Print Server won't 'power up' printer

I've just bought a D-link DP-301P+ parallel print server.

Everything seems to work fine with my HP 970cxi printer except for two
things:

1) The ink statistics will not show - I'm not too bothered about this.
2) When any of the PCs on my network are first turned on and print to the
printer (which is still 'off'), the printer refuses to power up. If then
powered up by hand, it prints some gobbledegook. If the printer is then
powered down again, it will then manage to power up automatically and print
when sent a new job. It is only the first job from a newly-booted PC which
fails to turn the printer on correctly.

I realise that it's easy to simply turn the printer on manually and then
send the job but I can't trust the other members of my household to remember
this (I can foresee hundreds of sheets of gobbledegook and empty ink
cartridges).

I've checked my firewalls and tried both LPR and RAW settings in the printer
setup to no avail.

Any ideas?

TIA,

Kroma