Bluetooth printing can not set the font size, print pictures garbled

If the title is now correctly print Chinese alphabet symbols, but can not change the font size, so trying to convert text to picture, but the picture is playing out garbled, please help to solve it.

 
ByteArrayOutputStream baos = new ByteArrayOutputStream (); 
b.compress (Bitmap.CompressFormat.PNG, 100, baos); 
byte [] bytes = baos.toByteArray (); / / print images directly into bytes after garbled 

mmOutStream.write (0x1b); 
mmOutStream.write (0x55); 
mmOutStream.write (0x06) ;/ / set the font enlarged six times ineffective 
mmOutStream.write (bytes); 

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Reply:
Seeking advice, seeking attention
Reply:
Although I do not know why I'm still under reply
Reply:
There is no solution landlord, share