Pagora rubrique Formation 2022

Materials & Colour - 4FMT1083

  • Number of hours

    • Lectures 46.5
    • Projects -
    • Tutorials -
    • Internship -
    • Laboratory works 12.0

    ECTS

    ECTS 65.0

Goal(s)

Learning outcomes :

  • To know the notion of metamerism
  • To know the principles and methods of reproducing a colour
  • To know the formulas for colour differences.
  • To characterize color: describe the color of an object from its diffuse reflection spectrum and the illuminant
  • To measure a color in different colorimetric systems
  • To calculate a color difference between a control and its reproduction
  • To reproduce an ink to the model using formulation software
  • To know the main characteristics of printing inks and varnishes, according to the different printing processes: typical compositions, drying processes
  • To identify the causes of some printing problems related to inks
  • To use special inks, such as applications to new technologies (e. g. microelectronics).
  • To know the general principles of photophysics and photochemistry
  • To provide examples of applications of photophysics and photochemistry in the graphic and processing industries.
  • To describe some classic applications of photochemistry (example: photopolymerization) and photophysics (example: photoluminescence)

Responsible(s)

Anne BLAYO

Content(s)

Colour physics part

Introduction
1. Eye and colour vision
2. Light and its interactions with materials
3. Fundamentals of visual colorimetry : CIE 1931, XYZ, definition of metamerism
4. Colorimetry of differences : CIE 1976, L*a*b* system, definition and formulae of color differences
5. Colour matching : models of color matching (Kubelka-Munk, Neugebauer, etc.)
6. Evaluation of the quality of color matching, conditions of spectrophotometry measurements
7. Introduction to colour appearance models (CIECAM)

Ink part

1.Introduction : general characteristics of printing inks
2.Pigments soluble dyes
3.Offset inks
4.Flexo and gravure inks
5.Ink jet inks and Toners
6.Screen-printing inks
7.UV-curable inks
8.Rheological and physico-chemical properties of printing inks
9. Introduction to functional inks

Photochemistry and physics part

1- Introduction

  • Definitions : photo physics vs. photochemistry; units and magnitudes
  • Interactions between light and molecules
    2- Laws of photochemistry
    -1st and 2nd laws of photochemistry
    -Excitation of an organic molecule
    3- Chromophores
    4- Fluorescence / Phosphorescence
    5- Study of primary photochemical processes
    -General presentation
    -Case study - Applications.

Prerequisites

Optical properties of papers, basics in geometry
Rheology, Physico-chemistry, Printing processes, Polymer chemistry
Basics in organic chemistry

Accessibility for people with disabilities : please contact us for further information

Test

  • Specific credits: this course brings 5.0 ECTS to students in ICI - Exchange Semester - AUTUMN

Evaluation : Description of evaluation conditions in the ‘Evaluation’ field (3h)

Resit : Written exam (3h)

Course language and exams adapted to the student audience.

  • Only 1 written exam for the 3 courses: colorimetry, inks and photophysics, photochemistry
    can be retaken in the 2nd session.
    One part without documents, one part with all documents and calculator.
    DS Course: 55% of the weight of the UE,
  • TP CR, not to be made up in the 2nd session + oral assessment
    TP mark: 10% of the weighting of the UE

For practical work
To be handed in no later than 15 days after session 2.
Plan: 1) Introduction - 2) Materials and experimental techniques - 3) Results and discussion - 4) Conclusions.
Attach your measurement tables to the report (in appendix for example).
The idea is to be able to repeat the test without the instructions!

downgraded mode arrangements :

  • written exam for the 3 courses in limited time and remotely, with submission of the copy (pdf) according to a timetable defined by the teacher.
  • if the practical sessions cannot take place, alternative work will be required.

The exam may be taken in french or in english

Calendar

The course exists in the following branches:

Additional Information

Course ID : 4FMT1083
Course language(s): FR FR

You can find this course among all other courses.

Environmental security

La sécurité est prise en compte dans cet enseignement surtout pendant les TP : utilisation d'encres et de solvants de nettoyage. Une sensibilisation est faite sur les bonnes pratiques en laboratoire encres.

Bibliography

  • Billmeyer F.W. and Saltzman M., « Principles of color technology », 3rd ed., John Wiley, 2000.
  • Elias M. et Lafait J., « La couleur – Lumière, vision et matériaux», ed. Belin, 2006.
  • Fairchild M.D., « Color Appearance Models », ed.Addison-Wesley, 1998.
  • Kowaliski P., Viénot F. et Sève R., « Vision et mesure de la couleur », ed. Masson, 1990.
  • McDonald R., « Color physics for industry », ed. by Society of Dyers and Colourists, 1987.
  • Nassau K., « The Physics and Chemistry of color : the fifteen causes of color », 2nd ed., John Wiley, 2001.
  • Sève R., « Physique de la Couleur : de l’apparence colorée à la technique colorimétrique », ed. Masson, 1996.
  • Sharma G. et al., « Digital Color Imaging Handbook », ed. by G. Sharma, CRC Press, 2003.