On Tue, 21 Oct 2003, Rick Cochran wrote:
RC> One kludge we have had to use here on Lexmark printers and the HP 8550 RC> is to use SNMP to read the printer's front panel display to see if it RC> says "Ready" (or "Warming up", etc.). This is because the SNMP status RC> variables will say that the printer is idle before the page counter RC> clicks.
And this will fail if you switch language on the printer to, for example, Swedish.
Possible changes in the language on my printer are not at the top of my list of concerns.
As I review my notes, I find that I have mischaracterized the problem slightly. The problem is that if you have a small (in bytes) print job, the entire job can end up getting transferred to the printer before the printer starts printing (ie. paper moving). If you are using the usual SNMP variables to determine whether the printer is "idle" before doing the second read of the page counter, you will be fooled into reading too early because these SNMP variables respond only to paper movement.
The front panel display, on the other hand, changes immediately when the printer starts to receive a job.
This is a problem for both Lexmark and Xerox printers, not for HP (except for the HP 8550).
How do you solve this problem?
-Rick
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