Digital BW, The Print

Hi Walt

Yes, I have heard that generally people in the paper industry are very
impressed with Epson's ability to get their inks to collaborate with their
papers.  Makes sense to be able to have a full design circle.  Epson MK ink
is weak when it comes to non Epson papers and Eboni performs much better.
But of course the Epson AB&W driver is calibrated to their media.  If we
move away from Epson's closed design world it's good to know we have tools
such as QTR Create ICC to help us.

Also I really do suspect Epson has not targeted linear (L*) output with the
ABW driver but rather a curved response that reflects the linearization and
luminance scaling issues we have dwelled on for the last couple years.  Alas
I doubt we will ever know for sure...The good news now is that thanks to Roy
we can profile whatever it is.

Steve


> From: wwodets <odets@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sat, 22 Oct 2005 17:52:28 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] 2400 Shadow separation and linearity . . .
> 
> A friend has just sent me an unmanaged 51-step gray file printed from
> his 2400 and I compared it with the same target printed with my 2400.
> Both targets were printed on Velvet Fine Art, ABW Neutral (Darker).
> For the 90, 92, 94, 96, 98 and 100 steps the measured values are shown
> first for his printer and then in parentheses for my printer:
> 
> 19.46 (19.38); 17.67 (17.60); 16.63 (16.41); 15.53 (15.48; 14.36
> (14.47); 13.84 (13.83).
> 
> So, it seems to me that the consistency between these two inexpensive,
> uncalibrated printers is remarkable; and I would point out again that
> the shadow separation, linearity and D-max of this paper seems much
> better than anything else I have measured or than has been discussed on
> the forum over the past few days.  My corresponding figures for the HPR
> (VFA paper setting) are:
> 
> 18.39, 17.63, 17.14, 16.94, 16.69, 16.80.
> 
> Walt