1 Question mark and small circle

Using epson m-295 receipt printer. Intermittently the printer prints ?’ before data.

Unusual printer, what you using it for?

I’ve had the ? On first line before with cheap China 58mm printers, never got to bottom of it as stopped using 58mm printers anyway.

It is being used to print scale data. I get the feeling it is an error code. But it doesn’t happen all the time.

From what I understood at the time, it’s something to do with initialisation, I think I got it on first ticket of the session/day.
I stopped using those printers so never got to bottom of it.

I think you are right. Thanks