Digital BW, The Print

Paul,

You are right about the toner limitation for glossy with the UT1 inks 
and I have some UT2 inks on order from MIS, but I just wanted to see 
how this worked with the UT1 inks since I still have them loaded in the 
1270.  I did get somewhat higher dmax with Epson Pro Glossy (1.76) and 
even better with Ilford Smooth Pearl (2.04), using the same 92% curve 
limit at 100%.  However, when I printed a QTR warm curve (no toner) on 
the Pro Glossy the dmax dropped to 1.59 and the print showed bronzing 
and gloss differential as well.

Carl
On Monday, January 19, 2004, at 04:05  PM, Paul Roark wrote:

> Carl,
>
> The problem with this Eboni-glossy printing approach and the UT1 is the
> light toner.  In UT2 the coolness comes from an ink that is actually a 
> hair
> darker than the UT1 cyan.  That accounts for the dmax differences, I 
> assume.
>
> Paul
> www.PaulRoark.com
> _____________________________________
>
> -----Original Message-----
> From: Carl Schofield [mailto:scho@...]
> Sent: Monday, January 19, 2004 12:50 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Re: Glossy printing with Eboni -- who needs a
> 4000?
>
> Roy & Paul,
>
> I tried the UT1 inks with Eboni K in my 1270 using a neutral curve in
> QTR and printed to Epson Photo Paper.  The Eboni rubbed off and showed
> a gloss differential only in the 100% patch.  However, by applying a
> curve adjustment layer and limiting output at 100% I was able to get
> rid of the rub-off and gloss differential.  The "optimal" 100% output
> limit in terms of dmax was at 92% and there was no rub-off or gloss
> differential.  Print looked great with no bronzing either.  Dmax
> numbers (see chart below) were not that great but the blacks still
> looked good.  I did no spraying with Print Shield for these tests.  I
> wonder if more C position gray ink were laid down under the Eboni if
> dmax would be higher.  Roy, could this be accomplished with a higher
> GRAY-OVERLAP?  I was using 10%.
>
> Carl
>
> Curves 100% Ouput	D
> 90	1.64
> 91	1.64
> 92	1.65
> 93	1.631
> 94	1.614
> 95	1.609
> On Monday, January 19, 2004, at 02:42  PM, Roy Harrington wrote:
>
>>
>> Hi Paul,
>>
>> I'm curious just what you've got here.  Is it that this one specific
>> paper Smooth Pearl is somehow compatible with Eboni but
>> others aren't?    Or are you just not using the Eboni ink by making
>> the 100% spot just 100% R and G and 0% B -- i.e. the dark warm
>> gray and dark cool gray inks are enough to give a great dMax.
>>
>> Roy
>>
>> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
>> <paul.roark@v...> wrote:
>>> OK, this is a little half-baked, but the bottom line is that I've hit
>>> a dmax
>>> of 2.28 on Ilford Galerie Smooth Pearl - with Eboni.  There is not
>>> significant dusting or rub-off.
>>>
>>>
>>>
>>> The secret is that the UT2 (and perhaps UT1) inks use a base that is
>>> the
>>> glossy binder.  It's not an acrylic coating on the particle.  So, I
>>> don't
>>> let Eboni sit there by itself - or barely at all.  So, to the extent
>>> there
>>> is Eboni there, it is held by the base that carried the other inks
>>> into that
>>> spot.  The best dmax so far is with the yellow position sepia toner
>>> pulled
>>> out entirely at the 100% spot.
>>>
>>>
>>>
>>> Whether I can write full curves for this is untested.
>>>
>>>
>>>
>>> So, there is more to do here before declaring any kind of victory,
>>> but we
>>> may not need to mess with switching blacks any more.  Now that would
>>> be
>>> nice.
>>>