GB1372802A - Method of making a plurality of elements each consiting of an imperforate area having an aperture therein - Google Patents

Method of making a plurality of elements each consiting of an imperforate area having an aperture therein

Info

Publication number
GB1372802A
GB1372802A GB2309172A GB2309172A GB1372802A GB 1372802 A GB1372802 A GB 1372802A GB 2309172 A GB2309172 A GB 2309172A GB 2309172 A GB2309172 A GB 2309172A GB 1372802 A GB1372802 A GB 1372802A
Authority
GB
United Kingdom
Prior art keywords
gal
film
grid
conducting material
metal
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
GB2309172A
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 GB1372802A publication Critical patent/GB1372802A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/08—Perforated or foraminous objects, e.g. sieves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

Abstract

1372802 Depositing a metal grid R C A CORPORATION 17 May 1972 [27 May 1971] 23091/72 Heading C7B [Also in Division H1] A grid for electron guns comprises a solid frame 22 with circular areas 24 having apertures 26 and joined by bus bars 28. The grid is made by depositing a film of conducting material on an insulating substrate, removing portions of the film to form a master pattern, electro-plating metal on to the pattern then peeling off the plated metal. The conducting material may be W, Al, Cr, Ta, stannous oxide or indium sesquioxide oxide. The electro-plated metal may be Cu, Ni, Ag, Au, or Pt. The substrate may be glass and the master pattern produced by photo etching with ceric sulphate, nitric acid mixture. The film of conducting material may be cleared in H 2 O 2 + H 2 SO 4 . For Nickel, the plating solution comprises 20oz/gal Ni ions, 0.9oz/gal chloride ions, 3.4oz/gal boric acid and a brightener-stress reliever to produce pH 3.2-4.2. The temperature may be 55-60‹C. and the cement density 60 Amp/ft<SP>2</SP>. Specification 1336615 is referred to.
GB2309172A 1971-05-27 1972-05-17 Method of making a plurality of elements each consiting of an imperforate area having an aperture therein Expired GB1372802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14732471A 1971-05-27 1971-05-27

Publications (1)

Publication Number Publication Date
GB1372802A true GB1372802A (en) 1974-11-06

Family

ID=22521108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2309172A Expired GB1372802A (en) 1971-05-27 1972-05-17 Method of making a plurality of elements each consiting of an imperforate area having an aperture therein

Country Status (8)

Country Link
JP (1) JPS5226654B1 (en)
AU (1) AU471610B2 (en)
CA (1) CA947224A (en)
DE (1) DE2225826C3 (en)
FR (1) FR2139005B1 (en)
GB (1) GB1372802A (en)
IT (1) IT955496B (en)
NL (1) NL174002C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000191A (en) * 1977-06-01 1979-01-04 Bicc Ltd Fabricating copper by electrodeposition
FR2560399A1 (en) * 1984-02-24 1985-08-30 Armstrong World Ind Inc METHOD FOR MANUFACTURING A STENCIL

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649807U (en) * 1979-09-21 1981-05-02
US4762595A (en) * 1984-04-30 1988-08-09 Ppg Industries, Inc. Electroforming elements
US4549939A (en) * 1984-04-30 1985-10-29 Ppg Industries, Inc. Photoelectroforming mandrel and method of electroforming
US4773971A (en) * 1986-10-30 1988-09-27 Hewlett-Packard Company Thin film mandrel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000191A (en) * 1977-06-01 1979-01-04 Bicc Ltd Fabricating copper by electrodeposition
GB2000191B (en) * 1977-06-01 1982-01-13 Bicc Ltd Fabrication of copper
FR2560399A1 (en) * 1984-02-24 1985-08-30 Armstrong World Ind Inc METHOD FOR MANUFACTURING A STENCIL

Also Published As

Publication number Publication date
AU4250372A (en) 1973-11-22
DE2225826B2 (en) 1978-11-30
FR2139005B1 (en) 1976-08-06
AU471610B2 (en) 1976-04-29
FR2139005A1 (en) 1973-01-05
IT955496B (en) 1973-09-29
JPS5226654B1 (en) 1977-07-15
NL174002C (en) 1984-04-02
NL7207153A (en) 1972-11-29
DE2225826C3 (en) 1979-08-09
DE2225826A1 (en) 1972-12-07
NL174002B (en) 1983-11-01
CA947224A (en) 1974-05-14

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Legal Events

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