GB821497A - Improvements in or relating to methods of producing lacquer films on luminescent screens - Google Patents

Improvements in or relating to methods of producing lacquer films on luminescent screens

Info

Publication number
GB821497A
GB821497A GB1814758A GB1814758A GB821497A GB 821497 A GB821497 A GB 821497A GB 1814758 A GB1814758 A GB 1814758A GB 1814758 A GB1814758 A GB 1814758A GB 821497 A GB821497 A GB 821497A
Authority
GB
United Kingdom
Prior art keywords
bed liquid
walls
lacquer
luminescent screens
relating
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
GB1814758A
Inventor
Derrick Ernest Blaxill
Frank Ingrams
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1814758A priority Critical patent/GB821497A/en
Publication of GB821497A publication Critical patent/GB821497A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

821,497. Luminescent screens for cathoderay tubes. STANDARD TELEPHONES & CABLES Ltd. June 6, 1958, No. 18147 /58. Drawings to Specfication. Class 39(1). In a method of forming a lacquer layer on the phosphor screen of a cathode-ray tube prior to forming a metallic layer, by applying a lacquer solution to a bed liquid from which the phosphor is settled, or to a bed liquid introduced for the purpose, the bed liquid is introduced in such manner as not to wet the walls of the tube above the level of the bed liquid in order to prevent the formation of a secondary film of lacquer on the walls of the bulb. The walls of the tube are first dried by washing with acetone and flushing with clean dry compressed air. The bed liquid is introduced through suitably shaped delivery tubes.
GB1814758A 1958-06-06 1958-06-06 Improvements in or relating to methods of producing lacquer films on luminescent screens Expired GB821497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1814758A GB821497A (en) 1958-06-06 1958-06-06 Improvements in or relating to methods of producing lacquer films on luminescent screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1814758A GB821497A (en) 1958-06-06 1958-06-06 Improvements in or relating to methods of producing lacquer films on luminescent screens

Publications (1)

Publication Number Publication Date
GB821497A true GB821497A (en) 1959-10-07

Family

ID=10107451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1814758A Expired GB821497A (en) 1958-06-06 1958-06-06 Improvements in or relating to methods of producing lacquer films on luminescent screens

Country Status (1)

Country Link
GB (1) GB821497A (en)

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