Printing logo on Generic / Text only printer is different then using Windows printer type, as it cannot use your company logo.
Uploading a bitmap to your printer
In order to print logo in receipt, you need to upload it to your printer by using your printer printer utilities. It is often called "NV Bitmap utility".
These utilities may look similar to the one below.
If you can find this tool within your printer driver files, please consult your manufacturer documentation and/or a retailer, as there may be a different way to upload a bitmap to the printer.
Enable logo printing
Once you have it uploaded, all you have to do is make sure that "Print bitmap" option is turned on, as described athttps://help.aronium.com/hc/en-us/articles/115003405831.