This article explores HP Indigo’s digital printing technology, including Liquid Electrophotography (LEP) and LEPX, and briefly touches on its current portfolio. It highlights the HP Indigo V12 digital label press, and AI-powered automation tools that enable offset-matching print quality at 120 m/min on virtually any substrate.
In the competitive landscape of digital printing, where innovation fuels the race, HP Indigo paves the road to digital transformation with technological evolution that positions the company as a persistent force defining the industry's future with leading print quality.
The company’s systematically innovative approach addresses the market’s most pressing challenges and readily adapts its technology to meet them with an install base of nearly 7,000 presses WW. As a result, our customers regularly capture new, profitable opportunities. For example, by addressing our customers' need to print duplex on very thick substrates, we successfully tapped into the lucrative sports card market. Producing these popular Variable Data Printing cards enables print service providers to establish a strong presence in this profitable sector.
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Digital Printing Precision
At the heart of HP Indigo's technological advantage lies its Machine Control Software (MCS), a sophisticated structure that acts as the central neural system for the entire printing process. Unlike distributed control systems that create bottlenecks and complexity, MCS infuses intelligence directly into the hardware, synchronizing every sensor, print engine, ink system, and paper-handling component with surgical precision.
HP Indigo’s Series 6 digital presses represent a fundamental architectural shift - from distributed to centralized control - that has dramatically improved development speed, simplified debugging, and enhanced overall stability. The cutting-edge EtherCAT communication network doesn't just enable faster feature upgrades; it creates a foundation for continuous evolution that keeps presses current as technology advances.
This is the Future-Ready promise of HP Indigo's Digital Printing in action.
Liquid Electrophotography: Technology Crafted for Industry Needs
HP Indigo's core printing technologies - LEP (Liquid ElectroPhotography) and LEPX - were created to optimize the union of paper and ink. While water-based inkjet fails to dry on non-absorbing substrates and UV inkjet creates brittle prints that can't withstand flexibility requirements - LEP technology enables offset-matching print quality on virtually any substrate.
The technology's ‘substrate agnosticism’ isn't marketing speak - it's a fundamental capability that eliminates the uncertainty plaguing other digital technologies. By drying ink before transferring it to the substrate, LEP technology prevents distortions while delivering the natural offset appearance as the ink wraps around paper fibers without deep penetration. The result: additional ink savings on top of the dramatic benefits of the concentrated HP Indigo ElectroInks, which use a fraction of the amount of ink consumed by inkjet alternatives.
LEP provides unmatched ink versatility, enabling printers to reach up to 97% of the color gamut with spot colors, in addition to specialty inks including Silver ElectroInk, invisible inks, fade-resistant formulations, and a comprehensive white ink portfolio. For food packaging applications, where UV inkjet faces regulatory challenges, LEP provides total compliance.
The groundbreaking new-generation LEPX technology multiplies this advantage through six engines working simultaneously, printing multiple colors in parallel. This isn't just faster printing - it's a new category of productivity that transforms the economics of digital production.
The fastest digital label press in the industry
The recently launched HP Indigo V12 Digital Press embodies LEPX technology's potential. Printing at 120 meter per minute, it's the fastest digital label press in the industry - known for its ability to match analog speeds while maintaining digital advantages.
The V12 covers digital label printing from mid to long runs with digital printing values of minimal makeready, personalization capabilities, and sustainability benefits. And whereas in the analog world, several hundred meters of media are discarded as waste before a machine stabilizes - with HP Indigo presses, the first sheet is usable - a testament to precision engineering that eliminates waste while maximizing efficiency.
Customer confidence in the V12 is measurable: beta customers have ordered a second machine - a clear indicator that the technology delivers on its promises in real-world production environments.
Beyond the Press: Intelligent Automation
HP Indigo's technology leadership extends far beyond the press, encompassing the entire production environment. Partnerships with industry-leading experts complete a solid ecosystem of dedicated solutions. The company is actively implementing intelligent automation and AI-powered solutions that anticipate the industry's evolution toward autonomous production.
Partnerships with companies like MoviGO have created the first Autonomous Mobile Robot (AMR) for paper transport in the digital print industry, while AI-based tools are revolutionizing quality control, decision-making, predictive maintenance, and performance optimization. The proprietary PrintOS operating system offers software and tools that automate production, boost productivity and print quality, and infuse creativity into the production floor. Variable data printing (VDP) capabilities enable personalized print runs with unique content on every sheet.
AAA 2.0, an AI-based defect detection system, automatically identifies print defects, discards faulty pages, and reprints them without human intervention. PQ Maestro enables a four-minute morning routine that establishes print quality parameters for 24 hours, dramatically reducing setup time and eliminating human error. These aren't futuristic concepts - they're production realities that demonstrate HP Indigo's commitment to practical innovation.
The Lights-Off Nonstop Digital Printing Vision
The trajectory is clear: a transition to ‘Lights-Off Press’ operations with fully autonomous production. In the meantime, this vision promotes one operator overseeing ten machines, not only to reduce labor challenges and costs - but to fundamentally improve consistency, efficiency and sustainability.
Digital printing reduces 90% of the analog-equivalent media setup waste, which amounts to cutting 20% of the carbon footprint of the printed job. Advanced print modes and automation setups can minimize energy consumption further, by up to 25%, using media and ink economically. Innovation in press subsystems and supplies ensure extended lifecycles and enhance resource efficiency. HP Indigo strategically reduces carbon emissions of printing operations by designing our presses to be more productive, which promotes high efficiency and low waste, and in turn reduces energy consumption per job.
This future-ready philosophy is embedded in press architecture that prioritizes backward compatibility, modular system design, and built-in capabilities for remote updates and diagnostics. Customers aren't just buying today's technology; they're investing in a platform that continuously evolves.
A Winning Portfolio
The HP Indigo 6K+ Digital Press, unveiled at Labelexpo Barcelona 2025, demonstrates how market leadership translates into continuous improvement. Built on the market-leading 6K platform, it incorporates robust hardware, advanced software, and intelligent automation tools managed by the innovative SmartControl System to maximize uptime and productivity.
Similarly, the reliable and fast HP Indigo 120K Digital Press - our current commercial print market bestseller - showcases how productivity improvements cascade throughout the product line. Next Generation HP Indigo Supplies, including the newly formulated, concentrated CMYK+ ink and the new PIP+ with doubled longevity, reduce operator workload, waste, and CO₂ emissions while improving performance. HP Indigo is also best equipped to enable the creation of print experience applications, with embedded electronics, QR codes, or security elements.
The HP Indigo 200K Digital Press now includes an add-on slitter to simplify label production alongside digital printing for flexible packaging, while the versatile HP Indigo 18K Digital Press prints on folding carton and ultra-thick substrates - demonstrating how established platforms continuously expand their capabilities to meet our customers’ needs.
It was the faith and resolve of our customers that reinforced us in pioneering digital flexible packaging a decade ago, and while the market has yet to adopt the advantages of digital printing – the over 400 strong installed base and the applications which no other technology can support bode well for the future.
A Legacy of Print Quality Leadership, a Future of Constant Innovation
HP Indigo's technological leadership isn't just about superior machinery — it's about enabling the Future of Work in print. Through complete workflows, specialized inks, time- and emission-saving supplies, and customized solutions, we empower customers to adapt, scale, and thrive in an increasingly demanding and dynamic market.
From commercial printing to labels, from flexible packaging innovation to folding carton applications, we have systematically expanded our portfolio while maintaining our core advantage: a digital print technology so powerful, that it makes transformation inevitable. HP Indigo will lead this evolution to define what comes next.