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US4172732A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic light-sensitive material

Assignee: Fujifilm Holdings Corp
•
Filing: 1975-04-10
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Granted: 1979-10-30
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Expires: 1995-04-10
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Abstract

Abstract A photographic light-sensitive material having a photographic layer containing a copolymer of a styrene component, a maleic acid component and an acrylamide component in which the content of the acrylamide component is about 3 to 30 mol%.

Inventors

  • 👤 Takushi Miyazako
  • 👤 Nobuo Tsuji
  • 👤 Tadao Sugimoto
  • 👤 Kenji Yokoo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 07:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/06; G03C1/30; G03C1/307; G03C1/76; Y; Y10; Y10S; Y10S430/00; Y10S430/151

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 328 words
A photographic light-sensitive silver halide element having a photographic gelatin-containing layer containing a copolymer of a styrene component, a maleic acid component and an acrylamide component in which the content of the acrylamide component is about 3 to 30 mole% of said copolymer, the content of the maleic acid component is 35 to 50 mol% of said copolymer, said copolymer being present in an amount of from about 3 to 60% by weight of said gelatin and the acrylamide component is represented by the following general formula (I) ##STR13## in which R 1 and R 2 , which can be the same or different, each represents a hydrogen atom or a methyl group; and R 3 and R 4 , which can be the same or different, each represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms or R 3 and R 4 may combine as the non-metaliceatoms necessary for forming a 5-, 6- or 7-membered ring; the styrene component represented by the following general formula (II) ##STR14## in which R 5 represents a hydrogen atom or a methyl group; and R 6 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a hydroxyl group, a hydroxymethyl group, a cyano group, a nitro group or a halogen atom; and the said maleic acid component is represented by the following general formula (III) ##STR15## in which R 7 and R 8 , which can be the same or different, each represents a hydrogen atom, a methyl group, or a phenyl group; R 9 and R 10 , which can be the same or different, each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or an aralkyl group; and X and Y, which can be the same or different, each represents --O-- or --NH--; and --X--R 9 and R 10 --Y can combine together and represent --O--.
Claim 2
Dependent Claim 328 words
A photographic light-sensitive silver halide element having a photographic gelatin-containing layer containing a copolymer of a styrene component, a maleic acid component and an acrylamide component in which the content of the acrylamide component is about 3 to 30 mole% of said copolymer, the content of the maleic acid component is 35 to 50 mol% of said copolymer, said copolymer being present in an amount of from about 3 to 60% by weight of said gelatin and the acrylamide component is represented by the following general formula (I) ##STR13## in which R 1 and R 2 , which can be the same or different, each represents a hydrogen atom or a methyl group; and R 3 and R 4 , which can be the same or different, each represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms or R 3 and R 4 may combine as the non-metaliceatoms necessary for forming a 5-, 6- or 7-membered ring; the styrene component represented by the following general formula (II) ##STR14## in which R 5 represents a hydrogen atom or a methyl group; and R 6 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a hydroxyl group, a hydroxymethyl group, a cyano group, a nitro group or a halogen atom; and the said maleic acid component is represented by the following general formula (III) ##STR15## in which R 7 and R 8 , which can be the same or different, each represents a hydrogen atom, a methyl group, or a phenyl group; R 9 and R 10 , which can be the same or different, each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or an aralkyl group; and X and Y, which can be the same or different, each represents --O-- or --NH--; and --X--R 9 and R 10 --Y can combine together and represent --O--.
Claim 3
Dependent Claim 31 words
The photographic light-sensitive material of claim 1, wherein said layer further includes a natural high molecular weight material or a synthetic high molecular weight material other than gelatin as a binder.
Claim 4
Dependent Claim 23 words
The photographic light-sensitive material of claim 2, wherein said binder is a saccharide derivative, a cellulose derivative or a protein other than gelatin.
Claim 5
Dependent Claim 27 words
The photographic light-sensitive material of claim 1, wherein said layer further includes a binder selected from the group consisting of albumin, agar, hydroxyethyl cellulose or methyl cellulose.
Claim 6
Dependent Claim 35 words
The photographic light-sensitive material of claim 1, wherein said layer further includes a binder selected from the group consisting of polyvinyl alcohol, polyacrylamide, poly vinylpyrrolidone, polyacrylic acid, a polyacrylic acid ester or a copolymer thereof.
Claim 7
Dependent Claim 16 words
The photographic light-sensitive material of claim 1, wherein said layer further includes a hydrophobic polymer latex.
Claim 8
Dependent Claim 15 words
The photographic light-sensitive material of claim 1, wherein said layer further includes a matting agent.
Claim 9
Dependent Claim 21 words
The photographic light-sensitive material of claim 7, wherein said matting agent is particles of an inorganic compound or an organic compound.
Claim 10
Dependent Claim 65 words
The photographic light-sensitive material of claim 8, wherein said inorganic material is a silver halide, silica, glass beads, zinc carbonate, titanium oxide, strontium barium sulfate, or barium sulfate; and said organic compound is (1) a synthetic high molecular weight material selected from the group consisting of polystyrene, polymethylmethacrylate, polycarbonate, polytetrafluoroethylene, polyvinyl chloride, poly-α-methyl styrene and cellulose acetate propionate, (2) a fatty acid or (3) starch.
Claim 11
Dependent Claim 25 words
The photographic light-sensitive material of claim 1, wherein said copolymer is present in an amount of about 5 to 30% by weight of said gellatin.
Claim 12
Dependent Claim 15 words
The photographic light-sensitive material of claim 1, wherein the maleic acid component is maleic acid.
Claim 13
Dependent Claim 23 words
The photographic light-sensitive material of claim 1, wherein the content of said styrene component is about 20 to 62 mol% of said copolymer.

References Cited (Backward Citations)

GB1137909A Cited
US3723127A Cited
US3843364A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-10-29 1983-04-30 1983-10-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-10-29 1987-04-30 1987-10-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-10-29 1991-04-30 1991-10-30 $7700.00 Window Closed / Lapsed

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