US4614688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for photographic paper
Assignee: Fujifilm Holdings Corp
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Filing: 1984-11-06
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Granted: 1986-09-30
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Expires: 2004-11-06
Abstract
Abstract A photographic paper support having superior moisture resistance and graphic properties is provided. The support has formed on its back surface a graphic property-imparting layer. The layer is composed of (a) an inorganic pigment having a number average particle diameter of from 0.2 to 2.0 microns and an oil absorbing degree of not more than 100 cc/100 g and (b) a resin cured by irradiation with electron beams.
Inventors
- 👤 Shigehisa Tamagawa
- 👤 Takashi Takayanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:11
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/80; D21H19/84; D21H19/36; D21H19/44; D21H19/46; D21H19/48; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31725; Y10T428/3175; Y10T428/31757; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31906; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
A support for photographic paper, said support having formed on a back surface thereof a graphic property-imparting layer composed of (a) an inorganic pigment having a number average particle diameter of from 0.2 to 2.0 microns and an oil absorbing degree of not more than 100 cc/100 g and (b) a resin cured by irradiation with electron beams.
Claim 2
Dependent Claim
58 words
A support for photographic paper, said support having formed on a back surface thereof a graphic property-imparting layer composed of (a) an inorganic pigment having a number average particle diameter of from 0.2 to 2.0 microns and an oil absorbing degree of not more than 100 cc/100 g and (b) a resin cured by irradiation with electron beams.
Claim 3
Dependent Claim
25 words
A support as in claim 1, wherein the inorganic pigment is at least one selected from the group consisting of crystalline silica and synthetic alumina-silica.
Claim 4
Dependent Claim
41 words
A support as in claim 1, wherein the support on which the graphic property-imparting layer is formed is a base paper composed mainly of natural pulp, or a support obtained by coating both surfaces of a base paper with a polyolefin.
Claim 5
Dependent Claim
18 words
A support as in claim 3, wherein the polyolefin is high-density polyethylene, low-density polyethylene, or a mixture thereof.
Claim 6
Dependent Claim
25 words
A support as in claim 1, wherein the weight ratio of (b) resin cured by irradiation to (a) inorganic pigment is from 3/1 to 1/3.
Claim 7
Dependent Claim
17 words
A support as in claim 5, wherein the inorganic pigment is crystalline silica, synthetic alumina-silica, or both.
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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |