Made to work with Epson and Star thermal printers
npm install thermal-printer
bash
sudo apt-get install build-essential
`bash
$ npm install node-thermal-printer
`
$3
js
printer.init({
type: 'star', // Printer type: 'star' or 'epson'
interface: '/dev/usb/lp0', // Printer interface
characterSet: 'SLOVENIA', // Printer character set
removeSpecialCharacters: false, // Removes special characters - default: false
replaceSpecialCharacters: true // Replaces special characters listed in config files - default: true
});printer.isPrinterConnected( function(isConnected){ } ) // Check if printer is connected, callback passes bool of status
printer.execute( function(err){ } ); // Executes all the commands. Optional callback returns null if no error, else error message
printer.raw(new Buffer("Hello world"), function(err){ } ); // Print instantly. Optional callback returns null if no error, else error message
printer.print("Hello World"); // Append text
printer.println("Hello World"); // Append text with new line
printer.openCashDrawer(); // Kick the cash drawer
printer.cut(); // Cuts the paper (if printer only supports one mode use this)
printer.partialCut(); // Cuts the paper leaving a small bridge in middle (if printer supports multiple cut modes)
printer.beep(); // Sound internal beeper/buzzer (if available)
printer.upsideDown(true); // Content is printed upside down (rotated 180 degrees)
printer.bold(true); // Set text bold
printer.invert(true); // Background/text color inversion
printer.underline(true); // Underline text (1 dot thickness)
printer.underlineThick(true); // Underline text with thick line (2 dot thickness)
printer.drawLine(); // Draws a line
printer.newLine(); // Insers break line
printer.alignCenter(); // Align text to center
printer.alignLeft(); // Align text to left
printer.alignRight(); // Align text to right
printer.setTypeFontA(); // Set font type to A (default)
printer.setTypeFontB(); // Set font type to B
printer.setTextNormal(); // Set text to normal
printer.setTextDoubleHeight(); // Set text to double height
printer.setTextDoubleWidth(); // Set text to double width
printer.setTextQuadArea(); // Set text to quad area
printer.leftRight("Left", "Right"); // Prints text left and right
printer.table(["One", "Two", "Three"]); // Prints table equaly
printer.tableCustom([ // Prints table with custom settings (text, align, width, bold)
{ text:"Left", align:"LEFT", width:0.5 },
{ text:"Center", align:"CENTER", width:0.25, bold:true },
{ text:"Right", align:"RIGHT", width:0.25 }
]);
printer.code128("Code128"); // Print code128 bar code
printer.printQR("https://github.com/Klemen1337/node-thermal-printer"); // Print QR code
printer.printImage('./assets/olaii-logo-black.png', function(done){ }); // Print PNG image (uses callback)
print.clear(); // Clears printText value
print.getText(); // Returns printer buffer string value
print.getBuffer(); // Returns printer buffer
print.getWidth(); // Get number of characters in one line
`$3
js
printer.code128("Code128", {
width: "LARGE", // "SMALL", "MEDIUM", "LARGE",
height: 80, // 50 < x < 80
text: 2, // 1 - No text
// 2 - Text on bottom
// 3 - No text inline
// 4 - Text on bottom inline
});
`
$3
js
var printer = require("node-thermal-printer");
printer.init({
type: 'epson',
interface: '/dev/usb/lp0'
});
printer.alignCenter();
printer.println("Hello world");
printer.printImage('./assets/olaii-logo-black.png', function(done){
printer.cut();
printer.execute(function(err){
if (err) {
console.error("Print failed", err);
} else {
console.log("Print done");
}
});
});``