US6127084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material employing microcapsules containing a hygroscopic polymer in the internal phase
Assignee: Eastman Kodak Co
•
Filing: 1998-10-23
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Granted: 2000-10-03
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Expires: 2018-10-23
Abstract
Abstract A photosensitive material including a support having a layer of photosensitive microcapsules on the surface thereof, the photosensitive microcapsules including an internal phase containing a photosensitive composition and a color precursor wherein, upon image-wise exposing the photosensitive material and rupturing the microcapsules, the color precursor is image-wise released from the microcapsules to form a color image, the photosensitive material further including a hygroscopic polymer, is disclosed.
Inventors
- 👤 Ibrahim Katampe
- 👤 Joseph C. Camillus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
A photosensitive material including a support having a layer of photosensitive microcapsules on the surface thereof, said photosensitive microcapsules including an internal phase containing a solution comprising a photosensitive composition and a color precursor wherein, upon image-wise exposing said photosensitive material and rupturing said microcapsules, said color precursor is image-wise released from the microcapsules to form a color image, said internal phase including a hygroscopic polymer in an amount sufficient to reduce the tendency of said color image to darken, provided said hygroscopic polymer is not polyvinyl alcohol.
Claim 2
Dependent Claim
88 words
A photosensitive material including a support having a layer of photosensitive microcapsules on the surface thereof, said photosensitive microcapsules including an internal phase containing a solution comprising a photosensitive composition and a color precursor wherein, upon image-wise exposing said photosensitive material and rupturing said microcapsules, said color precursor is image-wise released from the microcapsules to form a color image, said internal phase including a hygroscopic polymer in an amount sufficient to reduce the tendency of said color image to darken, provided said hygroscopic polymer is not polyvinyl alcohol.
Claim 3
Dependent Claim
16 words
The photosensitive material of claim 1 wherein said material further includes a layer of developer material.
Claim 4
Dependent Claim
24 words
The photosensitive material of claim 1 wherein said material comprises a first transparent support and a second support which may be transparent or opaque.
Claim 5
Dependent Claim
21 words
The photosensitive material of claim 3 wherein said first transparent support and said second support are sealed along their peripheral edges.
Claim 6
Dependent Claim
26 words
The photosensitive material of claim 3 wherein said material system further includes a subbing layer between said first transparent support and said layer of photosensitive microcapsules.
Claim 7
Dependent Claim
24 words
The photosensitive material of claim 3 wherein said material system further includes an adhesive between said layer of photosensitive microcapsules and said second support.
Claim 8
Dependent Claim
59 words
The photosensitive material of claim 1 wherein said hygroscopic polymer is selected from the group consisting of partially hydrolyzed acrylates, partially hydrolyzed methacrylates, sulfonated polyesters of aromatic dicarboxylic acids and aliphatic or cycloaliphatic glycols or alkali metal salts thereof, polyvinylpyrrolidone, polyvinyl imidozol, polyacrylamides, polymethacrylamides, polystyrenesulfonic acid, corn starch, wheat starch, agar, xanthan gums, gelatin, gelatin derivatives, cellulose, and dextrin.
Claim 9
Dependent Claim
29 words
The photosensitive material of claim 7 wherein said hygroscopic polymer is a sulfonated polyester of aromatic dicarboxylic acids and aliphatic or cycloaliphatic glycols or an alkali metal salt thereof.
Claim 10
Dependent Claim
30 words
The photosensitive material of claim 1 wherein said hygroscopic polymer is present in said internal phase in an amount of about 0.05 to 2.5% by weight of the photosensitive composition.
Claim 11
Dependent Claim
31 words
The photosensitive material of claim 3 wherein said first transparent support is a clear polyethylene terephthalate film and said second support is an opaque polyethylene terephthalate film containing a white pigment.
Claim 12
Dependent Claim
120 words
A sealed, self-contained photosensitive material comprising first and second interfacing supports, said first support carrying a layer of photosensitive microcapsules, said microcapsules containing an internal phase which includes a solution comprising a photosensitive composition and a color precursor, and a developer material present on said first support carrying said layer of photosensitive microcapsules or on said second support wherein, upon image-wise exposing said layer of photosensitive microcapsules and rupturing said microcapsules, the color precursor is released from said microcapsules and reacts with said developer material to form a color image, wherein said internal phase contains a hygroscopic polymer in an amount sufficient to reduce the tendency of said color image to darken, provided said hygroscopic polymer is not polyvinyl alcohol.
Claim 13
Dependent Claim
120 words
A sealed, self-contained photosensitive material comprising first and second interfacing supports, said first support carrying a layer of photosensitive microcapsules, said microcapsules containing an internal phase which includes a solution comprising a photosensitive composition and a color precursor, and a developer material present on said first support carrying said layer of photosensitive microcapsules or on said second support wherein, upon image-wise exposing said layer of photosensitive microcapsules and rupturing said microcapsules, the color precursor is released from said microcapsules and reacts with said developer material to form a color image, wherein said internal phase contains a hygroscopic polymer in an amount sufficient to reduce the tendency of said color image to darken, provided said hygroscopic polymer is not polyvinyl alcohol.
Claim 14
Dependent Claim
31 words
The self-contained photosensitive material of claim 11 wherein said hygroscopic polymer is present in said internal phase in an amount of about 0.05 to 2.5% by weight of said photosensitive material.
Claim 15
Dependent Claim
14 words
The photosensitive material of claim 10 wherein said supports are sealed at their perimeter.
References Cited (Backward Citations)
US2800457A
Cited
US2730456A
Cited
US3672935A
Cited
US3796669A
Cited
US3732120A
Cited
US3755190A
Cited
US3920510A
Cited
US3914511A
Cited
US4025455A
Cited
US4087376A
Cited
US4089802A
Cited
US4001140A
Cited
US4501809A
Cited
US4399209A
Cited
US4440846A
Cited
US4416966A
Cited
US4912011A
Cited
US4842980A
Cited
US4772541A
Cited
US4865942A
Cited
US4772530A
Cited
US4800149A
Cited
US4766050A
Cited
JPH0296162A
Cited
US5071823A
Cited
US5230982A
Cited
US5057393A
Cited
US5091280A
Cited
US5100755A
Cited
US5112752A
Cited
US5516621A
Cited
WO1995034845A1
Cited
US5783353A
Cited
US5955237A
Cited
JPH10301269A
Cited
WO1999046642A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-03 | 2004-04-03 | 2004-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-03 | 2008-04-03 | 2008-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-03 | 2012-04-03 | 2012-10-03 | $7700.00 | Window Closed / Lapsed |