rasterprynt

rasterprynt is a Python library and program to print raster graphics on various label printers. As of writing, the following printers are supported:

• Brother PT P950NW
• Brother PT 9800PCN

This uses an undocumented reverse-engineered protocol, similar to the one in use by brother_ql.

At the moment, the tape width is fixed at 18mm and the quality as high, but patches are always welcome.

Installation

As a depency, depend on the PyPi package rasterprynt. To install dependencies for a command-line installation, type

$ pip install -r requirements.txt

Command Line Usage

All functionality is available as a command-line program, like this:

$ python -m rasterprynt 192.168.1.123 img1.png img2.jpg img1.png --top-margin 10

Library Usage

The main method is rasterprynt.prynt, which takes a list of images. Cuts will be inserted in between the images.

import rasterprynt

import PIL.Image

# Enter the IP address of your printer below
printer_ip = '192.168.1.123'

img1 = PIL.Image.open('example1.png')
img2 = PIL.Image.open('example2.png')
data = rasterprynt.prynt([img1, img2, img1], printer_ip)

Additional utilities

plotimg.py provides a way to do the reverse transformation.