Patent US3884149A successfully refreshed from Google Patents.
US3884149A
Expired / Lapsed
US
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Printing process including physical development of the printing plate image
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1974-01-02
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Granted: 1975-05-20
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Expires: 1994-01-02
Abstract
Abstract Metal imaged media such as printing plate or printed circuit boards are produced by (a) forming a catalytic nuclei image on a copy medium; (b) uniformly and rapidly wetting the copy medium with a physical developer; (c) subjecting the copy medium and a thin layer of the physical developer to a rocking motion to cause the developer to flow across the image in predominantly laminar flow to provide a substantially uniform source of metal ion from the physical developer over all areas of the surface of the medium to form a metal image in the catalytic nuclei image areas; and (d) washing the developed copy medium to remove substantially all developer from the copy medium. In a preferred process the catalytic nuclei image is formed by exposure of a thin photosensitive layer. Preferably, the final metal image is adherently and intimately bonded to the support and used on a lithographic printing press to produce multiple copies. The invention also includes the apparatus utilized to carry out these processes.
Inventors
- 👤 Roger W Shores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:47
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/04; G03C; G03C5/00; G03C5/58; G03D5/00; G03D5/003; G03F; G03F7/00; G03F7/26; G03F7/30; H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H05K3/106; H05K3/18; H05K3/181; H05K3/182; H05K3/185; H05K3/187
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
198 words
PRINTING PROCESS COMPRISING: A. FORMING A CATALYTIC NUCLEI IMAGE ON A COPY MEDIUM COMPRISING A SUPERFICIALLY RUGHENED SUBSTRATE AND WHICH IMAGE IS CAPABLE OF CAUSING METAL DEPOSITION FROM A PHYSICAL DEVELOPER COMPRISING A SOLUTION OF REDUCIBLE METAL IONS; B. UNIFORMLY AND RAPIDLY WETTING SAID IMAGED COPY MEDIUM WITH A THIN LAYER OF SAID PHYSICAL DEVELOPER; C. SUBJECTING THE IMAGE PLATE AND THE THIN LAYER OF PHYSICAL DEVELOPER TO A ROCKING MOTION TO CAUSE THE PHYSICAL DEVELOPER TO FLOW BACK AND FORTH ACROSS THE CATALYTIC NUCLEI IMAGE IN PREDEOMIANTLY LAMINAR FLOW, SAID ROCKING MOTION BEING BETWEEN ABOUT 2* AND ABOUT 6* PITCH AT A RATE OF BETWEEN ABOUT 2 AND ABOUT 12 CYCLES PER MINUTE TO PROVIDE A SUBSTANTIALLY UNIFORM SOURCE OF METAL IONS IN ALL PORTIONS ON THE CATALYTIC NUCLEI IMAGE AREAS TO FORM METAL IMAGES ADHERENTLY AND INTIMATELY BONDED TO THE SUBSTRATE OF THE COPY MEDIUM; D. CONTACTING THE SURFACE OF THE IMAGED MEDIUM WITH A LITHOGRAPHIC PRINTING INK WHICH SELECTIVELY ADHERES TO THE IMAGE OR NON-IMAGE AREAS; AND E. CONTACTING THE INKED MEDIUM WITH A RECEPTOR SHEET FOR SAID INK TO THEREBY FORM A PRINT OF THE ORIGINAL. LIPOPHILIC BALANCE OF 15, AND II. DECYLDIETHANOL AMIDE.
Claim 2
Dependent Claim
198 words
PRINTING PROCESS COMPRISING: A. FORMING A CATALYTIC NUCLEI IMAGE ON A COPY MEDIUM COMPRISING A SUPERFICIALLY RUGHENED SUBSTRATE AND WHICH IMAGE IS CAPABLE OF CAUSING METAL DEPOSITION FROM A PHYSICAL DEVELOPER COMPRISING A SOLUTION OF REDUCIBLE METAL IONS; B. UNIFORMLY AND RAPIDLY WETTING SAID IMAGED COPY MEDIUM WITH A THIN LAYER OF SAID PHYSICAL DEVELOPER; C. SUBJECTING THE IMAGE PLATE AND THE THIN LAYER OF PHYSICAL DEVELOPER TO A ROCKING MOTION TO CAUSE THE PHYSICAL DEVELOPER TO FLOW BACK AND FORTH ACROSS THE CATALYTIC NUCLEI IMAGE IN PREDEOMIANTLY LAMINAR FLOW, SAID ROCKING MOTION BEING BETWEEN ABOUT 2* AND ABOUT 6* PITCH AT A RATE OF BETWEEN ABOUT 2 AND ABOUT 12 CYCLES PER MINUTE TO PROVIDE A SUBSTANTIALLY UNIFORM SOURCE OF METAL IONS IN ALL PORTIONS ON THE CATALYTIC NUCLEI IMAGE AREAS TO FORM METAL IMAGES ADHERENTLY AND INTIMATELY BONDED TO THE SUBSTRATE OF THE COPY MEDIUM; D. CONTACTING THE SURFACE OF THE IMAGED MEDIUM WITH A LITHOGRAPHIC PRINTING INK WHICH SELECTIVELY ADHERES TO THE IMAGE OR NON-IMAGE AREAS; AND E. CONTACTING THE INKED MEDIUM WITH A RECEPTOR SHEET FOR SAID INK TO THEREBY FORM A PRINT OF THE ORIGINAL. LIPOPHILIC BALANCE OF 15, AND II. DECYLDIETHANOL AMIDE.
Claim 3
Dependent Claim
23 words
Process as in claim 1 wherein the catalytic nuclei image is formed at least in part by exposure of a silver halide layer.
Claim 4
Dependent Claim
44 words
Process as in claim 2 wherein steps (b) and (c) are performed by placing the imaged copy medium in the bottom of a tray containing said physical developer in sufficient quantities to provide a developer depth above the plate surface of about 1/8 inch.
Claim 5
Dependent Claim
33 words
Process as in claim 3 wherein said physical developer comprises silver ions, ferrous ions, ferric ions, an organic acid complexing agent for the ferric ions, and an ionic surfactant as a stabilizing agent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |