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print image files to thermal printer ESC-POS on stdout - python 3 version
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#!/usr/bin/python | |
# esc-pos-image.py - print image files given as command line arguments | |
# to simple ESC-POS image on stdout | |
# scruss - 2014-07-26 - WTFPL (srsly) | |
# carko - 2021-01-29 - WTFPL | |
# if you want a proper CUPS driver for a 58mm thermal printer | |
# that uses this command set, go here: | |
# https://github.com/klirichek/zj-58 | |
import sys | |
from PIL import Image | |
import PIL.ImageOps | |
import struct | |
# give usage and exit if no arguments | |
if len(sys.argv) == 1: | |
print('Usage:', sys.argv[0], 'image1 image2 ... [ > printer_device ]') | |
exit(1) | |
# print all of the images! | |
for i in sys.argv[1:]: | |
im = Image.open(i) | |
# if image is not 1-bit, convert it | |
if im.mode != '1': | |
im = im.convert('1') | |
# if image width is not a multiple of 8 pixels, fix that | |
if im.size[0] % 8: | |
im2 = Image.new('1', (im.size[0] + 8 - im.size[0] % 8, | |
im.size[1]), 'white') | |
im2.paste(im, (0, 0)) | |
im = im2 | |
# Invert image, via greyscale for compatibility | |
# (no, I don't know why I need to do this) | |
im = PIL.ImageOps.invert(im.convert('L')) | |
# ... and now convert back to single bit | |
im = im.convert('1') | |
# output header (GS v 0 \000), width, height, image data | |
sys.stdout.buffer.write((b''.join((bytearray(b'\x1d\x76\x30\x00'), | |
struct.pack('2B', int(im.size[0] / 8 % 256), | |
int(im.size[0] / 8 / 256)), | |
struct.pack('2B', int(im.size[1] % 256), | |
int(im.size[1] / 256)), | |
im.tobytes())))) | |
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It really worked for me. I have used here.
Thanks!!!