Digital BW, The Print

> Austin,
>
> I haven't a clue about the theory here but I have demonstrated to myself
> with the original Piezo and the new PiezoTone inks that the Epson driver
> produces a 100% level black square about 0.1 density units darker than the
> Piezo driver. Antonis reported that IP4 pushed the same ink about another
> 0.03 units darker than the Epson. So for whatever reason, the driver does
> play a practical role in the level of Dmax that is actually achieved.
>
> Martin

Hi Martin,

I assume you used the same inks with different drivers, right?

If that is true, then, IMO, the driver is done poorly.  Something is fishy
here.  I'll try a Piezo "black" and an Epson black, Epson driver using
simply the single ink Epson B&W output...as it'll simply give me black ink
only.

Another thing, were the test all printed at the same time, on the same paper
(same batch, and same image), with the same ink (meaning the EXACT same
ink), and done multiple times, and measured after the same amount of time
(preferably immediately)?  I know this sounds anal, but I have found SO much
variance in these damn inks...the same print, printed tomorrow, will have a
variance of .1 density units from the one I printed today!  I've also
noticed that the inks in the bottles aren't always fully mixed.  Sorry, this
stuff bugs me...

Regards,

Austin