Oil Immersion - this time the hardware

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jjs - 15 Nov 2004 16:49 GMT

Back in February I learned from the Net Wisdom about oil-immersion for
printing.

Next I need to know if anyone has a pointer to the hardware - glass negative
carriers - pictures or testimonials if possible, and if they are available
for the D5 in 4x5 inch, but _especially_ for the Leitz IIa enlarger (which
is 6x10cm). I have surfed and found nothing online.

(I have found Carlwen Industries in Minnesota but I have not found their web
site. Carlwen has a Decalin solution which is supposed to evaporate without
residue. However, I'd like to homework here before visiting them.)

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Gregory W Blank - 15 Nov 2004 17:18 GMT

> Back in February I learned from the Net Wisdom about oil-immersion for
> printing.
[quoted text clipped - 7 lines]
> site. Carlwen has a Decalin solution which is supposed to evaporate without
> residue. However, I'd like to homework here before visiting them.)

Oil immersion carrier is very old Omega product probably 1940-1950's at the
latest, and was used for the earlier D enlargers, not the D6 or D5, although
if you in fact had one it probably could be modified to work in the D6 or D5
chassis. Try Harry Taylor, he is about the best source for something of that nature..
or perhaps can provide suggestions. I really don't know what the benefit would be
with the exception of masking scratches using a condensor lamphouse and very
scratched negatives. (That was the idea)

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Alecj - 17 Nov 2004 20:31 GMT

Greg:

Carlwen was a separate maker of the oil immersion negative carriers [they
may have made the earlier ones for Omega when Carlwen was still in
Maryland]. The technology comes from the movie industry, and the process
was known as a "liquid gate".

JJS: I didn't think Carlwen [MN] was still in business. My last catalog was
1992. The fluid they used has been generally banned from public use [I
understand the movie industry still has access to it - know anybody
there???].

I have used some "no scratch" liquid in my 35mm carrier with success. But,
it's not the volatile liquid once available and the negative has to be
carefully cleaned after use. That Decalin solution you mentioned would
obviously work, but this site:
http://tinyurl.com/5rsmk indicates it is toxic and I bet you can't get it
[or especially, get it shipped].

Richard Knoppow is very knowledgable on this subject and will most likely
weigh in.

There are [were] some oil immersion glass offered on ebay [no carrier
though] recently in larger sizes. Don't know if they sold.

> > Back in February I learned from the Net Wisdom about oil-immersion for
> > printing.
[quoted text clipped - 15 lines]
> with the exception of masking scratches using a condensor lamphouse and very
> scratched negatives. (That was the idea)

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Gregory W Blank - 17 Nov 2004 21:53 GMT

I'll ask Omega,... is still in Maryland,.....they have just moved a
couple of times (3 to be precise).

> Greg:
>
[quoted text clipped - 51 lines]
> very
> > scratched negatives. (That was the idea)

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