HP printer problems

We have 4 HP 4100n printers on the HP tcip network. They print fine from win95 NT4.0 2000, and XP, however from all of our win98 pc’s we have a problem. From win98 they will only print 4 to 5 pages of a large doc. I have talked to HP tech support and they can not figure it our. Any one have any ideas why this is happening only on our win98 computers???