Western Blotting: What makes it take a long time?

[Daniel Kim]

Hello:

I was looking at different Western blotters.  We have conventional 
blotters with buffer tanks, and I have looked at graphite-electrode 
"semi-dry" blotters.  The advertising claims that the semi-dry systems 
can blot in a much smaller time.  

What is it about the semi-dry configuration that makes them so much 
faster?  Is it the distance between electrodes?  Is it the volume of 
buffer?  Is there some geometrical or electrical factor of which I am 
ignorant?

Where can I get this kind of information?

Thanks

Daniel Kim