JPS57162238A - Manufacture device for color braun tube - Google Patents

Manufacture device for color braun tube

Info

Publication number
JPS57162238A
JPS57162238A JP4621981A JP4621981A JPS57162238A JP S57162238 A JPS57162238 A JP S57162238A JP 4621981 A JP4621981 A JP 4621981A JP 4621981 A JP4621981 A JP 4621981A JP S57162238 A JPS57162238 A JP S57162238A
Authority
JP
Japan
Prior art keywords
magnetic substance
convergence
tube
purity
magnetic
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
JP4621981A
Other languages
Japanese (ja)
Inventor
Kazunari Hirayama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4621981A priority Critical patent/JPS57162238A/en
Publication of JPS57162238A publication Critical patent/JPS57162238A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To perform the magnetization of a magnetic substance, which is installed inside or outside the neck of a color Braun tube, irrespective of variations of the magnetic substance by magnetizing the magnetic substance to a given value by demagnetizing the magnetic substance according to convergence and purity information obtained from the picture after the magnetic substance is saturated. CONSTITUTION:A magnetic substnace is installed inside or outside the neck of an uncontrolled Braun color tube 1, which is inserted into a multipolar coil 32. The convergence and purity of the tube 1 are measured with a signal generating source 35 and detectors 38a, 38b and 39. Next, a current is fed from a magnetization power source 36 to the multipolar coil 32 according to the discharge command of an operation control device 37 so as to make the magnetic substnace to be magnetized to a point of saturation. After that, the convergence and purity of the tube 1 are measured again, and the magnetic substance is demagnetized with the coil 32 after a demagnetizing current is computed with the device 35 according to the difference between the measured values of the convergence and purity of the former and the latter measurements. Then, the magnetic substance is magnetized to a given value by repeatedly carrying out the above measurement and demagnetization. Consequently, the magnetization can be performed irrespective of any variation of the magnetic substance.
JP4621981A 1981-03-31 1981-03-31 Manufacture device for color braun tube Pending JPS57162238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4621981A JPS57162238A (en) 1981-03-31 1981-03-31 Manufacture device for color braun tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4621981A JPS57162238A (en) 1981-03-31 1981-03-31 Manufacture device for color braun tube

Publications (1)

Publication Number Publication Date
JPS57162238A true JPS57162238A (en) 1982-10-06

Family

ID=12740988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4621981A Pending JPS57162238A (en) 1981-03-31 1981-03-31 Manufacture device for color braun tube

Country Status (1)

Country Link
JP (1) JPS57162238A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028142A (en) * 1983-07-27 1985-02-13 Hitachi Ltd Manufacturing equipment for inline type color picture tube with magnetic convergence unit and for magnetic convergence unit
JPS60180045A (en) * 1984-02-24 1985-09-13 Matsushita Electronics Corp Method of manufacturing cathode ray tube
JPS6372041A (en) * 1986-09-16 1988-04-01 Matsushita Electronics Corp Manufacture of magnet built-in cathode-ray tube
EP0749146A2 (en) * 1995-06-14 1996-12-18 Sony Corporation Method of degaussing cathode ray tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028142A (en) * 1983-07-27 1985-02-13 Hitachi Ltd Manufacturing equipment for inline type color picture tube with magnetic convergence unit and for magnetic convergence unit
JPS60180045A (en) * 1984-02-24 1985-09-13 Matsushita Electronics Corp Method of manufacturing cathode ray tube
JPH0365607B2 (en) * 1984-02-24 1991-10-14
JPS6372041A (en) * 1986-09-16 1988-04-01 Matsushita Electronics Corp Manufacture of magnet built-in cathode-ray tube
EP0749146A2 (en) * 1995-06-14 1996-12-18 Sony Corporation Method of degaussing cathode ray tube
EP0749146A3 (en) * 1995-06-14 1997-03-26 Sony Corp Method of degaussing cathode ray tube
US5754007A (en) * 1995-06-14 1998-05-19 Sony Corporation Method of degaussing cathode ray tube

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