Digital BW, The Print

As Antonis mentioned previously earlier, I think that one key to getting
bronzing under control is careful attention to ink load...specifically how
much combined ink is hitting the paper at a given density.  While we have
seen effects of this in the matte papers (I'm specifically thinking of the
midtone mottling that Paul Roark and others have seen with Museo using the
Epson driver) I think the gloss papers may be even more critical in this
regard.  With Inkjet control we have more control of this; however, because
you are only using two gray inks with the Ultrachrome/2200 solution you may
not be able to get there for every paper.  I think with an additional gray
(in the Ultratones) there will be more potential with the gloss papers.

Robert

On 4/20/03 1:03 PM, "Carl Schofield" <scho@...> wrote:

> Thanks Antonis.  A couple of coats of Krylon does reduce the bronzing,
> but it does not completely eliminate it and I don't particularly care
> for the surface appearance.  I do like the higher dmax but can't get
> past the bronzing problems with the UC inks on RC papers so I'll
> sacrifice a little dmax for higher overall quality with the matte
> papers.
> 
> Carl
> 
> On Saturday, April 19, 2003, at 02:38  PM, Antonis Ricos wrote:
> 
>> Carl,
>> 
>> I haven't played with this combo at all - but I have seen prints with
>> similar
>> Epson papers that bronzed and I simply gave them a coat of good ol'
>> Krylon
>> which made it go away. I realize this is less than ideal for all sorts
>> of reasons
>> but I haven't  profiled this to know of a sure fix.
>> 
>>  Perhaps a different mix of black and gray?... (more PK, less gray). I
>> am
>> guessing that the gray loads the paper too much when it  hits a peak
>> in the
>> mids, while the black works fine even at 100%. Something to consider...
>> 
>> 
>> Antonis
>> 
>> 
>> 
>> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Carl Schofield
>> <scho@m...> wrote:
>>> Just started working on IJC profiles for Ilford Smooth Pearl using the
>>> Epson 2200 with OEM/UC inks (Photo Black).  Tones are fine but there
>>> is
>>> severe bronzing that appears primarily between steps 15-20 (56-76% on
>>> a
>>> step-wedge) when the print is viewed at an angle.  The upper and lower
>>> sections of the step wedge show no bronzing.  This is with a 50/50
>>> blend of a cool and warm profile.  It appears that the light black ink
>>> might be the culprit causing the bronzing.  I'm using only black and
>>> light black for the warm profile and the same plus light cyan and
>>> light
>>> magenta for the cool profile.  Any suggestions for minimizing the
>>> bronzing would be appreciated.
>> 
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