12649Re: [PPLetterpress] Re: Shelf Life for Photopolymer plates
- Jun 18, 2011Hi Ed
Well, first of all, you have not been on this list since day one, not by
a long shot. In fact, that honor belongs solely to me.
I would hardly herald the end of film since my livelihood depends upon
it. But it certainly behooves me to notify folks that the options are
disappearing. There is far less choice in film today than there was just
a few years ago, and far fewer suppliers of it. A great many of the
"service bureaus" that were once relied upon in Los Angeles are now gone.
Your reconstruction of my comment about the government is, of course,
purposefully misleading. I did not say there were very recent
governmental regulations to greatly reduce the life of ... film
negatives. Please do not distort what someone says just to make your own
My comment about changes in film chemistry are based on what suppliers
have told me. I have no idea of what other areas of film production
might be, per your reference to the Analog Photography Users Group, my
concern is only to what is applicable to photopolymer plate processing.
And to say that it does not look promising for the letterpress printer
should not be so easily dismissed. We are not talking here about
photography and the abilities of folks who are knowledgeable regarding
using silver based film negatives in the darkroom.
On 6/18/11 8:09 PM, Ed Inman wrote:
> Gerald is an accomplished printer who often gives great advice, but he has also been heralding the end of film (and generally antagonistic about its future) since day one on this list. So anything he proclaims about film "going bad" in 6 months to a year needs to be considered in that light.
> There have, in fact, been no "very recent governmental regulations" to "greatly reduce" the life of any silver based black& white film negatives. At least none that have appeared on the Analog Photography Users Group or other professional photography sites where people actually know something about photo chemistry.
> Has film gotten more expensive? Yes. Is film indestructible? No. But most properly-processed silver based lith film negatives stored in a cool, dry environment will easily last 100 years, and a whole new generation is learning to appreciate the value of (and guarantee the future of) traditional camera films of all types:
> -----Original Message-----
>> From: Eric<Megalonyx@...>
>> Subject: [PPLetterpress] Re: Shelf Life for Photopolymer plates
>> --- In PPLetterpress@yahoogroups.com, "Gerald Lange"<Bieler@...> wrote:
>>> 3) The old mantra was "save your negs." This is no longer valid. Very recent governmental regulations and changes in film chemistry have greatly reduced the longevity of film negatives. I see film negs going bad between six months to a year. And I have perfectly fine film negatives that are well over a decade old.
>> Do you think this is true for all graphic arts film, or just the RA film used in imagesetting? Are they getting rid of the silver? It should be that silver emulsion properly fixed and properly rinsed would be permanent. Machine-processed film would not have the same duration of fix and especially rinse that tray-developed film could.
>> --Eric Holub, SF
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