Re: Hand collotype in process
to answer your question, here is what Kent Kirby says on the matter in his book "Studio Collotype:
"In spite of great claims for the efficacy of one support over another, there is probably little, if any, detectable difference in image quality that can be traced with certainty to the influence of the support. Joseph Albert chose glass plates because they were dimensionally stable, chemically inert, and allowed exposure from both sides. This solved the adhesion problems that plagued early printers. Glass continued to be used as a support until rotary presses replaced flat beds. August Albert, who pioneered the use of aluminum plates, claimed they provided better detail in the shadows, although there is much evidence that firms changing to aluminum plates believed the contrary to be true. What is most probably true is that, since many firms either imported German pressmen or trained under German supervision, the choice support reflected that tradition.
Glass and aluminum supports are the most commonly used by today's collotypists. There is nothing to suggest that zinc, copper, or plastic will not work as well ..."
Jack Brubaker wrote:
On Wed, Jun 17, 2009 at 8:28 PM, <firstname.lastname@example.org> wrote: