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JPS6443952A - Electron gun for electronic tube - Google Patents

Electron gun for electronic tube

Info

Publication number
JPS6443952A
JPS6443952A JP19970387A JP19970387A JPS6443952A JP S6443952 A JPS6443952 A JP S6443952A JP 19970387 A JP19970387 A JP 19970387A JP 19970387 A JP19970387 A JP 19970387A JP S6443952 A JPS6443952 A JP S6443952A
Authority
JP
Japan
Prior art keywords
grid
main component
checked
cathode
alloy making
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
JP19970387A
Other languages
Japanese (ja)
Inventor
Hisashi Nose
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 JP19970387A priority Critical patent/JPS6443952A/en
Publication of JPS6443952A publication Critical patent/JPS6443952A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To make grid emission checkable for hours by coating Ti, Zr or an alloy making these a main component on a surface at the side being opposed to the cathode of a grid electrode and Au, Ag or an alloy making these as a main component on a surface at the opposite side, respectively, and installing a blackening film in addition. CONSTITUTION:A layer 16 consisting of Ti, Zr or an alloy making these as a main component is installed on a surface at the side to be opposed to the cathode 10 of grid electrodes 14, 18, and likewise a layer 15 consisting of Au, Ag or an alloy making these as a main component is installed on a surface at the opposite side, while a blackening film 17 is installed in addition. With this constitution, most of Ba being evaporated out of the cathode are sprung out by Ti or Zr, and the Ba, sticking to the vicinity of a grid electrode hole, fully unremoved by Ti or Zr has been absorbed in the film of Au or Ag, whereby grid emission is thus checked for hours and, what is more, a temperature rise in the electrode is checked by the blackening film, thus the grid emission is checked.
JP19970387A 1987-08-12 1987-08-12 Electron gun for electronic tube Pending JPS6443952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19970387A JPS6443952A (en) 1987-08-12 1987-08-12 Electron gun for electronic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19970387A JPS6443952A (en) 1987-08-12 1987-08-12 Electron gun for electronic tube

Publications (1)

Publication Number Publication Date
JPS6443952A true JPS6443952A (en) 1989-02-16

Family

ID=16412208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19970387A Pending JPS6443952A (en) 1987-08-12 1987-08-12 Electron gun for electronic tube

Country Status (1)

Country Link
JP (1) JPS6443952A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6989630B2 (en) 2002-08-13 2006-01-24 Kabushiki Kaisha Toshiba Electrode for election gun, method of manufacturing electrode for electron gun, and electron gun assembly
JP2012028132A (en) * 2010-07-22 2012-02-09 Hamamatsu Photonics Kk X-ray tube
JP2012028133A (en) * 2010-07-22 2012-02-09 Hamamatsu Photonics Kk X-ray tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6989630B2 (en) 2002-08-13 2006-01-24 Kabushiki Kaisha Toshiba Electrode for election gun, method of manufacturing electrode for electron gun, and electron gun assembly
JP2012028132A (en) * 2010-07-22 2012-02-09 Hamamatsu Photonics Kk X-ray tube
JP2012028133A (en) * 2010-07-22 2012-02-09 Hamamatsu Photonics Kk X-ray tube

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