THERMAL PRINTER
ANY ONE WORKING ON A DRIVER BOARD ? David
Is there some specific thermal printer you are thinking about?
mg2999 on Youtube built a "driver board".[1]
Arduino software for thermal printer
Phillip Burgess. "Mini Thermal Receipt Printer". Tutorial at Adafruit. This tutorial shows how to directly connect the "TTL RS232" data interface on this particular printer to an Arduino. Then it shows how to program the Arduino using the Adafruit-Thermal-Printer-Library at Github to get print text, on-the-fly composed barcodes, and (hard-wired, pre-composed) arbitrary bitmaps.
ameyer (?). "Displaying on Paper – Thermal Printer + Arduino". Some discussion at the bildr forum.[2]
John Boxall. "Tutorial: Arduino and a Thermal Printer". Tutorial at tronixstuff. Also has good tips in the comments.