[pure-silver] Re: Old Kodak Projection paper :
- From: "Dave Valvo" <dvalvo@xxxxxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 28 Jan 2005 17:58:38 -0800
Yes Kodagraph was used in the printing industry usually to make halftone
images. Used with dot matrix screens and a point light source. It will
develop in any paper developer. The rough texture was to prevent Newton
rings because negatives / screens were placed in contact with the paper. I
don't have any sensit. properties any more. But I expect it to be very high
contrast. If you intend to use it for pictorial imagery you may want to use
a low contrast developer.
It was the late '70's that I worked with those papers.
Dave.
----- Original Message -----
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, January 28, 2005 12:35 PM
Subject: [pure-silver] Re: Old Kodak Projection paper :
>
> ----- Original Message -----
> From: "Barrie Bunning" <barrieb@xxxxxxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Friday, January 28, 2005 11:07 AM
> Subject: [pure-silver] Re: Old Kodak Projection paper :
>
>
> > Greetings all;
> > I have a few questions for the group :-
> > I have recently come buy 2 unopened packets of '
> > Kodak Kodagraph PRQ5 projection paper, it says on the
> > label one of a
> > range of Kodak Document materials. It is Rough single
> > weight, use Wratten
> > series OB safelight, made in England.
> > Q1. What color is Wratten OB ?
> > Q2. What developer to use.
> > Q3. What was the 'Original purpose' of this paper.
> > I have opened up one packet, in the dark, and my standard
> > safelight seems
> > OK, the paper has a really rough texture, is reasonably
> > slow to enlarge
> > with but seems to be similar to Grade 2. My test
> > images are lovely, but
> > the paper is really thin and the base color is a little
> > pinkish, but nice.
> > I have yet to try toning. Any Info would be greatly
> > appreciated as I have
> > 98 sheets of 20" x 16" paper that seems to be in
> > excellent condition for
> > its age ? .
> > Cheers Barrie B.
> >
> The OB was the old standard Kodak filter for graded paper.
> The OC has more a more limited spectrum. It is suitable for
> any paper which is "safe" with the OB filter but the OB
> filter should not be used for papers specifying an OC filter
> such as modern variable contrast filters.
> I think Kodagraph was a document copying paper, Dave Valvo
> will know.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
>
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