Re: crummy printers and gum

From: [email protected]
Date: 05/28/04-04:57:23 PM Z
Message-id: <>

Chris (Dances With Gum),

That's an interesting observation regarding gum printing with digital
negatives (Gum laughs at the density in a digital negative) since often I see
adjustment curves for digital negatives used with gum that have to clip the density
(and thus about 20% to 30% of the tone levels) in order to print.  Maybe I am
not understanding the meaning correctly.

Mark Nelson

In a message dated 5/28/04 9:28:20 AM, writes:

> Last summer I could never get this printer to make suitable negatives even
> with using a very dramatic contrast curve, because I was using saturated
> ammonium dichromate--way too powerful for crummy negatives that don't lay
> down enough ink.  I remember someone once saying a year or two or three ago
> that gum "laughed at" the density in a digineg.  This is what happened to
> me, too. With the lower dilution (1 tsp pigment mix which is a 14ml tube of
> pigment in 50 ml gum + 1 tsp gum arabic + 1 1/2 tsp water + 1/2 tsp
> saturated ammonium dichromate) they work.

Mark Nelson
Received on Fri May 28 16:57:49 2004

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