Executive Summary
When it comes to back label numbering, sequence integrity and uptime are everything. The TeslaJet NP45 provides the simplicity and compactness of cartridge-based thermal inkjet technology without sacrificing industrial-grade reliability. Based on the globally trusted HP 45a 0.5" printhead technology, this highly modular system mounts easily onto existing web presses, rewinders, or finishing lines. Whether you are printing simple batch codes, sequential numbers, or variable barcodes on the back of label liners, the NP45 delivers clean, 600 dpi print quality with unmatched ease of use.
Key Advantages
Compact Web Integration: The low-profile printhead design mounts easily into tight spaces on existing label rewinders and continuous web lines.
Zero-Mess Maintenance: Snap-in disposable HP cartridges provide clean operation with no complex cleaning routines or fluid pumps, maximizing line uptime.
Ultimate Substrate Flexibility: Print on almost any label liner. Swap cartridges to switch between aqueous inks for porous paper liners and solvent inks for coated or poly-backed liners.
Modular Configurations: Available in print widths of 0.5", 1.0", 1.5", 2.0", 4.0", or fully custom setups to match your specific web width and numbering requirements.
Cost-Effective Scaling: Entry-level pricing combined with disposable or bulk ink delivery drastically lowers both initial capital expenditure and ongoing maintenance costs per code.
Technical Specifications
Frequently Asked Questions
What is a label numbering machine?
An inkjet unit that prints sequential numbers, matching codes, or barcodes on labels as they run through a rewinder or press. The TeslaJet NP45 does this on the back of the liner or on the face inline, so numbered and matched label sets come off the rewinder finished.
Can I add sequential numbering to labels on my existing rewinder?
Yes. The NP45's low-profile head mounts on existing label rewinders, presses, and finishing lines without a major retrofit.
What ink prints on a poly label liner?
Solvent cartridges for poly-coated and plastic liners, aqueous cartridges for paper liners. The NP45 swaps between them in seconds, so one unit covers both label types.
Why does thermal inkjet hold quality on long numbering runs?
Because the printhead is built into the HP 45a cartridge, every cartridge change is a fresh head. Fixed-head systems drift over long sequential runs; the NP45 does not.
What is back-of-label numbering used for?
Matching label sets, tracking, lottery and promotional codes, and audit numbering that must not appear on the face. It is the standard method for sequentially numbered or matched labels in narrow-web converting.
