Patent US4971941A successfully refreshed from Google Patents.
US4971941A
Expired / Lapsed
US
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Imaging sheet for achieving color balance
Assignee: Mead Corp
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Filing: 1988-05-26
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Granted: 1990-11-20
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Expires: 2008-05-26
Abstract
Abstract An imaging sheet used for achieving color balance in a full-color imaging system is disclosed. The sheet is characterized by utilizing three sets of microcapsules, each containing a different colorless image-agent and a photohardenable or photosoftenable composition, and a corrective dye associated with the substrate. Association of the corrective dye with the substrate achieves color balance by equalizing the speed of the different colorless color-forming microcapsules.
Inventors
- 👤 James A. Dowler
- 👤 Peter G. Engeldrum
- 👤 Roger Jerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:55
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/24901; Y10T428/24917
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
85 words
An imaging sheet used for achieving color balance in a full color imaging system, said sheet comprising: a substrate having front and back surfaces; a layer of photosensitive microcapsules on the front or back surface of said substrate, said microcapsules including a first, a second and a third set of microcapsules, each set of microcapsules containing a different image-forming agent and a photohardenable or photosoftenable composition; and one or more color corrective dyes having a maximum absorptivity in the visible spectrum to provide color balance.
Claim 2
Dependent Claim
85 words
An imaging sheet used for achieving color balance in a full color imaging system, said sheet comprising: a substrate having front and back surfaces; a layer of photosensitive microcapsules on the front or back surface of said substrate, said microcapsules including a first, a second and a third set of microcapsules, each set of microcapsules containing a different image-forming agent and a photohardenable or photosoftenable composition; and one or more color corrective dyes having a maximum absorptivity in the visible spectrum to provide color balance.
Claim 3
Dependent Claim
14 words
The imaging sheet according to claim 1 wherein said microcapsules contain a photohardenable composition.
Claim 4
Dependent Claim
23 words
The imaging according to claim 2 wherein said first, second and third sets of microcapsules respectively contain cyan, magenta and yellow color-forming agents.
Claim 5
Dependent Claim
12 words
The imaging sheet according to claim 3 wherein said substrate is transparent.
Claim 6
Dependent Claim
38 words
The imaging sheet according to claim 4 wherein said one or more corrective dyes is coated onto said front surface of said substrate and wherein said layer of microcapsules is coated onto said one or more corrective dyes.
Claim 7
Dependent Claim
38 words
The imaging sheet according to claim 4 wherein said layer of microcapsules is coated onto the front surface of said substrate and wherein said one or more corrective dyes is coated onto the back surface of said substrate.
Claim 8
Dependent Claim
19 words
The imaging sheet according to claim 4 wherein said one or more corrective dyes is incorporated with said substrate.
Claim 9
Dependent Claim
30 words
The imaging sheet according to claim 4 wherein said substrate is a substrate having a metallized layer located on either the front surface or the back surface of the substrate.
Claim 10
Dependent Claim
45 words
The imaging sheet according to claim 8 wherein said metallized layer is located on the front surface of said substrate, said one or more corrective dyes is located on said metallized layer and said layer of microcapsules is located on said one more corrective dyes.
Claim 11
Dependent Claim
44 words
The imaging sheet according to claim 8 wherein said metallized layer is located on the front surface of said substrate, said layer of microcapsules is located on said metallized layer and said one or more corrective dyes is located on said layer of microcapsules.
Claim 12
Dependent Claim
46 words
The imaging sheet according to claim 8 wherein said metallized layer is located on the back surface of said substrate, said one or more corrective dyes is located on said metallized layer and said layer of microcapsules is located on said front surface of said substrate.
Claim 13
Dependent Claim
49 words
The imaging sheet according to claim 8 wherein said metallized layer is located on the back surface of said substrate, said one or more corrective dyes is located on the front surface of said substrate and said layer of microcapsules is located on said one or more corrective dyes.
Claim 14
Dependent Claim
44 words
The imaging sheet according to claim 8 wherein said metallized layer and said one or more corrective dyes are co-evaporated on the front or back surface of said substrate and wherein said layer of microcapsules is coated onto said front surface of said substrate.
Claim 15
Dependent Claim
19 words
The imaging sheet according to claim 13 wherein said metallized layer comprises a layer containing aluminum or nickel particles.
Claim 16
Dependent Claim
21 words
The imaging sheet according to claim 14 wherein metallized layer further comprises cobalt particles, copper particles, gold particles and mixtures thereof.
Claim 17
Dependent Claim
54 words
The imaging sheet according to claim 8 wherein said metallic layer comprises a transparent binder containing particles of fine metal and said one or more corrective dye is located on either the front or back surface of said substrate and wherein said layer of microcapsules is coated onto the front surface of said substrate.
Claim 18
Dependent Claim
13 words
The imaging sheet according to claim 16 wherein said binder comprises polyvinyl alcohol.
Claim 19
Dependent Claim
39 words
The imaging sheet according to claim 3 wherein said layer of microcapsules is coated onto said front surface of said substrate and wherein said one or more corrective dyes is coated as a layer onto said layer of microcapsules.
Claim 20
Dependent Claim
38 words
The imaging sheet according to claim 3 wherein said one or more corrective dyes is admixed with said layer of microcapsules to form an admixture and wherein said admixture is coated onto the front surface of said substrate.
Claim 21
Dependent Claim
27 words
The imaging sheet according to claim 1 wherein said image-forming agents are colorless color-forming agents capable of forming an image when in contact with a developer material.
Claim 22
Dependent Claim
25 words
The imaging sheet according to claim 20 wherein said developer material is associated with said image-forming agents on a sheet separate from said imaging sheet.
Claim 23
Dependent Claim
48 words
The imaging sheet according to claim 1 wherein said one or more corrective dyes are selected from the group consisting of: anhydro-3,3-dicarboxyethyl-5,5,9-trimethyl-2,2-thiacarbocyanine betaine, anhydro-3,3-dicarboxymethyl-2,2-thiacarbocyanine betaine, 3,3-diallyl-2,2-thiacarbocyanine bromide, 3,3-diallyl-2,2-thiacarbocyanine iodide, 6,7,6,7-dibenzo-3,3-diethyl-9-methyl-2,2-thiacarbocyanine iodide, 3,3-di-n-butyl-9-methyl-2,2-thiacarbocyanine iodide, 2-(p-diethylaminostyryl)-1-ethylpyridine iodide, 3,3-diethyl-9-methyl-2,2-selenacarbocyanine iodide, 3,3-diethyl-9,11-neopentylene-2,2-thiadicarbocyanine iodide, 1,1-diethyl-2,4-quinocarbocyanine iodide, 3,3-diethyl-2,2-thiazolinocarbocyanine iodide, 2-(p-dimethylaminostyryl)-1-methylpyridine iodide, 3,3,9-triethyl-2,2-thiacarbocyanine, 2-[3-ethyl-4-oxo-5-(1-ethyl-4-quinolinylidene)-ethylide-2-thiazolinylidene]-methyl-3-ethylbenzoxasodium bromide.
References Cited (Backward Citations)
US4576891A
Cited
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