WERKWIJZE VOOR HET REGISTREREN VAN GEGEVENS IN ZICHTBARE VORM.

摘要

A recording technique using a laser beam for image recording on a film. In the preferred embodiment, the film comprises a transparent substrate coated with heat absorbing particles, dispersed in a self-oxidizing binder. Contrary to the present practice of directing the laser beam on the coating itself, the laser beam is directed through the substrate with its energy focused on the boundary interface between the substrate and coating. This causes the coating to be removed, as by blow-off or explosion, leaving a clear area on the substrate forming a positive image of the recorded material.