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US3830649A Expired / Lapsed US ⏱️ 0.0 years remaining

Metal photographic plate comprising a silver halide and process

Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1973-10-19
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Granted: 1974-08-20
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Expires: 1993-10-19
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Abstract

Abstract A metallic base photographic plate having images adherently and preferably conductively bonded to the metallic support is produced by exposing a copy medium comprising silver halide on a superficially roughened metallic support wherein the photoconductor is substantially photoconductively insulated from the metallic support, and contacting this copy medium with chemically reactive image-forming materials, such as a physical developer. A preferred process is one utilizing a copy medium capable of being rapidly processed and having a layer of a photoconductor-binder emulsion on a roughened metallic support and a physical developer capable of producing an image adherently and conductively bonded to the metallic support. The plate produced by this invention is useful as a printing plate, name plate, printed circuit and the like.

Inventors

  • 👤 R Gracia
  • 👤 R Laughrey
  • 👤 P Tuohey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 09:35
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/52; G03C1/62; G03C1/76; G03C1/91; G03C1/93; G03C5/00; G03C5/58; G03F; G03F7/00; G03F7/004; G03F7/06; G03G; G03G13/00; G03G13/26; G03G13/28; G03G17/00; G03G17/02; H05K3/106; H05K3/20

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 51 words
Medium as in claim 1 wherein the silver halide layer comprises silver halide deposited in solvent-permeable binder and wherein the silver halide is present in this layer in an amount from about 1 part by weight to about 6 parts by weight of silver halide per part by weight of binder.
Claim 2
Dependent Claim 12 words
Medium as in claim 1 including a solvent-impermeable barrier oxide insulating layer.
Claim 3
Dependent Claim 34 words
Medium as in claim 2 wherein the silver halide is silver chloride having an excess chloride content and wherein the silver halide layer has a coating weight of about 0.5 grams per square meter.
Claim 4
Dependent Claim 23 words
Medium as in claim 1 wherein the support is selected from at least one member of the group consisting of aluminum and steel.
Claim 5
Dependent Claim 26 words
Medium as in claim 1 wherein the metallic image is selected from at least one member of the group consisting of copper, silver, nickel, and tin.
Claim 6
Dependent Claim 11 words
Medium as in claim 2 wherein the binder is solvent removable.
Claim 7
Dependent Claim 10 words
Medium as in claim 7 wherein the solvent is water.
Claim 8
Dependent Claim 50 words
Medium as in claim 6 wherein the metallic image is silver of increased oleophilicity, and the roughened metallic support is of increased hydrophilicity and is capable of use as a printing plate on a conventional offset lithographic press under ordinary operating conditions to produce at least 5,000 inked paper prints.
Claim 9
Dependent Claim 51 words
Medium as in claim 9 wherein the increased oleophilicity is caused by contacting the silver image with a bath selected from at least one member of the group consisting of a copperizing bath, a mercaptan-compound containing bath, an oleophilic lacquer solution and a bath containing a mercaptan compound and phosphoric acid.
Claim 10
Dependent Claim 31 words
Medium as in claim 1 wherein the metallic image comprises silver and the support is anodized aluminum having an oxide layer of from about 100 to about 200 A. in thickness.
Claim 11
Dependent Claim 17 words
Medium as in claim 1 wherein the metallic image comprises copper and the support is anodized aluminum.

References Cited (Backward Citations)

US3425830A Cited
US3471288A Cited
US3551150A Cited
US3600166A Cited
US3634083A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-19 1978-02-18 1978-08-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-19 1982-02-18 1982-08-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-19 1986-02-18 1986-08-20 $7700.00 Window Closed / Lapsed

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