Print uses the computer's own Bangla text, sharpest result. In the print dialog you can also choose “Save as PDF”.
Typing tips
ami banglay likhi → আমি বাংলায় লিখি
sOnar → সোনার krriShok → কৃষক
Pick a different spelling with ↑ ↓ and Enter, or tap it. Esc keeps the English word. Ctrl+M switches Bangla / English.