US4363871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic material
Assignee: Konica Minolta Inc
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Filing: 1981-04-27
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Granted: 1982-12-14
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Expires: 2001-04-27
Abstract
Abstract A multi-layer light-sensitive photographic material comprising a support and a light-sensitive layer, which have a surface layer which does not adhere even under a high temperature and high humidity conditions when the front surface layer thereof is contacted with the other surface layer and which is hardly subject to scratching and free from the so-called "blooming" phenomenon. The light-sensitive material according to this invention comprises, in at least one of the front and back sides thereof, at least one light-insensitive layer containing a high polymer having at least 20% by weight of a repeating unit represented by the formula (I): ##STR1## wherein R 1 represents a hydrogen atom or a methyl group, and R 2 represents a straight chain alkyl group having 12 to 24 carbon atoms.
Inventors
- 👤 Toshiaki Shibue
- 👤 Koichi Nagayasu
- 👤 Tohru Kobayashi
- 👤 Kouji Tokitou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
A multi-layer light-sensitive silver halide photographic material comprising a support and a light-sensitive silver halide emulsion layer, said support having a front side and a back side, which further comprises, in at least one of the front and back sides thereof, at least one light-insensitive layer containing a high polymer having at least 20% by weight of a repeating unit represented by the formula (I): ##STR45## wherein R 1 represents a hydrogen atom or a methyl group, and R 2 represents a straight chain alkyl group having 12 to 24 carbon atoms.
Claim 2
Dependent Claim
92 words
A multi-layer light-sensitive silver halide photographic material comprising a support and a light-sensitive silver halide emulsion layer, said support having a front side and a back side, which further comprises, in at least one of the front and back sides thereof, at least one light-insensitive layer containing a high polymer having at least 20% by weight of a repeating unit represented by the formula (I): ##STR45## wherein R 1 represents a hydrogen atom or a methyl group, and R 2 represents a straight chain alkyl group having 12 to 24 carbon atoms.
Claim 3
Dependent Claim
25 words
The light-sensitive silver halide photographic material as claimed in claim 1, wherein said light-insensitive layer is located in the back side of the light-sensitive material.
Claim 4
Dependent Claim
36 words
The light-sensitive silver halide photographic material as claimed in claim 2, wherein said light-insensitive layer is located in said back side which comprises a plurality of layers and said light-insensitive layer is the outermost layer thereof.
Claim 5
Dependent Claim
28 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein said light-insensitive layer constitutes a protecting layer for the light-sensitive silver halide emulsion layer.
Claim 6
Dependent Claim
25 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein said high polymer is insoluble in water or a developing solution.
Claim 7
Dependent Claim
27 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein said high polymer comprises at least 50% by weight of the repeating unit.
Claim 8
Dependent Claim
38 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein the copolymer component for said high polymer giving a unit other than the repeating unit represented by formula (I) is a radical-polymerizable vinyl monomer.
Claim 9
Dependent Claim
27 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein R 2 represents a dodecyl group, a tridecyl group or an octadecyl group.
Claim 10
Dependent Claim
54 words
The light-sensitive silver halide photographic material as claimed in claim 8, wherein said high polymer is polymerized from at least one monomer selected from the group consisting of lauryl acrylate, lauryl methacrylate, dodecyl acrylate, tridecyl methacrylate, stearyl acrylate and stearyl methacrylate, or by co-polymerizing said at least one monomer with an ethylenically unsaturated monomer.
Claim 11
Dependent Claim
48 words
The light-sensitive silver halide photographic material as claimed in claim 9, wherein said high polymer is a copolymer and said ethylenically unsaturated monomer is selected from the group consisting of an olefin, an acrylic acid or methacrylic acid ester, an acrylamide, styrene or a substituted styrene, and acrylonitrile.
Claim 12
Dependent Claim
72 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein at least one light-sensitive silver halide emulsion layer is provided on the front side of the support, and on the back side of the support, there are provided (i) at least one layer containing a hydrophobic polymer and (ii) at least one said light-insensitive layer, said layer (i) being located nearer to the support than said layer (ii).
Claim 13
Dependent Claim
60 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein, on the back side of the support, there are provided (i) at least one said light-insensitive layer which also contains a hydrophobic polymer and (ii) at least one layer containing an antistatic agent, said layer (ii) being located nearer to the support than said layer (i).
Claim 14
Dependent Claim
63 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein, on the back side of the support, there are provided (i) at least one said light-insensitive layer containing further a hydrophobic polymer and (ii) at least one layer containing an antistatic agent and a hydrophobic polymer, said layer (ii) being located nearer to the support than said layer (i).
Claim 15
Dependent Claim
58 words
The light-sensitive silver halide photographic material as claimed in claim 1 or 3, wherein, on the back side of the support, there are provided (i) at least one said light-insensitive layer and (ii) at least one layer containing an antistatic agent and a hydrophobic polymer, said layer (ii) being located nearer to the support than said layer (i).
Claim 16
Dependent Claim
25 words
The light-sensitive silver halide photographic material as claimed in claim 9, wherein said high polymer comprises at least 50% by weight of the repeating unit.
Claim 17
Dependent Claim
25 words
The light-sensitive silver halide photographic material as claimed in claim 10, wherein said high polymer comprises at least 50% by weight of the repeating unit.
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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |