Radiation imagery chemistry: process – composition – or product th – Microcapsule – process – composition – or product
Patent
1990-02-02
1992-12-01
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Microcapsule, process, composition, or product
430214, 430215, 430224, 430332, 430340, 430338, G03C 172
Patent
active
051680297
ABSTRACT:
A multicolor recording material is disclosed, which comprises a support having provided thereon at least two layers each containing a leuco dye which is capable of forming a color by oxidation and a photo-oxidizing agent, wherein the leuco dyes contained in each layer are capable of forming different color from each other and the photo-oxidizing agents contained in each layer respond to light having different wavelength from each other. Another multicolor recording material is also disclosed, which comprises a support having provided thereon a layer containing at least two kinds of heat-responsive microcapsules which have different response temperature from each other, each containing a leuco dye which is capable of forming a color by oxidation and a photo-oxidizing agent, wherein the leuco dyes contained in each kind of microcapsule are capable of forming different color from each other and the photo-oxidizing agents contained in each kind of microcapsule respond to light having different wavelength from each other.
REFERENCES:
patent: 4598036 (1986-07-01), Iwasaki et al.
patent: 4929530 (1990-05-01), Saeki et al.
patent: 4965166 (1990-10-01), Hosoi et al.
patent: 4985331 (1991-01-01), Saeki et al.
Fujita Yutaka
Igarashi Akira
Bowers Jr. Charles L.
Chen Thorl
Fuji Photo Film Co. , Ltd.
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