US3833380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic elements
Assignee: Eastman Kodak Co
•
Filing: 1972-09-26
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Granted: 1974-09-03
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Expires: 1992-09-26
Abstract
Abstract Color photographic elements having improved resistance to ultraviolet radiation, improved sharpness and low propensity to stain in the non-image areas comprise a paper support having coated thereon a silver halide emulsion layer which is sensitive to a visible region of the spectrum, which contains an incorporated color forming coupler. The paper support contains a non-fluorescing ultraviolet radiation absorbing compound and has, on its emulsion side surface, an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 m Mu .
Inventors
- 👤 I Crawford
- 👤 F Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:55
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/775; G03C1/79; Y; Y10; Y10S; Y10S430/00; Y10S430/132
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
126 words
A photographic element comprising a silver halide emulsion layer which is sensitive to a visible region of the spectrum and contains an incorporated color forming coupler, said layer being coated upon a surface on a paper support, said surface comprising polyethylene impregnated with an ultraviolet radiation absorbing compound which does not emit any substantial amount of absorbed radiation in the visible region of the spectrum, said polyethylene surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 m Mu .
Claim 2
Dependent Claim
20 words
A photographic element of claim 1 in which said silver halide emulsion has coated thereon an ultraviolet radiation absorbing compound.
Claim 3
Dependent Claim
19 words
A photographic element of claim 1 in which said silver halide emulsion layer contains a hydroxy-substituted aromatic antistain agent.
Claim 4
Dependent Claim
106 words
A photographic element comprising a silver halide emulsion layer which is sensitive to a visible region of the spectrum and conTains an incorporated color forming coupler, said layer being coated upon a surface on a paper support, said surface comprising polyethylene impregnated with titanium dioxide, said polyethylene surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 m Mu .
Claim 5
Dependent Claim
16 words
A photographic element of claim 5 in which said titanium dioxide is predominately rutile titanium dioxide.
Claim 6
Dependent Claim
27 words
A photographic element of claim 5 in which said titanium dioxide is employed in a concentration of from 50 milligrams to about 3 grams per square foot.
Claim 7
Dependent Claim
16 words
A photographic element of claim 1 in which the ultraviolet radiation absorbing compound is a benzotriazole.
Claim 8
Dependent Claim
16 words
A photographic element of claim 1 in which the ultraviolet radiation absorbing compound is a thiazolidone.
Claim 9
Dependent Claim
27 words
A photographic element of claim 1 in which said coupler is an incorporated pyrazolone magenta coupler and said visible region of the spectrum is the green region.
Claim 10
Dependent Claim
133 words
A photographic element comprising: a. a silver halide emulsion layer having a blue sensitive layer containing an incorporated yellow forming coupler, b. a silver halide emulsion layer containing a red sensitive layer containing an incorporated cyan forming coupler, and c. a green sensitive layer containing a magenta forming coupler, d. said layers being coated upon a surface on a paper support, e. said surface comprising a polyolefin impregnated with titanium dioxide, f. said polyolefin surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 m Mu .
Claim 11
Dependent Claim
16 words
A photographic element of claim 11 in which said titanium dioxide is predominately rutile titanium dioxide.
Claim 12
Dependent Claim
12 words
A photographic element of claim 11 in which said polyolefin is polyethylene.
Claim 13
Dependent Claim
126 words
A photographic element comprising a developed and fixed photographic emulsion layer containing a developed dye image subject to fading by the action of ultraviolet radiation, said layer being coated upon a surface on a paper support, said surface comprising a polyolefin impregnated with an ultraviolet radiation absorbing compound, which does not emit any substantial amount of absorbed radiation in the visible region of the spectrum, said polyolefin surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 m Mu .
Claim 14
Dependent Claim
105 words
A photographic element comprising a developed and fixed photographic emulsion layer containing a developed dye image subject to fading by the action of ultraviolet radiation, said layer being coated upon a surface on a paper support, said surface comprising a polyolefin impregnated with titanium dioxide, said polyolefin surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 Mu .
Claim 15
Dependent Claim
104 words
A photographic element comprising a developed and fixed photographic emulsion layer containing a developed dye image subject to fading by the action of ultraviolet radiation, said layer being coated upon a surface on a paper support, said surface comprisinG polyethylene impregnated with titanium dioxide, said polyethylene surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 Mu .
Claim 16
Dependent Claim
16 words
A photographic element of claim 16 in which said titanium dioxide is predominately rutile titantium dioxide.
Claim 17
Dependent Claim
117 words
A photographic element comprising a developed and fixed photographic emulsion layer containing a developed dye image subject to fading by the action of ultraviolet radiation, said layer being coated upon a surface on a paper support, said surface comprising polyethylene impregnated with 50 milligrams to about 3 grams per square foot of titanium dioxide predominately rutile form, said polyethylene surface having an average reflectance of no more than about 25 percent over wavelengths in the ultraviolet region of the spectrum in the range of about 360 to about 400 millimicrons and at least about 60 percent, at a wavelength in the visible region of the spectrum in the range of about 420 to about 500 Mu .
References Cited (Backward Citations)
US2647835A
Cited
US2698235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |