How Can I Print Direct-to-objects? Printing on Shapes – Expanding What’s Possible in Direct-to-Object Manufacturing

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How Can I Print Direct-to-objects? Printing on Shapes – Expanding What’s Possible in Direct-to-Object Manufacturing

Engineered Printing Solutions

February 26, 2026
During an interview with Mary Schilling from WhatTheyThink’s Cool Tools at Printing United, one theme surfaced again and again: manufacturers are increasingly focused on direct-to-object printing for three-dimensional products. While much of the print industry still thinks in terms of flat substrates, labels, and paper-based workflows, real-world manufacturing depends on decorating complex shapes, curved surfaces, and dimensional parts.

At Engineered Printing Solutions, this shift is something we see every day. The future of industrial printing lies in applying graphics, branding, and functional markings directly onto the product itself rather than onto a label applied later.

What is Direct-to-Object printing?

Direct-to-object printing removes labels, stickers, and secondary decoration steps from the manufacturing process. Instead of printing onto paper or film and applying it afterward, graphics are printed directly onto the part. This approach supports a wide range of materials including soft and rigid plastics, glass, metals, ceramics, and wood.

By eliminating labels, manufacturers reduce waste, simplify supply chains, and shorten production cycles. It also allows decoration to happen inline with manufacturing rather than as a separate downstream process.

How to Print on Three-Dimensional Products

Printing directly onto three-dimensional products introduces challenges that flat printing processes were never designed to solve. Most parts are not created with printing in mind. Curves, recesses, surface textures, and inconsistent geometry all affect how ink behaves once it is applied.

Addressing these challenges requires more than a print engine. It requires engineering, automation, and precise control over how parts are fixtured, oriented, and presented to the printing process. In many cases, solving the print challenge starts with solving the part-handling challenge first.

What is the difference between Pad Printing and Inkjet for Complex Shapes?

Historically, pad printing has played an important role in decorating complex geometry. As an on-contact process, pad printing can reach into crevices and conform to uneven surfaces that would be difficult for other technologies. That capability still makes pad printing relevant for certain applications today.

Inkjet approaches the same problem differently. As an off-contact process, inkjet jets droplets through the air rather than physically contacting the part. This allows products to remain in motion and enables much higher throughput. It also supports digital image control, faster changeovers, and more complex graphics than analog processes typically allow.

The challenge with inkjet is consistency. Precise drop placement and reliable adhesion must be maintained across varying shapes and materials. When those conditions are met, inkjet delivers significant advantages in speed, flexibility, and scalability.

Why is Surface Energy and Pretreatment important in direct-to-object printing?

Surface compatibility is often the most significant obstacle in direct-to-object printing. Even materials that appear identical can behave very differently when ink is applied. Surface energy determines whether ink spreads evenly or beads up and fails.

That is why pretreatment is frequently required in industrial inkjet workflows. Techniques such as flame, plasma, corona, and pyrosil treatment modify the surface to promote adhesion and image quality. Each application is evaluated individually, with inks and pretreatments tested together to determine the most reliable solution for long-term durability.

What is the role of Robotics and Automation in Industrial Inkjet Printing?

One of the most notable developments discussed at Printing United was the growing role of robotics in direct-to-object printing. Automation is no longer limited to loading and unloading parts. Robotic inkjet end-of-arm tooling allows the print system itself to move around the part rather than forcing the part to move through a fixed machine envelope.

This approach significantly expands the range of products that can be printed digitally. Large injection-molded components such as waste containers, safety equipment housings, or industrial panels often cannot fit under traditional pad printers or fixed inkjet systems. With robotic motion, those same parts can now be decorated efficiently and consistently.

How does UV Inkjet drive Production Efficiencies in Direct-to-object printing?

UV inkjet plays a critical role in making these workflows production-ready. UV inks cure instantly using LED technology, allowing parts to move directly from printing to assembly or packaging. The cured ink provides strong adhesion and surface hardness, often without the need for post-coating except in demanding outdoor or environmental applications.

This immediacy supports higher line speeds and tighter integration with downstream manufacturing processes, making digital printing a practical option for production environments rather than just prototyping.

What is the future of Direct-to-object printing?

What we are seeing in direct-to-object printing today is a broader shift in how manufacturers think about decoration. Printing onto three-dimensional products is no longer a niche capability. It is becoming a core manufacturing process for companies looking to reduce complexity, improve efficiency, and design more flexible production lines.

As inkjet, automation, and robotics continue to converge, the boundaries of what can be printed directly onto a product will continue to expand. The conversation is no longer about whether digital can handle complex shapes. It is about how far manufacturers are willing to push it.

Find out more about EPS’s printing solutions here: Engineered Printing Solutions: Company Page Admin | LinkedIn