Klemen1337
Unable to get printer interface
I have implemented this library for the STAR TSP100III printer, but code is not working as I am using printer which is connected by USB.
Code is broken at this line: **interface: tcp://${printerInfo.name}, // Printer interface (assuming network interface here) **
ipcMain.on("printOrderInfo", (event, count, printContent, isCashOrCheck) => {
// Get available printers
const printers = mainWindow.webContents.getPrinters();
// Find the printer named "Star TSP100 Cutter"
let printerInfo = printers.find((printer) =>
printer.name.includes("Star TSP100 Cutter")
);
// Check if the printer is available
if (!printerInfo) {
console.log("Star TSP100 Cutter Printer is not available for Print.");
return;
}
// Initialize the printer instance
const printer = new ThermalPrinter({
type: PrinterTypes.STAR, // Printer type: 'star' or 'epson'
interface: `tcp://${printerInfo.name}`, // Printer interface (assuming network interface here)
characterSet: CharacterSet.PC852_LATIN2, // Printer character set
removeSpecialCharacters: false, // Do not remove special characters by default
lineCharacter: "=", // Character for lines in the receipt (default: "-")
breakLine: BreakLine.WORD, // Break line after word (default: WORD)
options: {
preview: false, // No preview
width: "240px", // Set content body width
margin: "0 0 0 0", // Set margin of content body
copies: 1, // Number of copies to print
printerName: printerInfo.name, // Printer name from the available printers list
timeOutPerLine: 400, // Timeout per line for printing
silent: true, // Do not show preview or print dialogs
timeout: 5000 // Timeout for connection (network printers)
}
});
// Loop through each print request and print
for (let index = 0; index < count; index++) {
const data = [
{
type: "text", // Type of data: text
value: printContent[index], // Text content to print
css: {
"text-align": "center", // Center align the text
},
}
];
// Add the raw command to open the cash drawer if `isCashOrCheck` is true
if (isCashOrCheck) {
// Raw command for cash drawer (e.g., BEL \x07)
data.push({
type: "raw", // Use 'raw' type for sending control commands
value: "\x07", // ASCII BEL (bell) to open cash drawer
});
}
try {
// Print the text data
await printer.printText(data); // Print the content as text
await printer.cut(); // Cut the paper after printing
// If the transaction is cash or check, print the raw command to open the drawer
if (isCashOrCheck) {
const rawCommand = Buffer.from([0x07]); // Convert \x07 to a buffer for raw printing
await printer.printRaw(rawCommand); // Send the raw command
}
} catch (error) {
// Handle printing errors
console.error("Failed to print. Error: " + error);
}
}
});
Please help me to resolve it. Thank you in advance!
I was able to get this to work via USB, I set the interface to interface: "/dev/usb/lp1", // Printer interface
I got to know the interface from ls /dev/usb/lp* this command in my terminal.
My os in ubuntu
I have tried the mentioned interface, but it doesn't work for Windows machines. Could you please suggest any other solution? I am using a Windows Electron app.
Thank you in advance!
it will be different for windows, it will be start with COM. you may find it in your device manager or something like that.
As the printer is connected through USB, it can't use the COM port name. Could you please suggest anything else?
Thank you!
Are you sure? Because when I used to connect my Arduino to windows laptop, it was mounted at COM7 or something like that, can you verify once?
Yes I already verified and it is showing USB001 for printer, but it's not working when I add this as interface
@amrutakawale can you please send your repo/code on my mail, I will try to reproduce it.
@yashkolambekar I sent you the code details. Could you please check once and let me know if you require anything else from my side?
Thank you!
