Patent US4511641A successfully refreshed from Google Patents.
US4511641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal film imaging structure
Assignee: 3M Co
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Filing: 1983-02-02
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Granted: 1985-04-16
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Expires: 2003-02-02
Abstract
Abstract An image-forming laminate is formed by the combination of a thin, frangible light opaque material on top of a photosensitive layer which changes its surfactant properties when irradiated. The photosensitive layer according to the present invention comprises a film-forming polymeric binder, a photosensitive acid generator, and a surfactant selected from nonionic surfactants, the neutral form of cationic surfactants, amphoteric surfactants, and surfactant acid salts. Preferably the frangible light opaque material is a thin metal layer. There can also be present a support layer on the other surface of the photosensitive layer, as well as there can be an adhesive layer secured to the upper surface of the frangible light opaque material. The strength of adherence of the adhesive layer to the metal should be intermediate the strength of the adherence of the light opaque material prior to and after photoactivation.
Inventors
- 👤 Stanley C. Busman
- 👤 John C. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:22
CPC Classifications
G; G03; G03F; G03F1/00; G03F1/54; G03F7/00; G03F7/26; G03F7/34; G03F7/346
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
154 words
A photosensitive, imageable article comprising: (a) a substrate, (b) a frangible, thin, light-opaque layer strippably adhered to said substrate, and (c) a photosensitive layer comprising in admixture a film forming polymeric binder, between 0.2 and 10% by weight of the dry photosensitive layer of at least one acid-sensitive surfactant, and between 0.5 and 10% by weight of the dry photosensitive layer of at least one photochemical acid generator which alters the surface activity of the acid-sensitive surfactant when the photochemical acid generator is photoactivated, and said photosensitive layer is strippably adhered to said light-opaque layer wherein the peel strength of the unexposed photosensitive layer to said light-opaque layer is less than or greater than the peel strength of said light-opaque layer to said substrate, and the peel strength of the photoactivated photosensitive layer to said light-opaque layer respectively becomes greater than or less than the peel strength of said light-opaque layer to said substrate.
Claim 2
Dependent Claim
154 words
A photosensitive, imageable article comprising: (a) a substrate, (b) a frangible, thin, light-opaque layer strippably adhered to said substrate, and (c) a photosensitive layer comprising in admixture a film forming polymeric binder, between 0.2 and 10% by weight of the dry photosensitive layer of at least one acid-sensitive surfactant, and between 0.5 and 10% by weight of the dry photosensitive layer of at least one photochemical acid generator which alters the surface activity of the acid-sensitive surfactant when the photochemical acid generator is photoactivated, and said photosensitive layer is strippably adhered to said light-opaque layer wherein the peel strength of the unexposed photosensitive layer to said light-opaque layer is less than or greater than the peel strength of said light-opaque layer to said substrate, and the peel strength of the photoactivated photosensitive layer to said light-opaque layer respectively becomes greater than or less than the peel strength of said light-opaque layer to said substrate.
Claim 3
Dependent Claim
44 words
The article of claim 1 wherein the degree of difference in peel strengths between (A) the light-opaque layer and the photosensitive layer and (B) the light-opaque layer and the substrate is at least 10 percent both in the unexposed article and the photoactivated article.
Claim 4
Dependent Claim
27 words
The article of claim 1 wherein said light-opaque layer comprises a metal, metal oxide, metal salts, or mixtures of metal and either metal oxide or metal salt.
Claim 5
Dependent Claim
27 words
The article of claim 2 wherein said light-opaque layer comprises a metal, metal oxide, metal salts, or mixtures of metal and either metal oxide or metal salt.
Claim 6
Dependent Claim
29 words
The article of claim 3 wherein said light-opaque layer has a thickness of 5 to 500 nm and a peel strength from said substrate of 0.8 to 40 g/cm.
Claim 7
Dependent Claim
29 words
The article of claim 4 wherein said light-opaque layer has a thickness of 5 to 500 nm and a peel strength from said substrate of 0.8 to 40 g/cm.
Claim 8
Dependent Claim
32 words
The article of claim 1 wherein said light-opaque layer comprises a metal having a thickness of 5 to 500 nm and a peel strength from said substrate of 0.8 to 40 g/cm.
Claim 9
Dependent Claim
32 words
The article of claim 2 wherein said light-opaque layer comprises a metal having a thickness of 5 to 500 nm and a peel strength from said substrate of 0.8 to 40 g/cm.
Claim 10
Dependent Claim
37 words
The article of claim 1 wherein said acid-sensitive surfactant comprises at least one surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 11
Dependent Claim
35 words
The article of claim 2 wherein said acid-sensitive surfactant comprises a surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 12
Dependent Claim
35 words
The article of claim 4 wherein said acid-sensitive surfactant comprises a surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 13
Dependent Claim
35 words
The article of claim 5 wherein said acid-sensitive surfactant comprises a surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 14
Dependent Claim
35 words
The article of claim 6 wherein said acid-sensitive surfactant comprises a surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 15
Dependent Claim
35 words
The article of claim 7 wherein said acid-sensitive surfactant comprises a surfactant selected from the class consisting of: (a) non-ionic surfactants, (b) surfactant acid salts, (c) neutral forms of cationic surfactants, and (d) amphoteric surfactants.
Claim 16
Dependent Claim
40 words
The article of claim 1 wherein said photochemical acid generator comprises a photochemical acid generator selected from the group consisting of diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, diazo oxides, organic compounds with photolabile halogen and polynuclear chromophore-substituted halomethyl-s-triazines.
Claim 17
Dependent Claim
40 words
The article of claim 4 wherein said photochemical acid generator comprises a photochemical acid generator selected from the group consisting of diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, diazo oxides, organic compounds with photolabile halogen and polynuclear chromophore-substituted halomethyl-s-triazines.
Claim 18
Dependent Claim
40 words
The article of claim 5 wherein said photochemical acid generator comprises a photochemical acid generator selected from the group consisting of diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, diazo oxides, organic compounds with photolabile halogen and polynuclear chromophore-substituted halomethyl-s-triazines.
Claim 19
Dependent Claim
40 words
The article of claim 8 wherein said photochemical acid generator comprises a photochemical acid generator selected from the group consisting of diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, diazo oxides, organic compounds with photolabile halogen and polynuclear chromophore-substituted halomethyl-s-triazines.
Claim 20
Dependent Claim
40 words
The article of claim 11 wherein said photochemical acid generator comprises a photochemical acid generator selected from the group consisting of diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, diazo oxides, organic compounds with photolabile halogen and polynuclear chromophore-substituted halomethyl-s-triazines.
Claim 21
Dependent Claim
209 words
A photosensitive, imageable article comprising: (a) a substrate, (b) a frangible, thin, light-opaque layer comprising a metal, metal oxide, metal salt or mixture of metal and other metal oxide or metal salt strippably adhered to said substrate, and (c) a photosensitive layer comprising in admixture a film forming polymeric binder, between 0.1 and 5% by weight of said binder of at least one acid-sensitive surfactant, and between 0.5 and 10% by weight of dry photosensitive layer of at least one photochemical acid generator which alters the surface activity of the acid-sensitive surfactant when the photochemical acid generator is photoactivated, and said photosensitive layer is strippably adhered to said light-opaque layer, wherein the peel strength of the unexposed photosensitive layer to said light-opaque layer is less than or greater than the peel strength of said light-opaque layer to said substrate, and the peel strength of the photoactivated photosensitive layer to said light-opaque layer respectively becomes greater than or less than the peel strength of said light-opaque layer to said substrate, and wherein the degree of difference in peel strengths between (a) the light-opaque layer and the photosensitive layer and (b) the light-opaque layer and the substrate is at least 10 percent both in the unexposed article and the photoactivated article.
Claim 22
Dependent Claim
209 words
A photosensitive, imageable article comprising: (a) a substrate, (b) a frangible, thin, light-opaque layer comprising a metal, metal oxide, metal salt or mixture of metal and other metal oxide or metal salt strippably adhered to said substrate, and (c) a photosensitive layer comprising in admixture a film forming polymeric binder, between 0.1 and 5% by weight of said binder of at least one acid-sensitive surfactant, and between 0.5 and 10% by weight of dry photosensitive layer of at least one photochemical acid generator which alters the surface activity of the acid-sensitive surfactant when the photochemical acid generator is photoactivated, and said photosensitive layer is strippably adhered to said light-opaque layer, wherein the peel strength of the unexposed photosensitive layer to said light-opaque layer is less than or greater than the peel strength of said light-opaque layer to said substrate, and the peel strength of the photoactivated photosensitive layer to said light-opaque layer respectively becomes greater than or less than the peel strength of said light-opaque layer to said substrate, and wherein the degree of difference in peel strengths between (a) the light-opaque layer and the photosensitive layer and (b) the light-opaque layer and the substrate is at least 10 percent both in the unexposed article and the photoactivated article.
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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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |