2 Part vs 3 Part NCR Forms Explained

Duplicate or triplicate is the first decision on any NCR order, and it is worth about ten seconds of thought if you ask the right question, or a year of workarounds if you don't.

The question is not “how many copies would be nice”. It is how many people need to hold a record of this transaction at the moment it happens.

How the sheets work

NCR carries a mark from one sheet to the next chemically. The back of a sheet holds microscopic capsules of colourless dye; the face of the sheet below holds a clay coating that reacts with it. Pen pressure bursts the capsules and the mark appears.

That gives three kinds of sheet:

• CB (Coated Back) — the top sheet. Dye on the reverse, nothing on the face, because nothing needs to transfer onto it.
• CFB (Coated Front and Back) — a middle sheet. Clay on the face to receive a mark, dye on the back to pass one on. This is the clever one.
• CF (Coated Front) — the bottom sheet. Receives a mark and passes nothing on.

So a 2 part set is CB over CF. A 3 part set is CB, CFB, CF. Add more parts and you simply add more CFB sheets in the middle.

This matters for one practical reason: the third copy costs more than a sheet of paper. CFB stock is meaningfully dearer per sheet than CF, because it is coated on both sides. A 3 part set is not simply a 2 part set plus one more sheet — it is a bit more than that.

Colour order

Our standard collation is white, yellow, pink, top to bottom. That order is near-universal in the UK, so your customers and suppliers will read it without being told: white is the original and goes to whoever the form is for, the tinted copies are internal.

We hold other tints and can collate in any order you like — just tell us when you order. Some customers match the colour to the department that keeps it, which is a small thing that makes a filing system read itself.

When 2 part is right

Two parties, one transaction. The customer keeps the white, you keep the yellow.

• Receipts and invoices issued on the spot
• Delivery notes where the recipient signs and keeps one
• Order pads taken at a counter or over the phone
• Job sheets for a one-person operation
• Quotations and estimates left with a customer

If you find yourself photocopying the yellow copy so someone else can have one, you needed 3 part.

When 3 part earns its cost

Three parties, or two parties plus a process step in between.

Jewellers — repair intake is the textbook case. The customer holds a receipt, a workshop docket travels with the item, and accounts keep the third. Three physical copies because the item and the customer separate.

Manufacturing and warehousing — despatch notes where the driver, the customer and the office each keep one. Goods movement between production, stores and accounts.

Distilleries — anywhere product moves under paperwork that has to stand up to scrutiny at every handover.

Garages and vehicle workshops — customer, workshop and accounts all working from the same job.

Home services and repairs — the engineer keeps one, the client signs one, the office files the third. No photographs of paperwork, no reconciling at the end of the week.

Compliance paperwork — waste transfer notes, hazardous waste notes and contractor sign-off sheets are three part by design, because the process assumes three holders.

The honest limit

We print 4 part and above to order, but it is worth a conversation first. Every extra sheet needs the pen pressure to reach further, and by the fourth sheet you are relying on people to press harder than they naturally do. A ballpoint on a firm surface will manage it; a rollerball on a soft pad will not.

If you need four or more copies routinely, it is often better to run 3 part and print a separate summary, or to move that step to a system. We will tell you that rather than sell you a set that disappoints.

A quick test

Picture the moment the form is filled in. Count the hands it has to go into before anyone walks away. That number is your part count — and if the answer is two, don't pay for three.

Ready to order?

2 part in A5 and A4; 3 part in A5 and A4. Both come as glued pads or perforated books — see pads vs books — and the wider picture is in our complete NCR buying guide.

Not sure? Call 0141 237 1924 and describe the job. We'll tell you what you actually need.