ZT421 industrial Printer

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Specifications are provided for reference and are based on testing the ZT421™ printer using genuine Zebra® supplies.

Results may vary in actual application settings or when using other-than-recommended Zebra supplies.

Zebra recommends always qualifying any application with thorough testing.


• Thermal transfer and direct thermal printing

• Thin film printhead with E3™ Element Energy™ Equalizer for superior print quality

• 203 dpi print resolution (8 dots / mm)

• Print speeds per second up to 12″ (305 mm / second)


• USB 2.0, high speed

• RS-232 Serial (RS-232C with DB9F connector; Configurable baud rate (2400 – 115,200kB), parity, and data bits. Stop bits at 1 or 2; Software (XON/XOFF), hardware (DTR/DSR or RTS/CTS) communication handshake protocols)

• 10/100 Ethernet: Supports networks internally integrated option that enables the use of WebView and Alert features

• Bluetooth® 4.1 (including Apple®)

• Dual USB Host

Printheads / Resolution

• Printhead 203 dpi (8 dots / mm)

• Printhead 300 dpi (12 dots / mm)


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