GB607135A - Improvements in methods of making luminescent screens - Google Patents

Improvements in methods of making luminescent screens

Info

Publication number
GB607135A
GB607135A GB3074645A GB3074645A GB607135A GB 607135 A GB607135 A GB 607135A GB 3074645 A GB3074645 A GB 3074645A GB 3074645 A GB3074645 A GB 3074645A GB 607135 A GB607135 A GB 607135A
Authority
GB
United Kingdom
Prior art keywords
tube
zinc
phosphor
settling
suspension
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
GB3074645A
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.)
ALLAN JOHN PALMER
Original Assignee
ALLAN JOHN PALMER
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 ALLAN JOHN PALMER filed Critical ALLAN JOHN PALMER
Priority to GB3074645A priority Critical patent/GB607135A/en
Publication of GB607135A publication Critical patent/GB607135A/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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/221—Applying luminescent coatings in continuous layers
    • H01J9/223—Applying luminescent coatings in continuous layers by uniformly dispersing of liquid

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Luminescent Compositions (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

607,135. Luminescent screens. PALMER, A. J., and HAZLEHURST, A. N. Nov. 16, 1945, No. 30746. [Class 39 (i)] A luminescent screen is made by settling from a suspension of the phosphor in a medium in which potassium or sodium silicate is present in solution. In the example, zinc borate is precipitated by mixing sodium borate and zinc nitrate, filtering, drying and powdering, and it is then added to distilled water in the tube to be treated, the powder being allowed to settle and form a layer of zinc borate. The phosphor. e.g. zinc cadmium sulphide, and potassium silicate are made up into a suspension and introduced into the tube through a funnel terminating in four symmetrically placed holes which direct the liquid upwardly and outwardly. After settling for 2-3 hours, the supernatant liquid is poured or siphoned off and the screen dried. Boric acid may be introduced into the tube and allowed to dry and form a protecting layer over the luminescent screen. Specifications 502,919 and 591,506 are referred to.
GB3074645A 1945-11-16 1945-11-16 Improvements in methods of making luminescent screens Expired GB607135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3074645A GB607135A (en) 1945-11-16 1945-11-16 Improvements in methods of making luminescent screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3074645A GB607135A (en) 1945-11-16 1945-11-16 Improvements in methods of making luminescent screens

Publications (1)

Publication Number Publication Date
GB607135A true GB607135A (en) 1948-08-26

Family

ID=10312483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3074645A Expired GB607135A (en) 1945-11-16 1945-11-16 Improvements in methods of making luminescent screens

Country Status (1)

Country Link
GB (1) GB607135A (en)

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