Digital BW, The Print

Steadman,

Each driver will lay ink down differently. e.g. Epson have recently provided
new drivers for LF printers to reduce metamerism by laying ink down in a
different order - they now have the inks that are worst causes of m*
underneath the others. It just so happens this reduces quality of the prints
(!) - but also could effect longevity, for example, as the different ink
sitting on top could therefore fade differently!

There are also questions about dye inks. I believe it is said that dye inks
can mix during printing, which mixing can create unstable particles that are
more prone to fade. Hence, fading characteristics of 'dye mixes' are not
accounted for by many longevity tests as they test samples of 'cyan scale'
'magenta scale' etc... rather than real colours! I expect this is one area
that different companies test for longevity in different ways!

I welcome education!

Best,
Nij


> -----Original Message-----
> From: Steadman Uhlich [mailto:steadmanuhlich@...]
> Sent: 14 October 2001 15:59
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Re: A Call for Standards
> (Permanence/Stability)
>
>
> There you go.  All you have to do is use the same disclaimers as
> Epson. They should know right?
>
> What's Printer Engine got to do with it?
>
> Steadman
>   ----- Original Message -----
>   From: Mark Tucker
>
>   ** Ink lightfastness rating, based on accelerated testing of prints
>   on specialty media, displayed indoors, under glass. Actual print
>   stability will vary according to ink, media, printer engine, printed
>   image, display conditions, light intensity, humidity, and
>   atmospheric conditions. Epson does not guarantee longevity of
>   prints. For maximum print life, display all prints under glass or
>   lamination or properly store them. For the latest in lightfastness
>   information, refer to www.prographics.epson.com.
>
>   </snip>