raw-printer

A native npm module for printing raw data to a printer on Windows. Supports sending RAW data including special characters, such as ESC commands to an installed printer driver using Windows' printing queue.

Installation

The package is available on npm. Prebuilt binaries are provided for Windows using node-gyp-build.

npm install @fork-hu/raw-printer
yarn add @fork-hu/raw-printer
pnpm add @fork-hu/raw-printer

Usage

import { PrintRaw } from "@fork-hu/raw-printer"

PrintRaw("EPSON TM-T70II Receipt", "My document", "Hello World!")

API Description

PrintRaw function

function PrintRaw(printer: string, documentName: string, data: string): void

The printer parameter should be the exact name of the printer driver as shown in Windows. The data is the string to be printed, which can contain special characters, such as ESC commands for receipt printers.

Examples

Usage example for Epson ESC commands:

import { PrintRaw } from "@fork-hu/raw-printer"

const ESC = "\x1B"

const alignCenterCommand = ESC + "a" + String.formCharCode(1)

// GS is used for newer commands instead of ESC on EPSON printers
const GS = "\x1D"
const CUT = GS + "V" + "\x01"

// Prints "Hello!", feeds one row and cuts the paper
const data = "Hello!\n" + CUT
PrintRaw("EPSON TM-T70II", "Test document", data)