Node Thermal Printer

Node.js module for EPSON and STAR thermal printers command line printing.

Installation

$ npm install @tabby-pos/thermal-printer

Features

const { ThermalPrinter, WebUSBInterface } = require("@tabby-pos/thermal-printer/browser");

let printer = new ThermalPrinter({
  type: PrinterTypes.STAR,                                  // Printer type: 'star' or 'epson'
  interface: new WebUSBInterface(device),                   // Printer interface
  characterSet: 'SLOVENIA',                                 // Printer character set - default: SLOVENIA
  removeSpecialCharacters: false,                           // Removes special characters - default: false
  lineCharacter: "=",                                       // Set character for lines - default: "-"
  options:{                                                 // Additional options
    timeout: 5000                                           // Connection timeout (ms) [applicable only for network printers] - default: 3000
  }
});

let isConnected = await printer.isPrinterConnected();       // Check if printer is connected, return bool of status
let execute = await printer.execute();                      // Executes all the commands. Returns success or throws error
let raw = await printer.raw(Buffer.from("Hello world"));    // Print instantly. Returns success or throws error
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.setCharacterSet("SLOVENIA");                        // Set character set - default set on init
printer.setPrinterDriver(Object)                            // Set printer drive - default set on init

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.setTextSize(7,7);                                   // Set text height (0-7) and width (0-7)

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, cols, bold)
  { text:"Left", align:"LEFT", width:0.5 },
  { text:"Center", align:"CENTER", width:0.25, bold:true },
  { text:"Right", align:"RIGHT", cols:8 }
]);

printer.code128("Code128");                                 // Print code128 bar code
printer.printQR("QR CODE");                                 // Print QR code
await printer.printImage('./assets/olaii-logo-black.png');  // Print PNG image

print.clear();                                              // Clears printText value
print.getText();                                            // Returns printer buffer string value
print.getBuffer();                                          // Returns printer buffer
print.setBuffer(newBuffer);                                 // Set the printer buffer to a copy of newBuffer
print.getWidth();                                           // Get number of characters in one line

How to run examples (Set to EPSON)

Network printer

node examples/example.js tcp://xxx.xxx.xxx.xxx

Pritner name via Printer module

node examples/example.js 'printer:My Printer'

Local port or file

node examples/example.js '\\.\COM1'

Interface options

| Value | Descripton | |---------------------------|------------| | tcp://192.168.0.99:9100 | Network printer with port | | printer:auto | Auto select raw system printer via Printer or Electron printer module | | printer:My Printer Name | Select system printer by name via Printer or Electron printer module | | \\.\COM1 | Print via local port or file |

System Printer Drivers

When using a system printer, you need to provide the driver. Use electron-printer or printer driver:

const ThermalPrinter = require("node-thermal-printer").printer;
const PrinterTypes = require("node-thermal-printer").types;
const electron = typeof process !== 'undefined' && process.versions && !!process.versions.electron;

let printer = new ThermalPrinter({
  type: PrinterTypes.EPSON,
  interface: 'printer:My Printer',
  driver: require(electron ? 'electron-printer' : 'printer')
});

Use a custom printer driver:

const ThermalPrinter = require("node-thermal-printer").printer;
const PrinterTypes = require("node-thermal-printer").types;

let printer = new ThermalPrinter({
  type: PrinterTypes.EPSON,
  interface: 'printer:My Printer',
  driver: MyCustomDriver
});

// you can also set the driver after init:
printer.setPrinterDriver(MyCustomDriver)

Network printing example

const ThermalPrinter = require("node-thermal-printer").printer;
const PrinterTypes = require("node-thermal-printer").types;

let printer = new ThermalPrinter({
  type: PrinterTypes.EPSON,
  interface: 'tcp://xxx.xxx.xxx.xxx'
});

printer.alignCenter();
printer.println("Hello world");
await printer.printImage('./assets/olaii-logo-black.png')
printer.cut();

try {
  let execute = printer.execute()
  console.error("Print done!");
} catch (error) {
  console.log("Print failed:", error);
}

2D Barcode Examples

Example settings are the default when not specified.

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
});

printer.printQR("QR Code", {
    cellSize: 3,             // 1 - 8
    correction: 'M',         // L(7%), M(15%), Q(25%), H(30%)
    model: 2                 // 1 - Model 1
                             // 2 - Model 2 (standard)
                             // 3 - Micro QR
});

printer.pdf417("PDF417", {
    rowHeight: 3,            // 2 - 8
    width: 3,                // 2 - 8
    correction: 1,           // Ratio: 1 - 40
    truncated: false,        // boolean
    columns: 0               // 1 - 30, 0 auto
});

printer.maxiCode("MaxiCode", {
    mode: 4,                 // 2 - Formatted/structured Carrier Message (US)
                             // 3 - Formatted/structured Carrier Message (International)
                             // 4 - Unformatted data with Standard Error Correction.
                             // 5 - Unformatted data with Enhanced Error Correction.
                             // 6 - For programming hardware devices.
});

1D Barcode Example

var data = "GS1-128"     // Barcode data (string or buffer)
var type = 74            // Barcode type (See Reference)
var settings = {         // Optional Settings
  hriPos: 0,             // Human readable character 0 - 3 (none, top, bottom, both)
  hriFont: 0,            // Human readable character font
  width: 3,              // Barcode width
  height: 168            // Barcode height
}

printer.printBarcode(data, type, settings);

Epson Barcode Reference

| # | Type | Possible Characters | Length of Data | |:--:|------------------------------|------------------------------------------------------------------------------------------|------------------------| | 65 | UPC-A | 0 - 9 | 11, 12 | | 66 | UPC-E | 0 - 9 | 6 – 8, 11, 12 | | 67 | JAN13 | 0 - 9 | 12, 13 | | 68 | JAN8 | 0 - 9 | 7, 8 | | 69 | Code39 | 0 – 9, A – Z, SP, $, %, *, +, -, ., / | 1 – 255 | | 70 | ITF (Interleaved 2 of 5) | 0 – 9 | 2 – 254 (even number) | | 71 | CODABAR (NW-7) | 0 – 9, A – D, a – d, $, +, −, ., /, : | 2 – 255 | | 72 | CODE93 | 00h – 7Fh | 1 – 255 | | 73 | CODE128 | 00h – 7Fh | 2 - 255 | | 74 | GS1-128 | NUL – SP(7Fh) | 2 – 255 | | 75 | GS1 DataBar Omnidirectional | 0 – 9 | 13 | | 76 | GS1 DataBar Truncated | 0 – 9 | 13 | | 77 | GS1 DataBar Limited | 0 – 9 | 13 | | 78 | GS1 DataBar Expanded | 0 – 9, A – D, a – d, SP, !, ", %, $, ', (, ), *, +, ,, -, ., /, :, ;, <, =, >, ?, _, { | 2 - 255 |

STAR Barcode Reference

var data = "TEST"        // Barcode data (string or buffer)
var type = 7             // Barcode type (See Reference)
var settings = {         // Optional Settings
  characters: 1,         // Add characters (See Reference)
  mode: 3,               // Barcode mode (See Reference)
  height: 150,           // Barcode height (0≤ height ≤255)
}

printer.printBarcode(data, type, settings);

Type

| # | Type | |:-:|-----------| | 0 | UPC-E | | 1 | UPC-A | | 2 | JAN/EAN8 | | 3 | JAN/EAN13 | | 4 | Code39 | | 5 | ITF | | 6 | CODE128 | | 7 | CODE93 | | 8 | NW-7 |

Settings characters

| # | Description | |:-:|-------------------------------------------------------------------------------------| | 1 | No added under-bar characters. Executes line feed after printing a bar code | | 2 | Adds under-bar characters. Executes line feed after printing a bar code | | 3 | No added under-bar characters. Does not execute line feed after printing a bar code | | 4 | Adds under-bar characters. Does not execute line feed after printing a bar code |

Settings mode

| # | UPC-E, UPC-A, JAN/EAN8, JAN/EAN13, Code128, Code93 | Code39, NW-7 | ITF | |:-:|-----------------------------------------------------|--------------------------|---------------------------| | 1 | Minimum module 2 dots | Narrow: Wide = 2:6 dots | Narrow: Wide = 2:5 dots | | 2 | Minimum module 3 dots | Narrow: Wide = 3:9 dots | Narrow: Wide = 4:10 dots | | 3 | Minimum module 4 dots | Narrow: Wide = 4:12 dots | Narrow: Wide = 6:15 dots | | 4 | | Narrow: Wide = 2:5 dots | Narrow: Wide = 2:4 dots | | 5 | | Narrow: Wide = 3:8 dots | Narrow: Wide = 4:8 dots | | 6 | | Narrow: Wide = 4:10 dots | Narrow: Wide = 6:12 dots | | 7 | | Narrow: Wide = 2:4 dots | Narrow: Wide = 2:6 dots | | 8 | | Narrow: Wide = 3:6 dots | Narrow: Wide = 3:9 dots | | 9 | | Narrow: Wide = 4:8 dots | Narrow: Wide = 4:12 dots |

Docs

• STAR: http://www.starmicronics.com/support/mannualfolder/starline_cm_rev1.15_en.pdf
• EPSON: https://reference.epson-biz.com/modules/ref_escpos/index.php

Tested printers:

• Star TSP700
• Rongta RP80US
• Rongta RP326-USE
• EPSON TM-T88V
• Posman BTP-R880NP (Type "epson")

Character sets

• PC437_USA
• PC850_MULTILINGUAL
• PC860_PORTUGUESE
• PC863_CANADIAN_FRENCH
• PC865_NORDIC
• PC851_GREEK
• PC857_TURKISH
• PC737_GREEK
• ISO8859_7_GREEK
• WPC1252
• PC866_CYRILLIC2
• PC852_LATIN2
• SLOVENIA
• PC858_EURO
• WPC775_BALTIC_RIM
• PC855_CYRILLIC
• PC861_ICELANDIC
• PC862_HEBREW
• PC864_ARABIC
• PC869_GREEK
• ISO8859_2_LATIN2
• ISO8859_15_LATIN9
• PC1125_UKRANIAN
• WPC1250_LATIN2
• WPC1251_CYRILLIC
• WPC1253_GREEK
• WPC1254_TURKISH
• WPC1255_HEBREW
• WPC1256_ARABIC
• WPC1257_BALTIC_RIM
• WPC1258_VIETNAMESE
• KZ1048_KAZAKHSTAN

CHANGELOG

See CHANGELOG.md