US4997735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum contacting process for photographic elements
Assignee: Eastman Kodak Co
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Filing: 1989-04-28
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Granted: 1991-03-05
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Expires: 2009-04-28
Abstract
Abstract A process of contacting two photographic elements by juxtaposing the elements and drawing a vacuum between them is described wherein at least one of the elements has been exposed and processed and comprises a support having thereon, as the outermost layer facing the other element, a matte layer comprising matte particles and a polymeric binder. This process is improved by utilizing as the matte layer a layer comprising less than about 1.08 g/m 2 of binder and having matte particles that are present in an amount sufficient and have a mean diameter great enough so that the outermost layer has a roughness measurement, R a as defined by ANSI Standard B46.1 1985, of greater than about 1.00 microinches.
Inventors
- 👤 Timothy E. Nitschke
- 👤 Mark A. Lewis
- 👤 Ronald J. Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:18
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/115; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24405
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
In a process of contacting two photographic elements by juxtaposing the elements and drawing vacuum between them wherein at least one of the elements has been exposed and processed and comprises a support having thereon, as the outermost layer facing the other element, a matte layer comprising matte particles and a polymeric binder, the improvement wherein the matte layer comprises less than about 1.08 g/m 2 and the matte particles are present in an amount sufficient and have a mean diameter great enough so that said outermost layer has a roughness measurement, R a as defined by ANSI Standard B46.1 1985, of greater than about 1.00 microinches.
Claim 2
Dependent Claim
107 words
In a process of contacting two photographic elements by juxtaposing the elements and drawing vacuum between them wherein at least one of the elements has been exposed and processed and comprises a support having thereon, as the outermost layer facing the other element, a matte layer comprising matte particles and a polymeric binder, the improvement wherein the matte layer comprises less than about 1.08 g/m 2 and the matte particles are present in an amount sufficient and have a mean diameter great enough so that said outermost layer has a roughness measurement, R a as defined by ANSI Standard B46.1 1985, of greater than about 1.00 microinches.
Claim 3
Dependent Claim
20 words
A process according to claim 1 wherein said matte particles have a mean diameter of at least about 3 μm.
Claim 4
Dependent Claim
23 words
A process according to claims 1 or 2 wherein the matte layer comprises at least about 0.20 gm/m 2 of said matte particles.
Claim 5
Dependent Claim
25 words
A process according to claims 1 or 2 wherein said polymer binder is selected from the group consisting of polyurethanes, cellulose acetates, and poly(methyl methacrylate).
Claim 6
Dependent Claim
23 words
A process according to claim 3 wherein said polymer binder is selected from the group consisting of polyurethanes, cellulose acetates, and poly(methyl methacrylate).
Claim 7
Dependent Claim
25 words
A process according to claim 1 wherein said matte layer is on the opposite side of the support as a developed silver halide emulsion layer.
Claim 8
Dependent Claim
18 words
A process according to claim 6 wherein the matte layer side of the support has no gelatin layers.
Claim 9
Dependent Claim
25 words
A process according to any of claims 1, 2, 6, or 7 wherein the support of the element comprising the matte particles is a polyester.
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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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |