Most printing-related Registry settings reside in the following subkey:
An administrator can use the Registry Editor to assign read-only access to these subkeys. Users with read-only access cannot add or configure printers, because the read-only access does not allow changes of these subkeys.
Windows-based applications also use the following subkey in the Registry to find information about available printers.
Users with read-only access to this subkey cannot add new printers that are recognized by Windows-based applications.