Choosing a Date-Coding Technology (CIJ, Laser, TTO, Thermal Inkjet): What the Evidence Can and Cannot Settle

Compare the four technologies on a 5–7 year total cost of ownership, not a purchase price

Three independent buying guides converge on the same method: model total cost of ownership over a 5–7 year horizon including energy, consumables and expected maintenance. And ask for a full five-year estimate rather than a purchase price⁹³⁰.

The cost areas to demand are consistent across them. Initial investment (price, installation, commissioning, line integration), operating cost (electricity, compressed air, labour, cleaning), materials consumption and waste, maintenance (wear parts, service access, spares) and long-term output stability¹⁹.

That framing matters for coding because a date/lot coder is an add-on to the line, and add-ons raise both upfront cost and machine footprint²⁶²⁸. Coding therefore feeds two decisions at once: the TCO you are modelling and the floor space you have left.

Scope the coding station early rather than treating it as a late accessory. When you issue the RFQ, ask each supplier for the same five-year cost breakdown in the same cost areas, so the four technologies arrive in a comparable format.

The sources give you the cost areas but no coding-specific figures, so the numbers themselves have to come from your suppliers and your own line data.

Rule out any quote that omits a cost area

A quote that lists only the printer price cannot be compared with one that lists consumables and service. Use the same cost areas for every technology so the four quotes line up line by line¹⁹.

• ✓Initial investment: machine price, installation, commissioning and line integration
• ✓Operating cost: electricity, compressed air, labour and cleaning
• ✓Materials and waste: consumable consumption, yield, trim waste and rejected packs
• ✓Maintenance: wear parts, service access and spare parts
• ✓Long-term value: output stability, uptime, format flexibility and expected service life
• ✓Coding station footprint and its effect on line layout, since add-ons raise both cost and footprint

Do not select on datasheet speed — require a trial on your own product

Rated throughput figures on datasheets are typically measured under ideal lab conditions, and real-world throughput is almost always lower once changeover, cleaning and operator-dependent tasks are included⁹. A quoted units-per-minute figure therefore tells you little about what the coding station will do on your line.

The practical response is to make a live trial a condition of selection. Ask suppliers to run your product on their demo line, on camera, at your target speed, because a machine that performs well on a standard test product can behave very differently on yours⁹.

For coding specifically, the trial is also the only place you can see whether the code actually lands on your substrate at your line speed. The sources publish no substrate, adhesion or legibility data for any of the four technologies.

Set the trial terms before you compare prices: your product, your package format, your target speed, and the code content you actually print.

Screen compliance before technical evaluation

Compliance is a screening criterion, not a tie-breaker. Food and pharma packaging equipment sourcing typically expects food-grade or pharma-grade contact materials, FDA/EU-compliant components, CE/UL certification and HACCP or GMP documentation²⁸.

And labelling regulation varies by country, which adds technical and legal hurdles¹⁵.

• ✓Contact-material grade for anything touching product, and FDA/EU-compliant components
• ✓CE, UL or equivalent regional safety certification for your market
• ✓HACCP or GMP documentation where your facility requires it
• ✓Country-specific labelling rules for the markets you ship to, checked separately from machine compliance
• ✓Risk assessments and compliance certificates requested upfront, since remediating gaps after installation is more disruptive

Contract for reliability instead of accepting MTBF figures

Reliability evaluation should go beyond MTBF spec-sheet figures to the build quality of wear components, spare-parts availability and lead time, and access to local or regional service technicians³². MTBF is a number on a sheet; the things that decide your downtime are the wear parts, the spares pipeline and who can reach the line.

Predictive maintenance using IoT sensors — vibration, temperature, cycle counts — is described as a standard expectation on modern packaging equipment rather than a premium add-on³². Treat it as a baseline question rather than an upgrade you pay extra for.

Put the commitments in the contract. Response times, guaranteed spare-parts availability and performance guarantees tied to measurable metrics are the terms that make a reliability claim enforceable³³.

The specific figures in that source come from a filling-machine context, so use them as a template for the shape of the clause and set your own values against your line.

Decide which supplier tier to shortlist

Tier-1 packaging equipment suppliers differentiate through broad portfolios, strong global service networks and continuous R&D, while mid-tier and regional manufacturers compete on customised, application-specific machines and flexible financing or retrofit options³⁵. That split tells you what each tier is likely to be good at, not which is better for your line.

If your site runs multiple lines across regions, the service-network argument carries weight. If your requirement is a specific substrate or format that needs application engineering, the customised end of the market is where that work tends to sit³⁵.

Whichever tier you approach, verify the same way: a live demonstration or video trial on your actual product, specifications confirmed in writing, safety certifications, references. And clarification of lead time, integration support, training, warranty and after-sales response times³⁴.

Where the sources disagree or fall short

Two things are worth testing rather than trusting: whether MTBF is a usable reliability metric, and whether any published figure can rank the four coding technologies.

What the sources do not establish

• No source in this set addresses CIJ, laser marking, TTO or thermal inkjet by name for date coding on packaging, so no technology can be ranked against another.
• No capital cost, consumable cost (ink, solvent, ribbon, printhead), maintenance cost or energy consumption figures exist for any of the four coding technologies.
• No line speed data (units/min or m/min) is published for any coding technology.
• No substrate compatibility or adhesion data for paper, board, film, glass, metal or coated surfaces per coding technology.
• No dpi, contrast, legibility or abrasion and moisture durability data for date codes.
• No ink migration limits, EU 10/2011, FDA ink or BRC requirements for coding inks are established here.
• No footprint, utility (power, air, exhaust) or changeover-time data for coding equipment.
• No MTBF, maintenance interval or spare-parts availability data for coding equipment.
• No delivery lead time, installation time or local service coverage data for coding equipment suppliers.
• The SLA response times and spare-parts availability period cited as contract templates come from a vendor-tier source about cosmetic filling machines, not coding equipment; set your own values.