Digital BW, The Print

BTW if anyone is interested in making a more accurate soft proof for their
B&W work I used Colorlab to make a 256 step test chart and corresponding
reference file which Eye One Match can use (Carl's method).  The EyeOne
scans the chart easily and quickly.  Let me know if this is something that
should be posted in the files section of the group.

In playing with this I noticed something which puzzled me.  When I look at
the test chart tiff in PS it is obviously the data I told it to be: equal
RGB steps (Lab a*=b*=0).  When I assign the profile generated by Eye One
Match the a* and b* of the patches alter (looking in the info palette),
reflecting the colour in the inks used to print the test chart, but for all
steps R=G=B still.  I guess it is because I assigned the profile thereby not
altering the RGB file info but "giving it meaning" with the profile.  That
meaning is reflected in  the Lab info.  That is, for example, patch RGB
80,80,80 with the profile means Lab 39,4,-3.


> From: Ernst Dinkla <E.Dinkla@...>

 
> Yes, the B&W driver may be less sophisticated than I figured out it
> could be.
> 
> BTW I'm not familiar with the R1800 driver but in the 4800 driver there
> are two B&W modes, Advanced B&W and what they simply call Black. It
> would be very inappropriate if the last isn't Black Only printing. 180
> nozzles at 3.5 picoliter and possibly 8 pass like the 10000 firmware
> upgrade had must deliver a nice BO print. Clayton are you there ?
> 
> I do not see the same option in the 2400 driver. Nor am I able to get to
> Advanced B&W in that driver but I have little time right now.
> 
> Ernst
>