Woodbury and Lippmann: A new approach to continuous tone and full colour non-impact printing

Condensed Matter lunchtime seminar

Woodbury and Lippmann: A new approach to continuous tone and full colour non-impact printing

  • Event time: 1:00pm until 2:00pm
  • Event date: 30th April 2018
  • Speaker: (Centre for Fine Print Research, University of the West of England)
  • Location: Room 2511,

Event details

A historic development, the CMYK halftone process and the ruled glass screen patented by Frederick Ives, has led to the reproduction of almost all present day images as pixelated CMYK prints. Historic processes, such as those invented by Woodbury and Lippmann produce prints far superior to anything which is commercially available at the present time. Those processes have been largely forgotten as they were not commercially competitive. Woodburytype was the first, and still is the only photomechanical process that can reproduce truly continuous tone. A topographic print of pigmented gelatin layers, the image is generated by the absorption of light in those layers. Lippmann photography does not contain any dyes or pigments, but still reproduce the biggest colour gamut possible on the basis of interference colours. Light is selectively reflected by resonance cavities which makes the photograph change colour under different viewing angles. In classic Lippmann photography, the reflective layers of the cavities consist of very fine metallic silver grains separated by layers of gelatin. Woodburytype and Lippmann photography and their 21st century incarnations will be discussed.

About Condensed Matter lunchtime seminars

This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..

Find out more about Condensed Matter lunchtime seminars.