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US4558002A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic paper material with resin coatings and pigment mixture

Assignee: Fujifilm Holdings Corp
•
Filing: 1984-03-27
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Granted: 1985-12-10
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Expires: 2004-03-27
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Abstract

Abstract A photographic paper material comprising (1) a paper support coated on both sides with a synthetic resin film, (2) a hydrophilic colloid layer containing a white pigment provided on one side of the paper support (1), and (3) a light-sensitive silver halide emulsion layer on the hydrophilic colloid layer (2), wherein a dye or pigment which is not decolored during photographic processing is present in the hydrophilic colloid layer (2) and/or the synthetic resin film on the paper support (1).

Inventors

  • 👤 Yasuo Aotsuka
  • 👤 Soichiro Yamamoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 11:39
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/775; G03C1/79

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 165 words
A photographic paper material comprising (1) a support comprised of a paper substrate which is coated on both sides with a synthetic hydrophobic resin film, (2) a hydrophilic colloid layer containing a white pigment provided on one side of the support (1), and (3) a light-sensitive silver halide emulsion layer on the hydrophilic colloid layer (2), wherein a dye or pigment having an absorption within the region of 500 to 800 nm and which is not decolored during photographic processing is present in the hydrophilic colloid layer (2) and/or the synthetic resin film of the support (1), wherein the colloid layer contains not less than 30% by volume of white pigment, and wherein the dye or pigment which is not decolored is present in an amount such that the surface reflection characteristics of the hydrophilic colloid layer containing the white pigment as measured and expressed according to JIS Z 8730 fall within the ranges of L=90 or more, A=0.5 to 1.5 and b=(-3) to (-5).
Claim 2
Dependent Claim 165 words
A photographic paper material comprising (1) a support comprised of a paper substrate which is coated on both sides with a synthetic hydrophobic resin film, (2) a hydrophilic colloid layer containing a white pigment provided on one side of the support (1), and (3) a light-sensitive silver halide emulsion layer on the hydrophilic colloid layer (2), wherein a dye or pigment having an absorption within the region of 500 to 800 nm and which is not decolored during photographic processing is present in the hydrophilic colloid layer (2) and/or the synthetic resin film of the support (1), wherein the colloid layer contains not less than 30% by volume of white pigment, and wherein the dye or pigment which is not decolored is present in an amount such that the surface reflection characteristics of the hydrophilic colloid layer containing the white pigment as measured and expressed according to JIS Z 8730 fall within the ranges of L=90 or more, A=0.5 to 1.5 and b=(-3) to (-5).
Claim 3
Dependent Claim 16 words
The material as claimed in claim 1, wherein the synthetic resin film is a polyethylene film.
Claim 4
Dependent Claim 14 words
The material as claimed in claim 1, wherein the white pigment is titanium dioxide.
Claim 5
Dependent Claim 29 words
The material as claimed in claim 1, wherein the hydrophilic colloid layer (2) containing a white pigment contains said dye or pigment which is not decolored during photographic processing.
Claim 6
Dependent Claim 50 words
The material as claimed in claim 1, wherein said hydrophilic colloid layer is in contact with said synthetic resin film on one side of the support, and said synthetic resin film which is in contact with the hydrophilic colloid layer contains said dye or pigment not decolored during photographic processing.
Claim 7
Dependent Claim 15 words
The material as claimed in claim 1, wherein the resin film is a polyolefin film.
Claim 8
Dependent Claim 16 words
The material as claimed in claim 1, wherein white pigment is present in the resin film.
Claim 9
Dependent Claim 55 words
The material as claimed in claim 1, wherein the dye or pigment which is not decolored is present in the synthetic resin film layer and is employed in an amount such that the surface reflection rate of the resin layer determined according to JIS Z 8730 is 70% or less at 400 to 700 nm.

References Cited (Backward Citations)

US3369901A Cited
US3501298A Cited
US3582339A Cited
US4169188A Cited
US4220471A Cited
US4237206A Cited
US4296198A Cited
US4209584A Cited
US4312937A Cited
JPS64325A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-09 1989-06-10 1989-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-09 1993-06-10 1993-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-09 1997-06-10 1997-12-10 $7700.00 Window Closed / Lapsed

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