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Re: [Digital BW] NanoChrome QTR Printing

2006-01-21 by Carl Schofield

Shilesh,

You probably noticed that the K ink is also an icy cold blue.  I  
tried using it for BO printing in the PK slot of my 4000 (other slots  
are using piezotones right now) and got some very nice looking BO  
prints on Hahnemule Photo Rag Satin (dmax 1.93) with no bronzing or  
GD, but the icy blue hue is just too much for me.  If this cold hue  
of the black inks can be effectively neutralized in QTR then I may  
switch over to the full inkset.

Carl

On Jan 21, 2006, at 1:31 AM, Shilesh Jani wrote:

> Hello All,
>
> This is not about whether these inks are dye, pigment, infused, or
> not. I am intersted in printing b/w on rag and sometimes RC papers
> using a single color inkset. I currently use a 4000 with OEM UC inks
> for b/w (90%) and color (10%) prints. My reasons for exploring
> NanoChromes (1) I just like to play with inks, (2) get better Dmax on
> matte papers, and (3) be rid of the pesky gloss differential/bronzing
> on RC papers.
>
> QTR is an awesome tool - thank you Roy Harrington!
>
> The challenge posed by the NanoChrome inks is the relatively
> cool/blue tone of the grey (LK) ink. My experiments are conducted on
> an R220 printer. I filled the LK ink in the redundant C position.
>
> In QTR ink configuration, I have been able to neutralize to a great
> extent this problem. For EPSG paper the settings that work are:
> Default limit = 80%, NO K boost
> LK Density = 30
> Y Copy Curve from LK, limit = 6%
> LC Copy Curve from LK, limit = 2%
> LM Copy Curve from LK, limit = 20%
>
> After linerarization, the prints on EPSG, EPG, and Kirkland papers
> are, well, stunning! My prefered paper is EPSG. Dmax is in the 2.4
> range.
>
> The fade resistance of these remain unknown, so I am waiting a bit
> more before loading these inks onto the 4000.
>
> Regards.
>
> Shilesh

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