US4133688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic carrier material containing thermoplastic microspheres
Assignee: Felex Schoeller Jr and GmbH and Co KG
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Filing: 1977-07-08
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Granted: 1979-01-09
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Expires: 1997-07-08
Abstract
Abstract A photographic carrier material comprising a cellulose sheet which is coated on both surfaces with a polyolefin resin and in which hollow, thermoplastic microspheres are uniformly mixed therein in an amount of from 0.5 - 5.0 weight percent.
Inventors
- 👤 Wieland H. Sack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:04
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/50; D21H21/52; D21H21/54; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10S; Y10S264/00; Y10S264/06; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249963; Y10T428/249971; Y10T428/249972; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
66 words
A photographic carrier material comprising a dried cellulose sheet coated on both surfaces thereof with a polyolefin resin suitable for the deposition of at least one light sensitive liquid developable layer thereon, the improvement in said coated sheet comprising a plurality of hollow, thermoplastic microspheres substantially uniformly mixed in said cellulose sheet in an amount of about 0.5 - 5.0 weight percent based on the cellulose.
Claim 2
Dependent Claim
66 words
A photographic carrier material comprising a dried cellulose sheet coated on both surfaces thereof with a polyolefin resin suitable for the deposition of at least one light sensitive liquid developable layer thereon, the improvement in said coated sheet comprising a plurality of hollow, thermoplastic microspheres substantially uniformly mixed in said cellulose sheet in an amount of about 0.5 - 5.0 weight percent based on the cellulose.
Claim 3
Dependent Claim
17 words
The carrier material of claim 1 wherein the amount of microspheres is 3.0 weight percent or less.
Claim 4
Dependent Claim
21 words
The carrier material of claim 1 including said light sensitive layer in combination therewith, said light sensitive layer comprising silver salts.
Claim 5
Dependent Claim
14 words
The carrier material of claim 1 wherein said microspheres are at least partially inflated.
Claim 6
Dependent Claim
27 words
The carrier material of claim 1 including 0.1 - 1 weight percent of a water resisting agent and 1 - 2 weight percent of a retention agent.
Claim 7
Dependent Claim
16 words
The carrier material of claim 5 wherein said water resisting agent is a dimeric alkyl composition.
Claim 8
Dependent Claim
15 words
The carrier material of claim 5 wherein said retention agent is a cationic polyamide resin.
Claim 9
Dependent Claim
15 words
The carrier material of claim 1 wherein said microspheres comprise a vinylidene chloride-acrylonitrile inter polymer.
Claim 10
Dependent Claim
19 words
The carrier material of claim 8 wherein at least some of said microspheres are filled with a blowing agent.
Claim 11
Dependent Claim
25 words
The carrier material of claim 1 wherein said polyolefin coating on at least one of the surfaces of said sheet includes a pigment mixed therein.
Claim 12
Dependent Claim
12 words
The carrier material of claim 10 wherein said pigment comprises titanium dioxide.
Claim 13
Dependent Claim
22 words
The carrier material of claim 1 wherein said microspheres are inflated prior to the coating of said surfaces with said polyolefin resin.
Claim 14
Dependent Claim
35 words
The carrier material of claim 1 wherein the surfaces of said sheet are treated, prior to the coating of said surfaces with said polyolefin resin, to improve the adhesion of said resin to said surfaces.
Claim 15
Dependent Claim
23 words
The carrier material of claim 13 wherein the surfaces of said sheet are sized, and said coating is coated on said sized surfaces.
References Cited (Backward Citations)
US2838397A
Cited
US3483077A
Cited
US3242238A
Cited
US3253064A
Cited
US3411908A
Cited
US3293114A
Cited
US3379799A
Cited
US3662043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |