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HP Printers Ready Message

April 1, 2008

I learned of a great way to bug people (or at least get a few weird responses) using an Printer Job Language-capable printer’s LCD display. Telnet to your printer on port 9100 (default) and send it the following commands:

\e%-12345X\@PJL RDYMSG DISPLAY=”INSERT COIN”
\e%-12345X

*I believe the \e% is interchangeable with ESC%, but I’ve only tested this on one printer.

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