Inventors:
Robert V. Pole - Los Gatos CA
Meredith D. Shattuck - San Jose CA
Glenn T. Sincerbox - San Jose CA
Harald W. Werlich - Los Gatos CA
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G03G 502
Abstract:
A direct view display device comprises a pair of conductive electrodes in spaced relationship and a recording medium having the properties of being both photo-ionizable and capable of electro-chemically producing colored species occupies the space between the electrodes. The display device is exposed to an optical pattern of radiation to which the recording material is sensitive to produce a latent image, and a potential is applied between the electrodes to produce a very dense image corresponding to the optical pattern. The image can be erased by reversing the potential between the electrodes so that the expose and enhance process can be repeated.