JPS5319755A - Inspecting method for electron tube cathode surface - Google Patents

Inspecting method for electron tube cathode surface

Info

Publication number
JPS5319755A
JPS5319755A JP9401276A JP9401276A JPS5319755A JP S5319755 A JPS5319755 A JP S5319755A JP 9401276 A JP9401276 A JP 9401276A JP 9401276 A JP9401276 A JP 9401276A JP S5319755 A JPS5319755 A JP S5319755A
Authority
JP
Japan
Prior art keywords
electron tube
cathode surface
tube cathode
inspecting method
inspecting
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.)
Granted
Application number
JP9401276A
Other languages
Japanese (ja)
Other versions
JPS581498B2 (en
Inventor
Hiromi Kawagoe
Minoru Tsukada
Kazuo Kosekizawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9401276A priority Critical patent/JPS581498B2/en
Publication of JPS5319755A publication Critical patent/JPS5319755A/en
Publication of JPS581498B2 publication Critical patent/JPS581498B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE: The alkaline earth metals ternary oxide surface on an electron tube cathode surface and the intermediate layer product formed by reaction of this oxide and a substance metal are melted and removed successively, thereby inspecting the surface.
COPYRIGHT: (C)1978,JPO&Japio
JP9401276A 1976-08-09 1976-08-09 Electron tube cathode surface inspection method Expired JPS581498B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9401276A JPS581498B2 (en) 1976-08-09 1976-08-09 Electron tube cathode surface inspection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9401276A JPS581498B2 (en) 1976-08-09 1976-08-09 Electron tube cathode surface inspection method

Publications (2)

Publication Number Publication Date
JPS5319755A true JPS5319755A (en) 1978-02-23
JPS581498B2 JPS581498B2 (en) 1983-01-11

Family

ID=14098551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9401276A Expired JPS581498B2 (en) 1976-08-09 1976-08-09 Electron tube cathode surface inspection method

Country Status (1)

Country Link
JP (1) JPS581498B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49105091A (en) * 1973-02-06 1974-10-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49105091A (en) * 1973-02-06 1974-10-04

Also Published As

Publication number Publication date
JPS581498B2 (en) 1983-01-11

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