How do I know which print method my job needs?

Ask for the same specification quoted digitally and plate-based, at your quantity and at the next band up. Four numbers show you the shape of both cost curves and where they cross for your particular job — which is more reliable than any rule of thumb, because the crossover moves with colour count and finishing.

Why does colour count change the price so much on offset but not digital?

Offset uses one plate and one press unit per colour, so a five-colour job carries five plates and five setups. Digital builds every colour from the same four process inks in one pass, so the colour count barely registers. It is the single biggest structural difference between the two routes.

Can I start on digital and move to offset later?

Yes, and it is a sensible path while volumes are uncertain. Expect a small colour shift when you switch, because digital builds a colour from process inks while offset can lay it down as a named spot ink. We will show you both on a proof before the changeover run.

What is litho lamination and when is it worth it?

A paper sheet is printed offset and then bonded to corrugated board, giving offset print quality on a substrate that normally only takes flexo. It costs more and adds a production stage, so it is worth it when a corrugated pack is customer-facing and photographic quality genuinely matters.

Does the substrate change which method I can use?

Considerably. Rotogravure is film only. Flexography suits corrugated, film and label stock. Offset needs a flat sheet. Screen handles fabric and thick rigid stocks that nothing else will take. In practice the substrate often narrows the choice before quantity does.

Why does the same file look different on kraft than on white board?

Kraft is unbleached and absorbent, so ink sinks in and the brown substrate shows through. Colours read warmer and duller and white needs an opaque underbase. Design for the stock from the start rather than correcting a white-board design afterwards.

What is washboarding and can it be avoided?

The corrugated flutes beneath the liner showing faintly through large solid areas. It is inherent to printing directly on corrugated rather than a fault, and it is more visible on coarser flutes. Litho-lamination avoids it by printing a paper sheet and bonding it on.

Do I need a press proof or is a digital proof enough?

A digital proof catches layout and content. It cannot predict how a colour sits on your actual substrate, because a monitor is backlit and a carton is not. For any colour that is a brand asset, approve a press-printed sample on the real stock.

How many colours can I print?

On digital, as many as the artwork contains, since everything builds from the same process set. On offset and flexo each colour is a plate and a press unit, so the practical ceiling is what the press has — and every additional one adds tooling and setup.

Can two production runs be made to match exactly?

On offset and flexo, closely — we hold the ink formulation and plate specification, so run-to-run variation is tight. On digital the tolerance is wider. If products sit side by side on a shelf across several reorders, that difference becomes visible and points to litho.

Packaging Printing Methods Guide

Print method is decided by arithmetic more often than by quality. One route carries a fixed setup cost and low running cost; another carries no setup and higher running cost. Where those curves cross depends on quantity, colour count and finishing.

The five methods

Method	Setup	Efficient run	Colour	Substrates
Digital	None	50 – 2,000	Good, process build	Board, film, labels
Offset litho	Plate per colour	2,000+	Excellent, spot native	Flat board, wraps, labels
Flexography	Plate per colour	2,500+	Good on solids	Corrugated, film, bags
Rotogravure	Cylinders, high cost	10,000+	Excellent	Flexible film
Screen	Screen per colour	100+	Heavy ink lay	Fabric, thick stocks

Digital printing

No plates, so no setup cost to amortise. Unit price is close to flat regardless of quantity, which makes it the correct answer for short runs, prototypes, seasonal variants and market tests.

Its unique capability is versioning. Ten variants of one carton print in a single run at no extra setup, because there are no plates to change.

It also removes several days from the schedule, which matters when a deadline is fixed.

The trade is colour tolerance. Digital builds every colour from process inks, so a precise brand colour is approximated rather than matched. For most work that is invisible. For a brand whose colour is a recognised asset, the difference shows when two production runs sit side by side.

Offset lithography

Ink transfers from plate to blanket to substrate. One plate per colour, and once colour is running to target it produces sheets fast and consistently.

Best colour accuracy of the board methods, and spot colours print directly from named inks rather than being approximated. Holds fine detail in small type better than any alternative.

The cost structure is the mirror of digital: high to start, low to continue. Each additional colour is another plate and another press unit, which is why a five-colour offset job and a five-colour digital job diverge so sharply in price.

Flexography

Plate-based, used mainly on corrugated, film and label stock. Handles solid colours and line work well; struggles with fine gradients and photographic detail on fluted or absorbent surfaces.

Printing directly onto corrugated also brings washboarding — the flutes beneath the liner show faintly through large solid areas. It is inherent to the process rather than a fault, and it is more visible on coarser flutes.

Where photographic quality is needed on corrugated, litho-lamination prints a paper sheet offset and bonds it to the board. Better result, higher cost.

Rotogravure

Engraved cylinders, very high setup cost, outstanding quality and speed at volume. Only viable on flexible film runs above roughly ten thousand units.

Screen printing

Ink pushed through a mesh screen. Lays down a thick ink film, which is why it suits fabric, thick rigid wraps and applications needing heavy opaque coverage. Each colour needs its own screen and pass.

It is also the reliable route for printing light ink onto a dark substrate, where the ink film has to be dense enough to sit on top rather than sink in.

A worked example

A folding carton, two colours, no finishing:

Quantity	Digital	Offset
250	Cheapest	Plate cost dominates
1,000	Usually cheaper	Close
2,500	Close	Usually cheaper
10,000	Higher per unit	Clearly cheaper

Now change one variable. Take the same job to five colours and the offset side gains three more plates, pushing the crossover later. Take it to six artwork variants instead of one and offset needs six plate sets, which usually removes it from consideration entirely regardless of total volume.

That is why the honest answer to “which is cheaper” is always a question about colours and variants rather than quantity alone.

What actually goes wrong

Approving colour from a screen. A monitor is backlit and a carton is not. For any colour that matters, approve a printed proof on the actual substrate.

Forgetting the substrate absorbs ink. Uncoated and kraft stocks pull ink in, so colours read softer and duller than the same file on coated board. Design for the stock rather than correcting afterwards.

Ordering to reach a price break. A better unit price on stock that becomes obsolete before it is used is not a saving. Quantity should follow realistic consumption.

Ignoring reprint consistency. If a product reorders several times a year and sits on shelf beside earlier runs, colour drift between runs becomes visible. That points to offset with a held ink formulation, even at a quantity where digital would otherwise win.

Finding your crossover

Ask for the same specification quoted digitally and plate-based, at your quantity and at the next band up. Four numbers reveal the shape of both curves.

Be honest about the quantity you will use rather than the one that produces the best unit price. Stock that becomes obsolete before it is used is not a saving.

Where a run sits near the crossover, factor in the probability of a design change. Flexibility has a value that does not show in the unit price, and the underlying cost mechanics explain why the curve bends where it does.

Printing Methods Guide