Spooling - Océ imagePRESS C7010VPS series Technical Manual

Spooling

Besides providing information from the LP print queue, the printerlpd also provides information
about the printer's spool queue which contains all jobs that are processed (spooling, spooled or
ripping). When a job is fully ripped it will not be accessible and visible anymore via the LP
interface. The print jobs will be visible and manageable via the 'Scheduled jobs queue' or
'Waiting jobs queue'. These print jobs may also originate from other network interfaces than the
LP interface, for example Socket.
lpr
LPD
lprm
lpq
User's host computer
LP client / LP server
[4] LPD workflow
The printer provides only LP server functionality; no LP client functionality. The printer acts as a
passive station that waits for requests from remote users or systems.
The use of LPD is bound to the use of the TCP/IP networking protocol stack, or, more specifically
to the use of the TCP protocol. The printer-specific lpd server uses the well-known TCP port 515
for communication with the client system.
imagePRESS C7010VPS series v2.2
LPD LPD
lpd lpd
LP LP
printqueue printqueue printqueue
Zero or more
intermediate
spoolers on other
host computers
ocelpd
LP
SPOOLqueue
Océ printer
LP server
Chapter 3 - The LPD connection
Spooling
33