To print your logo on the A4-invoices, simply copy your logo to the 4POS folder with a name called 4POSLogo.bmp Obviously you need to play around with the sizing etc.....
To print your logo on your receipts, simply copy your logo to the 4POS folder with a name called 4POSLogoslip.bmp Obviously you need to play around with the sizing etc.....
Also, on your receipts, ensure you have the proper driver loaded & your configuration in 4POS :
On 4POSScan - Ctrl-C
On 4POSTouch - Option Menu - Ctrl-C
Then : Option 3 "Print Graphics" is ticked & "Print Logo" is ticked.