ESCPOS

ESC/POS Printer driver for Node.js

This is a fork of song940/node-escpos. It is partially rewritten to ES6 but currently it is not actively updated.

Installation

Using npm

npm install @pokusew/escpos --save

If you use USBAdapter:

• On Linux, you'll need libudev to build libusb.
• On Ubuntu/Debian: sudo apt-get install build-essential libudev-dev.
• On Windows, Use Zadig to install the WinUSB driver for your USB device.

Otherwise you will get LIBUSB_ERROR_NOT_SUPPORTED when attempting to open devices.

Example

see example here

API

USBAdapter

open

Printer

text("text")

Prints raw text. Raises TextError exception.

control("align")

Carrier feed and tabs.

align is a string which takes any of the following values:

• LF for Line Feed
• FF for Form Feed
• CR for Carriage Return
• HT for Horizontal Tab
• VT for Vertical Tab

align("align")

Set text properties.

align set horizontal position for text, the possible values are:

• CENTER
• LEFT
• RIGHT

Default: left

font type could be A or B. Default: A width is a numeric value, 1 is for regular size, and 2 is twice the standard size. Default: 1 height is a numeric value, 1 is for regular size and 2 is twice the standard size. Default: 1

barcode("code", "barcode_type", width, height, "position", "font")

Prints a barcode.

code is an alphanumeric code to be printed as bar code barcode_type must be one of the following type of codes:

• UPC-A
• UPC-E
• EAN13
• EAN8
• CODE39
• ITF
• NW7

width is a numeric value in the range between (1,255) Default: 64 height is a numeric value in the range between (2,6) Default: 3 position is where to place the code around the bars, could be one of the following values:

• ABOVE
• BELOW
• BOTH
• OFF

Default: BELOW

font is one of the 2 type of fonts, values could be:

• A
• B

Default: A

Raises BarcodeTypeError, BarcodeSizeError, BarcodeCodeError exceptions.

cut("mode")

Cut paper.

mode set a full or partial cut. Default: full Partial cut is not implemented in all printers.

cashdraw(pin)

Sends a pulse to the cash drawer in the specified pin.

pin is a numeric value which defines the pin to be used to send the pulse, it could be 2 or 5. Raises `CashDrawerError()``

Thanks

• Part of code from @taoyuan

License

MIT