Digital BW, The Print

Austin,

Try this quick test with Piezo inks. Creat a 1" square in photoshop 
and fill it with black. Print it using the Epson driver set to use 
black ink only. Print it again using the Piezo driver. To me the 
square printed with the Piezo driver looks a bit lighter which makes 
me wonder if the driver runs some of the lighter inks all the way 
into "0" density. Maybe it is a difference in the dither pattern. 
Maybe it's my eyes.

Let me know what you think.

Martin

--- In DigitalBlackandWhiteThePrint@y..., "Austin Franklin" 
<darkroom@i...> wrote:
> 
> > The tests were run in full grayscale mode
> > with the full ink sets in use. However, the results may be 
influenced
> > by how the different drivers run the 100% black that was used. 
From
> > some tests I did awhile back I believe that the Piezo driver may 
run
> > some or all of the lighter inks all the way into 100% black.
> 
> I do not believe that if you have an image that only has 0's and 
255's
> (which is the test image that Paul used, and he sent me so I 
verified that
> by looking at the data) that you should get ANY ink but black from 
ANY
> system, or the system is flawed IMO.