The Rongta F12D is a portable thermal printer designed for personal daily use, mobile office work and home education. It supports document printing on A4, A5, B5 and US Letter paper, as well as various paper sizes, including rolls, folded paper and single sheets. It uses direct thermal printing technology, with a resolution of 203 dpi and a maximum printing speed of 16 mm/s. It is equipped with a 1500 mAh battery, allowing it to print up to 185 US Letter sheets on a single charge. 

Technical specifications

Printing method: Thermal line dot printing

Maximum print width: 208 mm

Resolution: 203 dpi

Maximum printing speed: 16 mm/s

Paper formats: US Letter, A4, A5, B5, 4", 3", 2"

Paper types: Roll paper, folded paper, single sheet paper

Maximum paper width: 216 mm

Paper thickness: 0.055–0.09 mm

Maximum roll outer diameter: 30 mm

Interface: BU (as specified by the supplier)

Screen: No

RAM: 192 KB

FLASH memory: 1 MB

Paper tear bar: Supported

Buttons: POWER button for power on and self-test page printing

Reset: Pinhole reset

Compatible operating systems: Windows, macOS, Linux

Mobile applications: iOS, Android

Power input: 5 V, 2 A

Battery: 7.4 V, 1500 mAh

Charging time: Maximum 2 hours

Printing endurance: Up to 185 US Letter sheets

Standby endurance: Up to 56 hours

Print head lifespan: 10 km

Available colors: Dark gray, white

Dimensions: 267 x 81 x 46 mm

Weight: 687 g

Operating temperature: 0–45°C

Operating humidity: 10–80%, non-condensing

Storage temperature: -10–60°C

Storage humidity: 10–90%, excluding paper roll

Accessories: USB cable, Quick Start Guide, roll paper