Re: Run length of Polymer plates
- Something further on this, as it was addressed earlier. In terms of longevity, photopolymer does not last long, though proper care during printing and storage can extend the life. Essentially, if you touch the photopolymer surface and it does not respond with tackiness, the printing advantage is gone. You might as well be printing on acetate.
As Peter suggested, hang on to your film negs if you have any intention of regenerating. With proper storage, film negs tend to last for years. I have some that are at least a decade old and still retain their color and emulsion tack.
--- In PPLetterpress@yahoogroups.com, Gerald Lange <Bieler@...> wrote:
> The claim for photopolymer under ideal conditions is something like
> 1,000,000. The only time I've detected wear is when I printed a couple
> of thousand sheets on a paper impregnated with tiny bits of bamboo.
> I remember Pat Reagh telling me of a job he did on 10,000 sheets of
> Mexican bark paper that went through three sets of the plates.
> Normally, though, the stuff is quite resistant to wear.
> Best way to store them is in zip lock bags. A trick is to breathe into
> the bag before closing. That provides moisture and carbon dioxide (which
> revitalizes photopolymer).
> Store in a cool dark area away from electric devices, lights, motors,
> etc. Ozone, combined with high temperture, is their enemy.
> I've been printing with steel-backed plates for about two decades now
> and they do not curl in my experience. You can store them vertically
> without concern.