As far as I can tell there isn't a list of the printers anywhere. Here's mine, there's rumoured to be a ground floor on the ground level:

• In the attic (501, 502, 503):
  • lj5 - single sided 1 up
• In 451:
  • lj4 - single sided 1 up, there are two identical printers called lj4, which one it prints on is unknown ahead of time
  • lj4dup - duplex 1 up, uses the same printers as lj4
  • lj4hdup - duplex 1 up, but for short side binding, uses the same printers as lj4
• In 351:
  • lj3 - single sided 1 up, there are two identical printers called lj3, which one it prints on is unknown ahead of time
  • lj3dup - duplex 1 up, uses the same printers as lj3
  • lj3hdup - duplex 1 up, but for short side binding, uses the same printers as lj3
  • cp3 - colour printer, single sided?, 1 up
  • cp3a3 - colour printer, A3, 1 up
• In 251:
  • lj2 - single sided 1 up, there are two identical printers called lj2, which one it prints on is unknown ahead of time
  • lj2dup - duplex 1 up, uses the same printers as lj2
  • lj2hdup - duplex 1 up, but for short side binding, uses the same printers as lj2
  • cp2 - colour printer, single sided?, 1 up