GB795354A - Improvements in or relating to methods of forming a deposit of powdered material on a support - Google Patents

Improvements in or relating to methods of forming a deposit of powdered material on a support

Info

Publication number
GB795354A
GB795354A GB1228055A GB1228055A GB795354A GB 795354 A GB795354 A GB 795354A GB 1228055 A GB1228055 A GB 1228055A GB 1228055 A GB1228055 A GB 1228055A GB 795354 A GB795354 A GB 795354A
Authority
GB
United Kingdom
Prior art keywords
layer
phosphor
resist
binder
april
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
GB1228055A
Inventor
Ralph Desmond Nixon
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1228055A priority Critical patent/GB795354A/en
Priority to FR1149543D priority patent/FR1149543A/en
Publication of GB795354A publication Critical patent/GB795354A/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
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes

Landscapes

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

Abstract

795,354. Ornamenting. GENERAL ELECTRIC CO., Ltd. April 11, 1956 [April 28, 1955], No. 12280/55. Drawings to Specification. Class 93 [Also in Group XL(a)] Multi-colour phosphor screens in dot or strip form are produced by a method in which a deposited layer of one phosphor, e.g. blue Zn S/Ag and a binder, is covered with a photo-sensitive resist layer which is exposed through, the appropriate dot or line negative, the unexposed resist washed away and the underlying phosphor-binder layer at these unexposed parts removed by solvent or chemical action, e.g. polyethylene glycol. A further layer of phosphorbinder, .e.g. a green phopshor such as willemite, is applied to the screen and covered with a layer of resist and exposed and treated as for the first layer, and is followed by a similar step for the red phosphor, e.g. Zn Cd S/Ag or manganeseactivated zinc phosphate. The phosphor layers may have additional protective layers of nitro cellulose. The resist may be amonium bichromate and fish glue, or dichromated gum or polyvinyl alcohol. The hardened resist material may then be removed by dilute potassium hydroxide and the screen baked to disperse the nitro cellulose binder.
GB1228055A 1955-04-28 1955-04-28 Improvements in or relating to methods of forming a deposit of powdered material on a support Expired GB795354A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1228055A GB795354A (en) 1955-04-28 1955-04-28 Improvements in or relating to methods of forming a deposit of powdered material on a support
FR1149543D FR1149543A (en) 1955-04-28 1956-04-18 Method of forming a deposit of a pulverulent material on a support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1228055A GB795354A (en) 1955-04-28 1955-04-28 Improvements in or relating to methods of forming a deposit of powdered material on a support

Publications (1)

Publication Number Publication Date
GB795354A true GB795354A (en) 1958-05-21

Family

ID=10001650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228055A Expired GB795354A (en) 1955-04-28 1955-04-28 Improvements in or relating to methods of forming a deposit of powdered material on a support

Country Status (2)

Country Link
FR (1) FR1149543A (en)
GB (1) GB795354A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226246A (en) * 1960-08-06 1965-12-28 Philips Corp Method of manufacturing display screens for cathode-ray tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226246A (en) * 1960-08-06 1965-12-28 Philips Corp Method of manufacturing display screens for cathode-ray tubes

Also Published As

Publication number Publication date
FR1149543A (en) 1957-12-27

Similar Documents

Publication Publication Date Title
GB1180195A (en) Method for Producing a Mosaic Phosphor Screen
FR2401507A1 (en) PROCEDURE FOR FORMING A LAYER OF POWDER DEPOSITED ACCORDING TO A MODEL
US3226246A (en) Method of manufacturing display screens for cathode-ray tubes
JPS5399928A (en) Preparation of silver halide photosensitive material
GB1072953A (en) Method of depositing particulate layers
GB799993A (en) Method of producing phosphor patterns in cathode ray tubes
GB795354A (en) Improvements in or relating to methods of forming a deposit of powdered material on a support
US4268594A (en) Method of manufacturing a fluorescent screen
GB1438580A (en) Method of forming a self-supporting luminescent screen
GB916832A (en) Improvements in or relating to methods of manufacturing display scre ns for cathode-ray tubes
GB1113203A (en) Fabrication of image display screens
JPS53120527A (en) Forming method of positive type radiation sensitive material layer
US3380826A (en) Fabrication of image display screens
GB860872A (en) Improvements in and relating to methods for producing selective deposits on a substrate
GB326764A (en) An improved method of and means for the production of photographs in natural colours
JPS5230276A (en) Fluorescent substance for low speed electron beam
JPS5613638A (en) Formation of fluorescent screen for color cathode-ray tube
GB807770A (en) Colour television screen and method
JPS56160741A (en) Metal-back film forming method for cathode ray tube
JPS5242070A (en) Manufacturing method for cathode ray tube
GB1246234A (en) Method of manufacturing display screens for cathode ray tubes
GB804958A (en) Processing phosphor screens for cathode ray tubes
SE330662B (en)
JPS51127181A (en) Films having selective transmittance for light
GB1334446A (en) Luminescent screens