Collotype

Definition of Collotype

Col´lo`type
n.1.A photomechanical print made directly from a hardened film of gelatin or other colloid; also, the process of making such prints. According to one method, the film is sensitized with potassium dichromate and exposed to light under a reversed negative. After the dichromate has been washed out, the film is soaked in glycerin and water. As this treatment causes swelling in those parts of the film which have been acted on by light, a plate results from which impressions can be taken with prepared ink. The albertype, phototype, and heliotype are collotypes.

Related Words

collotype printing, hectograph, heliotype, photogelatin process, planographic printing, planography
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Collocation
Collocution
Collocutor
Collodion
Collodion process
Collodionize
Collodiotype
Collodium
Collogue
Colloid
Colloidal
Colloidality
Collop
Colloped
Collophore
Colloquial
Colloquialism
Colloquialize
Colloquist
Colloquy
-Collotype-
Collow
Colluctancy
Colluctation
Collude
Colluder
Collum
Collusion
Collusive
Collusory
Collutory
Colluvies
Colly
Collybist
Collyrium
Coloboma
Colocasia
Colocolo
Colocynth
Colocynthin
Cologne
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