A 4-inch model that succeeds the ZT230 and weighs less than the ZT411

The ZT231 is the 4-inch industrial printer that Zebra designated as the successor to the discontinued ZT230. Its print width is 104 mm, the same as the ZT411, but at 9.1 kg it is more than 7 kg lighter than the ZT411's 16.33 kg.

The printer measures H 279 x W 241 x L 432 mm and sits on a workbench. It has a metal frame with a plastic housing, and the cover folds twice as it opens and has a large clear window.

4.3-inch touch display and automatic calibration

Settings are changed on the 4.3-inch color resistive touch display on the front. The status indicator is a three-color LED. When the power is turned on or the head is closed, the printer feeds 2-3 labels and sets the media length on its own.

The ZT230 topped out at 152 mm per second, while the ZT231 reaches 305 mm per second at 203 dpi.

Print speed by resolution

ResolutionPrint speedNarrowest barcode barMax continuous print length
203 dpi (standard)51-305 mm/s4.9 mil (about 0.125 mm)3,988 mm
300 dpi (optional)51-203 mm/s3.3 mil (about 0.084 mm)1,854 mm

ZPL II is the standard printer language. EPL formats run only on the 203 dpi model, and EPL line mode is for direct thermal models only.

Label roll and ribbon specifications

Labels can be 19.4-114 mm wide and 0.076-0.25 mm thick. The limit is 203 mm OD for rolls on a 76 mm core and 152 mm OD for rolls on a 25 mm core.

Ribbons are 40-110 mm wide and 450 m long on a 25.4 mm core, and only ribbons wound with the ink side out are used. For black mark media, the mark density must exceed 1.0 ODU and the background must be 0.3 ODU or less for the sensor to distinguish the mark.

Cutter, peel, and liner rewind options

With the front guillotine cutter, labels are cut from 25.4 mm long. The peel option dispenses labels one at a time and handles labels down to 12.7 mm. Liner rewind is a factory-installed option that winds the entire liner from one 8-inch media roll. An applicator interface for connecting to an automatic label applicator is also optional.

RFID models include an RE40 reader/encoder and encode UHF EPC Gen2 V2.1 and ISO/IEC 18000-63 tags. The minimum tag pitch is 16 mm.

Cleaning and printhead replacement

The mechanical parts are self-lubricating, so no oiling is needed. Clean the printhead, platen roller, media sensors, peel bar, and media path with alcohol or compressed air, and wipe the housing with a lint-free cloth. The ZT231 printhead is designed to fit genuine Zebra parts only.

The Windows driver and manuals are at ZT231 driver download.