Digital BW, The Print

Op 29-11-2010 14:57, Roger Barrett schreef:
>
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com,
> "John"<jrnolly@...>  wrote:
>
>> These papers are still available from Ilford--look for the
>> "Classic" papers.
>>
> I used the Ilford Classic for several years with the Lyson QuadBlack
> (dye) inks in an Epson 1160 and was very pleased with the results.
> Prints on my wall still look new after 5+ years. Unfortunately it
> seems that Ilford have now discontinued these papers except in A4.
>
> Although I was very pleased with my dye-based B&W they did suffer
> from some metamerism. I thought that this was a generic problem for
> dyes because black dyes begin to transmit in the deep red and become
> almost transparent in the infrared. This was certainly true of the
> Lyson inks which had a slight red cast in low-temperature tungsten
> illumination. Are the dyes being talked about here immune to this
> problem?

The Lyson dye inks had that problem. The Small Gamut and Lysonic color
inks too. It isn't dye related in my opinion, more Lyson related.

For color inksets it is more difficult to create prints that keep color
constancy with different lightsources if the inkset is based on CMYK
only or CcMmYK and no extra grey inks aboard that can substitute
composite greys (CMY greys) with grey ink mixes. Dye inkjet printers are
usually limited to 4 or 6 inks (exceptions exist) so have a disadvantage
there. That Lyson couldn't get it right with the Quad and Small Gamut
dye inks is another story.


-- 
Met vriendelijke groeten,   Ernst

Try: http://tech.groups.yahoo.com/group/Wide_Inkjet_Printers/

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