Introduction

Look at a well-printed brochure, a catalogue, a cereal box or a product label, and there is a good chance it was produced by offset printing. For more than a century, offset lithography has been the workhorse of commercial printing, valued for its sharp detail, consistent colour and low cost per copy on longer runs.

Digital printing has grown rapidly and is ideal for many jobs, but offset remains central to the printing industry. According to Smithers, offset lithographic printing, including sheetfed, heatset and coldset, generated about US$311.9 billion in global revenues in 2024. Smithers expects its value to decline only slowly through the end of the decade, as digital takes share in some applications while offset remains dominant in others.

This article explains how offset printing works, what happens at each stage, where it excels, how costs work and when to choose it. It also explains how Dsigngo Group’s prepress, press and finishing teams work together to deliver consistent results.

What is offset printing?

Offset printing transfers an inked image from a printing plate to a rubber blanket, and then from the blanket onto paper or board. The image is “offset” from the plate to the blanket before it reaches the paper, which gives the process its name.

It is based on lithography, which relies on a simple principle: oil and water do not mix. The printing plate has image areas that attract oily ink and non-image areas that attract water. When the plate is dampened and inked, ink sticks only to the image areas.

Most commercial offset printing uses four process colours: cyan, magenta, yellow and black (CMYK). Tiny dots of these colours, printed in precise patterns, combine to create full-colour images. Additional spot colours, such as a specific brand colour, can be printed using pre-mixed inks.

A short history

Lithography was invented in the late eighteenth century, using flat stones to print images. Offset printing, which adds the rubber blanket between plate and paper, developed in the early twentieth century and quickly became the dominant commercial printing method. The blanket protects the plate, prints well on textured papers and allows high speeds.

Over the decades, offset presses gained more colour units, automated controls and faster make-ready. The biggest recent changes have come from digital workflows: computer-to-plate imaging, colour measurement systems and automated press settings that make offset more precise and efficient than ever.

Sheetfed and web offset

There are two main types of offset press:

• Sheetfed offset prints on individual sheets of paper or board. It is used for brochures, catalogues, company profiles, posters, stationery, folding cartons and many labels. It offers excellent quality and can handle a wide range of papers and boards.
• Web offset prints on continuous rolls of paper at high speed. It is used for very long runs such as newspapers, magazines and large catalogues.

Most commercial and packaging print for businesses is produced on sheetfed presses.

Step by step: how an offset job is produced

1. Artwork and file preparation

Every job starts with artwork. Files should be prepared to print specifications: correct size, bleed, safe zones, high-resolution images, CMYK colour with the right colour profile, and fonts embedded. Our blog article on preparing print-ready files explains this in detail.

2. Prepress and preflight

The prepress team checks files using preflight software and manual review. They look for low-resolution images, missing fonts, colour issues, missing bleed and other problems that could affect the result. Files are then imposed: arranged on the printing sheet in the right order and orientation, so the job can be printed, folded and trimmed efficiently.

3. Proofing

Before printing, the customer approves proofs. A PDF proof checks content and layout. A colour-accurate contract proof shows how the colours should look on press. For folded or bound jobs, a blank dummy or mock-up shows size, paper and binding.

4. Plate making

Each colour needs its own printing plate. Modern printers typically use computer-to-plate (CTP) systems, which image plates directly from digital files, improving accuracy and consistency. A four-colour job needs four plates per sheet side.

5. Make-ready

Make-ready is the set-up of the press for a specific job: mounting plates, loading paper, adjusting ink and water, and aligning colours so they print in exact register. The press operator prints test sheets and adjusts until the colour matches the approved proof.

6. The press run

Once the job is approved on press, the full run begins. Operators monitor colour throughout, measuring control bars printed on the sheets and adjusting ink settings to keep colour consistent from the first sheet to the last.

7. Drying

Printed sheets must dry before finishing. Depending on the inks, paper and press, drying may happen naturally, with special drying systems or with coatings that speed up the process.

8. Finishing

Finishing turns printed sheets into finished products. It may include trimming, folding, creasing, laminating, varnishing, foil stamping, embossing, die-cutting, gluing and binding. Our article on print finishing explains these options.

9. Inspection and packing

Finished items are inspected for colour, registration, trimming, folding and finishing quality, counted and packed for delivery.

Offset inks

The ink used affects colour, drying, durability and suitability for different products:

• Conventional sheetfed inks dry through absorption into the paper and oxidation. They are widely used for commercial print.
• Quick-drying formulations reduce waiting time before finishing.
• UV-curing inks dry instantly under ultraviolet light, which allows immediate finishing and printing on non-absorbent materials.
• Low-migration inks are designed for food packaging, to reduce the risk of ink components transferring into food.
• Metallic, fluorescent and other special inks create distinctive effects.

Choosing the right ink depends on the product, the material and how the printed item will be used.

Common offset problems and how they are prevented

The strengths of offset printing

• Image quality. Offset produces sharp text, fine detail and smooth colour.
• Colour consistency. Measured colour control keeps long runs consistent.
• Spot colours. Brand colours can be printed with special inks for accurate matching, including metallic and fluorescent effects.
• Wide range of materials. Offset handles many papers and boards, including heavy board for packaging.
• Low unit cost on longer runs. Once the press is set up, each additional copy costs relatively little.
• Finishing options. Offset sheets work with a wide range of finishing processes.
• Repeatability. With recorded settings and standard materials, reprints can closely match earlier runs, which matters for brands and packaging.

The limitations

• Set-up costs. Plates and make-ready add fixed costs, which make very short runs expensive per copy.
• Time. Plate making, make-ready and drying add time compared with digital printing.
• No variable data. Every copy of an offset job is the same, so personalisation requires digital printing.
• Changes are costly once plates are made. Late corrections may require new plates and fresh make-ready, so careful proof approval matters.

How offset pricing works

Offset costs have two main parts:

• Fixed costs: prepress, plates, make-ready and set-up of finishing equipment. These are largely the same whether you print 500 or 5,000 copies.
• Variable costs: paper, ink, press running time and finishing time, which rise with quantity.

Because fixed costs are spread across more copies, the unit cost falls as quantity rises. This is why ordering 2,000 brochures may cost only a little more than ordering 1,000. However, ordering far more than you need wastes money and paper if the extra copies go out of date.

Sheet sizes and imposition

Offset presses print on large sheets, and several pages or items are usually printed together on one sheet. Planning how items fit on the sheet, called imposition, affects cost and waste. For example, a brochure size that fits efficiently on a standard sheet uses less paper than a slightly larger custom size that leaves wasted space.

Discussing the format with the printer early can save money. Small changes, such as adjusting a brochure’s size by a few millimetres or combining several items on one sheet, can significantly improve efficiency.

Paper and board for offset

Offset can print on a wide range of materials:

• Coated papers in gloss, silk and matt finishes for brochures and catalogues.
• Uncoated papers for letterheads, notebooks and natural-looking materials.
• Boards for covers, business cards, folders and folding cartons.
• Speciality papers with textures, colours or recycled content.

Paper choice affects colour, feel, durability and cost. Our blog article on choosing paper explains the options.

When to choose offset

Offset is usually the best choice when:

• You need medium to long runs, often from several hundred or thousand copies upwards, depending on the job.
• Colour accuracy and consistency are critical.
• You need spot colours or special inks.
• You are printing on heavy board, textured papers or packaging materials.
• You need premium finishing.

Digital printing is often better for very short runs, personalised items, fast turnaround and prototypes. Our blog article on offset versus digital explains the choice in detail.

Quality standards in offset printing

Professional offset printing follows recognised standards. The ISO 12647-2 standard defines process control for offset printing, and characterisation data such as Fogra51 for coated paper and Fogra52 for uncoated paper describes how standard printing conditions should look. Proofs are compared with printed sheets under standard viewing light, as set out in ISO 3664.

Our article on print quality standards explains these standards and our colour management process in more detail.

Offset in packaging

Offset is widely used for folding cartons and many labels because it delivers high-quality graphics on board and paper at competitive costs for medium and long runs. Packaging adds requirements beyond commercial print: exact fit to dielines, barcode quality, food-safe inks for food packaging, durable finishes and precise die-cutting and gluing. Our article on printing labels and folding cartons explains these requirements in detail.

The future of offset

Offset continues to evolve. Automation is reducing make-ready times, making shorter runs more economical. Colour measurement and closed-loop controls improve consistency. Faster-drying inks allow quicker finishing. At the same time, offset increasingly works alongside digital printing, with each used where it performs best. For businesses, this means more choice and better results, as long as each job is matched to the right process.

The printing industry in Sri Lanka

Sri Lanka has a large and varied printing industry. Industry representatives have estimated that there are around 5,000 printers in the country, from small local presses to large commercial and packaging printers. Most printing raw materials, especially paper, are imported, so costs are affected by exchange rates and global prices. Industrial production data reported in 2025 showed strong growth in printing and reproduction output compared with the previous year.

For businesses, this means choosing a printer carefully: one with reliable access to materials, consistent quality and good planning can protect deadlines and budgets.

Getting the best results from your printer

Customers can help their printer deliver better results:

• Share the brief early, including quantity, size, paper, finishing and deadline.
• Ask for paper samples and a blank dummy before deciding.
• Supply correctly prepared print-ready PDFs.
• Approve proofs carefully, checking text, images, colours and folding.
• Provide brand colour references, such as Pantone numbers.
• Allow enough time for proofing, printing, drying and finishing.
• Keep records of approved proofs and specifications for future reprints.

Planning for reprints

Many printed items, such as brochures, stationery and packaging, are reprinted regularly. To keep reprints consistent:

• Use the same paper and finishing where possible.
• Keep the approved proof and colour references.
• Ask the printer to record press settings and job specifications.
• Check reprint samples against the original before approving.
• Plan quantities so stock lasts until the next update, without large amounts going out of date.

Our offset process at Dsigngo Group

Dsigngo Group combines design, prepress, printing and finishing, so print jobs move smoothly from idea to delivery:

• Our designers prepare artwork to print specifications from the start.
• Our prepress team preflights files, prepares impositions and produces proofs.
• Plates are prepared and the press is set up to match the approved proof.
• Our press operators monitor colour throughout the run.
• Our finishing team handles trimming, folding, lamination, foiling, die-cutting and binding.
• Every job is inspected before delivery.

An illustrative example

Here is an illustrative example. It does not describe a specific client.

A hotel group needs 3,000 copies of a 32-page brochure for travel fairs in Dubai and Europe, with a soft-touch laminated cover and a foil-stamped logo.

• Artwork. Designers prepare the brochure at A4 with bleed, using the hotel’s brand colours defined for coated paper.
• Prepress. Files are preflighted, imposed for saddle stitching and proofed.
• Proofs. The client approves a PDF proof, a contract proof for the cover photography and a blank dummy for the paper weight.
• Printing. The inner pages and cover are printed on offset presses, with colour measured throughout the run.
• Finishing. The cover receives soft-touch lamination and foil stamping, and the brochures are saddle-stitched and trimmed.
• Delivery. Brochures are inspected, packed in cartons and shipped in time for the first travel fair.

Frequently asked questions

What is the minimum quantity for offset printing?

There is no fixed minimum, but offset becomes cost-effective when set-up costs can be spread across enough copies. For small quantities, digital printing is often better value.

Can offset printing match my brand colour?

Yes. Brand colours can be matched closely using CMYK where possible, or printed exactly using a spot colour ink.

How long does an offset job take?

It depends on the job, quantity and finishing. Allow time for artwork, proofing, approval, printing, drying and finishing. Your account manager will confirm a schedule.

Can you print both offset and digital?

Many print projects combine both: offset for the main quantity and digital for short runs, samples or personalised versions. Your account manager will recommend the best method for each item.

Is offset printing environmentally friendly?

Offset can be efficient for longer runs, and its environmental impact depends on paper choice, inks, waste management and print quantities. Ordering realistic quantities and choosing responsibly sourced paper both help.

Conclusion

Offset printing remains the standard for high-quality, consistent, cost-effective printing on medium and long runs. Understanding how it works, from prepress and plates to press control and finishing, helps businesses plan better print projects and get better results.

Dsigngo Group brings design, prepress, offset printing and finishing together, so every job is planned, proofed, printed and inspected with care.

Planning a print project? Request a quote from our print team.

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Sources

• Smithers, offset litho market research (2024 revenues and outlook), as reported by Labels & Labeling and Smithers.
• ISO 12647-2, Fogra51 and Fogra52 characterisation data; ISO 3664.
• Sri Lanka Association of Printers and industry reporting (Business Today, Sunday Times); industrial production data reported by The Morning (2025).