JPS5745429A - Method for measuring recovery rate of sagging of explosionproof type cathode ray tube - Google Patents

Method for measuring recovery rate of sagging of explosionproof type cathode ray tube

Info

Publication number
JPS5745429A
JPS5745429A JP12152080A JP12152080A JPS5745429A JP S5745429 A JPS5745429 A JP S5745429A JP 12152080 A JP12152080 A JP 12152080A JP 12152080 A JP12152080 A JP 12152080A JP S5745429 A JPS5745429 A JP S5745429A
Authority
JP
Japan
Prior art keywords
sagging
recovery rate
measuring
cathode ray
ray tube
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
JP12152080A
Other languages
Japanese (ja)
Inventor
Keiichi Ochiai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12152080A priority Critical patent/JPS5745429A/en
Publication of JPS5745429A publication Critical patent/JPS5745429A/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
    • H01J9/42—Measurement or testing during manufacture

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To measure the recovery rate of sagging nondestructively, accurately and quickly by determining the displacement rate of a face-top position. CONSTITUTION:Prior to explosionproof treatment, a cathode ray tube 1 with its panel 2 directed downward is placed on a measuring device and is supported by Z point supporting means 14. The alignment points 3a at 3 points of the tube 1 are pressed to the measuring contactors 8a of dial gages 8 and the cathode ray tube bulb is located in such a way that the center of the face comes to the position at the leading end of the measuring contactor 11a of a dial gauge for measuring the recovery rate of sagging. The pointers of 3 units of the dial gages 8 for locating and the dial gage 11 for measuring the recovery rate of sagging are all beforehand set at ''0''. Next, prescribed explosionproof treatment is applied, after which again the tube is placed on the means 14, and the value of the dial gage 11 is read. This value is the recovery rate of sagging at the face top of the cathode ray tube bulb after the explosionproof treatment.
JP12152080A 1980-09-02 1980-09-02 Method for measuring recovery rate of sagging of explosionproof type cathode ray tube Pending JPS5745429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12152080A JPS5745429A (en) 1980-09-02 1980-09-02 Method for measuring recovery rate of sagging of explosionproof type cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12152080A JPS5745429A (en) 1980-09-02 1980-09-02 Method for measuring recovery rate of sagging of explosionproof type cathode ray tube

Publications (1)

Publication Number Publication Date
JPS5745429A true JPS5745429A (en) 1982-03-15

Family

ID=14813248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12152080A Pending JPS5745429A (en) 1980-09-02 1980-09-02 Method for measuring recovery rate of sagging of explosionproof type cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5745429A (en)

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