US5100770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for photographic materials
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1990-10-05
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Granted: 1992-03-31
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Expires: 2010-10-05
Abstract
Abstract Disclosed is a support used for photographic materials which is prevented from staining of the edge portion which is caused by permeation of developing solution from cut section. This support for photographic materials comprises a base paper both sides of which are coated with a resin, said base paper containing a titanium oxide coated with at least one metal oxide selected from the oxides of Al, Si, Mn, Zn and Ti.
Inventors
- 👤 Tetsuya Ashida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/253; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A support for photographic materials, which comprises a base paper coated with a resin on both sides, said base paper containing titanium oxide coated with at least one metal oxide selected from the group consisting of oxides of Al, Si, Mn, Zn and Ti, wherein coating amount of the metal oxide is 1-10% by weight of the titanium oxide, and wherein content of the titanium oxide is 5-20% by weight of the base paper.
Claim 2
Dependent Claim
74 words
A support for photographic materials, which comprises a base paper coated with a resin on both sides, said base paper containing titanium oxide coated with at least one metal oxide selected from the group consisting of oxides of Al, Si, Mn, Zn and Ti, wherein coating amount of the metal oxide is 1-10% by weight of the titanium oxide, and wherein content of the titanium oxide is 5-20% by weight of the base paper.
Claim 3
Dependent Claim
25 words
A support according to claim 1, wherein the coating of titanium oxide with at least one metal oxide is carried out by a wet process.
Claim 4
Dependent Claim
30 words
A support according to claim 1, wherein the coating of titanium oxide with at least one metal oxide is carried out in a slurry of at least one metal oxide.
Claim 5
Dependent Claim
23 words
A support according to claim 1, wherein the base paper has been made from a pulp slurry containing metal oxide coated titanium oxide.
Claim 6
Dependent Claim
27 words
A support according to claim 1, wherein the content of the titanium oxide is 5 to 10% by weight based on the weight of the base paper.
Claim 7
Dependent Claim
27 words
A support according to claim 1, wherein the content of the titanium oxide is 10 to 20% by weight based on the weight of the base paper.
References Cited (Backward Citations)
US3730830A
Cited
JPS5331125A
Cited
US4293625A
Cited
US4447524A
Cited
US4665013A
Cited
US4801509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |