Brother RuggedJet 4 Series

The Brother RuggedJet 4 Series is a rugged 4-inch mobile direct thermal printer family designed for demanding field, route, warehouse, manufacturing, transportation and public sector printing workflows. It is built for users who need wider mobile output than 2-inch or 3-inch mobile printers can provide, while still requiring a compact, battery-powered and wearable printer format. The series includes RJ-4235B and RJ-4255WB model families, with additional variants for linerless and charging-cradle-enabled configurations. The supplied SKUs include RJ-4235B, RJ-4235B-L, RJ-4235B-LF, RJ-4235B-LCP, RJ-4255WB, RJ-4255WB-L, RJ-4255WB-LCP and RJ-4255WB-LF. The RuggedJet 4200 Series uses direct thermal print technology. This means it does not require ink, toner or ribbon, making it practical for mobile workflows where users need fast printing with fewer consumables to manage. It is suitable for delivery receipts, customer invoices, returned goods receipts and labels, sales orders, public sector documents, eCitations, parking violations, evidence labels, warning notices, inspection notices, permits, office tags, serial number labels, picking and packing labels, shipping labels, barcode labels and mobile forklift printing. The key advantage of the RuggedJet 4200 Series is 4-inch mobile printing. The printers support media up to 114 mm / 4.49 inches wide and a maximum print width of 104 mm / 4.09 inches. This makes the series suitable for larger mobile labels and documents that would not fit comfortably on 2-inch or 3-inch mobile printers. Maximum print length is 3 metres / 118.1 inches, with a minimum print length of 12.7 mm / 0.5 inch. Print performance is designed for mobile productivity. The series prints at 203 dpi resolution with a maximum speed of up to 5 ips / 127 mm per second. This is suitable for mobile barcode labels, route documents, operational receipts and field paperwork where speed, readability and portability matter more than high-resolution graphic detail. The RuggedJet 4200 Series supports receipt media, gap or black mark labels, tags and linerless media on specific LF variants. Supported media thickness depends on media type: receipt, tag and label ranges are listed separately in the source material. Roll diameter is up to 58 mm / 2.28 inches. Core diameter is 19 mm to 25.4 mm for labels and 25.4 mm for tag or linerless label media. Peeler support is not listed for this series. The printers are designed to be worn, carried or mounted. The series includes a reinforced belt clip, docking connectors and fast-release docking points. The physical size is 153 mm × 159 mm × 68 mm, and weight is 717 g without battery or 850 g with battery. This positions the RuggedJet 4200 Series as a mobile printer, not a desktop printer, despite its 4-inch print format. Rugged construction is a central selling point. The source material highlights reinforced parts, industrial-grade buttons, molded rubber housing and enhanced drop protection. The series is rated IP54 and is tested for multiple drops to concrete from 2.1 m / 6.9 ft under controlled conditions. Tumble testing is listed as 500 cycles from 1 m without the roll cover opening, breaking or malfunctioning. Shock and vibration exposure is listed as MIL-STD-810G, third-party verified. The operating temperature range with battery is -15°C to +50°C. With optional AC adapter, the range is -10°C to +40°C, and with optional car adapter it is -10°C to +50°C. Charging temperature is 0°C to +40°C. Operating humidity is 10% to 90% non-condensing. These specifications support mobile use in field and warehouse environments, while still requiring attention to charging and accessory conditions. Battery life is an important part of the mobile value proposition. The RuggedJet 4200 Series uses a rechargeable lithium-ion smart battery rated at 7.2 V and 3.00 Ah. Battery yield is listed as 10,000 labels under Brother test conditions using 50 mm × 30 mm labels with 11% print density at 23°C. Battery charging time is 4 hours, and the battery cycle rating is 300 charge / discharge cycles. Connectivity varies by model family. The series supports USB-C, Bluetooth Dual Mode with Classic and Low Energy support and passive NFC. Bluetooth profiles listed in the supplied material include SPP, OPP, HCRP, GATT and iAP for iOS / MFi access. Wi-Fi is associated with the RJ-4255WB variants and supports infrastructure and wireless direct modes. AirPrint is also positioned as part of the connected feature set on suitable configurations. The network-capable configurations support modern wireless security, including open system, WEP, WPA/WPA2-PSK, WPA3-SAE and enterprise authentication methods such as EAP-FAST, PEAP, EAP-TLS and EAP-TTLS. IPv4 and IPv6 protocol support includes DHCP, DNS resolver, mDNS, LPR/LPD, raw port / Port 9100, IPP/IPPS, FTP, SNMP, HTTP/HTTPS, TFTP, ICMP and Web Services Print functions, depending on network configuration. The RuggedJet 4200 Series also supports software integration through common command languages. Supported commands include Raster, ESC/P, P-touch Template, ZPL emulation and CPCL emulation, including CPCL page print mode and CPCL line print mode. This helps the printers fit into existing mobile printing, warehouse, route accounting, public sector and enterprise applications. Barcode support is broad for mobile label and receipt workflows. Supported linear symbologies include Code 39, ITF, EAN-8, EAN-13, UPC-A, UPC-E, UPC/EAN extensions, Codabar, Code 128, GS1-128, Postnet, GS1 DataBar, Code 93, MSI / Plessey and Intelligent Mail Barcode. Supported 2D codes include QR Code, Micro QR, MaxiCode, PDF417, MicroPDF417, Data Matrix and Aztec Code. The user interface includes one LED for error condition and battery health, three menu buttons, one power button and a backlit monochrome LCD. Printer memory is listed as 256 MB RAM and 64 MB Flash, with a 42 MB user area. The source states that there is no real-time clock. The series supports mobile device management and field configuration workflows. The supplied material highlights one-touch pairing, remote updates and configuration with the Brother Mobile Deploy app. This can help reduce hands-on maintenance and simplify larger mobile printer deployments. The box contents include printer, battery, belt clip and documents. Optional accessories include extra batteries, shoulder strap, belt clip, DC vehicle adapter, AC charger, battery charger, carrying cases, mounts and charging cradles. One-bay and five-bay charging cradles are available for the LCP variants. The RuggedJet 4200 Series is covered by a 2-year Premier Limited Warranty according to the supplied material, with free phone support for the life of the product. Overall, the Brother RuggedJet 4 / RuggedJet 4200 Series is a rugged 4-inch mobile direct thermal printer family for users who need larger labels and mobile documents in tough working environments. Its strongest value lies in 4-inch mobile output, 203 dpi print quality, up to 5 ips speed, direct thermal simplicity, USB-C, Bluetooth Dual Mode, NFC, Wi-Fi and AirPrint options on selected models, smart battery operation, 10,000-label battery yield, IP54 sealing, 2.1 m drop protection, MIL-STD-810G shock and vibration exposure and support for labels, receipts, tags and linerless variants.

Datasheet

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