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PKN and color printing

PKN and color printing

2005-03-04 by ccolbertbw

I am getting a very strong itch to switch to PKN and LKN, for
neutraility, for dmax, and for  the price. However, I do
 need to maintain the ability to print in color.

I am generally happy with the Atkinson profiles. Obviously, I won't
be using those, but will   make profiles with an eye-one.

Has anyone tried this already?  I would guess that the more neutral
black inks will mean  that the overall shift in ink will be towards 
yellow. In other words, there may be more  yellow ink laydown to 
warm the cooler blacks. Perhaps there won't be much 
additional yellow needed, but the idea of using a lot more yellow
seems like it could add  to metamerism, if yellow is truly the 
culprit there. Thus, the concern and the question.

On the other hand, maybe the more neutral Ks will make the
linearization easier.

TIA,

Costa

Re: [Digital BW] PKN and color printing

2005-03-04 by Daniel Staver

Like I've mentioned before I believe it's a myth that yellow causes 
metamerism. There has never been any proof that this is actually the 
case. People just assume that since QTR and Imageprint profiles don't 
use yellow and don't have metamerism, the yellow must be the cause of 
metamerism.

The culprit actually seems to be either the cyan or magenta inks, it's 
just that QTR and Imageprint profiles uses so little of those inks that 
it's no longer noticable. In comparison the Epson driver uses liberal 
amounts of all the color inks when printing BW.

--
Daniel Staver
http://daniel.staver.no


ccolbertbw wrote:
Show quoted textHide quoted text
> 
> I am getting a very strong itch to switch to PKN and LKN, for
> neutraility, for dmax, and for  the price. However, I do
>  need to maintain the ability to print in color.
> 
> I am generally happy with the Atkinson profiles. Obviously, I won't
> be using those, but will   make profiles with an eye-one.
> 
> Has anyone tried this already?  I would guess that the more neutral
> black inks will mean  that the overall shift in ink will be towards 
> yellow. In other words, there may be more  yellow ink laydown to 
> warm the cooler blacks. Perhaps there won't be much 
> additional yellow needed, but the idea of using a lot more yellow
> seems like it could add  to metamerism, if yellow is truly the 
> culprit there. Thus, the concern and the question.
> 
> On the other hand, maybe the more neutral Ks will make the
> linearization easier.

Re: PKN and color printing

2005-03-04 by Carl Schofield

I have made the switch to PKN and LKN in my Epson 4000.  I just re-profiled my papers 
with the eye-one and colors are fine, no major shifts or metamerism.  Color prints look 
identical to earlier ones made with Epson PK and LK inks.

Carl


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "ccolbertbw" <ccolbert@u...> 
wrote:
Show quoted textHide quoted text
> 
> I am getting a very strong itch to switch to PKN and LKN, for
> neutraility, for dmax, and for  the price. However, I do
>  need to maintain the ability to print in color.
> 
> I am generally happy with the Atkinson profiles. Obviously, I won't
> be using those, but will   make profiles with an eye-one.
> 
> Has anyone tried this already?  I would guess that the more neutral
> black inks will mean  that the overall shift in ink will be towards 
> yellow. In other words, there may be more  yellow ink laydown to 
> warm the cooler blacks. Perhaps there won't be much 
> additional yellow needed, but the idea of using a lot more yellow
> seems like it could add  to metamerism, if yellow is truly the 
> culprit there. Thus, the concern and the question.
> 
> On the other hand, maybe the more neutral Ks will make the
> linearization easier.
> 
> TIA,
> 
> Costa

Re: [Digital BW] PKN and color printing

2005-03-04 by ccolbertbw

Point taken. if so, then more neutral K inks might actually help by
limiting C or M that is there to neutralize the warm Ks.

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Daniel Staver <daniel@p...> 
wrote:
Show quoted textHide quoted text
> Like I've mentioned before I believe it's a myth that yellow causes 
> metamerism. There has never been any proof that this is actually the 
> case. People just assume that since QTR and Imageprint profiles don't 
> use yellow and don't have metamerism, the yellow must be the cause of 
> metamerism.
> 
> The culprit actually seems to be either the cyan or magenta inks, it's 
> just that QTR and Imageprint profiles uses so little of those inks that 
> it's no longer noticable. In comparison the Epson driver uses liberal 
> amounts of all the color inks when printing BW.
> 
> --
> Daniel Staver
> http://daniel.staver.no
> 
> 
> ccolbertbw wrote:
> > 
> > I am getting a very strong itch to switch to PKN and LKN, for
> > neutraility, for dmax, and for  the price. However, I do
> >  need to maintain the ability to print in color.
> > 
> > I am generally happy with the Atkinson profiles. Obviously, I won't
> > be using those, but will   make profiles with an eye-one.
> > 
> > Has anyone tried this already?  I would guess that the more neutral
> > black inks will mean  that the overall shift in ink will be towards 
> > yellow. In other words, there may be more  yellow ink laydown to 
> > warm the cooler blacks. Perhaps there won't be much 
> > additional yellow needed, but the idea of using a lot more yellow
> > seems like it could add  to metamerism, if yellow is truly the 
> > culprit there. Thus, the concern and the question.
> > 
> > On the other hand, maybe the more neutral Ks will make the
> > linearization easier.

Re: PKN and color printing

2005-03-04 by ccolbertbw

Thanks, Carl. That's just the info I was hoping for.
Costa

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Carl Schofield" <scho@m...> 
wrote:
Show quoted textHide quoted text
> 
> I have made the switch to PKN and LKN in my Epson 4000.  I just re-profiled my papers 
> with the eye-one and colors are fine, no major shifts or metamerism.  Color prints look 
> identical to earlier ones made with Epson PK and LK inks.
> 
> Carl
>

Re: PKN and color printing

2005-03-04 by John

Hello Carl,

I have checked MIS website regarding PKN and LKN but only PKN is 
mentioned, nothing about LKN.

Please direct me to the link as I am interested to test the LKN too.

Thanks

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Carl Schofield" 
<scho@m...> wrote:
> 
> I have made the switch to PKN and LKN in my Epson 4000.  I just re-
profiled my papers 
> with the eye-one and colors are fine, no major shifts or 
metamerism.  Color prints look 
Show quoted textHide quoted text
> identical to earlier ones made with Epson PK and LK inks.
> 
> Carl

Re: [Digital BW] Re: PKN and color printing

2005-03-04 by Carl Schofield

John,

LKN is the UT7 LK.  
http://www.inksupply.com/index.cfm?source=html/ut7_2200.html

Carl
Show quoted textHide quoted text
On Mar 4, 2005, at 2:05 PM, John wrote:

>
>
> Hello Carl,
>
> I have checked MIS website regarding PKN and LKN but only PKN is
> mentioned, nothing about LKN.
>
> Please direct me to the link as I am interested to test the LKN too.
>
> Thanks
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Carl Schofield"
> <scho@m...> wrote:
>>
>> I have made the switch to PKN and LKN in my Epson 4000.  I just re-
> profiled my papers
>> with the eye-one and colors are fine, no major shifts or
> metamerism.  Color prints look
>> identical to earlier ones made with Epson PK and LK inks.
>>
>> Carl

[Digital BW] Re: PKN and color printing

2005-03-04 by John

"Light Black Position - LK (custom light black)" suppose to be LKN.

Thanks.

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Carl Schofield 
<scho@m...> wrote:
> John,
> 
> LKN is the UT7 LK.  
> http://www.inksupply.com/index.cfm?source=html/ut7_2200.html
> 
> Carl
> 
> On Mar 4, 2005, at 2:05 PM, John wrote:
> 
> >
> >
> > Hello Carl,
> >
> > I have checked MIS website regarding PKN and LKN but only PKN is
> > mentioned, nothing about LKN.
> >
> > Please direct me to the link as I am interested to test the LKN 
too.
> >
> > Thanks

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