Ink Jet Academy
Theory of Ink Jet Technology

University of Westminster, London, UK
Monday 28th - Tuesday 29th June, 2010

Course fee - GBP 740, Euro 850, US$ 1,175
Course registration

Location & accommodation

Back to Summer School 2010
COURSE FOCUS
The Ink Jet Academy provides a programme and format to get an expert start in the ink jet industry, to get an update or to open up new ink jet fields.

Understanding the fundamentals is a prerequisite to any development.   The Ink Jet Academy offers a one and one-half day course covering the basic theory of all the diverse types of ink jet technology in use today.  Learn how the printheads work, what materials are used in their fabrication and the theory of operation.  Learn about inks and media, how they are formulated and the supply and support systems.  This course assumes a basic scientific knowledge and will provide a useful background to anyone entering the ink jet industry or seeking an efficient update of ink jet technology.

COURSE LEADERS
Mike Willis, Managing Director
Pivotal Resources Limited

Cambridge, UK

Mike Willis is the founder and Managing Director of Pivotal Resources, an international marketing and technical consultancy specialising in electronic printing and the graphic arts.  He has worked in these industries for the past 20 years, accumulating considerable experience in a wide range of imaging technologies.  Recognised as an industry expert, he regularly speaks and gives tutorials at printing conferences in Europe and North America.  In addition he is the publisher of Directions, a service that monitors ink jet patents and significant product launches.

In May 1990 Mike was a founder member of Xaar, a company set up to exploit high resolution piezo ink jet technology.  Later, while responsible for business development, he promoted the technology, forging links with printer companies world-wide resulting in Xaar's first licensee, a major Japanese business equipment manufacturer.

Mike began his career at Gestetner Limited, working on a variety of photocopier projects, and was responsible for the development of image processes.  He graduated from the Polytechnic of Central London in 1976 with Honours in Photographic Sciences.

Dr Alan L Hudd, CEO
Xennia Technology Limited

Letchworth, Hertfordshire, UK

In April 1996, Dr Hudd founded Xennia Technology; the world’s first independent contract ink jet technology house dedicated to developing new ink jet inks for both the industrial and office ink jet industries. 

Since then, Dr Hudd has grown Xennia into a leading player in the rapidly emerging market for industrial ink jet technologies.  Under Dr Hudd, Xennia has developed a unique set of ink jet chemistry, engineering and problem solving capabilities that has resulted in a number of important technology innovations, especially in the field of ink jet dispensing of difficult materials. Xennia is part of the Royal Tencate Group.

In 1987, Alan joined Domino Printing Sciences and spent eight years as the Fluids Technology Manager, developing a wide range of ink jet ink for diverse applications and is credited with a number of patents and significant innovations within the industrial ink jet industry.  Prior to Domino, he spent almost eight years with the Ministry of Defence and Royal Ordnance in the UK, developing new solid polymer rocket propellants for air to air missiles.

Dr Tim Phillips, Technical Sales Manager
Xennia Technology Limited
Letchworth, Hertfordshire, UK

Tim is Technical Sales Manager at Xennia, the leading one stop ink jet solutions house, responsible for the R&D Contracts and Customised Solutions areas.  This requires a strong working knowledge of the latest ink jet technology, and brings him into contact with a wide range of clients working at the leading edge of new applications.  These include printed electronics, deposition of functional materials, and bio and medical applications as well as the latest graphics applications – anything that is at the forefront of this exciting technology.

Prior to joining Xennia, Tim has worked in a variety of industries in both technical and sales roles.  For four years, Tim worked on the physics and chemistry of liquid crystal and organic semiconductor materials for the UK Government Royal Signals and Radar Establishment, developing the basic science of these novel materials.  He then worked on compound semiconductor device physics at the Defence Evaluation & Research Agency and QinetiQ over a period of twelve years.  During this period, Tim published over 50 journal and conference papers and filed over 20 patents.  Tim’s background has given him a broad understanding of organic chemistry, molecular interactions, semiconductors and electronics, all of which are key areas of ink jet technology and its applications. 

Tim graduated from the University of Cambridge in 1991 with an MA Honours degree in Natural Sciences, and completed his PhD in liquid crystal physics and chemistry at the University of Bristol in 1994.  He is currently nearing completion of an Executive MBA at the University of Warwick.

Course outline
Monday June 28th, 2010

10:00 - 11:00 am Registration
11:00 am Course begins

INTRODUCTION
• Course overview
• Types of ink jet technology
• Brief history
• Drop on demand technologies
• Thermal & piezo ink jet
• State of the art
• Office & SOHO markets & applications

INDUSTRIAL APPLICATIONS
• Evolution of industrial ink jet printing
• Technology advances
• Printheads & printers
• Ink technologies
• Current status & emerging applications

12:30 - 1:30 pm Lunch

INK TECHNOLOGY
• Understanding the ink jet printing process
• Designing an ink jet ink
- Piezo drop on demand
- Continuous ink jet
- Thermal ink jet
• Properties influencing ink jet performance
• Typical performance issues
• Diagnosing typical ink problems
• Ink types: solvent, aqueous & UV cure
• Testing an ink for reliability: Methods & characterisation

DOD PRINTHEAD DESIGNS AND VENDORS
• Thermal ink jet
• Piezo ink jet
- Piston mode designs
- Roof mode actuators
- Stacked piezo technology
- Shear mode designs
- Silicon printheads

5:30 pm Adjournment

6:00 - 7:00 pm Reception

Tuesday June 29th, 2010

9:00 am Course begins

MATERIALS FOR INK JET INKS
• Typical material requirements for successful ink jet printing
• Polymers, dyes & pigments
• Pigment dispersion technology & processing techniques
• Key suppliers
• Advances in UV curing ink technology
• Formulation considerations
• Challenges, properties & current performance

DOD PRINTHEAD DESIGN CONSIDERATIONS
• Drop ejection frequency
• Crosstalk
• Printhead life
• Temperature control
• Drop placement accuracy
• Considerations for page arrays
• Greyscale techniques
• Drive waveforms

PRINT & IMAGE QUALITY
• Factors affecting print quality
• Technologies to improve print quality
• Improving image quality

12:30 - 1:30 pm Lunch

SYSTEM DESIGN ISSUES
• Nozzle maintenance
• Drop detection
• Filling/bubble removal
• Ink supply and replacement

FUTURE DEVELOPMENTS
• Evolution of current technology
• Hardware & ink technology advancements
• Status & developments of ink technology
• Important future applications
• Recent & projected trends

5:00 pm Adjournment