Citizen CL-S631II 4-Inch Desktop Label Printer, 300 dpi, Thermal Transfer, 360 m Ribbon, USB, Serial, Black

The Citizen CL-S631II (CLS631IINEBXX) is a 4-inch thermal transfer desktop label printer with a metal mechanism, built for warehouses, labs, retail back offices and manufacturing that need industrial-style durability on the desk.

It prints at 300 dpi up to 104 mm wide and 100 mm/s, takes 360 m ribbons with ink in or out, holds rolls up to 125 mm inside the printer (200 mm on an external holder), and connects over USB and RS-232. Built-in Zebra ZPL2, Eltron EPL2 and Datamax emulations switch automatically.

• Citizen CL-S631II printer (300 dpi, thermal transfer)
• Power cord (internal power supply)
• Labels, ribbon and interface cable not included

• Long ribbons: 360 m ribbons (ink in or out, wax, wax/resin or resin) mean fewer changes than desktop printers limited to 74 m or 300 m.
• Media: labels 12.5–118 mm wide and 63.5–254 µm thick, rolls up to 125 mm inside or 200 mm on an external holder, 25 mm core.
• Easy loading: the Hi-Lift metal mechanism opens wide for quick ribbon and label changes, and ARCP adjusts ribbon tension automatically to prevent wrinkling.
• Fine print: 300 dpi keeps small text, 2D codes and logos sharp on small product, pharmacy and electronics labels.
• Drop-in replacement: Zebra ZPL2, Eltron EPL2, Datamax DMX and CBI BASIC with automatic switching run existing label formats without changes.
• Sensors: fully adjustable gap, notch and reflective black-mark sensing handles almost any label stock.

• Network printing: no Ethernet or Wi-Fi in this configuration; both are optional cards.
• Cutting or peeling: tear-off only; cutter and basic peeler are dealer options.
• Wide labels: maximum print width is 104 mm.
• Top speed: 300 dpi prints up to 100 mm/s; the 203 dpi CL-S621II reaches 150 mm/s.