Patent US4086383A successfully refreshed from Google Patents.
US4086383A
Expired / Lapsed
US
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Supports for photographic printing paper
Assignee: Yupo Corp
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Filing: 1977-05-19
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Granted: 1978-04-25
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Expires: 1997-05-19
Abstract
Abstract A support for a photographic printing paper comprising (a) a polyolefin synthetic resin layer containing a white inorganic filler, (b) an opaque layer of a synthetic paper or a synthetic resin film, (c) a synthetic resin layer having a greater stiffness than the polyolefin synthetic resin layer and (d) a synthetic paper or a synthetic resin film layer on which writing is possible, wherein the relative thickness of the polyolefin synthetic resin layer (a) is not more than about 20% of the total thickness of the support and the relative thickness of the synthetic resin layer (c) having greater stiffness than the polyolefin synthetic resin layer (a) is not less than about 15% of the total thickness of the support.
Inventors
- 👤 Susumu Yamano
- 👤 Jyunichi Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:54
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B7/022; B32B27/00; B32B27/06; B32B27/10; B32B27/08; B32B27/18; B32B27/20; B32B27/30; G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; B32B2264/00; B32B2264/10; B32B2264/102; B32B2307/00; B32B2307/40; B32B2307/41; B32B2307/70; B32B2307/75; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2323/00; B32B2323/04; B32B2323/046; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24942; Y10T428/2495; Y10T428/25; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A support for a photographic printing paper comprising a. a polyolefin synthetic resin layer containing a white inorganic filler; b. an opaque layer of a synthetic paper or a synthetic resin film; c. a synthetic resin layer having a greater stiffness than the polyolefin synthetic resin layer (a); and d. a layer of a synthetic paper or a synthetic resin film on which writing is possible; in this order, wherein the relative thickness of the polyolefin synthetic resin layer (a) is about 20% or less of the total thickness of the support and the relative thickness of the synthetic resin layer (c) having a greater stiffness than the polyolefin synthetic resin layer (a) is about 15% or higher of the total thickness of the support.
Claim 2
Dependent Claim
125 words
A support for a photographic printing paper comprising a. a polyolefin synthetic resin layer containing a white inorganic filler; b. an opaque layer of a synthetic paper or a synthetic resin film; c. a synthetic resin layer having a greater stiffness than the polyolefin synthetic resin layer (a); and d. a layer of a synthetic paper or a synthetic resin film on which writing is possible; in this order, wherein the relative thickness of the polyolefin synthetic resin layer (a) is about 20% or less of the total thickness of the support and the relative thickness of the synthetic resin layer (c) having a greater stiffness than the polyolefin synthetic resin layer (a) is about 15% or higher of the total thickness of the support.
Claim 3
Dependent Claim
18 words
The support for photographic printing paper according to claim 1, wherein the white inorganic filler is titanium oxide.
Claim 4
Dependent Claim
24 words
The support for photographic printing paper according to claim 1, wherein the polyolefin synthetic resin layer (a) is a layer of low density polyethylene.
Claim 5
Dependent Claim
47 words
The support for photographic printing paper according to claim 1, wherein the synthetic resin layer (c) having a greater stiffness than the polyolefin synthetic resin layer (a) is a layer of a material selected from the group consisting of high density polyethylene, polypropylene, polystyrene, or a polyester.
Claim 6
Dependent Claim
17 words
The support for photographic printing paper according to claim 1, wherein the support has a convex form.
References Cited (Backward Citations)
US3799828A
Cited
US3841943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |