Can be useful to distinguish when a print job was submitted from when it was actually received by the printer. That distinction matters when printers go offline and jobs get queued.

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ssl-3 a day ago | parent [-]

Is it possible or practical to examine a printer's internal queue for jobs that might include this (completely optional) CreationDate field?

If not, then: I'm not sure that the distinction means anything. :)

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olalonde a day ago | parent [-]

Yes. Many printers have a web interface where you can see active jobs, job history, timestamps, and document information. Some even have a physical control panel that lets you inspect this information directly from a touchscreen.

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ssl-3 a day ago | parent [-]

Right. But none of that comes from the CreationDate field of a postscript job.

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olalonde 19 hours ago | parent | next [-]

Seems you learned a lot about printers since asking your question.

By the way, it's mentioned in a number of printer manuals, so it's definitely used, e.g.: https://www.scribd.com/document/899003124/Magicolor-2200-use...

	▲	ssl-3 4 hours ago \| parent [-]
		Which part of that manual relates to a CreationDate field within a postscript print job? I'm not seeing it.

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arcfour 20 hours ago | parent | prev [-]

Are you sure? I would be more surprised if it did not come from there, if the field was present at all. You're already processing the PostScript... Might as well use the metadata.

	▲	ssl-3 19 hours ago \| parent [-]
		I'm sure that every print queue I've ever used didn't appear to care a lick about the content beyond acceptance. It's a buffer, not a processor.