Re: Kreen and film cleaner
I'll check out this PEC-12 for the film, thanks for the tips.
> I use PEC-12 archival Photographuc Emulsion Cleaner for film,
> available from photographic suppliers, and isopropyl alcohol for
> cleaning the krene. The alcohol may also be used on the film. But
> either will remove any but water-based opaques. I tried Pressine
> aerosol film cleaner and it damaged the krene (made it pucker).
> No brush here, I just try to do the cleaning without generating any
> static to attract dust, hair, etc. And I look carefully for anything
> in the image area when the vacuum drawdown is complete.
> --Eric Holub, SF
I'll get some air, that seems to be the best option along with the alcohol for the Kreen.
I'm happy to hear about the Kreen replacement timeframe. I may be in need to purchase
some as I've noticed some week spots.
Thanks again for the advice.
> There are products for cleaning solvent and debris from film negatives
> but generally a spraying of compressed air will suffice to clean them
> of dust. Make that a routine. Blow raw material off as well before
> placing on the vacuum frame.
> I also use compressed air whenever I open the exposing unit, blowing
> above and below the Kreene. Kreene itself can be cleaned with rubbing
> alcohol. It's amazing how marked up it can get over time.
> I've also found replacement of the Kreene to be necessary on a fairly
> routine basis. Eventually it seems to take on a mind of its own and
> fails to properly secure during vacuum. At that point, it becomes a
> liability. You can buy the stuff in rolls and a roll is going to last
> you a good long time.
> My processing is done in a small darkroom so, while dust does
> accumulate on stuff over time, I can't say that airborne material is
> much of a problem that can be dealt with the compressed air spray.
According to Boxcar's new website they change the Kreene every couple
of days or so. I change it reluctantly whenever it starts to fail on
me, every couple of months or so. You must be doing something right.
--- In PPLetterpress@yahoogroups.com, "nagraph1" <nagraph@...> wrote:
> A few weeks ago I was talking to our main polymer supplier, Jet USA
> and they said some plants actually change the kreene each day, and I
> was very surprised at this. This is typically in plants using flexo
> for printing medical boxes where the type is almost miniature and
> they can't afford any screwups in dosage or usage instructions, and
> the printing is done in multiple colors. Since the material is not
> that expensive, they said they'll sell a plant large quantities of
> the material at a time. And I plod one with one that is slightly
> older than a day by a couple of years, and still get excellent