Re: Fwd: inkjet negative density with Epson 2200 printer

Mark,

Perhaps I misunderstood the thread but my understanding was that it
was about getting more contrast from the printer than the color
palette allows for processes like albumen, salted paper, and VDB. If
the issue is Pt./Pd. or even pure palladium, I have had no problem at
all getting sufficient contrast using the color palette and the
method outlined in PDN, and in any event one could easily drop the
contrast of the process by more Na2 or dichromate as needed. However,
for UV processes that need a negative of over about 1.95 the color
palette does not allow it, at least for the Epson 2200.

BTW, if you test the method that Sam and I worked out and find it
useful please feel free to send it to registered PDN users.

Sandy

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>Oops, I accidently sent that before I was finished!
>
>Actually, there seems to be surprising lattitude in increasing the
>the ink laid down using the ink configuration setting before you see
>evidence of puddling or pizza wheel marks and this method can add a
>fair amount of UV density. I prefer this method to introducing
>black ink providing it produces adequate density without problems in
>drying, puddling, or pizza wheel marks. If it fails to do so, for
>Salt prints, Van Dyke and Albumen, then I would go ahead and use the
>method you and Sam devised-I haven't tested it for retentioin of
>tonal values, but it's quite clever.
>
>Mark
>
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>Date: Tue, 28 Dec 2004 13:20:31 EST
>From: Ender100@aol.com
>Subject: Re: inkjet negative density with Epson 2200 printer
>To: alt-photo-process-l@sask.usask.ca
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>Hi Sandy,
>
>I think the original issue was whether or not the Color Density
>Range Palette (CDRP) would provide sufficient density with processes
>involving very long exposure scales, such as "Salt prints, Van Dyke,
>& Albumen" and the issue was not directed to Platinum & Palladium or
>most other processes, for which there is more than sufficient
>density in the standard Color Density Range Palette. The other
>related issue I believe is that these three processes do not offer a
>means of contrast control, which would allow you to shorten the
>exposure scale just a bit to achieve perfect results with the CDRP.
>
>
>
>At this point, I would recommend the fix that you and Sam worked out
>as a good approach when the other means fail to achieve enough
>ink/negative density. This is providing, of course that the
>Standard Printing Time is accurate and not set greater than it
>should be-this would very easily cause a failure to achieve paper
>white or near paper white.
>
>Mark Nelson
>Purchase the eBook & System for Your Own Custom Workflow@
><http://www.precisiondigitalnegatives.com/>Precision Digital Negatives
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><http://www.markinelsonphoto.com/>www.MarkINelsonPhoto.com
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>
>
>In a message dated 12/27/04 4:34:41 PM, sanking@clemson.edu writes:
>
>>
>>Go to http://www.apug.org/forums/showthread.php?t=10922 and you
>>will find information on how to blend black ink with the colors on
>>the PDN palette to produce more UV density than is possible by any
>>combination of colors on the palette itself.
>>
>>
>>
>>
>>Sam Wang and I actually worked this out and made a working template
>>that allows you to change the UV printing density merely by
>>changing the opacity of the black blending pigment and I have
>>tested it myself so I know that it works. By varying the opacity
>>you can print with UV density ranging from about 2.3 up to as high
>>as 3.0 from digital negatives made with the Epson 2200.
>>
>>
>>
>>
>>I belive that blending black with the other colors of the palette
>>is a better approach than increasing the amount of ink that is laid
>>down because with some color the latter approach may result in
>>puddling and the dreaded pizza wheels.
>>
>>
>>
>>
>>
>>
>>
>>Sandy
Received on Tue Dec 28 15:27:47 2004