
DEF

[...] procédé photomécanique qui utilise des plaques de métal ou de verre enduites de gélatine bichromatée comme surface d'impression.

OBS

On insole sous un négatif une couche de gélatine bichromatée étendue sur une dalle de verre. La gélatine repousse l'encre dans ses parties humides et la prend en force dans les parties tannées. La phototypie produit des demi-teintes, non tramées, fidèles à l'original.

OBS

[La] phototypie [aussi] nommée photocollographie et, à sa naissance, albertypie, du nom de son principal inventeur, [est un] procédé utilisé surtout à la fin du XIXe et encore au début du XXe siècle [...]

Spanish

Campo(s) temático(s)
  • Litografía, offset y fototipia
DEF

Procedimiento de impresión fundado en el uso de clisés de gelatina con relieve.

CONT

Las planchas de fototipia consisten en un soporte (placa de vidrio o de metal) cubierto por una parte finamente granulada de gelatina bicromatada.

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