Mini Thermal Printer for Arduino Development Singlechip Learning

Print receipts, barcodes, QR codes and even bitmap graphics straight from your microcontroller.
This package comes with a thermal printer including the print head (it does not require ink), a set of power and data cables, and two plastic shims for panel mounting.
The printer uses very common 2.25″ wide thermal paper, available in any office or stationery supply store. It can fit up to 50 ft of paper in the bay at once.
You will also need a 5 to 9VDC regulated power supply, that can provide 1.5A or more during the high-current print
The back panel has 2 3-pin connectors; one for power and one for serial communications. The thermal printer ships with default 19200bps baud rate. If you’re using this printer in conjunction with an Arduino, you’re going to need to connect it to the “Vin” pin and attach an external power supply, as the printer will draw more current than USB is capable of delivering.
Documents:

Product Sheet
User Manual
Example Code
Bildr Tutorial
SparkFun GitHub
Adafruit tutorial
Adafruit Python Library

Package including
1 x Mini thermal printer
1 x Thermal Printing Paper Roll