US3865589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photohardenable layer with integral support of fabric or mesh
Assignee: EIDP Inc
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Filing: 1973-01-11
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Granted: 1975-02-11
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Expires: 1993-01-11
Abstract
Abstract A photopolymerizable element containing a self-supporting, reinforced floor is useful for preparing relief images such as those used, for example, in the printing industry. Selfsupporting, reinforced floor is provided by incorporating a reinforcing material (e.g., a fabric) within one stratum of the photopolymer element and subsequently flashing the side containing the reinforcing material with actinic radiation resulting in polymerization of the stratum which contains the reinforcing material.
Inventors
- 👤 John Thomas Freeman
- 👤 Robert Bernard Heiart
- 👤 Ernst Leberzammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:22
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/16; B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B41; B41C; B41C3/00; G03F7/004; G03F7/09; G03F7/11
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
47 words
IN A PHOTOSENSITIVE ELEMENT COMPRISING A SOLID LAYER OF PHOTOPOLYMERIZABLE MATERIAL COMPRISED OF (A) AN ORGANIC POLYMER BINDING AGENT, (B) AN ETHYLENICALLU UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED POLYMERIZATION, AND (C) AN ADDITION POLYMERIZATION INITIATOR ACTIVATABLE BY ACTINIC LIGHT, THE IMPROVEMENT COMPRISING A
Claim 2
Dependent Claim
47 words
IN A PHOTOSENSITIVE ELEMENT COMPRISING A SOLID LAYER OF PHOTOPOLYMERIZABLE MATERIAL COMPRISED OF (A) AN ORGANIC POLYMER BINDING AGENT, (B) AN ETHYLENICALLU UNSATURATED COMPOUND CAPABLE OF FORMING A HIGH POLYMER BY PHOTOINITIATED POLYMERIZATION, AND (C) AN ADDITION POLYMERIZATION INITIATOR ACTIVATABLE BY ACTINIC LIGHT, THE IMPROVEMENT COMPRISING A
Claim 3
Dependent Claim
35 words
A photosensitive element according to claim 1 wherein said reinforcing material is a fabric, the open space of the weave of said fabric being about 3 to 20 times the close space of the weave.
Claim 4
Dependent Claim
32 words
A photosensitive element according to claim 1 having a removable cover sheet on the side of the layer farthest from said polymerized stratum and an external support layer on the opposite side.
Claim 5
Dependent Claim
15 words
A photosensitive element according to claim 1 wherein said photopolymerizable material contains a polymerization inhibitor.
Claim 6
Dependent Claim
35 words
In a photosensitive element comprising a solid layer of photocrosslinkable polymeric material, the improvement comprising a crosslinked stratum of said layer located on one side of said layer containing a fabric or mesh reinforcing material.
Claim 7
Dependent Claim
35 words
In a photosensitive element comprising a solid layer of photocrosslinkable polymeric material, the improvement comprising a crosslinked stratum of said layer located on one side of said layer containing a fabric or mesh reinforcing material.
Claim 8
Independent Claim
68 words
A method of anchoring a fabric or mesh reinforcing material to a photosensitive element having a layer of an ethylenically unsaturated photohardenable material, comprising embedding the reinforcing material in one side of the photohardenable layer and exposing that side of the layer to actinic light sufficient to photoharden a stratum in the side of the layer containing the reinforcing material and leave the remainder of the layer unhardened.
Claim 9
Independent Claim
68 words
A method of anchoring a fabric or mesh reinforcing material to a photosensitive element having a layer of an ethylenically unsaturated photohardenable material, comprising embedding the reinforcing material in one side of the photohardenable layer and exposing that side of the layer to actinic light sufficient to photoharden a stratum in the side of the layer containing the reinforcing material and leave the remainder of the layer unhardened.
Claim 10
Dependent Claim
13 words
A method according to claim 6 wherein the embedding is performed by calendering.
Claim 11
Dependent Claim
39 words
A method of preparing a papier mache'' printing mold comprising exposing the element of claim 1 imagewise on the unpolymerized side, washing out the unexposed areas so as to form a relief and pressing papier mache'' into the relief.
Claim 12
Dependent Claim
36 words
In a photosensitive element comprising a solid layer of ethylenically unsaturated photohardenable material the improvement, comprising a photohardened stratum of said layer located on one side of said layer containing a fabric or mesh reinforcing material.
Claim 13
Dependent Claim
36 words
In a photosensitive element comprising a solid layer of ethylenically unsaturated photohardenable material the improvement, comprising a photohardened stratum of said layer located on one side of said layer containing a fabric or mesh reinforcing material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |