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Re: collotypes



Michael Morin wrote:

> A photosensitive gelatin emulsion is coated on to a 1/2 thick piece plate
> glass that has been cleaned and leveled in a warming oven. The perfectly
> plumb plate is coated, then cooled and exposed to film negative to
> ultraviolet light and developed in temperture contoled water bath.  The
> plates  hardened and printed with an inked roller in a fashioned similar to
> a hand printed lithograph.  A book _Studio Collograph_ by Kirby is the best
> historic/technical manual out there.  Great pictures of process, equipment
> and images.

However, exposure in ultraviolet light is not necessary. Collotype
plates can be exposed using any (controlled) light source.

Mats Broberg
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ARS IMPRIMIS
Hauptvägen 102
SE-123 58 Farsta
Sweden
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Phone & fax: +46 8 604 59 81
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