ZUSAMMENSETZUNG ZUR HERSTELLUNG EINES MEDIUMS FUER DIE AUFZEICHNUNG MIT HILFE VON LASERSTRAHLEN.

摘要

A composition for an imaging medium solution that is suitable for use in making ablative imaging media such as video discs, microlithographic films, and chemical etch resist-type films. The composition consists essentially of about 200 parts nitrocellulose and about 37 parts disperse red I dye dissolved in a suitable solvent, to provide a solution that is highly absorptive at a wavelength of about 480 nanometers. The solution is prepared in a special process that provides a highly-stabilized viscosity such that it can be used to form films of precise, uniform thicknesses.