Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "Austin Franklin" 
<darkroom@i...> wrote:
> eMail me the square you made, and I'll print it out.  I have a 90x
> microscope, as well as an XRite 810 densitometer.  I can tell 
exactly what
> the printer is doing, and I'll let you know.  It will take me a day 
or so to
> do the test.  I happen to have one 3000 setup with Piezo inks, and 
one 3000
> setup with Epson inks, so I can make four test prints.
> 
> Pure black should only print using black ink.  Actually, it'll be 
better, I
> think, to do this test using the Epson inks...since you'd see color 
if the
> Piezo driver is in fact using any of the other inks, right?

Austin,

I sent the file. I printed it just with the Piezo inks using each 
driver in turn. Using the Epson inks with the Piezo driver might be a 
quick check to see if any other colors are used by the driver to 
print density 0.

Martin

> 
> > -----Original Message-----
> > From: Martin Wesley [mailto:mwesley250@e...]
> > Sent: Wednesday, October 10, 2001 11:38 PM
> > To: DigitalBlackandWhiteThePrint@y...
> > Subject: Re: [Digital BW] Piezography Review: Piezo v. Epson 
resolution
> >
> >
> > 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.
> >
> >
> >
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> >
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> >
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