Digital BW, The Print

I am a new user of image print. I am using an epson4800 and with IP 
6.1 and it prints wonderfully neutral b&w. I want to make some sepia 
prints and the tint utility in IP gives me exactly the amount of 
warming I want on the monitor (I keep my monitor calibrated) but when 
the print comes out the tint is barely noticable even with the tint 
turned up all the way in IP.
If anyone else has experience with this type of issue with IP I would 
love to hear about it!

Thanks,

Charlie