diff --git a/printer_zpl2/models/zpl2.py b/printer_zpl2/models/zpl2.py
new file mode 100644
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+++ b/printer_zpl2/models/zpl2.py
@@ -0,0 +1,529 @@
+# Copyright (C) 2016 SYLEAM (<http://www.syleam.fr>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+# Copied from https://github.com/subteno-it/python-zpl2, as there has been new releases
+# that breaks current code without clear source (no commit on the repo). As the amount
+# of code is not too much, we put it on the module itself, being able to control the
+# whole chain, and to reduce the code with the considerations of current Odoo version
+
+import binascii
+import math
+
+try:
+    from PIL import ImageOps
+except:
+    ImageOps = None
+
+try:
+    strcast = unicode
+except:
+    strcast = str
+
+# Constants for the printer configuration management
+CONF_RELOAD_FACTORY = "F"
+CONF_RELOAD_NETWORK_FACTORY = "N"
+CONF_RECALL_LAST_SAVED = "R"
+CONF_SAVE_CURRENT = "S"
+
+# Command arguments names
+ARG_FONT = "font"
+ARG_HEIGHT = "height"
+ARG_WIDTH = "width"
+ARG_ORIENTATION = "orientation"
+ARG_THICKNESS = "thickness"
+ARG_BLOCK_WIDTH = "block_width"
+ARG_BLOCK_LINES = "block_lines"
+ARG_BLOCK_SPACES = "block_spaces"
+ARG_BLOCK_JUSTIFY = "block_justify"
+ARG_BLOCK_LEFT_MARGIN = "block_left_margin"
+ARG_CHECK_DIGITS = "check_digits"
+ARG_INTERPRETATION_LINE = "interpretation_line"
+ARG_INTERPRETATION_LINE_ABOVE = "interpretation_line_above"
+ARG_STARTING_MODE = "starting_mode"
+ARG_SECURITY_LEVEL = "security_level"
+ARG_COLUMNS_COUNT = "columns_count"
+ARG_ROWS_COUNT = "rows_count"
+ARG_TRUNCATE = "truncate"
+ARG_MODE = "mode"
+ARG_MODULE_WIDTH = "module_width"
+ARG_BAR_WIDTH_RATIO = "bar_width_ratio"
+ARG_REVERSE_PRINT = "reverse_print"
+ARG_IN_BLOCK = "in_block"
+ARG_COLOR = "color"
+ARG_ROUNDING = "rounding"
+ARG_DIAMETER = "diameter"
+ARG_DIAGONAL_ORIENTATION = "diagonal_orientation"
+ARG_MODEL = "model"
+ARG_MAGNIFICATION_FACTOR = "magnification_factor"
+ARG_ERROR_CORRECTION = "error_correction"
+ARG_MASK_VALUE = "mask_value"
+
+# Model values
+MODEL_ORIGINAL = 1
+MODEL_ENHANCED = 2
+
+# Error Correction
+ERROR_CORRECTION_ULTRA_HIGH = "H"
+ERROR_CORRECTION_HIGH = "Q"
+ERROR_CORRECTION_STANDARD = "M"
+ERROR_CORRECTION_HIGH_DENSITY = "L"
+
+# Boolean values
+BOOL_YES = "Y"
+BOOL_NO = "N"
+
+# Orientation values
+ORIENTATION_NORMAL = "N"
+ORIENTATION_ROTATED = "R"
+ORIENTATION_INVERTED = "I"
+ORIENTATION_BOTTOM_UP = "B"
+
+# Diagonal lines orientation values
+DIAGONAL_ORIENTATION_LEFT = "L"
+DIAGONAL_ORIENTATION_RIGHT = "R"
+
+# Justify values
+JUSTIFY_LEFT = "L"
+JUSTIFY_CENTER = "C"
+JUSTIFY_JUSTIFIED = "J"
+JUSTIFY_RIGHT = "R"
+
+# Font values
+FONT_DEFAULT = "0"
+FONT_9X5 = "A"
+FONT_11X7 = "B"
+FONT_18X10 = "D"
+FONT_28X15 = "E"
+FONT_26X13 = "F"
+FONT_60X40 = "G"
+FONT_21X13 = "H"
+
+# Color values
+COLOR_BLACK = "B"
+COLOR_WHITE = "W"
+
+# Barcode types
+BARCODE_CODE_11 = "code_11"
+BARCODE_INTERLEAVED_2_OF_5 = "interleaved_2_of_5"
+BARCODE_CODE_39 = "code_39"
+BARCODE_CODE_49 = "code_49"
+BARCODE_PDF417 = "pdf417"
+BARCODE_EAN_8 = "ean-8"
+BARCODE_UPC_E = "upc-e"
+BARCODE_CODE_128 = "code_128"
+BARCODE_EAN_13 = "ean-13"
+BARCODE_QR_CODE = "qr_code"
+
+
+class Zpl2(object):
+    """ZPL II management class
+    Allows to generate data for Zebra printers
+    """
+
+    def __init__(self):
+        self.encoding = "utf-8"
+        self.initialize()
+
+    def initialize(self):
+        self._buffer = []
+
+    def output(self):
+        """Return the full contents to send to the printer"""
+        return "\n".encode(self.encoding).join(self._buffer)
+
+    def _enforce(self, value, minimum=1, maximum=32000):
+        """Returns the value, forced between minimum and maximum"""
+        return min(max(minimum, value), maximum)
+
+    def _write_command(self, data):
+        """Adds a complete command to buffer"""
+        self._buffer.append(strcast(data).encode(self.encoding))
+
+    def _generate_arguments(self, arguments, kwargs):
+        """Generate a zebra arguments from an argument names list and a dict of
+        values for these arguments
+        @param arguments : list of argument names, ORDER MATTERS
+        @param kwargs : list of arguments values
+        """
+        command_arguments = []
+        # Add all arguments in the list, if they exist
+        for argument in arguments:
+            if kwargs.get(argument, None) is not None:
+                if isinstance(kwargs[argument], bool):
+                    kwargs[argument] = kwargs[argument] and BOOL_YES or BOOL_NO
+                command_arguments.append(kwargs[argument])
+
+        # Return a zebra formatted string, with a comma between each argument
+        return ",".join(map(str, command_arguments))
+
+    def print_width(self, label_width):
+        """Defines the print width setting on the printer"""
+        self._write_command("^PW%d" % label_width)
+
+    def configuration_update(self, active_configuration):
+        """Set the active configuration on the printer"""
+        self._write_command("^JU%s" % active_configuration)
+
+    def label_start(self):
+        """Adds the label start command to the buffer"""
+        self._write_command("^XA")
+
+    def label_encoding(self):
+        """Adds the label encoding command to the buffer
+        Fixed value defined to UTF-8
+        """
+        self._write_command("^CI28")
+
+    def label_end(self):
+        """Adds the label start command to the buffer"""
+        self._write_command("^XZ")
+
+    def label_home(self, left, top):
+        """Define the label top left corner"""
+        self._write_command("^LH%d,%d" % (left, top))
+
+    def _field_origin(self, right, down):
+        """Define the top left corner of the data, from the top left corner of
+        the label
+        """
+        return "^FO%d,%d" % (right, down)
+
+    def _font_format(self, font_format):
+        """Send the commands which define the font to use for the current data"""
+        arguments = [ARG_FONT, ARG_HEIGHT, ARG_WIDTH]
+        # Add orientation in the font name (only place where there is
+        # no comma between values)
+        font_format[ARG_FONT] += font_format.get(ARG_ORIENTATION, ORIENTATION_NORMAL)
+        # Check that the height value fits in the allowed values
+        if font_format.get(ARG_HEIGHT) is not None:
+            font_format[ARG_HEIGHT] = self._enforce(font_format[ARG_HEIGHT], minimum=10)
+        # Check that the width value fits in the allowed values
+        if font_format.get(ARG_WIDTH) is not None:
+            font_format[ARG_WIDTH] = self._enforce(font_format[ARG_WIDTH], minimum=10)
+        # Generate the ZPL II command
+        return "^A" + self._generate_arguments(arguments, font_format)
+
+    def _field_block(self, block_format):
+        """Define a maximum width to print some data"""
+        arguments = [
+            ARG_BLOCK_WIDTH,
+            ARG_BLOCK_LINES,
+            ARG_BLOCK_SPACES,
+            ARG_BLOCK_JUSTIFY,
+            ARG_BLOCK_LEFT_MARGIN,
+        ]
+        return "^FB" + self._generate_arguments(arguments, block_format)
+
+    def _barcode_format(self, barcodeType, barcode_format):
+        """Generate the commands to print a barcode
+        Each barcode type needs a specific function
+        """
+
+        def _code11(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_CHECK_DIGITS,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+            ]
+            return "1" + self._generate_arguments(arguments, kwargs)
+
+        def _interleaved2of5(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+                ARG_CHECK_DIGITS,
+            ]
+            return "2" + self._generate_arguments(arguments, kwargs)
+
+        def _code39(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_CHECK_DIGITS,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+            ]
+            return "3" + self._generate_arguments(arguments, kwargs)
+
+        def _code49(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_STARTING_MODE,
+            ]
+            # Use interpretation_line and interpretation_line_above to generate
+            # a specific interpretation_line value
+            if kwargs.get(ARG_INTERPRETATION_LINE) is not None:
+                if kwargs[ARG_INTERPRETATION_LINE]:
+                    if kwargs[ARG_INTERPRETATION_LINE_ABOVE]:
+                        # Interpretation line after
+                        kwargs[ARG_INTERPRETATION_LINE] = "A"
+                    else:
+                        # Interpretation line before
+                        kwargs[ARG_INTERPRETATION_LINE] = "B"
+                else:
+                    # No interpretation line
+                    kwargs[ARG_INTERPRETATION_LINE] = "N"
+            return "4" + self._generate_arguments(arguments, kwargs)
+
+        def _pdf417(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_SECURITY_LEVEL,
+                ARG_COLUMNS_COUNT,
+                ARG_ROWS_COUNT,
+                ARG_TRUNCATE,
+            ]
+            return "7" + self._generate_arguments(arguments, kwargs)
+
+        def _ean8(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+            ]
+            return "8" + self._generate_arguments(arguments, kwargs)
+
+        def _upce(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+                ARG_CHECK_DIGITS,
+            ]
+            return "9" + self._generate_arguments(arguments, kwargs)
+
+        def _code128(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+                ARG_CHECK_DIGITS,
+                ARG_MODE,
+            ]
+            return "C" + self._generate_arguments(arguments, kwargs)
+
+        def _ean13(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_HEIGHT,
+                ARG_INTERPRETATION_LINE,
+                ARG_INTERPRETATION_LINE_ABOVE,
+            ]
+            return "E" + self._generate_arguments(arguments, kwargs)
+
+        def _qrcode(**kwargs):
+            arguments = [
+                ARG_ORIENTATION,
+                ARG_MODEL,
+                ARG_MAGNIFICATION_FACTOR,
+                ARG_ERROR_CORRECTION,
+                ARG_MASK_VALUE,
+            ]
+            return "Q" + self._generate_arguments(arguments, kwargs)
+
+        barcodeTypes = {
+            BARCODE_CODE_11: _code11,
+            BARCODE_INTERLEAVED_2_OF_5: _interleaved2of5,
+            BARCODE_CODE_39: _code39,
+            BARCODE_CODE_49: _code49,
+            BARCODE_PDF417: _pdf417,
+            BARCODE_EAN_8: _ean8,
+            BARCODE_UPC_E: _upce,
+            BARCODE_CODE_128: _code128,
+            BARCODE_EAN_13: _ean13,
+            BARCODE_QR_CODE: _qrcode,
+        }
+        return "^B" + barcodeTypes[barcodeType](**barcode_format)
+
+    def _barcode_field_default(self, barcode_format):
+        """Add the data start command to the buffer"""
+        arguments = [
+            ARG_MODULE_WIDTH,
+            ARG_BAR_WIDTH_RATIO,
+        ]
+        return "^BY" + self._generate_arguments(arguments, barcode_format)
+
+    def _field_data_start(self):
+        """Add the data start command to the buffer"""
+        return "^FD"
+
+    def _field_reverse_print(self):
+        """Allows the printed data to appear white over black, or black over white"""
+        return "^FR"
+
+    def _field_data_stop(self):
+        """Add the data stop command to the buffer"""
+        return "^FS"
+
+    def _field_data(self, data):
+        """Add data to the buffer, between start and stop commands"""
+        command = "{start}{data}{stop}".format(
+            start=self._field_data_start(),
+            data=data,
+            stop=self._field_data_stop(),
+        )
+        return command
+
+    def font_data(self, right, down, field_format, data):
+        """Add a full text in the buffer, with needed formatting commands"""
+        reverse = ""
+        if field_format.get(ARG_REVERSE_PRINT, False):
+            reverse = self._field_reverse_print()
+        block = ""
+        if field_format.get(ARG_IN_BLOCK, False):
+            block = self._field_block(field_format)
+        command = "{origin}{font_format}{reverse}{block}{data}".format(
+            origin=self._field_origin(right, down),
+            font_format=self._font_format(field_format),
+            reverse=reverse,
+            block=block,
+            data=self._field_data(data),
+        )
+        self._write_command(command)
+
+    def barcode_data(self, right, down, barcodeType, barcode_format, data):
+        """Add a full barcode in the buffer, with needed formatting commands"""
+        command = "{default}{origin}{barcode_format}{data}".format(
+            default=self._barcode_field_default(barcode_format),
+            origin=self._field_origin(right, down),
+            barcode_format=self._barcode_format(barcodeType, barcode_format),
+            data=self._field_data(data),
+        )
+        self._write_command(command)
+
+    def graphic_box(self, right, down, graphic_format):
+        """Send the commands to draw a rectangle"""
+        arguments = [
+            ARG_WIDTH,
+            ARG_HEIGHT,
+            ARG_THICKNESS,
+            ARG_COLOR,
+            ARG_ROUNDING,
+        ]
+        # Check that the thickness value fits in the allowed values
+        if graphic_format.get(ARG_THICKNESS) is not None:
+            graphic_format[ARG_THICKNESS] = self._enforce(graphic_format[ARG_THICKNESS])
+        # Check that the width value fits in the allowed values
+        if graphic_format.get(ARG_WIDTH) is not None:
+            graphic_format[ARG_WIDTH] = self._enforce(
+                graphic_format[ARG_WIDTH], minimum=graphic_format[ARG_THICKNESS]
+            )
+        # Check that the height value fits in the allowed values
+        if graphic_format.get(ARG_HEIGHT) is not None:
+            graphic_format[ARG_HEIGHT] = self._enforce(
+                graphic_format[ARG_HEIGHT], minimum=graphic_format[ARG_THICKNESS]
+            )
+        # Check that the rounding value fits in the allowed values
+        if graphic_format.get(ARG_ROUNDING) is not None:
+            graphic_format[ARG_ROUNDING] = self._enforce(
+                graphic_format[ARG_ROUNDING], minimum=0, maximum=8
+            )
+        # Generate the ZPL II command
+        command = "{origin}{data}{stop}".format(
+            origin=self._field_origin(right, down),
+            data="^GB" + self._generate_arguments(arguments, graphic_format),
+            stop=self._field_data_stop(),
+        )
+        self._write_command(command)
+
+    def graphic_diagonal_line(self, right, down, graphic_format):
+        """Send the commands to draw a rectangle"""
+        arguments = [
+            ARG_WIDTH,
+            ARG_HEIGHT,
+            ARG_THICKNESS,
+            ARG_COLOR,
+            ARG_DIAGONAL_ORIENTATION,
+        ]
+        # Check that the thickness value fits in the allowed values
+        if graphic_format.get(ARG_THICKNESS) is not None:
+            graphic_format[ARG_THICKNESS] = self._enforce(graphic_format[ARG_THICKNESS])
+        # Check that the width value fits in the allowed values
+        if graphic_format.get(ARG_WIDTH) is not None:
+            graphic_format[ARG_WIDTH] = self._enforce(
+                graphic_format[ARG_WIDTH], minimum=3
+            )
+        # Check that the height value fits in the allowed values
+        if graphic_format.get(ARG_HEIGHT) is not None:
+            graphic_format[ARG_HEIGHT] = self._enforce(
+                graphic_format[ARG_HEIGHT], minimum=3
+            )
+        # Check the given orientation
+        graphic_format[ARG_DIAGONAL_ORIENTATION] = graphic_format.get(
+            ARG_DIAGONAL_ORIENTATION, DIAGONAL_ORIENTATION_LEFT
+        )
+        # Generate the ZPL II command
+        command = "{origin}{data}{stop}".format(
+            origin=self._field_origin(right, down),
+            data="^GD" + self._generate_arguments(arguments, graphic_format),
+            stop=self._field_data_stop(),
+        )
+        self._write_command(command)
+
+    def graphic_circle(self, right, down, graphic_format):
+        """Send the commands to draw a circle"""
+        arguments = [ARG_DIAMETER, ARG_THICKNESS, ARG_COLOR]
+        # Check that the diameter value fits in the allowed values
+        if graphic_format.get(ARG_DIAMETER) is not None:
+            graphic_format[ARG_DIAMETER] = self._enforce(
+                graphic_format[ARG_DIAMETER], minimum=3, maximum=4095
+            )
+        # Check that the thickness value fits in the allowed values
+        if graphic_format.get(ARG_THICKNESS) is not None:
+            graphic_format[ARG_THICKNESS] = self._enforce(
+                graphic_format[ARG_THICKNESS], minimum=2, maximum=4095
+            )
+        # Generate the ZPL II command
+        command = "{origin}{data}{stop}".format(
+            origin=self._field_origin(right, down),
+            data="^GC" + self._generate_arguments(arguments, graphic_format),
+            stop=self._field_data_stop(),
+        )
+        self._write_command(command)
+
+    def graphic_field(self, right, down, pil_image):
+        """Encode a PIL image into an ASCII string suitable for ZPL printers"""
+        if ImageOps is None:
+            # Importing ImageOps from PIL didn't work
+            raise Exception(
+                "You must install Pillow to be able to use the graphic"
+                " fields feature"
+            )
+        width, height = pil_image.size
+        rounded_width = int(math.ceil(width / 8.0) * 8)
+        # Transform the image :
+        #   - Invert the colors (PIL uses 0 for black, ZPL uses 0 for white)
+        #   - Convert to monochrome in case it is not already
+        #   - Round the width to a multiple of 8 because ZPL needs an integer
+        #     count of bytes per line (each pixel is a bit)
+        pil_image = (
+            ImageOps.invert(pil_image).convert("1").crop((0, 0, rounded_width, height))
+        )
+        # Convert the image to a two-character hexadecimal values string
+        ascii_data = binascii.hexlify(pil_image.tobytes()).upper()
+        # Each byte is composed of two characters
+        bytes_per_row = rounded_width / 8
+        total_bytes = bytes_per_row * height
+        graphic_image_command = (
+            "^GFA,{total_bytes},{total_bytes},{bytes_per_row},{ascii_data}".format(
+                total_bytes=total_bytes,
+                bytes_per_row=bytes_per_row,
+                ascii_data=ascii_data,
+            )
+        )
+        # Generate the ZPL II command
+        command = "{origin}{data}{stop}".format(
+            origin=self._field_origin(right, down),
+            data=graphic_image_command,
+            stop=self._field_data_stop(),
+        )
+        self._write_command(command)