Hi,
I am a VB.NET developer based in Australia. My specialty is POS.
I have extensive knowledge of the ESC/POS language used by receipt printers in the industry.
I already have a modified RawPrinterHelper class that successfully prints to an EPSON-TMT-88 that I have in my development environment. Currently it is printing several different sized fonts, as well as cutting the receipt.
I also have existing code that prints logos and barcodes on the receipt using ESC/POS.
The printers are capable of storing monochrome BITMAP images in their NVRAM (255 different images on most models). In my experience this is the fastest way for the printer to print the images, by sending an ESC/POS command to print image #x. Sending the actual BITMAP data to the printer (from file or a picturebox for example) takes A LOT longer, but I also have VB code than can do this.
As mentioned I have a printer for development and can deliver you a working solution fast.
I will supply a compiled test project for you to approve, and release the code on receipt of payment.
Look forward to hearing from you,
Caleb.