Windows opens a connection to the printer share.

Samba must authenticate the user.

Windows sends a copy of the print file over the network into Samba's spooling area.

Windows closes the connection.

Samba invokes the print command to hand the file over to the UNIX print subsystem's spooling area.

The UNIX print subsystem processes the print job.

The print file may need to be explicitly deleted from the Samba spooling area. This item depends on your print spooler configuration settings.