Digital BW, The Print

I don't know if it's the glycol or something else that causes the initial
changes.  What I notice regularly is that the dmax increases slight on matte
papers the next day, whether or not I've used a hair drier on the sample.  I
usually don't see much density change in the 50% patch, however.  There I
sometimes see a tone change the first day.  After the first day or so,
things usually seem relatively stable with matte papers.  So, I thought that
waiting a week before the fade test would take care of whatever is causing
these initial effects, but perhaps not.

Paul
www.PaulRoark.com 


> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of
> dlruckus
> Sent: Friday, December 30, 2005 12:06 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: On Paul's MIS vs. K3 fade tests . . .
> 
> I too have observed this. It seems to be the rule rather than the
> exception in my case.
> 
> Regards
> Duane
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, hogarth@s... wrote:
> 
> > >
> > It's conceivable that the increases in density seen early on are the
> > result of driving off the last of the glycols and glycerins. Even
> > moderate levels of light can increase the temperature of the print.
> > Increasing the print temperature helps these ink base components
> dissipate.
> >
> > I say this because I've noticed a fairly marked improvement in Dmax on
> > my prints when I dry them with a hairdryer. Even days later - you can
> > smell the glycols coming off the print and see the Dmax increase. For
> > reference I'm using PiezoTones mostly on HPR. I've seen the same effect
> > when drying UltraChromes however - not as marked, but a subtle increase
> > in Dmax and a slight increase in gamut.
> > --
> > Bruce Watson
> >
> 
> 
> 
> 
> 
> 
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