RE: RE: Digital negatives for gum printing

[Larry Roohr <lrryr@home.com>]

Gord,

The standard drivers have color/contrast controls built in, but have a mind
of their own as well. For instance the Epson driver outputs to the printer
cmyk, but only takes in RGB, if you send it cmyk it will first convert it to
rgb, them input it to it's algorithm that again converts it back to cmyk
again, you have no control over how these conversions happen.

I'm a PC person but I believe the Macs are the same.

Larry
> -----Original Message-----
> From: Gordon J. Holtslander [mailto:holtsg@duke.usask.ca]
> Sent: Sunday, August 05, 2001 1:11 PM
> To: alt-photo-process-l@skyway.usask.ca
> Subject: RE: RE: Digital negatives for gum printing
>
>
> Hi:
>
> I'm trying to get a sense of what aspects of the images properties are
> a result of the printer itself and what is controlled by the printer
> software drivers.
>
> Do Mac and PC's have access to the same degree of control?
>
> My next goal is to try and do decent color gum with computer generated
> separations and/or computer generated false colored images.
>
> (I've promised to do a photomosaic cyanotype quilt first!)
>
> I've been using linux at work, I may try using it for separations. - there
> are a number of printing applications for linux - one system CUPS
> http://www.cups.org appears to offer a great deal of control offering
> different resolutions, paper surfaces and dithering methods.
>
> Is there anything in the standard print drivers that causes problems?
>
> Trying to figure out whether or not I should "jump into the deep end" and
> do this with linux, or stick to something everyone is familiar with.
>
> Gord
>
> ---------------------------------------------------------
> Gordon J. Holtslander		Dept. of Biology
> holtsg@duke.usask.ca		112 Science Place
> http://duke.usask.ca/~holtsg	University of Saskatchewan
> Tel (306) 966-4433		Saskatoon, Saskatchewan
> Fax (306) 966-4461		Canada  S7N 5E2
> ---------------------------------------------------------
>