JPS57172631A - Application of phosphor - Google Patents

Application of phosphor

Info

Publication number
JPS57172631A
JPS57172631A JP5815381A JP5815381A JPS57172631A JP S57172631 A JPS57172631 A JP S57172631A JP 5815381 A JP5815381 A JP 5815381A JP 5815381 A JP5815381 A JP 5815381A JP S57172631 A JPS57172631 A JP S57172631A
Authority
JP
Japan
Prior art keywords
bulb
wall
phosphor
phosphor powder
powder
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.)
Pending
Application number
JP5815381A
Other languages
Japanese (ja)
Inventor
Hitoshi Yamazaki
Takao Takeda
Jiro Narita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5815381A priority Critical patent/JPS57172631A/en
Publication of JPS57172631A publication Critical patent/JPS57172631A/en
Pending 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
    • H01J9/225—Applying luminescent coatings in continuous layers by electrostatic or electrophoretic processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE:To make the inner wall of a tubular bulb to be homogeneously coated with a phosphor without any necessity of heating the bulb by wetting the inner wall of the bulb with an aqueous boric-acid solution, and spraying a phosphor powder over the inner wall of the bulb. CONSTITUTION:The inner wall of a fluorescent-lamp glass bulb 1, after being washed, is wetted by pouring 3% aqueous boric-acid solution, and is dried by blowing hot air into the bulb 1. Next, the bulb 1 is supported with a bulb supporter 2, which is made of a conductive rubber and is earthed, so that the bulb 1 is rotatable. Then, a powder injection nozzle 3 is inserted into the bulb 1 while the bulb 1 is rotated, and a charged phosphor powder 4 is injected while moving the nozzle 3 so as to make the inner wall of the bulb 1 to be coated with the phosphor powder 4. Since the electric resistance of the glass surface is notably decreased due to boric-acid adsorbed in the inner wall of the bulb 1, the charged phosphor powder 4 is easily applied to the glass surface, and a homogeneous phosphor layer of no variations can be formed.
JP5815381A 1981-04-17 1981-04-17 Application of phosphor Pending JPS57172631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5815381A JPS57172631A (en) 1981-04-17 1981-04-17 Application of phosphor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5815381A JPS57172631A (en) 1981-04-17 1981-04-17 Application of phosphor

Publications (1)

Publication Number Publication Date
JPS57172631A true JPS57172631A (en) 1982-10-23

Family

ID=13076040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5815381A Pending JPS57172631A (en) 1981-04-17 1981-04-17 Application of phosphor

Country Status (1)

Country Link
JP (1) JPS57172631A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999003791A1 (en) * 1997-07-16 1999-01-28 Nippon Electric Glass Co., Ltd. Glass article having surface coating of boric acid and method for producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999003791A1 (en) * 1997-07-16 1999-01-28 Nippon Electric Glass Co., Ltd. Glass article having surface coating of boric acid and method for producing the same
US6280849B1 (en) 1997-07-16 2001-08-28 Nippon Electric Glass Co. Ltd. Glass article having surface coating of boric acid and method for producing the same

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