Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "zisskar"
<ziskar@...> wrote:
>
...
> 
> Tyler, what do you mean with single channel icc profile?

icc profiles are generally color, so single channel profiles are rare,
or at least newish. RGB is 3 channels, CMYK is 4 channels, B&W or Gray
is 1 channel. A channel for every color.

> Is it like a
> dot gain profile that can be embedded on a grayscale image?

It can be, Roy's profiler is measurement based and essentially work on
the luminance channel. It amounts to the same thing in the end.

> Does this
> method utilizies only the 3 K inks? 

The profile does not (in this case) determine which inks are used, the
driver does that.
These profiles are simply making your tones behave properly from paper
white to ink black, like a correction curve applied to the file on the
fly while handed off to the printer.

Tyler