Radiation imagery chemistry: process – composition – or product th – Microcapsule – process – composition – or product
Patent
1987-04-06
1989-02-21
Shah, Mukund J.
Radiation imagery chemistry: process, composition, or product th
Microcapsule, process, composition, or product
252600, 42721331, 4284022, 42840221, 42840224, 430211, 430512, 430926, G03C 140, G03C 100, G03C 146, G03C 172
Patent
active
048064467
ABSTRACT:
A photosensitive recording medium having a multiplicity of microcapsules formed on a substrate, and a developer material, each microcapsule having a photosensitive resin and a chromogenic material which reacts with the developer layer to form a colored image spot. The microcapsules comprise a plurality of microcapsule groups which are sensitive to radiations having different wavelength bands, or which are sensitive to different intensities of the radiation. An image recording system is provided with an illuminating device for generating radiations of different wavelengths falling within the wavelength bands of the microcapsule groups, or a radiation of variable intensity. The recording system has a selector for selecting at least one of the radiations of the different wavelengths, or one of the intensity levels of the radiation, in order to adjust the contrast of the images formed on the medium, with respect to non-image areas on the medium.
REFERENCES:
patent: 4399209 (1983-08-01), Sanders et al.
patent: 4440846 (1984-04-01), Sanders et al.
patent: 4576891 (1986-03-01), Adair et al.
patent: 4587194 (1986-05-01), Adair et al.
Furukawa Satoshi
Hatta Naoyuki
Brother Kogyo Kabushiki Kaisha
Shah Mukund J.
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