US4508807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material employing encapsulated radiation sensitive composition and a transparentizable image-receiving layer
Assignee: Mead Corp
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Filing: 1983-07-11
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Granted: 1985-04-02
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Expires: 2003-07-11
Abstract
Abstract An imaging material in which images are formed by exposing a sheet having on a surface a layer of microcapsules containing a radiation sensitive internal phase, and rupturing the microcapsules; wherein images in the form of transparent windows are formed in an opaque image-receiving layer containing a light-scattering pigment by rendering the pigment transparent with the internal phase released from the ruptured microcapsules.
Inventors
- 👤 Paul C. Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
130 words
A photosensitive material comprising a microcapsule-containing layer including a plurality of rupturable microcapsules containing an internal phase, said internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to incident actinic radiation, and an image-receiving layer including a light-scattering pigment, said image-receiving layer being opaque, but having the capacity to be rendered transparent upon being contacted with said internal phase upon its release from said microcapsule-containing layer following exposure and development, said microcapsule-containing layer and said image-receiving layer being on the same or separate supports, wherein one image-wise exposing said microcapsule-containing layer to actinic radiation and rupturing said microcapsules, said internal phase is released from said microcapsules in the image areas and transferred to said image-receiving layer where it renders said image-receiving layer image-wise transparent.
Claim 2
Dependent Claim
130 words
A photosensitive material comprising a microcapsule-containing layer including a plurality of rupturable microcapsules containing an internal phase, said internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to incident actinic radiation, and an image-receiving layer including a light-scattering pigment, said image-receiving layer being opaque, but having the capacity to be rendered transparent upon being contacted with said internal phase upon its release from said microcapsule-containing layer following exposure and development, said microcapsule-containing layer and said image-receiving layer being on the same or separate supports, wherein one image-wise exposing said microcapsule-containing layer to actinic radiation and rupturing said microcapsules, said internal phase is released from said microcapsules in the image areas and transferred to said image-receiving layer where it renders said image-receiving layer image-wise transparent.
Claim 3
Dependent Claim
15 words
The photosensitive material of claim 1 wherein said radiation sensitive composition is a photohardenable composition.
Claim 4
Dependent Claim
16 words
The photosensitive material of claim 2 wherein said microcapsules are microcapsules having a discrete microcapsule wall.
Claim 5
Dependent Claim
31 words
The photosensitive material of claim 3 wherein said pigment has an index of refraction which equals or is substantially the same as the index of refraction of said radiation curable composition.
Claim 6
Dependent Claim
29 words
The photosensitive material of claim 4 wherein said support underlying said image-receiving layer or a layer interposed between said support and said image-receiving layer is black or a color.
Claim 7
Dependent Claim
29 words
The photosensitive material of claim 1 wherein said support underlying said image-receiving layer or a layer interposed between said support and said image-receiving layer is black or a color.
Claim 8
Dependent Claim
18 words
The photosensitive material of claim 4 wherein said microcapsule-containing layer and said image-receiving layer are on separate supports.
Claim 9
Dependent Claim
19 words
The photosensitive material of claim 4 wherein said microcapsule-containing layer and said image-receiving layer are on the same support.
Claim 10
Dependent Claim
19 words
The photosensitive material of claim 4 wherein said radiation curable material includes a polyethylenically unsaturated monomer and a photoinitiator.
Claim 11
Dependent Claim
130 words
A process for forming images which comprises image-wise exposing to actinic radiation at least the microcapsule-containing layer of photosensitive material including: a microcapsule-containing layer including a plurality of rupturable microcapsules containing an internal phase, said internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to incident actinic radiation, and an image-receiving layer including a light-scattering pigment, said image-receiving layer being opaque but having the capacity to be rendered transparent upon being contacted with said internal phase released from said microcapsule-containing layer, said microcapsule-containing layer and said image-receiving layer being on the same or separate supports, and rupturing said microcapsules such that said internal phase is released from said microcapsule-containing layer in the image areas and contacts said image-receiving layer thereby rendering it image-wide transparent.
Claim 12
Dependent Claim
130 words
A process for forming images which comprises image-wise exposing to actinic radiation at least the microcapsule-containing layer of photosensitive material including: a microcapsule-containing layer including a plurality of rupturable microcapsules containing an internal phase, said internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to incident actinic radiation, and an image-receiving layer including a light-scattering pigment, said image-receiving layer being opaque but having the capacity to be rendered transparent upon being contacted with said internal phase released from said microcapsule-containing layer, said microcapsule-containing layer and said image-receiving layer being on the same or separate supports, and rupturing said microcapsules such that said internal phase is released from said microcapsule-containing layer in the image areas and contacts said image-receiving layer thereby rendering it image-wide transparent.
Claim 13
Dependent Claim
64 words
The process of claim 18 wherein said microcapsule-containing layer and said image-receiving layer are on separate supports and said exposure step comprises exposing said microcapsule-containing layer to actinic radiation, and, following said exposure, said microcapsule-containing layer is assembled with said image-receiving layer and said internal phase is transferred to said image-receiving layer in the image areas whereupon said image-receiving layer is rendered image-wise transparent.
Claim 14
Dependent Claim
18 words
The process of claim 18 wherein said microcapsule-containing layer and said image-receiving layer are on the same support.
Claim 15
Dependent Claim
28 words
The process of claim 18 wherein the support for said image-receiving layer or a layer interposed between said image-receiving layer and said support is black or a color.
Claim 16
Dependent Claim
40 words
The process of claim 18 which additionally comprises uniformly exposing at least said microcapsule-containing layer to a radiation of an intensity insufficient to alter the viscosity of said radiation sensitive material but sufficient to sequester oxygen present in said microcapsules.
Claim 17
Dependent Claim
15 words
The process of claim 10 wherein said radiation sensitive material is a radiation curable material.
Claim 18
Dependent Claim
15 words
The process of claim 15 wherein said microcapsules are microcapsules having a discrete microcapsule wall.
Claim 19
Dependent Claim
29 words
The process of claim 16 wherein said pigment has an index of refraction which matches or is substantially the same as the index of refraction of said internal phase.
Claim 20
Dependent Claim
15 words
The process of claim 17 wherein said radiation curable material is a polyethylenically unsaturated compound.
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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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |