How to print from iOS device angular app to QLn420 printer through Bluetooth

// Expert user has replied.
J Joe Lee 2 years 5 months ago
204 1 0

I have an angular app host in iOS hand held device (e.g. iPhone). This app should print out the receipt to remote printer (e.g QLn420) by using Bluetooth connection between iOS device and printer. Is there any Lib or service can do this kind of printing? Thanks.

+--------+ +-----------+
| iOS | Bluetooth | Printer |
| +<----------------------------->+ |
+---------+ +-----------+

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