← Back to Patent Explorer
US3770431A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic elements containing ballasted resorcinols

Assignee: Eastman Kodak Co
•
Filing: 1971-09-16
•
Granted: 1973-11-06
•
Expires: 1991-09-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Photographic elements are disclosed which comprise a support and at least one layer thereon containing a ballasted resorcinol. In one embodiment, the ballasted resorcinols are utilized as scavengers for development reaction by-products or contaminants. The ballasted resorcinols are especially useful for scavenging oxidized color developers.

Inventors

  • 👤 J Gates
  • 👤 I Salminen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 15:31
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39212; G03C7/39216; G03C1/00; G03C1/005; G03C1/06; G03C1/35; G03C8/00

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 26 words
A photographic element according to claim 1 wherein said ballasted resorcinol contains hydroxy groups in the 1- and 3-position and a ballast group in the 5-position.
Claim 2
Dependent Claim 41 words
A photographic element according to claim 1 wherein said photographic element comprises from about 5 mg. to about 100 mg. per square foot of said ballasted resorcinol and the ballast group of said ballasted resorcinol contains at least eight carbon atoms.
Claim 3
Dependent Claim 21 words
A photographic element according to claim 1 wherein said photographic element comprises at least one layer containing a silver halide emulsion.
Claim 4
Dependent Claim 21 words
A photographic element according to claim 1 wherein said photographic element comprises at least one layer containing a photographic color-forming coupler.
Claim 5
Dependent Claim 17 words
A photographic element according to claim 1 wherein said ballasted resorcinol compound is represented by the formula:
Claim 6
Dependent Claim 13 words
A photographic element according to claim 1 wherein said ballasted resorcinol is 5-n-pentadecylresorcinol.
Claim 7
Dependent Claim 13 words
A photographic element according to claim 1 wherein said ballasted resorcinol is 5-n-pentadecylenecarbon-amidoresorcinol.
Claim 8
Dependent Claim 25 words
A photographic element according to claim 1 which comprises at least one layer containing a silver halide emulsion having associated therewith a photographic color coupler.
Claim 9
Dependent Claim 148 words
In a photographic film unit which is adapted to be processed by passing said unit between a pair of juxtaposed pressure-applying members comprising: a. a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible coupler capable of reacting with oxidized aromatic primary amino color developing agent to produce a diffusible dye; b. a dye image-receiving layer; and c. a rupturable container containing an alkaline processing composition and which is adapted to be positioned during processing of said film unit so that a compressive force applied to said container by said pressure-applying members will effect a discharge of the container''s contents within said film unit; said film unit containing an aromatic amino color developing agent; the improvement comprising employing a developing agent scavenger layer comprising a ballasted resorcinol in a polymeric binder.
Claim 10
Dependent Claim 28 words
The film unit of claim 10 wherein said dye image-receiving layer is located in said photosensitive element between said support and the lowermost photosensitive silver halide emulsion layer.
Claim 11
Dependent Claim 20 words
The film unit of claim 10 which contains a timing layer between said scavenger layer and said dye image-receiving layer.
Claim 12
Dependent Claim 12 words
The film unit of claim 10 which also contains a pH-lowering material.
Claim 13
Dependent Claim 17 words
The film unit according to claim 10 wherein said ballasted resorcinol is a compound of the formula:
Claim 14
Dependent Claim 155 words
In a process of forming a transfer image comprising: a. imagewise-exposing a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondif-fusible coupler capable of reacting with oxidized aromatic primary amino color developing agent to produce a diffusible dye; b. treating the layer outermost from the support of said photosensitive element with an alkaline processing composition to effect development of each of said exposed silver halide emulsion layers with an aromatic primary amino color developing agent; c. forming an imagewise distribution of diffusible dye image-providing material as a function of said image-wise exposure of each said silver halide emulsion layer; and d. at least a portion of each said imagewise distribution of diffusible dye image-providing material diffusing to a dye image-receiving layer; the improvement comprising employing a developing agent scavenger layer comprising a ballasted resorcinol in a polymeric binder.

References Cited (Backward Citations)

US3362819A Cited
US3312549A Cited
US3582333A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-05 1977-05-07 1977-11-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-05 1981-05-07 1981-11-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-05 1985-05-07 1985-11-06 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag