QTR-Quadtone RIP

I believe I just got to the bottom of it. Photoshop (it seems) does  
all of the grunt-work when it comes to pure color management. That's  
because it's been around since before OSs had any color management.  
So when you print a big'ol image it's actually doing a hard- 
conversion of that file to the out-put profile and then sending that  
data along to the print driver. (Thus all the time it takes to  
print.) All the print driver has to do is send the data to the Printer.

Lightroom, on the other hand, tags the image with the profile and  
lets the print driver handle the conversion. I think that is where  
it's getting sticky. This explains why I was having such a hard time  
with the old Spro9600 drivers when printing color. They just couldn't  
handle the profile conversion themselves. The driver expected a  
converted file.]

It also explains the slight lag between finishing a file rip in  
Lightroom and seeing it come up in the print queue.

Can QTR handle ICC profile conversions? And is it v4 compliant? Most  
likely more and more applications will come out soon that will  
require OS and Driver color management instead of doing all the work  
themselves. It makes everything faster and more scaleable.

The nice thing is the Adobe CMM is open source and available to use  
for such a thing as driver-based ICC conversions.

take care, Walker