Empty Documents

A document that renders as "No visual elements detected" was received in full and contained nothing to draw. That is often correct behaviour rather than a fault.

Jobs that legitimately print nothing

• Opening the cash drawer connected to the printer.
• Polling printer status before continuing a receipt.
• Triggering the buzzer, internal or external.
• Initialising the printer at application startup.

All of these are real jobs a real printer would also perform without moving paper.

When you expected output

• Check the protocol. ESC/POS data sent to an EPL printer, or the reverse, yields a document with no elements or a document full of errors. See Printer protocols.
• Switch on Raw Data for the document. If the bytes are there but nothing was drawn, the commands were understood and simply did not print; if the bytes are not what you expected, the problem is upstream in your application.
• Look for a red border, which means something failed to parse - see Document marked with an error.

Still stuck?

Email support@virtual-printer.online with the printer's protocol and port, what your application sent, and what you expected to see.