Node Thermal Printer

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


Installation

``bash
npm install node-thermal-printer
`

$3

Linux requires build-essentials

`bash
sudo apt-get install build-essential
`

Features

`js
const { ThermalPrinter, PrinterTypes, CharacterSet, BreakLine } = require('node-thermal-printer');

let printer = new ThermalPrinter({
type: PrinterTypes.STAR, // Printer type: 'star' or 'epson'
interface: 'tcp://xxx.xxx.xxx.xxx', // Printer interface
characterSet: CharacterSet.SLOVENIA, // Printer character set - default: SLOVENIA
removeSpecialCharacters: false, // Removes special characters - default: false
lineCharacter: "=", // Set character for lines - default: "-"
breakLine: BreakLine.WORD, // Break line after WORD or CHARACTERS. Disabled with NONE - default: WORD
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

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

How to run examples (Set to EPSON)

Network printer

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

Pritner name via Printer module

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

Local port or file

`bash
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 |

$3

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

`js
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:

`js
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)
`

$3

`js
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.

`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
});

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

`js
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);
`

---

$3

| # | 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

`js
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);
``

$3

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

$3

| # | 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 |

$3

| # | 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:
- EPSON:

Tested printers

- Star TSP700
- Rongta RP80US
- Rongta RP326-USE
- EPSON TM-T88V
- EPSON TM-T20X
- EPSON TM-T82IIIL
- 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