Océ imagePRESS C7010VPS series, Техническое руководство

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LPD behaviour
LPD behaviour
Reception and queueing of the received print job
Jobs sent by the users are received by the printer and spooled. Multiple jobs can be received in
parallel. At this state, jobs are visible via lpq and removable via lprm.
Job visibility
The spooled jobs are submitted to the PDL data processing module one at a time, in FIFO order.
The PDL data processing module generates bitmaps for each submitted job.
When a job is fully ripped by the PDL unit it is removed from the Spool queue, and then will not
be visible through lpq or removable through lprm. On the imagePRESS C7010VPS series, the job
is visible on the local user interface as soon as spooling starts.
Mapping of lpd jobs to requests
An LPD job can consist of multiple files. Each file in an LPD job will result in a separate request on
the IBB. This makes each file visible in the mailbox as a separate document.
This allows a user to manipulate each document individually on the system console (print,
delete, ...).
File size status
The file size information provided by lpq command represents the amount of data spooled on the
printer for a given job.
Two situations can occur:
• A PDL file is sent.
The size returned by lpq is equal to the size of the sent file.
• A job that contains a job ticket data and PDL data is sent.
The size returned by lpq is the size of only the PDL file. This is because the job ticket is not
spooled on disk.
Ports
This section describes which network traffic must be allowed for supporting the LPD protocol.
LPD ports
Protocol Source port Destination port Direction
TCP Any 515 Incoming
TCP 515 Any Outgoing
Job reception disabled
When the LPD job reception is disabled, the LPD will no longer accept new jobs, but it will
respond to lpq and lprm requests. The controller status as reported by ‘lpq’ will indicate that
reception is disabled.
LPD behaviour
Chapter 3 - The LPD connection 43
imagePRESS C7010VPS series v2.2