pyescpos: A Python repository from vdittgen

PyESCPOS

A Python support for Epson© ESC/POS® compatible printers.

Read more at Epson ESCPOS FAQ (PDF document).

This library is inspired on Manuel F. Martinez work for python-escpos implementation.

Tested Hardware

Current implementation was tested against following hardwares:

Manufacturer	Models	Firmware Versions
Urmet Daruma	DR700 L/H/M and DR700 L-e/H-e	02.51.00, 01.20.00, 01.21.00
Bematech S/A	MP-4200 TH	1.3, 1.6

Example Usage

Serial RS232 Example

Serial communications support requires PySerial version 2.7 or later.

from escpos.serial import SerialSettings
from escpos.impl.epson import GenericESCPOS

# assumes RTS/CTS for 'ttyS5' and infers an instance of RTSCTSConnection
conn = SerialSettings.as_from('/dev/ttyS5:9600,8,1,N').get_connection()
printer = GenericESCPOS(conn)
printer.init()
printer.text('Hello World!')

USB Example

USB support requires PyUSB.

# TODO: USB support example.

Bluetooth Example

Bluetooth support requires PyBlueZ (not yet implemented).

from escpos.bluetooth import BluetoothConnection
from escpos.impl.epson import GenericESCPOS

printer = GenericESCPOS(BluetoothConnection('01:0a:02:0b:03:0c'))
printer.init()
printer.text('Hello World!')

Printing Barcodes

There is a default set of parameters for printing barcodes. Each ESC/POS implementation will take care of the details and try their best to print your barcode as you asked.

from escpos import barcode
from escpos.serial import SerialSettings
from escpos.impl.epson import GenericESCPOS

conn = SerialSettings.as_from('COM1:9600:8:1:N').get_connection()
printer = GenericESCPOS(conn)
printer.init()
printer.code128('0123456789',
        barcode_height=96, # ~12mm (~1/2")
        barcode_width=barcode.BARCODE_DOUBLE_WIDTH,
        barcode_hri=barcode.BARCODE_HRI_BOTTOM)

printer.lf()

printer.ean13('4007817525074',
        barcode_height=120, # ~15mm (~9/16"),
        barcode_width=barcode.BARCODE_NORMAL_WIDTH,
        barcode_hri=barcode.BARCODE_HRI_TOP)

printer.cut()

The barcode data should be complete, that is, an EAN-13 barcode is formed from twelve digits plus check-digit. Most of the ESC/POS commands implementations requires only twelve digits and automaticaly calculate the check-digit. If you are dealing with, say, EAN-13 codes without the thirteenth-digit (the check-digit) just append zero (0) to the barcode class (or method) argument, so they can pass RE validation.

printer.ean13('4007817525074')  # is OK
printer.ean13('400781752507')   # raises ValueError
printer.ean13('4007817525070')  # is OK and prints 4007817525074 as expected

Disclaimer

It is important that you read this disclaimer.

None of the vendors or manufacturers cited in this entire project agree or endorse any of the patterns or implementations used. its names are used only where it makes sense and/or to maintain context.

vdittgen/pyescpos