Digital BW, The Print

Alex,

On what is obviously a much shorter flight, I carried an Epson 1160
with a CFS and full bottles attached from Bangkok to Singapore (about
2.5 hours) as checkin luggage without any problems.

As long as the pressure can equilise on both sides of the ink you 
wont have any problems - this even applies under pressurisation.

As Scott mentioned I think you'll find cargo holds *are*
usually pressurised and heated as well - most commercial aircraft are 
connected (lifts, walkways etc) between cabin and cargo anyway so 
they would have to be pressurised

regards
Craig / Beijing