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US4971869A Expired / Lapsed US ⏱️ 0.0 years remaining

Color encoding photographic film

Assignee: Polaroid Corp
•
Filing: 1989-06-19
•
Granted: 1990-11-20
•
Expires: 2009-06-19
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Abstract

Abstract Color film which has relatively high photographic sensitivity, improved spatial sensitivity and reduced problems with aliasing between film stripe structure and scene content and from which full color photographic information can be extracted. An embodiment of the color film includes a black and white photographic film emulsion which is coated upon a substrate, which emulsion is covered with a repetitive pattern of a triad of: (a) color stripes such as yellow, green and cyan stripes wherein at least one of the colors is a nonprimary color; (b) color stripes of unsaturated hues such as, for example, pastel yellow, pastel green and pastel cyan stripes wherein at least one of the colors is a nonprimary unsaturated hue; or (c) color stripes of unsaturated hues of any color. Full color prints or enlargements are made by a hybrid process which includes electronic scanning to extract color information and an optical or an electronic method to extract detail information.

Inventors

  • 👤 William T. Plummer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 12:03
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/04; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735; H; H04; H04N; H04N1/00; H04N1/46; H04N1/48; H04N1/486

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 48 words
A color film comprising: a substrate; a panchromatic emulsion coated upon said substrate; and a filter covering at least a portion of said emulsion, said filter comprising a repetitive pattern of a unit of adjacent colored cells where at least one of said cells is a subtractive primary.
Claim 2
Dependent Claim 48 words
A color film comprising: a substrate; a panchromatic emulsion coated upon said substrate; and a filter covering at least a portion of said emulsion, said filter comprising a repetitive pattern of a unit of adjacent colored cells where at least one of said cells is a subtractive primary.
Claim 3
Dependent Claim 12 words
The color film of claim 1 wherein said unit comprises color stripes.
Claim 4
Dependent Claim 16 words
The color film of claim 2 wherein said unit comprises yellow, green and cyan color stripes.
Claim 5
Dependent Claim 16 words
The color film of claim 1 wherein said unit comprises four cells of substantially equal area.
Claim 6
Dependent Claim 20 words
The color film of claim 4 wherein said unit comprises one yellow cell, two green cells and one cyan cell.
Claim 7
Dependent Claim 50 words
A color film comprising: a substrate; a panchromatic emulsion coated on said substrate; and a filter covering at least a portion of said emulsion, said filter being comprised of a repetitive pattern of a unit of adjacent colored cells where at least one of said cells is a pastel color.
Claim 8
Dependent Claim 50 words
A color film comprising: a substrate; a panchromatic emulsion coated on said substrate; and a filter covering at least a portion of said emulsion, said filter being comprised of a repetitive pattern of a unit of adjacent colored cells where at least one of said cells is a pastel color.
Claim 9
Dependent Claim 15 words
The color film of claim 6 wherein said cell of said unit comprise color stripes.
Claim 10
Dependent Claim 17 words
The color film of claim 7 wherein said unit comprises pastel yellow, green and cyan color stripes.
Claim 11
Dependent Claim 17 words
The color film of claim 7 wherein said unit comprises pastel red, green and blue color stripes.
Claim 12
Dependent Claim 16 words
The color film of claim 6 wherein said unit comprises four cells of substantially equal area.
Claim 13
Dependent Claim 23 words
The color film of claim 7 wherein said unit comprises one pastel yellow cell, two pastel green cells and one unsaturated cyan cell.
Claim 14
Dependent Claim 22 words
The color film of claim 10 wherein said unit comprises one pastel yellow cell, two white cells and one pastel cyan cell.

References Cited (Backward Citations)

JPS5311016A Cited
JPS5539824A Cited
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US4307165A Cited
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US4610536A Cited
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US4757351A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-11-19 1994-05-21 1994-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-11-19 1998-05-21 1998-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-11-19 2002-05-21 2002-11-20 $7700.00 Window Closed / Lapsed

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