The process or act of creating prints or images using the collotype method; the technique of photogel printing.
From collotype + -ing (gerund and present participle suffix). Used to describe the technical process and industry of producing collotype prints.
Collotyping was an entire industry—factories had skilled technicians who understood the chemistry and precision required to make perfect collotype plates, and this knowledge has largely disappeared as digital took over. When a technology dies, we lose not just the machines but the expertise of entire communities.
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