You only need to measure density if you want to create new curves or
significantly modify existing curves and want to linearize them. You can
measure ink density with a densitometer or a scanner. The scanner would be
less accurate, but might suit your needs quite well. You would need a
reflection scanner of course, as opposed to a film scanner.
> I'm brand new to printing and QTR, which I want to use to print sepia
> tones and BO method with my 2100-Epson inks.
You don't need QTR to do BO printing. You would for variable toned printing,
though. There are quite a few UC curves available for the 21/2200 printer
for a variety of papers. You might want to try these with the Epson black
first to get a benchmark for comparing with the Eboni.
>
> I have just downloaded QTR and I'm going through the user guide. The
> section on ink density calibration indicates that I need a densitomer.
>
> What the hell is it? Is it necessary? Is it going to cost alot?
As it's name suggests, a densitometer measures ink density after printing.
You can get a used xrite 810 for around $200(US) - often on ebay. As I
stated above, a scanner can do quite nicely, if you have one.
>
> Different question (sorry)..if I buy MIS eboni black cartridge, can I
> continue using the other Epson inks and only substitute the black or
> will the printer not function with the 2 different ink types?
>
I haven't tried printing with Eboni and UC colours. It would work as far as
the printer is concerned. The question is whether the existing curves that
use Epson K would loose their effectiveness. Someone else may have tried
this and may respond. Using the Eboni would likely throw off the profiles
you use for colour printing of course.
> Thanks in advance.
>
Hope this helps
Tom Moore