Inkjet Academy

Theory of inkjet technology

17-18 September 2018

Novotel Barcelona City Hotel, Barcelona, Spain


Knowledge of the technology behind any industry is essential to its development. The Inkjet Academy course covers the basic theory behind the many types of inkjet technology used today and aims to give your understanding of the industry an expert start.

The course will show you how printheads work, the materials used in their fabrication and the theory of their operation. You will also learn how inks are formulated and used, as well as about ink supply and support systems. The course examines how drops are formed, travel and behave on the substrate surface. Fundamental aspects of printer operation such as nozzle maintenance and print quality are also covered.

Presented by Mike Willis of Pivotal Resources and Dr Alan Hudd of Alchemie Technology, the course assumes a basic scientific knowledge and is designed to provide useful background information for anyone entering the inkjet industry, seeking an update on today’s technology or looking for further fields of development.

Course Programme


09:00 Session begins

Drops in Flight

  • Drop placement accuracy
  • Drop break-off
  • Drop impact & spread
  • Mist control

Inkjet Ink Materials and Dispersions

  • Range of materials and ink chemistries
  • Evolution of inkjet inks
  • Evolution of dyes
  • Pigments and dispersion technology
  • Dispersion theory
  • Polymers and additives
  • Processes and manufacturing

System Design Issues

  • Ink supply
  • Nozzle maintenance
  • Mist control

Substrates and Interactions

  • Papers & coated papers
  • Films, rigid substrates
  • Bleed & intercolour bleed
  • Pre & post coatings
  • Adhesion
  • Requirements versus applications
  • Drying
  • UV curable materials
  • Monomers
  • Oligomers
  • Photoinitiators
  • UV curing
  • Electron beam curing

12:30-13:30 Lunch

13:30 Session begins

Print and Image Quality

  • Factors affecting print quality
  • Printhead-ink-substrate
  • Greyscale methods
  • Drop detection
  • Banding, single pass issues
  • Drying effects
  • Missing nozzle detection
  • Missing nozzle compensation

Inkjet Applications

  • Coding, marking, mailing, addressing
  • Wide format graphics
  • Industrial decoration - décor & laminates
  • Ceramic tiles
  • Textiles
  • Commercial printing
  • Labels & packaging
  • Printed electronics, bio-medical & 3D printing

Emerging Technologies

  • Kodak Stream
  • Memjet
  • HP PageWide technology
  • Landa Nanography
  • Lead-free piezo
  • Speed & resolution trends

17:30 Course ends


12:30 - 13:30 Registration

13:30 Course begins

Introduction to Inkjet

  • Course overview
  • Types of inkjet technology
  • Drop on demand technologies
  • Thermal and piezo inkjet
  • Evolution of inkjet markets
  • Inkjet patents

Inkjet Ink Technologies

  • Ink types: aqueous, solvent, oil, phase change & UV cure
  • Dyes & pigments
  • Inkjet ink formulations

Drop Production

  • Thermal inkjet
  • Piezo inkjet
  • Continuous inkjet
  • Bulk piezo
  • Deposition requirements
  • Drop ejection frequency
  • Crosstalk
  • Reliability
  • Life issues

Inkjet Inks

  • Inkjet ink design
  • Understanding the inkjet printing process
  • Drop formation
  • Properties influencing piezo inkjet ink performance
  • Testing an ink for reliability: methods & characterisation

17:30 Session ends

18:00 - 19:00 Reception

Join us and enjoy wines, beers, canapés and good company!



Mike Willis
Managing Director, Pivotal Resources, Cambridge, UK

Mike Willis is the Founder and Managing Director of Pivotal Resources, an international marketing and technical consultancy specialising in digital printing. He has worked in this industry for the past 30 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 inkjet patents and significant product launches.


Dr Alan Hudd
Founder & Director, Alchemie Technology, Cambridge, UK

Dr Hudd is Director and co-founder of Alchemie Technology Ltd, an independent contract development and consultancy company to the industrial inkjet industry. Alchemie is developing and commercialising a range of novel printhead technologies through its Joint Venture company, Jetronica. Jetronica specialises in supplying solutions to selectively pattern liquids and powders capable of using a wide range of chemistries from graphene through textile pre-treatments and 3D printing of metal powders to drugs for implantable drug devices.

Alan Hudd was the Founder and Managing Director of Xennia Technology from 1996 to 2012.