Where are files generated by printer drivers stored in Windows 7? I mean the intermediate file generated by the printer driver when we click "Print".
The spooler and related bits reside in [Drive]:\windows\system32\spool.
I can't think of any other reason you'd ask this question offhand so I'll throw this out there - if you're specifically trying to clear out a print queue manually, empty spool\printers. Make sure you stop the spooler service before you do this.