ES412252A1 - Method of electrophotographically manufacturing a television screen using hygroscopic material - Google Patents

Method of electrophotographically manufacturing a television screen using hygroscopic material

Info

Publication number
ES412252A1
ES412252A1 ES412252A ES412252A ES412252A1 ES 412252 A1 ES412252 A1 ES 412252A1 ES 412252 A ES412252 A ES 412252A ES 412252 A ES412252 A ES 412252A ES 412252 A1 ES412252 A1 ES 412252A1
Authority
ES
Spain
Prior art keywords
phosphor
hygroscopic material
provision
patterns
television screen
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
ES412252A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES412252A1 publication Critical patent/ES412252A1/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G8/00—Layers covering the final reproduction, e.g. for protecting, for writing thereon
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers

Landscapes

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

Abstract

A method of electrophotographically manufacturing a display screen of a colour television display tube. For enhancing the contrast, a light-absorbing layer is provided between the phosphor patterns. In order to prevent pollution of the previously provided phosphor patterns with the phosphor of phosphor patterns which are provided afterwards, the phosphor particles are previously provided with a layer of a hygroscopic material. The hygroscopic material is wetted and hence made conductive between the provision of two phosphor patterns. The hygroscopic material is dried and hence made non-conductive between the provision of the last phosphor pattern and the provision of the light-absorbing layer.
ES412252A 1972-03-04 1973-03-02 Method of electrophotographically manufacturing a television screen using hygroscopic material Expired ES412252A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7202907A NL7202907A (en) 1972-03-04 1972-03-04

Publications (1)

Publication Number Publication Date
ES412252A1 true ES412252A1 (en) 1976-01-01

Family

ID=19815513

Family Applications (1)

Application Number Title Priority Date Filing Date
ES412252A Expired ES412252A1 (en) 1972-03-04 1973-03-02 Method of electrophotographically manufacturing a television screen using hygroscopic material

Country Status (11)

Country Link
US (1) US3856518A (en)
JP (1) JPS5138216B2 (en)
AR (1) AR193568A1 (en)
AU (1) AU5268873A (en)
BE (1) BE796240A (en)
CA (1) CA982388A (en)
ES (1) ES412252A1 (en)
FR (1) FR2174936B1 (en)
GB (1) GB1358147A (en)
IT (1) IT981034B (en)
NL (1) NL7202907A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7500288A (en) * 1975-01-10 1976-07-13 Philips Nv METHOD FOR THE ELECTROPHOTOGRAPHIC MANUFACTURE OF A DISPLAY OF A COLOR TELEVISION IMAGE TUBE.
JPS5451323U (en) * 1977-09-19 1979-04-09
JPS5934106Y2 (en) * 1978-03-08 1984-09-21 東芝ライテック株式会社 winding device
JPS54155419A (en) * 1978-05-27 1979-12-07 Anzen Dengu Kk Temperature protector for coil
DE2942109A1 (en) * 1979-10-18 1981-04-30 Philips Patentverwaltung Gmbh, 2000 Hamburg METHOD FOR PRODUCING MOLDED BODIES AND LAYERS FROM INORGANIC SUBSTANCES
NL8102224A (en) * 1981-05-07 1982-12-01 Philips Nv METHOD FOR MAKING AN IMAGE FOR A COLOR IMAGE TUBE BY ELECTROPHOTOGRAPHIC ROAD
JPS58196816U (en) * 1982-06-25 1983-12-27 セイコーエプソン株式会社 transformer
JPH0787077B2 (en) * 1988-04-13 1995-09-20 三菱電機株式会社 In-line type shadow mask type color cathode ray tube exposure device
US4921767A (en) * 1988-12-21 1990-05-01 Rca Licensing Corp. Method of electrophotographically manufacturing a luminescent screen assembly for a cathode-ray-tube
US4990416A (en) * 1989-06-19 1991-02-05 Coloray Display Corporation Deposition of cathodoluminescent materials by reversal toning

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365292A (en) * 1968-01-23 Rauland Corp Method of establishing a light absorbing design on a screen structure of an image reproducer
US3139340A (en) * 1962-01-17 1964-06-30 American Optical Corp Cathode ray tube face plates and method of making the same
US3475169A (en) * 1965-08-20 1969-10-28 Zenith Radio Corp Process of electrostatically screening color cathode-ray tubes
US3489556A (en) * 1966-03-16 1970-01-13 Zenith Radio Corp Process fo electrostatically screening color cathode-ray tubes
US3489557A (en) * 1966-03-16 1970-01-13 Zenith Radio Corp Process of electrostatically screening a color cathode-ray tube
US3615462A (en) * 1968-11-06 1971-10-26 Zenith Radio Corp Processing black-surround screens
US3615459A (en) * 1968-11-06 1971-10-26 Zenith Radio Corp Method of screening a color image reproducer
US3632339A (en) * 1969-04-28 1972-01-04 Zenith Radio Corp Method of screening a color cathode-ray tube
JPS4814499B1 (en) * 1969-07-04 1973-05-08

Also Published As

Publication number Publication date
AR193568A1 (en) 1973-04-30
DE2308178A1 (en) 1973-09-13
FR2174936A1 (en) 1973-10-19
JPS5138216B2 (en) 1976-10-20
DE2308178B2 (en) 1976-11-11
NL7202907A (en) 1973-09-07
CA982388A (en) 1976-01-27
FR2174936B1 (en) 1977-09-02
GB1358147A (en) 1974-06-26
US3856518A (en) 1974-12-24
AU5268873A (en) 1974-08-29
BE796240A (en) 1973-09-03
IT981034B (en) 1974-10-10
JPS48102973A (en) 1973-12-24

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