Focal length
Focal length
Glossary of flexographic printing terms
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Printing and graphics
Definition of focal length
Focal length: In photography, the distance from the center of the lens to the image of an object at infinity. At same size, the distance from copy to image is four times the focal length of the lens.
Source : http://www.glrppr.org/hubs/hub503/Flexogloss.doc
link: http://www.glrppr.org/
Author : not indicated on the source document of the above text
References:
Pocket Pal, A Graphic Arts Production Handbook, International Paper Company, July 1995.
Gravure Process and Technology, Gravure Association of America, 1991
Glossary of Printing Terms, Print USA, October 27, 1995
Index of (Printing) Terms, Johnathan Lee Lyons, Lyons Digital Media, 1995
Screen Printing: Design & Technique, Nicholas Bristow, 1990
Flexography Principles and Practices, Flexographic Technical Association, 1980
Glossary of flexographic printing terms
Glossary of flexographic printing terms index
Definition and meaning of focal length
Meaning of focal length
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