Logo shows in preview in the template editor ok. Windows test print prints fine with logo.
File is copied to correct location on all machinesand tested in editor.
When printing receipts though only the filename prints instead of the image, affects all printers (all different brands). All printers are Windows printers.
First few lines of my receipt template, have tried numerous case sensitive options;
Also if using thermal printer your best to convert down to 1bit colour and resize as larger with colour will slow down the print speed for that part of print.
If your printer supports importing the logo into the printer memory then yes you could if the software accepts .PNG
if you use generic/text only printer as the driver without software, than you can only use the .BMP within the printer template.
Most thermal printers come with their own management software, which will give you option to input logo into it, and automatically on print, it will put your logo in the header, and they usually support .PNG