The short answer
Thermal transfer printing melts ribbon onto the label facestock, giving an image that survives heat, light, abrasion and cold. Direct thermal prints without a ribbon and fades in service. Digital Label Services supplies thermal transfer labels, direct thermal stock and matched wax, wax-resin and resin ribbons across Australia, including freezer grade and synthetic constructions.
Digital Label Services · 7A Melissa St, Green Point NSW 2251 · 0431 942 464 · Monday to Friday, 8:30am–5:00pm
Send an enquiry
Tell us what you need labelled and we will come back with a tailored quote.
Prefer email? info@digitallabelservices.com.au
Two labels can look identical on the roll and behave completely differently six months later. The difference is usually whether the image was printed with a ribbon or burned into a heat-sensitive coating. That one choice decides whether a barcode still scans after a freezer cycle or a wash-down.
This page covers what separates the two printing methods, how wax, wax-resin and resin ribbons match to paper and synthetic facestocks, why cold and damp surfaces need their own adhesive, and how to specify rolls so they run cleanly. Send us the surface and the environment it lives in.
What is the real difference between thermal transfer and direct thermal?
Direct thermal uses no ribbon. The printhead heats a chemically coated facestock and the coating darkens where it is heated. Fewer consumables, one thing to load, lower cost per label. The image is a chemical reaction, and that reaction does not stop at the printer.
Thermal transfer uses a ribbon. Heat melts a pigmented coating off a carrier film and bonds it to the label surface, so the image sits on the facestock rather than inside it. It costs more, needs the ribbon matched to the stock, and survives conditions that erase direct thermal in weeks.
Direct thermal is the correct and cheaper choice for:
- Despatch and courier labels consumed within days.
- Scale, deli and fresh food price labels.
- Queue tickets, visitor passes and picking labels.
- Anything indoors, out of sunlight, and not rubbed or heated.
Why does direct thermal fade, and what does that rule it out of?
Three things attack the coating. Heat from a sealer, a shrink tunnel or a hot dock darkens the whole label until the text disappears into grey. Ultraviolet light bleaches it. Friction against a crate or the next carton polishes the image away, because nothing is bonded on top to protect it.
Plasticisers, oils and solvents finish the job. That rules direct thermal out of archival records, asset marking, chemical containers, outdoor storage, and anything that leaves a freezer and warms up. If a label must still be readable in twelve months, print it with a ribbon.
Which ribbon do you need: wax, wax-resin or resin?
Ribbon chemistry runs from soft and low energy to hard and durable. Moving up that scale buys resistance and costs printhead energy, speed and money. The correct ribbon is the cheapest one that survives the job on the facestock underneath.
Wax ribbons
Wax melts at the lowest energy and bonds to uncoated and matt paper, which covers most warehouse, carton and despatch work. It prints fast and cleanly, and it smudges: a fingernail, a strapping band or a damp glove will mark it.
Wax-resin ribbons
Wax-resin suits gloss and semi-gloss paper and some top-coated synthetics. It handles scuffing inside a carton, light moisture and mild chemical contact, and holds a finer edge for small text and tightly spaced barcodes.
Resin ribbons
Resin anchors to synthetics such as polypropylene, polyester and vinyl, and it is the only sensible answer for abrasion, solvents, oils, sterilisation and outdoor exposure. Resin on plain uncoated paper is wasted, because there is no topcoat to key into.
How does a mismatched ribbon and substrate fail a barcode scan?
A ribbon that will not anchor to the facestock gives ragged bar edges, voids inside the bars and weak contrast. To a person the label looks fine. A scanner reading edge transitions disagrees, and the failure shows up at the customer’s dock, not beside your printer.
Symbol quality is graded to ISO/IEC 15416:2025, the third edition published on 8 January 2025, which supersedes the withdrawn 2016 edition. Grades run 4.0/A down to 0.0/F, and GS1 sets the minimum at 1.5/06/670 for a retail point of sale symbol and 1.5/10/670 for GS1-128. Verify on the exact stock and ribbon you will run. Our barcode label printing covers that check, and GS1’s verification guideline sets out the method.
What does cold storage do to a label?
Cold is two problems. One is the temperature the adhesive survives in service. The other is the condition of the surface at the moment of application. A permanent adhesive can hold happily in a freezer once bonded, and still drop off a carton that was already frozen when the label went on.
Frost and condensation are films, and a film stops the adhesive wetting out. Apply at ambient before the product goes down wherever the process allows. Where labels must go onto frozen or damp goods, specify a deep-freeze adhesive formulated for a low minimum application temperature, and allow more wipe pressure and dwell time. Freezer grade thermal transfer labels are matched to the label stock and materials underneath them, never chosen separately.
For freezer and cold chain work, specify it this way:
- Synthetic facestock rather than paper, which softens as condensation forms.
- A resin ribbon, because thawed cartons abrade against each other in transit.
- A deep-freeze or cold-apply adhesive, quoted separately from a standard permanent.
- A full freeze and thaw cycle on your own packaging, then a rescan.
How should you specify rolls, cores and wound direction?
Most calls that start with the printer will not run these labels turn out to be roll specification rather than a fault. Four things have to be right: core diameter, outside diameter, wound direction, and the registration feature the media sensor reads, whether a die-cut gap, a notch or a black mark. Cores are commonly 25 mm, 38 mm or 76 mm.
Wound-out presents the printed face away from the core, wound-in presents it towards the core, and applicators are built for one or the other. Ribbons carry the same distinction, coated side in or coated side out, and the wrong one prints onto the carrier film. Roll capacity is capped by the maximum outside diameter the machine accepts, so confirm that before ordering larger rolls. Genuine consumables are supplied for every range we service.
Which ribbon and facestock combination suits the job?
Work down to the first row that survives your environment, and stop there.
| Print method | Facestock it works on | What it survives | When it is the wrong choice |
|---|---|---|---|
| Direct thermal, no ribbon | Heat-sensitive coated paper | Days to a few weeks indoors | Heat, sunlight, friction, solvents or any archival requirement |
| Wax ribbon | Uncoated and matt paper | Indoor handling, cartons, racking and despatch | Smudging, moisture or chemical contact matters |
| Wax-resin ribbon | Gloss and semi-gloss paper, top-coated synthetics | Scuffing, light moisture, fine text and dense barcodes | Continuous abrasion, solvents or outdoor exposure |
| Resin ribbon | Polypropylene, polyester, vinyl and other synthetics | Abrasion, solvents, oils, sterilisation, freezer and outdoor | The facestock is plain paper, or throughput matters more than durability |
Ribbon width should cover the full print area, and is normally specified slightly wider than the label so the label edge cannot wear a line into the printhead.
“Digital Label Services have delivered quality labels and consumables, cost savings and support for the last 7 months for our colour label printers ensuring that a key component of our business runs efficiently.”
Kim Jardine, General Manager, James Bennett P/L
Frequently asked questions
Can a thermal transfer printer run without a ribbon?
Many can, provided the machine has a direct thermal mode and you load heat-sensitive stock. Ordinary paper without a ribbon prints nothing. Switching modes changes the darkness and speed the label needs, so recalibrate rather than assume the old profile applies.
How can I tell whether the labels I already have are direct thermal?
Drag a coin or a fingernail firmly across the face. Friction heat marks direct thermal stock with a dark line and leaves thermal transfer stock unmarked. It is a five second test worth doing before ordering a ribbon for an unidentified roll.
Which ribbon should freezer labels use?
Resin on a synthetic facestock for anything cycling between freezer and ambient, because condensation and abrasion arrive together on the way out. Wax-resin on coated paper can be acceptable for chilled storage that stays chilled. The adhesive matters as much as the ribbon.
Does the ribbon need to be wider than the label?
It has to cover the full printed area, and is usually specified a little wider than the label itself. A ribbon narrower than the label leaves the printhead running on the label edge, which wears a permanent white line into every print after that.
Why is my print smudging as it leaves the printer?
Most often a wax ribbon on a gloss or synthetic facestock it cannot key into. Other causes are print speed too high for the ribbon, heat too low to melt it, or a topcoat never intended for thermal transfer. Send a printed sample.
Can you supply ribbons for a printer you did not sell?
Yes. Send the printer make and model, the ribbon width and length, the core size, and whether the current ribbon is coated side in or coated side out. A photograph of the old core with its label usually answers all of that.
Further reading
- Thermal Transfer vs Direct Thermal: Which Label Do You Need?
- Barcode Labels for Cold Storage and Freezer Environments
Want the ribbon and the stock matched properly?
Send your printer model, the label size and a photograph of the surface you are labelling. We will match facestock, adhesive and ribbon, supply thermal transfer labels as a sample, then quote the consumables.
Get a Personalised QuoteSpeak With Our Printer SpecialistsCall 0431 942 464
References and further reading
- ISO/IEC 15416:2025 — ISO. current edition of the 1D barcode print quality standard, published 8 January 2025
- 1D Barcode Verification Process Implementation Guideline — GS1. grading scale and the minimum grades for retail point of sale and GS1-128 symbols
- ISO/TS 18614:2016 Packaging – Label material — ISO. the parameters used to order, specify and compare self-adhesive label materials