Heidelberg Printmaster

Offset Printing

Small-format sheetfed lithography on a Heidelberg Printmaster — true Pantone spot colour, specialty inks, and the lowest cost per piece once the quantity climbs.

How offset lithography works

Offset works on a simple principle: oil and water do not mix. Your artwork is burned onto an aluminium plate — one plate per colour — and the plate is dampened so that only the image areas accept ink. That ink transfers first onto a rubber blanket cylinder, then offsets from the blanket onto the paper. Using the blanket as an intermediate step is what gives offset its clean, even ink laydown, even on textured stock.

Making plates and bringing the press up to colour takes time and materials. That fixed setup cost is why 200 pieces on offset is expensive — but it is also why 10,000 pieces costs far less per unit than any digital press can manage. Once the press is running, additional sheets are nearly free.

The economics in one line

Offset has a high fixed cost and a very low variable cost. Digital has no fixed cost and a flat variable cost. Wherever those two lines cross — usually 500 to 1,500 pieces — is where offset starts saving you money.

Our press: Heidelberg Printmaster

We run a Heidelberg Printmaster — a small-format sheetfed offset press with a maximum sheet of 12" × 18". That is a long way from the 40-inch sheets a large commercial plant would run, and it shapes what this press is genuinely good at.

It is the right machine for business cards, letterhead, postcards, flyers, small brochures, presentation inserts, and folder components in the low thousands. Heidelberg build quality means tight registration and consistent ink density sheet after sheet — the reason these presses stay in service for decades.

SpecificationDetail
PressHeidelberg Printmaster (small format)
Max sheet size12" × 18" (305 × 457 mm)
Min sheet size3.9" × 5.5" (100 × 140 mm)
Economical from~1,000 pieces
ColourCMYK process, Pantone spot, or both
Specialty inksMetallic, fluorescent, opaque white
Line screen175 – 200 lpi
Stock weight60 – 300 gsm
Registration±0.1 mm sheet to sheet
Typical turnaround5 – 10 business days

Need a sheet bigger than 12" × 18"? Slightly larger pieces can often run on our digital press (13" × 19"). Genuinely large-format work — full-size presentation folders, oversized posters — is produced through our trade partners. Send the specs and we will quote it either way.

True Pantone spot colour

This is offset's biggest technical advantage. A digital press builds every colour out of CMYK dots, which means a brand colour is always an approximation. Offset can run actual Pantone ink, mixed to the exact formula and applied by its own dedicated unit on the press.

If your brand lives or dies on a specific corporate blue appearing identically across a million pieces, offset is the only process that guarantees it. It also unlocks inks that CMYK physically cannot reproduce:

What offset is best for

🃏

Business cards & stationery

Letterhead, envelopes, compliment slips, and card runs in the thousands, all matched to the same Pantone brand colour.

📦

Small cartons & sleeves

Retail packaging that fits the sheet, then cut, creased, and glued. Pairs with custom cutting for prototypes.

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Direct mail campaigns

Large mailings where a fraction of a cent per piece adds up to real money across the drop.

📗

Booklets & reports

Saddle-stitched booklets and corporate reports that need consistent colour cover to cover.

🗂️

Folder components

Printed sheets and inserts for presentation folders, then cut and creased to shape with pockets and slits.

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Tickets & security print

Numbered stubs, UV-reactive inks, and perforated forms for events and transit.

Preparing files for offset

Offset is less forgiving than digital, because a mistake is not discovered until plates are already made. Please check:

Always approve a proof. Once plates are burned and the press is running, corrections mean starting over. A hard copy proof costs a fraction of a reprint.

Frequently asked questions

Why is offset so expensive for small runs?

You are paying for plates, press make-ready, and the setup waste sheets before colour comes up. Those costs are the same whether you print 100 or 100,000, so on small runs they dominate the price. Under about 1,000 pieces, digital is nearly always cheaper.

What is over/under delivery?

Offset runs traditionally deliver within about 10% of the ordered quantity, because setup waste and finishing losses vary. If you need a guaranteed exact count, tell us up front and we will run overs to cover it.

Can you reprint from plates later?

Plates degrade and are not kept long term, but your press-ready files and colour data are archived. A reprint means new plates, though we can match the original colour precisely from the retained data.

Can offset and digital be combined in one job?

Yes, and it is often the smartest option. Print the static shell offset for the volume savings, then digitally overprint the variable content. Add JetVarnish 3D embellishment on top if the piece needs it.

How many pieces before offset is worth it?

Business cards and postcards usually cross over around 1,000–1,500. Larger pieces like folders and brochures can cross over closer to 500. Send the specs and we will quote both processes side by side.

What is the largest piece you can print offset?

The press sheet is 12" × 18", so the finished piece must fit inside that once bleed and gripper margin are allowed for — roughly 11.5" × 17" of usable area. Anything larger goes on our 13" × 19" digital press or out to a trade partner.

Planning a large run?

Send us the quantity, flat size, page count, stock, and any Pantone colours. We will quote it on offset and digital so you can see exactly where the crossover falls.

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