Printer Lab supports ESC/POS protocol enabled bluetooth thermal printers. prints text you typed or from external app. prints QR code, barcode. prints images from camera or album. prints RSS feed. get events from Google calendar and print it.
Download the free setup package of Printer Lab 0.1.7 and take a look at users' reviews on Droid Informer. The app runs on Android devices 5.0 and higher. It's safe to download this application. Tortuga is the developer of the tool which can be found in the Lifestyle category.