35 lines
1.2 KiB
ReStructuredText
35 lines
1.2 KiB
ReStructuredText
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Printing Barcodes
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-----------------
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:Last Reviewed: 2016-07-31
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Most ESC/POS-printers implement barcode-printing.
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The barcode-commandset is implemented in the barcode-method.
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For a list of compatible barcodes you should check the manual of your printer.
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As a rule of thumb: even older Epson-models support most 1D-barcodes.
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To be sure just try some implementations and have a look at the notices below.
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barcode-method
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~~~~~~~~~~~~~~
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The barcode-method is rather low-level and orients itself on the implementation of ESC/POS.
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In the future this class could be supplemented by a high-level class that helps the user generating the payload.
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.. py:currentmodule:: escpos.escpos
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.. automethod:: Escpos.barcode
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:noindex:
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CODE128
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~~~~~~~
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Code128 barcodes need a certain format.
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For now the user has to make sure that the payload is correct.
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For alphanumeric CODE128 you have to preface your payload with `{B`.
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.. code-block:: Python
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from escpos.printer import Dummy, Serial
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p = Serial()
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# print CODE128 012ABCDabcd
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p.barcode("{B012ABCDabcd", "CODE128", function_type="B")
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A very good description on CODE128 is also on `Wikipedia <https://en.wikipedia.org/wiki/Code_128>`_.
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