Digital BW, The Print

They are all standard ICC profiles.  The ICC spec defines three major types of
profiles -- CMYK, RGB and Gray.  For all printing profiles the type of the profile
MUST match the type of the driver.  So CMYK profiles MUST use a CMYK driver,
RGB profiles must use an RGB driver and Gray profiles MUST use a grayscale
driver.  By far most of the ICC profiles out there are RGB profiles to be used with
the RGB Epson driver.  There are a few color RIPS that are CMYK and use CMYK
ICC profiles.  

Grayscale, by and large, has had very little presence.  A RIP such as the QTR driver
and the Epson ABW (Advanced Black & White) are true grayscale drivers.  This 
means their input is pure single channel grayscale -- any toning is done in the
driver NOT in the input file.  These will require using a grayscale ICC profile.
QTR-Create-ICC is, as far as I know, the only ICC profile maker designed 
specifically for such a grayscale driver.  This brings full color management 
capability to grayscale drivers -- softproofing and printing.

There is one other issue with grayscale handling.  Some editing, image processing
programs thenselves do not handle grayscale image files.  This includes some 
majors ones like: InDesign, Lightroom, Aperture and Qimage.  So although the
grayscale profiles are ICC standard the programs do not recognize and support 
them.  For this reason there is a variation called QTR-Create-ICC-RGB which
still creates an ICC profile for grayscale printing but uses an RGB ICC format.
They are NOT color profiles -- they just use the RGB format so that the programs
that only recognize RGB can use them. 

So the final answer for InDesign is to use the same procedure for custom ICC
but use the QTR-Create-ICC-RGB program to create the profiles.

Roy


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 5/29/07 12:11:52 PM, e.neilsen2@... writes:
> 
> 
> > I suppose then it Paul is that needs to let you know why the profiles are
> > not being seen by In Design. I have not used his profiles nor downloaded
> > them so I don't know what they are for sure. Profiles made by PFP are seen
> > and used in both CS and CS3 versions.
> > 
> 
> CreateICC profiles are not standard ICC profiles, as PrintFIX PRO profiles 
> are, and will not be usable in all applications, or editable by all profile 
> editors. If we spoke of them as "curve sets in a profile shell", it would make it 
> clearer, but they are usually just called "profiles".
> 
> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com
> 
> 
> **************************************
>  See what's free at 
> http://www.aol.com.
> 
> 
> [Non-text portions of this message have been removed]
>