Bluetooth Printing in Android


How do I print receipt with logo, transaction date, time, id, Product name and amount, also tabular data in Android ?
I am using this now. shohrabuddin/PrintingInAndroid
Able to print text but I am unable to print logo (converting image to byte array). It is printing some encrypted characters instead.
Another problem I am unable to give extra line spacing between 2 lines.

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