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First, a clarification: The is an impact/slip printer (older model, serial/parallel). It doesn’t have a standard Windows printer driver like a TM-T20 or TM-T88. It usually uses ESC/POS commands directly over COM/LPT .
Click if Windows prompts a security warning. driver printer vsc tm-801
This usually means the Baud Rate is mismatched (standard is 9600 or 19200) or you are using the wrong driver. First, a clarification: The is an impact/slip printer
const SerialPort = require('serialport'); const port = new SerialPort( path: 'COM1', baudRate: 9600 ); port.write(Buffer.from([0x1B, 0x40])); // init port.write('Test line\n'); port.write(Buffer.from([0x0A, 0x0A])); // line feeds baudRate: 9600 )