GB955446A - Methods of applying emitter coatings to cathodes of electronic tubes - Google Patents

Methods of applying emitter coatings to cathodes of electronic tubes

Info

Publication number
GB955446A
GB955446A GB18805/62A GB1880562A GB955446A GB 955446 A GB955446 A GB 955446A GB 18805/62 A GB18805/62 A GB 18805/62A GB 1880562 A GB1880562 A GB 1880562A GB 955446 A GB955446 A GB 955446A
Authority
GB
United Kingdom
Prior art keywords
foil
film
solution
cathodes
width
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
GB18805/62A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB955446A publication Critical patent/GB955446A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

<PICT:0955446/C3/1> In a method of making a cathode, an electron-emissive film 2 is formed on a flexible carrier foil 3 and is applied, together with the foil, to a cathode core. The carrier foil may be produced from a solution comprising 24 gms. of dinitro-cellulose, e.g. soluble gun cotton, 200 ml. of butoxyl, 400 ml. of butyl acetate, 200 ml. of butyl glycol, and 200 ml. of polyacrylic acid ester 40% dissolved in xylene. The emissive film may be produced from a suspension of alkaline earth carbonates, of grain size less than 6m , with a binder content of 2 to 2.5% by weight of a dinitrocellulose, in the above solution. The foil 3 or film 2 are formed successively by feeding the appropriate solution through a capillary nozzle 4 in the form of an elongated slit having a width of 0.3 mm. to form a foil 3, 8 to 10m thick, and a width of 0.1 to 0.13 mm. to form film 2. The foil 3 may be detached from the base, by immersion in water, prior to formation of film 2, but is preferably detached afterwards and after drying in air at 100 DEG C.
GB18805/62A 1961-05-16 1962-05-16 Methods of applying emitter coatings to cathodes of electronic tubes Expired GB955446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES73979A DE1131813B (en) 1961-05-16 1961-05-16 Process for applying thin emission-capable layers on cathode carriers of electrical discharge vessels

Publications (1)

Publication Number Publication Date
GB955446A true GB955446A (en) 1964-04-15

Family

ID=7504326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18805/62A Expired GB955446A (en) 1961-05-16 1962-05-16 Methods of applying emitter coatings to cathodes of electronic tubes

Country Status (4)

Country Link
US (1) US3306796A (en)
DE (1) DE1131813B (en)
GB (1) GB955446A (en)
NL (1) NL278466A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140315094A1 (en) * 2011-07-29 2014-10-23 Uacj Foil Corporation Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5743990A (en) * 1996-11-25 1998-04-28 Hughes Electronics Thin laminate removal process tooling and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1514283A (en) * 1923-04-14 1924-11-04 Eastman Kodak Co Film-making process
US2673387A (en) * 1951-05-18 1954-03-30 Gen Electric Electron emission coating mixtures
US2729583A (en) * 1951-09-14 1956-01-03 Philco Corp Method of fabricating electrical apparatus
US2986671A (en) * 1954-08-31 1961-05-30 Sylvania Electric Prod Application of strip coating to cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140315094A1 (en) * 2011-07-29 2014-10-23 Uacj Foil Corporation Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material
US9911546B2 (en) * 2011-07-29 2018-03-06 Uacj Corporation Current collector, electrode structure, nonaqueous electrolyte battery, electrical storage device, and nitrocellulose resin material

Also Published As

Publication number Publication date
US3306796A (en) 1967-02-28
DE1131813B (en) 1962-06-20
NL278466A (en)

Similar Documents

Publication Publication Date Title
GB955446A (en) Methods of applying emitter coatings to cathodes of electronic tubes
GB1336164A (en) Hydrophilic film-forming colloid composition
JPS5596531A (en) Directly heated cathode for electron tube
JPS51124362A (en) Field emission type electron gun
JPS5573776A (en) Low-speed electron beam-exciting fluorescent substance and fluorescent display device provided with the same
ES453407A1 (en) Method of manufacturing a cathode-ray tube
GB2025124B (en) Electroluminescent cathode ray storage tube
GB809668A (en) Improved electron discharge device
JPS5550558A (en) Operating method of scanning conversion type storage tube
GB918089A (en) An improved cathode for electron tubes
GB943761A (en) Improvements in electron emissive tapes and method of making
JPS5442970A (en) Manufactue of thermionic cathode for electron tube
JPS5382683A (en) Production of fluorescent substance
GB785171A (en) Process of coating cathode ray tube screens
ES445244A1 (en) Fieldemission cathode
JPS5224069A (en) Cathode-ray tube electron gun use cathode
AU275766B2 (en) Improvements in or relating to methods of coating a filament for an indirectly - heated cathode with a black - radiating insudirectly - heated cathode with a black - radiating insulating layer, cathodes comprising such a filament and electric dicharge tubes provided with such a cathode
JPS5251861A (en) Field radiation type electronic gun
JPS5426656A (en) Getter flash method and getter flash unit
JPS5223252A (en) Method of positioning electrodes of electron tubes
JPS51123059A (en) Cathode ray device
GB1178052A (en) A Noiseless Discharge Tube
JPS5528208A (en) Cathode ray tube
JPS5394760A (en) Manufacture of electron tube chthode
AU3352263A (en) Improvements in or relating to methods of coating a filament for an indirectly - heated cathode with a black - radiating insudirectly - heated cathode with a black - radiating insulating layer, cathodes comprising such a filament and electric dicharge tubes provided with such a cathode