Customized Carton Inkjet Printer for Packaging Lines in 2026

In an era where packaging is both the shop window and the supply-chain tracker for your product, having a reliable, high-quality printer on the line is non-negotiable. Whether you need bold large-character branding, high-resolution barcodes, or multi-colour logos printed directly onto corrugated cartons, the RNJet family has options built for throughput, uptime and low operational cost. Below I’ll walk through the features, benefits and real-world uses of the RNJet 140 BC (Bi-Colour) and RNJet 72 XL, so you can quickly decide which fits your packaging line – or how to combine them for different stations.

Direct Carton Marking (Printing) vs. Labelling

When you evaluate how to apply codes, barcodes, branding or regulatory information onto your cartons and cases, the choice typically comes down to two options: labelling (print-and-apply) or direct marking (printing directly onto the carton surface). Each approach has pros and cons – but increasingly, direct marking powered by RNJet industrial inkjet (or large-character inkjet) systems is proving the smarter choice for high-volume and flexible packaging lines.

Advantages of Direct Marking

• Increased speed and higher throughput
• Lower consumable and operational costs
• Greater flexibility and easier changeovers / variable data
• Cleaner, more sustainable packaging – less waste
• Reduced error risk, improved reliability, and lower maintenance overhead
• Larger print area and branding/graphics capability

RNJet 140 BC – four heads, bi-colour inkjet printer for customized cardboard box marking

The RNJet 140 BC is built for one thing: eye-catching, high-resolution carton marking at production speeds. Key capabilities:

• Four print heads and bi-colour output — the 140 BC supports multi-colour printing (bi-colour) so you can print logos plus production data in a single pass, without re-indexing or extra passes. This is ideal for branding directly on corrugated and for making critical info visually distinct.

• Large print height (up to 144 mm with multiple heads) — with multiple heads you can print very tall, multi-line messages or stacked logos on boxes.

• Standalone or networked control — runs from a robust 7″ touchscreen controller and can be networked (Ethernet) with the RN Windows software for central management of multiple printers — useful if you run several production lines.

• Suitable inks & fast drying — uses solvent and oil-based inks suitable for porous and many non-porous surfaces; drying times on non-porous materials are engineered for production line speeds.

Who should pick the 140 BC? Brands that need their logo and critical data to be highly visible (coloured logos + batch codes), manufacturers with multiple packaging formats who want one powerful head unit, or lines that need multi-line, multi-colour content without slowing down.

RNJet 72 XL – Economical, high-resolution box coding printer up to 72 mm high

The RNJet 72 XL is a workhorse for standard-height carton and case coding where crisp, high-contrast marks and fast throughput matter.

• Print height up to 72 mm with high resolution (up to 180 dpi) – ideal for clear text, scannable barcodes, and decent-sized logo prints directly on corrugated.

• Fast print rates (up to 90 m/min at 100 dpi) – it’s designed to keep pace with high line speeds while maintaining print quality.

• Cartridge-based / piezoelectric drop-on-demand – offers economical operation vs. label printing, with a large cartridge option and a printing system that’s tolerant of routine production environments.

• Flexible orientation and throw distance – prints at angles, side or downward, with up to ~15 mm throw distance, making it easy to mount in tight conveyor setups.

Who should pick the 72 XL? High-volume packers that need reliable, cost-effective carton coding – retailers, 3PLs, FMCG packers and logistics hubs that want barcodes and variable data on cartons without the expense of labels.

Operational benefits of using RNJet carton inkjet printers that matter on the line

• Lower per-unit cost than labels – printing direct saves label material and reduces label applicator maintenance and jams. RNJet models are explicitly positioned as economical alternatives to thermal label printing.

• Flexible data & short runs – changeover between SKUs and batches is software-driven (touchscreen controller or network), so short runs and personalized printing are simple.

• Industrial robustness – stainless controllers, dust/droplet resistance, and gravity-fed/piezoelectric printing options make these units suitable for real-world packaging environments.

• Wide ink selection – from standard solvent inks to pigmented whites and colours for the 72/140 lines, so you can print legible marks on brown corrugated or coloured cartons.

Real-world use cases

• Retail & e-commerce — print scannable barcodes + promotional logos directly on the ship case; eliminates separate branding labels.

• Food & beverage — lot/expiry data and bi-colour allergen or regulatory flags printed right on the corrugated. RNJet inks include pigmented whites and colours to stand out on brown board.

• Third-party logistics — high-speed barcode printing for sorting lines (72 XL) while reserving the 140 BC for special packs or promotional cartons.

• Manufacturing — serial numbers and traceability codes printed on batches at the end-of-line, with centralized job control via networked software.

With RNJet 72 XL and RNJet 140 BC, you aren’t just buying printers — you’re enabling a more efficient, higher-speed, lower-waste packaging operation that scales. Contact our sales team at +1 (905) 597 4978 or at info@rnjet.com.