Photopolymer Photo Gravure Press Questions

[Robert Newcomb <newcombr@uga.edu>]

Hello,
In regards to printing Photopolymer Photo Gravure, What does the size  
(diameter) of the upper roller have to do with a press's ability to  
print this plate?   Is it the amount of pressure that it can apply to  
the plate?
Also, is there a rule of thumb about how wide a press bed should be  
in proportion to the size work one wants to print?

thank you,

Robert Newcomb