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Proceedings Paper

Laser Marking of Ablative Organic Dye-in-Polymer Films
Author(s): G. E. Johnson; K. Y. Law
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Paper Abstract

Thin films consisting of an organic dye dissolved in a polymer binder have been shown to constitute a viable medium for high density optical recording and storage of information. An investigation has been made which addresses the influence of the polymer binder on the marking process in this type of medium. Time resolved measurements on a series of films, in which the molecular weight of the polystyrene binder is systematically varied between 2.1 K and 2000 K, have revealed a molecular weight dependent relaxation phenomenon which occurs subsequent to the initial hole opening. The relaxation phenomenon appears to be a flow of displaced molten polymeric material back into the initially created hole. This relaxation process becomes important at a molecular weight of 37 K a value close to the critical molecular weight where chain entanglements occur and where the melt viscosity becomes strongly molecular weight dependent.

Paper Details

Date Published: 10 November 1983
PDF: 8 pages
Proc. SPIE 0420, Optical Storage Media, (10 November 1983); doi: 10.1117/12.936089
Show Author Affiliations
G. E. Johnson, Xerox Corporation (United States)
K. Y. Law, Xerox Corporation (United States)


Published in SPIE Proceedings Vol. 0420:
Optical Storage Media

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