Radiation imagery chemistry: process – composition – or product th – Luminescent imaging
Patent
1994-11-14
1997-04-22
Wright, Lee C.
Radiation imagery chemistry: process, composition, or product th
Luminescent imaging
430496, 430944, 428690, 250330, 2504752, 2504842, 2504861, 2504844, G03C 1725
Patent
active
056228074
ABSTRACT:
The present invention is a composition for use in constructing a photosensitive film for recording color images. The preferred composition includes first, second, and third particle types. Each particle type comprises a crystalline base material having a trap dopant and a color dopant deposited therein. Each of the color dopants has a different activation energy for releasing electrons into the conduction/communication band of the crystalline base material. This results in a different spectral sensitivity for each dopant, and, hence for each particle type. In addition, each of the trap dopants has a different activation energy for releasing trapped electrons into the conduction/communication band of the crystalline base material. This enables the recorded color image to be read out one color at a time, which avoids color distortion.
The invention also provides a photosensitive film for recording a color image. The film comprises a backing material having a plurality of depressions therein. The depressions are filled with a photosensitive material that includes first, second, and third particle types. Each particle type comprises a crystalline base material doped with atoms of a trap dopant and a color dopant. Each color dopant has a different spectral sensitivity, and each trap dopant has a different activation energy for releasing trapped electrons into the conduction/communication band of the crystalline base material.
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"Preparation and Characteristics of Solid Luminescent Materials", The Division of Electron Optics of the American Physical Society, Oct. 24-16, 1946, Chapters 6, 16, 19 and 20.
Cutler Gregory M.
Weber Andreas
Hewlett--Packard Company
Wright Lee C.
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