#!/usr/bin/env python
from PIL import Image
import math
import sys
def printImage( image ):
    Epson = printer.Serial("/dev/ttyUSB0")
    if image.mode != '1':
        image = image.convert('1')
    width  = image.size[0]
    height = image.size[1]
    if width != 576:
        sys.stderr.write("Error! wrong width")
        exit()
    rowBytes = (width + 7) / 8
    bitmap   = bytearray(rowBytes * height)
    pixels   = image.load()
    for y in range(height):
        row = ""
        for x in range(int(math.ceil(width/8))*8):
            if x%8 == 0:
                imgstr = ""
            if pixels[x, y] > 150:
                color = 0
            else:
                color = 1
            imgstr = imgstr + str(color)
            if x%8 == 7:
                row = row + str(chr(int(imgstr, 2)))
                sys.stderr.write(("0"+(hex(int(imgstr, 2))[2:]))[-2:])
        Epson._raw("\x11" + row)
        sys.stderr.write("#\n")
img = Image.open('/home/ep/Bilder/chaostal-mono.png')
printImage(img)