M404n waiting for 300 sec I/O Timeout when using PCL command... - HP Support Community

bjvidra · ‎10-20-2020

Our Proprietary Linux application has been using the same PCL codes for laser printers for 10-20 years. This new M404n printer doesn't seem to recognize the Reset command (<esc> E) as the End-Of-Job. The printer waits 300 sec (5 min) before it prints - or until another job is sent. If I change the I/O Timeout setting on the printer from the default of 300 sec to 15 sec, it waits 15 sec then prints.

Is there a PCL command this printer would accept as the End of the Job - and just print??

bjvidra · ‎10-20-2020

I have a client who just purchased 20 of these. Anyone familiar with PCL; does the <esc> &l0H work to eject the page on all HP PCL printers?

Repairatrooper · ‎10-20-2020

You might want to check the HP developer community as you may find an answer there.

https://developers.hp.com/community

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bjvidra · ‎11-19-2020

Verified it worked!
Add the null tray-select code to the normal termination code to eject the page immediately. Our string looks like this:

$1b &l0H $1b E
or
<esc> &l0H <esc> E

(PCL code for "Eject" , followed by standard printer "Reset" code)

M404n waiting for 300 sec I/O Timeout when using PCL commands

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