I have 2 LaserJets, a 4L and a 6P.
When printing multiple copies of a document, with "Collate" unchecked, the document is sent only once to the 4L, and it happily prints as many copies as I asked for as fast as it can.
But with the 6P, it doesn't matter whether "Collate" is checked or not, the document gets sent to the printer once for every single copy, which really slows things down if I need 50 or 100 copies of something graphics intensive. Send the document, print one copy, send document again, print one copy... you get the idea. So I get maybe 2 pages per minute from an 8 ppm printer.
What's up with that, and how do I fix it?