QTR-Quadtone RIP

John

Thanks for responding.
The banding is horizontal & only in the 96-100% region. The Roark patches have a density 
that increases from1.54 to 1.68 looks quite normal. The QTR patches have a density of 
1.64 at 96% and it drops to 1.47 in the 97 -100%. All measured with Eye One.

Howard

--- In QuadtoneRIP@yahoogroups.com, "John Moody" <moodymz3@y...> wrote:
> Howard,
> Do both QTR and Roark's Curves patches have the same density in the 96 –
> 100?
> When you say banding, you mean the horizontal type associated with the print
> head?
> 
> John
> 
> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com]On
> Behalf Of steinbe2003
> Sent: Thursday, July 28, 2005 9:02 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] UT7Profiles-Banding & Irregularities in Deep Shadow
> Area
> 
> I am very new at this. I'm looking for help . I have
> been
> exploring QTR with UT7 inks on the 2200. There were two profiles provided in
> the
> QTR
> download for matte paper.
> 1)UT7-EEM_cool
> 2)UT7_EEM_warm
> I printed out some 29 step grayscales {standard 21 step with additional
> steps at
> either end
> to closely evaluate shadow and highlight regions). I printed these with
> various
> blends of
> cool and warm. They uniformly exhibited what appeared visually to be very
> good
> tonal
> separation. However there was one problem. In the 96% to 100% region there
> was
> severe
> banding as well as a lightening of the tone. Nozzle and alignment checks
> were
> performed
> prior to printing the grey scales.
> I printed the greyscales useing Roark's Curves and this problem did not
> occur. I
> would
> really like to continue with QTR. Has anyone encountered similar problems
> when using
> these profiles? Does anyone have suggestions as to resolving
> this
> difficulty? Any help will be very much appreciated.
> 
> Howard