US4416966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capsular imaging system comprising decolorizing agent
Assignee: Eastman Kodak Co
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Filing: 1982-08-25
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Granted: 1983-11-22
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Expires: 2002-08-25
Abstract
Abstract A capsular imaging system wherein the imaging material comprises a support coated on one surface with a layer of capsules containing, as an internal phase, a radiation sensitive composition and a decolorizing agent; images are formed by a dry process wherein the aforesaid sheet is image-wise exposed; exposure of the sheet controls release of the decolorizing agent from the capsules which image-wise reacts with a dye layer and causes a color change. Embodiments are also disclosed in which the decolorizing agent inhibits or reverses the color forming reaction between a dye precursor and a dye developer.
Inventors
- 👤 Frederick W. Sanders
- 👤 Richard F. Wright
- 👤 Paul C. Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
133 words
An imaging system comprising: an imaging sheet and a background dye or a combination of a dye precursor and a dye developer which react to form a background dye, said imaging sheet including: a support, a plurality of capsules in a layer on one surface of said support, and an internal phase contained within said capsules comprising a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition, wherein images can be formed by image-wise exposing said sheet to actinic radiation and rupturing said capsules such that said decolorizing agent is image-wise released from said capsules and reacts with said associated background dye to decolorize it or inhibits, prevents or reverses the color forming reaction of said dye precursor and dye developer to produce a color difference in the form of an image.
Claim 2
Dependent Claim
133 words
An imaging system comprising: an imaging sheet and a background dye or a combination of a dye precursor and a dye developer which react to form a background dye, said imaging sheet including: a support, a plurality of capsules in a layer on one surface of said support, and an internal phase contained within said capsules comprising a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition, wherein images can be formed by image-wise exposing said sheet to actinic radiation and rupturing said capsules such that said decolorizing agent is image-wise released from said capsules and reacts with said associated background dye to decolorize it or inhibits, prevents or reverses the color forming reaction of said dye precursor and dye developer to produce a color difference in the form of an image.
Claim 3
Dependent Claim
15 words
The image system of claim 1 wherein said radiation sensitive composition is a photohardenable composition.
Claim 4
Dependent Claim
15 words
The imaging system of claim 2 wherein said photohardenable composition contains a radiation curable monomer.
Claim 5
Dependent Claim
51 words
The imaging system of claim 1 wherein said system comprises said background dye and said dye is carried on said imaging sheet in a layer contiguous with said layer of capsules, and said decolorizing agent released from said capsules reacts with said dye to decolorize it and thereby form an image.
Claim 6
Dependent Claim
62 words
The imaging system of claim 1 wherein said system comprises said background dye and additionally comprises a transfer sheet and said dye is carried in a layer on the surface of said transfer sheet, and said decolorizing agent released from said capsules is transferred to said transfer sheet where it reacts with said dye to decolorize it and thereby form an image.
Claim 7
Dependent Claim
58 words
The imaging system of claim 1 wherein said system comprises said combination of said dye precursor and said dye developer and said dye precursor is contained in a plurality of capsules which are codeposited on said surface of said support in the same layer or in a separate layer from said layer of capsules containing said internal phase.
Claim 8
Dependent Claim
34 words
The imaging system of claim 6 wherein said system further comprises in combination therewith a transfer sheet and said associated dye developer is present in a layer on the surface of said transfer sheet.
Claim 9
Dependent Claim
39 words
The imaging system of claim 6 wherein said dye developer is codeposited on said support with said capsules containing said dye precursor and said capsules containing said internal phase in the same layer or in a separate underlying layer.
Claim 10
Dependent Claim
18 words
The imaging system of claim 1 wherein said capsules containing said internal phase have a discrete capsule wall.
Claim 11
Dependent Claim
25 words
The imaging system of claim 8 wherein said capsules containing said dye precursor and said capsules containing said internal phase have a discrete capsule wall.
Claim 12
Dependent Claim
86 words
An imaging process which comprises: image-wise exposing to actinic radiation an imaging sheet having associated therewith a dye, said imaging sheet including a support having on the surface thereof a layer of capsules, said capsules containing a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition as an internal phase; and rupturing said capsules in the presence of said dye such that said capsules image-wise release said decolorizing agent and said decolorizing agent reacts with said dye to decolorize it and thereby form an image.
Claim 13
Dependent Claim
86 words
An imaging process which comprises: image-wise exposing to actinic radiation an imaging sheet having associated therewith a dye, said imaging sheet including a support having on the surface thereof a layer of capsules, said capsules containing a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition as an internal phase; and rupturing said capsules in the presence of said dye such that said capsules image-wise release said decolorizing agent and said decolorizing agent reacts with said dye to decolorize it and thereby form an image.
Claim 14
Dependent Claim
30 words
The imaging process of claim 11 wherein said dye is carried on said imaging sheet either in said layer of capsules containing said decolorizing agent or in a separate layer.
Claim 15
Dependent Claim
44 words
The imaging process of claim 11 wherein said dye is carried on a transfer sheet and said process further comprises, following rupturing of said capsules, image-wise transferring said decolorizing agent to said transfer sheet for said reaction with said dye which produces said image.
Claim 16
Dependent Claim
135 words
An imaging process which comprises: image-wise exposing an imaging sheet to actinic radiation; said imaging sheet including: a support, a plurality of first capsules in a layer on one surface of said support, and an internal phase contained in said first capsules comprising a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition, said imaging sheet having associated therewith a combination of a dye developer and a dye precursor which is capable of reacting to form a dye, rupturing said capsules on said imaging sheet in the presence of said dye developer such that said decolorizing agent is image-wise released from said capsules and imge-wise reacts with said dye developer, and reacting said dye precursor with said dye developer where said dye developer has not reacted with said decolorizing agent to form an image.
Claim 17
Dependent Claim
135 words
An imaging process which comprises: image-wise exposing an imaging sheet to actinic radiation; said imaging sheet including: a support, a plurality of first capsules in a layer on one surface of said support, and an internal phase contained in said first capsules comprising a decolorizing agent and a photohardenable or photosoftenable radiation sensitive composition, said imaging sheet having associated therewith a combination of a dye developer and a dye precursor which is capable of reacting to form a dye, rupturing said capsules on said imaging sheet in the presence of said dye developer such that said decolorizing agent is image-wise released from said capsules and imge-wise reacts with said dye developer, and reacting said dye precursor with said dye developer where said dye developer has not reacted with said decolorizing agent to form an image.
Claim 18
Dependent Claim
24 words
The process of claim 14 wherein said dye developer is present on the same surface of said imaging sheet as said plurality of capsules.
Claim 19
Dependent Claim
41 words
The process of claim 15 wherein said dye precursor is present on a transfer sheet and said process further comprises, after rupturing said capsules and reacting said decolorizing agent with said dye developer, transferring said dye precursor to said imaging sheet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |