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Colour measurement for the graphic arts
Colour measurement is increasingly important in the graphic arts industry. Where previously densitometry provided an adequate means of process control, users are now finding colorimetry an essential tool for device calibration and profile creation. The adoption of international process control standards based on colorimetric references, together with the increasing demands for high quality colour reproduction of both images and spot colours, makes a knowledge of colorimetry a vital skill in today's market.
The course is intended to provide in-depth training for users of colour measuring equipment. It covers both the theory of colorimetry and the CIE system, and the practical use of the equipment. Based in the Colour Laboratories in the School of Printing and Publishing, the course is led by members of the Colour Imaging Group.
The instruments that will be used include a range of hand-held and bench spectrophotometers with the two widely used measuring geometries, 0/45 and 0/diffuse. We will also demonstrate the use of a telespectroradiometer for making precise measurements of emissive surfaces such as colour monitors and for measurements that include ambient illumination of the viewing environment.
The course is structured so that Day 1 provides a grounding in the basic practical techniques and underlying theory, while Day 2 addresses more advanced topics. Participants may register for one or both days.
What you will learn
Participants will learn how spectral radiation is detected and the resulting signals transformed into quantities that consistently model the human visual response using the internationally-established CIE system. They will learn how the difference between two colours (such as a proof and a print) can be quantified and how production aim values and tolerances are established. The limitations of colorimetry will be discussed, and participants will be shown how to determine the accuracy and repeatability of the instruments used.
The practical sessions will cover a range of activities that are of importance in the graphic arts industry today. These will include the measuring of samples for the purpose of process control, and the measurement of colour targets on different media for the creation of ICC device profiles.
Who should attend
The course is aimed at all those who need to make accurate colour measurements of graphic arts media, (including prints, transparencies and monitors) and interpret the results.
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| Short courses programme | Colour measurement | Colour management | Process control | Fees and registration |