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Marking and Coding

Pushing the Limits of HP45 (TIJ) Technology

The Challenge

In industrial coding—printing batch numbers, expiration dates, and barcodes—reliability is the only metric that matters. Many systems based on HP45 (Thermal Inkjet) technology operate in harsh factory environments where the printheads are often mounted without any capping system (the mechanical seal that protects nozzles during idle time).

We encountered clients with extreme operational requirements: they needed the printer to deliver a perfect “first-print-out” after prolonged line stoppages—stretching from several days to an entire week of inactivity—without any manual cleaning, purging, or capping.

Our Solution

We re-engineered the chemistry of HP45-compatible inks to defy the traditional trade-off between drying time and nozzle stability. Our formulation focuses on advanced molecular engineering to manage evaporation at the nozzle interface:

  • Extreme Opening Time (Decap): Through a proprietary balance of high-performance solvents and humectants, we extended the opening time from minutes to days. Our ink remains fluid and ready to fire even after being exposed to open air for 168 hours (one week).
  • Zero-Capping Reliability: Our formula prevents the formation of a solid “crust” or “plug” over the nozzles, which is the typical cause of failure in uncapped heads. This ensures an immediate, crisp restart in any environmental condition.

 

The Result

  • Maximum Operational Efficiency: Immediate “Monday morning” restarts as if the machine had never stopped, eliminating the need for operator intervention.
  • Waste Elimination: No more partial or unreadable codes on the first items of the production run after a shutdown.

 

Significant ROI

Drastic reduction in Total Cost of Ownership (TCO)—less ink wasted in purging, zero head-maintenance time, and a total reduction in rejected products due to poor code quality.

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Liane Altenscheidt

Operations and Compliance Manager
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Liane Altenscheidt is responsible for operations, administration, and compliance at WetDot. She ensures that internal processes, financial administration, and regulatory requirements are managed efficiently, supporting smooth project execution.

She coordinates day-to-day operations, financial workflows, and internal processes, enabling the technical team to focus on development and innovation. A key part of her role is managing compliance-related topics and supporting customers with regulatory documentation.

Liane specializes in the coordination and preparation of Safety Data Sheets (SDS), ensuring that all documentation is structured, complete, and aligned with relevant regulations. Her structured approach and attention to detail provide the operational backbone of WetDot.

Dr. Chris Nicholas

Industrial Inkjet Consultant
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Chris Nicholas is an industrial inkjet specialist with over 30 years of experience in polymer chemistry, imaging technologies, and inkjet ink development. His career spans from early work in polymer systems and energy materials to leading roles in industrial inkjet R&D and consultancy.

He began his career in research roles at the University of Salford and the University of Manchester, followed by work with Kodak and Xennia, where he led R&D and EU-funded industrial inkjet projects across textiles, photovoltaics, and functional materials.

Chris later served as Lab Manager and Principal Scientist at Tonejet, before moving into consulting roles with ARMOR Industrial Inks and founding Smart Chemistry Ltd. Today, he supports industrial partners in the development, manufacturing, and application of advanced inkjet inks and dispersions.

His expertise combines deep polymer chemistry knowledge with extensive experience in industrial inkjet systems, enabling the development of robust, application-focused solutions.

Dr. Giovanni Manca

R&D Director and Co-Founder
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Giovanni Manca brings over 30 years of experience in imaging technology, spanning from analog photography to advanced industrial inkjet systems. His career is defined by deep chemical expertise, technical leadership, and a strong focus on innovation.

He began his career in the 1990s in the R&D division of 3M (later Ferrania), developing high-performance photographic emulsions for X-ray films. He later joined Armor (now Altkin), where he built and led the development of the company’s desktop inkjet ink portfolio, improving color gamut and light fastness.

In 2015, Giovanni led Armor’s entry into industrial inkjet, establishing and managing a dedicated R&D team focused on high-performance inks for a wide range of substrates. Today, he combines technical excellence with a strong commitment to regulatory compliance and industrial standards, ensuring reliable and market-ready solutions.

Carsten Rühling

Managing Director & Co-Founder
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Carsten is a chemist specializing in water-based inkjet inks with over 10 years of experience in industrial R&D. As Managing Director and Co-Founder of WetDot, he focuses on translating complex inkjet challenges into practical, production-ready solutions.

Before founding WetDot, he led ink development projects and managed R&D teams at Altkin/Armor, working across a wide range of water-based inkjet technologies and applications. His expertise combines deep formulation knowledge with a strong understanding of printhead behavior and industrial production requirements.

Carsten’s work is driven by the development of robust ink systems and the ability to turn complex technical problems into reliable, real-world solutions.