GB1413904A - Replication of a surface of a soft substrate - Google Patents

Replication of a surface of a soft substrate

Info

Publication number
GB1413904A
GB1413904A GB1779573A GB1779573A GB1413904A GB 1413904 A GB1413904 A GB 1413904A GB 1779573 A GB1779573 A GB 1779573A GB 1779573 A GB1779573 A GB 1779573A GB 1413904 A GB1413904 A GB 1413904A
Authority
GB
United Kingdom
Prior art keywords
master
stamping
nickel
mils
april
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1779573A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1413904A publication Critical patent/GB1413904A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thin Magnetic Films (AREA)
  • Moulding By Coating Moulds (AREA)
  • Physical Vapour Deposition (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

1413904 Electro-forming nickel record stamping master; vapour depositing Cr and Au layers for replicas RCA CORPORATION 13 April 1973 [19 April 1972] 17795/73 Headings C7B and C7F [Also in Division G5] A stamping master for making video disc records is formed by mounting a recorded master on a turntable in a vacuum chamber, vapour depositing thereon a layer of chromium between 50-500Š thick followed by a layer of gold between 100-2000Š thick as the turntable revolves at about 60 r.p.m., removing the coated master from the chamber and electrolytically plating the gold surface in a first bath with bright nickel to a thickness of 0.3 to 2 mils, followed in a second bath with a plating of standard nickel to a final thickness of about 10 mils. The stamping master is then separated from the recorded master.
GB1779573A 1972-04-19 1973-04-13 Replication of a surface of a soft substrate Expired GB1413904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24565972A 1972-04-19 1972-04-19

Publications (1)

Publication Number Publication Date
GB1413904A true GB1413904A (en) 1975-11-12

Family

ID=22927567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1779573A Expired GB1413904A (en) 1972-04-19 1973-04-13 Replication of a surface of a soft substrate

Country Status (6)

Country Link
JP (1) JPS5213501B2 (en)
CA (1) CA1017278A (en)
DE (1) DE2319088A1 (en)
FR (1) FR2180746B1 (en)
GB (1) GB1413904A (en)
NL (1) NL7305462A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51116124A (en) * 1975-04-04 1976-10-13 Pioneer Electronic Corp Electrocasting mold drawing method
GB2015577B (en) * 1978-01-30 1983-02-02 Citizen Watch Co Ltd Decorative plate for a timepiece
US4262875A (en) * 1979-08-17 1981-04-21 Rca Corporation Information record stampers
EP0081649B1 (en) * 1981-12-11 1987-01-14 Discovision Associates Method for forming optical discs
DE3308701C2 (en) * 1983-03-11 1986-09-18 Fa. Otto Ehinger, 7900 Ulm Process for the production of jewelry and body goods for the gold and silver goods industry

Also Published As

Publication number Publication date
CA1017278A (en) 1977-09-13
NL7305462A (en) 1973-10-23
FR2180746A1 (en) 1973-11-30
FR2180746B1 (en) 1977-02-04
JPS5213501B2 (en) 1977-04-14
JPS4921337A (en) 1974-02-25
DE2319088A1 (en) 1973-11-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee