GB740454A - Improvements in or relating to fluorescent screens - Google Patents

Improvements in or relating to fluorescent screens

Info

Publication number
GB740454A
GB740454A GB2552252A GB2552252A GB740454A GB 740454 A GB740454 A GB 740454A GB 2552252 A GB2552252 A GB 2552252A GB 2552252 A GB2552252 A GB 2552252A GB 740454 A GB740454 A GB 740454A
Authority
GB
United Kingdom
Prior art keywords
per litre
grams
relating
sticking potential
fluorescent screens
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
GB2552252A
Inventor
Alexander Bruce Mcfarlane
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2552252A priority Critical patent/GB740454A/en
Publication of GB740454A publication Critical patent/GB740454A/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)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

740,454. Luminescent screens. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 24, 1953 [Oct. 11, 1952], No. 25522/52. Class 39 (1). Phosphor particles are settled from an aqueous suspension containing solely between 5.75 and 12 grams of potassium silicate solids per litre; the sticking potential is raised and ion burn is also reduced. A detailed example describes the preparation of a suitable solution containing 10 grams per litre of tap-water of specified characteristics, and its application to settle a zinc and cadmium sulphide phosphor, activated with copper, resulting in a raising of the sticking potential from 13 kv. to 21 kv.
GB2552252A 1952-10-11 1952-10-11 Improvements in or relating to fluorescent screens Expired GB740454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2552252A GB740454A (en) 1952-10-11 1952-10-11 Improvements in or relating to fluorescent screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2552252A GB740454A (en) 1952-10-11 1952-10-11 Improvements in or relating to fluorescent screens

Publications (1)

Publication Number Publication Date
GB740454A true GB740454A (en) 1955-11-16

Family

ID=10229049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2552252A Expired GB740454A (en) 1952-10-11 1952-10-11 Improvements in or relating to fluorescent screens

Country Status (1)

Country Link
GB (1) GB740454A (en)

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