Comparing Bonded and Thermal Rolls for Office Use

Two Roll Types, Two Very Different Technologies

If you run a shop, café, salon or small office in the UK, you have probably stared at a till roll catalogue and wondered why some rolls cost more than others. The answer usually comes down to one thing: whether the roll is bonded or thermal. They look similar on the shelf, they both feed out of a printer, and they both produce a receipt. Underneath, though, they work in completely different ways, and choosing the wrong one for your machine is the fastest way to a jammed printer and a queue at the counter.

Bonded rolls are ordinary paper coated on one side. They need an ink ribbon or cartridge inside the printer to transfer text onto the page. Thermal rolls are coated with a chemical layer that turns black when a heated print head passes over it. No ribbon, no ink, no mess — just heat doing the work.

How Each Type Prints

An impact printer — the sort that makes that familiar mechanical chatter as it prints — uses a bonded roll. A ribbon sits between the print head and the paper, and tiny pins strike through to leave the characters behind. Because the ink is physically pressed into the paper, the print is robust and the roll itself is very stable. It does not discolour when left near a radiator or on a sunny windowsill.

A thermal printer is silent, faster, and has far fewer moving parts. There is no ribbon to replace, which means less maintenance and lower running costs per receipt. The trade-off is that the paper is sensitive — to heat, to sunlight, to certain plastics and even to some hand creams. Leave a thermal receipt on a car dashboard in July and you will come back to a blank slip.

• Impact printer: bonded roll plus ribbon, noisy, durable print, low paper sensitivity.
• Thermal printer: thermal roll only, quiet, quick, print can fade over time.

Matching the Roll to Your Machine

This is the part that catches people out. You cannot simply swap a thermal roll into an impact printer or vice versa — the machine will not print, and in some cases the coating can gum up the mechanism. Check the printer model before you order, then confirm three measurements:

• Width: 57mm is standard for handheld card machines and smaller tills; 80mm is the norm for EPOS tills and busy café counters.
• Roll diameter: the outer size of the wound roll, which determines how much paper fits in the compartment. Common sizes are 57mm, 65mm and 80mm.
• Core diameter: usually 12mm or 25mm for 57mm rolls, and 25mm or 40mm for 80mm rolls. A mismatched core will rattle or refuse to turn.

Also check the paper weight. Thermal rolls are typically sold at 48gsm to 55gsm, while bonded options tend to sit slightly heavier. A thinner roll gives you more metres per roll and fewer changes, but can curl more in humid weather.

Receipt Quality, Fading and Record Keeping

For everyday customer receipts, thermal wins on speed and cost. But if you need records that stay legible for years, think carefully. HMRC expects businesses to keep sales records for six years, and a thermal receipt that has faded to a grey smudge is not much use in an audit. Most accounting is now digital, so the paper copy matters less than it used to — but for anything you file physically, bonded is the safer choice.

There are also warranty and hygiene angles. Some thermal papers use BPA or BPS in the coating, and BPA-free thermal rolls are widely available if that concerns you or your staff handle receipts all day. Anyone who touches hundreds of thermal slips an hour should be washing their hands before eating, regardless of the coating.

Costs, Storage and Everyday Practicalities

Thermal rolls usually look more expensive per roll but work out cheaper overall, because there is no ribbon to buy and no ribbon to change. Bonded rolls are often cheaper per unit, yet you need to factor in ribbon replacements, plus the time spent swapping them mid-service.

Storage matters more than most people expect. Keep thermal rolls away from direct sunlight, radiators and hot back rooms. Stack them flat rather than on their ends, and use the oldest stock first. A box of thermal rolls left in a baking stockroom for a year will print faintly from day one. Bonded rolls are far more forgiving and will happily sit in a cupboard for years.

• Busy till, high volume: thermal, every time.
• Quiet office, long-term filing: bonded is often the better fit.
• Card machine receipts: almost always 57mm thermal.
• Kitchen order printers: thermal, but keep them away from heat lamps and steam.

Making the Choice Simple

Start with the printer, not the price. Find the make and model, check the width, roll diameter and core size, then decide how long your receipts need to last. If your machine is thermal, buy thermal. If it takes a ribbon, buy bonded. Order in sensible bulk — a box of 20 or 50 rolls is usually cheaper per unit and saves a mid-week panic order — but not so much that it sits around going stale.

Keep a spare roll beside every till and a spare ribbon beside every impact printer, and you will never find yourself scribbling totals on the back of an envelope during the lunchtime rush. Get those basics right and your point-of-sale supplies become one of the few things in your business you never have to think about twice.