windose server Print server

sizeon

When clients map printers from a print server, the client is using the print server's spooler, correct?

phoeneous

Technically both the client and the server but yes, the servers spooler is involved. Quick way to find out is to stop the servers print spooler service.

Qord

Wait...when actually mapping the printer or when printing something?

If you're talking just printing, then as above, both client and server spooler are used. Old, but still relevant:
How Network Printing Works: Network Printing