CA2295411A1 - Electron beam apparatus and image-forming apparatus - Google Patents

Electron beam apparatus and image-forming apparatus Download PDF

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Publication number
CA2295411A1
CA2295411A1 CA002295411A CA2295411A CA2295411A1 CA 2295411 A1 CA2295411 A1 CA 2295411A1 CA 002295411 A CA002295411 A CA 002295411A CA 2295411 A CA2295411 A CA 2295411A CA 2295411 A1 CA2295411 A1 CA 2295411A1
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CA
Canada
Prior art keywords
electron
image
emitting device
enclosure
electron beam
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
CA002295411A
Other languages
French (fr)
Other versions
CA2295411C (en
Inventor
Ichiro Nomura
Masato Yamanobe
Hidetoshi Suzuki
Toshihiko Takeda
Tatsuya Iwasaki
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.)
Canon Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from CA002126535A external-priority patent/CA2126535C/en
Publication of CA2295411A1 publication Critical patent/CA2295411A1/en
Application granted granted Critical
Publication of CA2295411C publication Critical patent/CA2295411C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Cold Cathode And The Manufacture (AREA)

Abstract

In an electron beam apparatus comprising an enclosure in which an electron-emitting device having an electron-emitting region between opposite electrodes is disposed, the electron-emitting device exhibits such a characteristic as that an emission current is uniquely determined with respect to a device voltage. The interior of the enclosure is maintained under an atmosphere effective to prevent structural changes of the electron-emitting device.
An image-forming apparatus comprises an enclosure in which an electron source and an image-forming member are disposed, the electron source comprising the above electron-emitting device. An emission current is stable with a very small change in the amount of electrons emitted, a sharp image is produced with high contrast, and gradation control is easily carried out.
CA002295411A 1993-12-28 1994-06-22 Electron beam apparatus and image-forming apparatus Expired - Fee Related CA2295411C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5-336708 1993-12-28
JP33670893 1993-12-28
CA002126535A CA2126535C (en) 1993-12-28 1994-06-22 Electron beam apparatus and image-forming apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002126535A Division CA2126535C (en) 1993-12-28 1994-06-22 Electron beam apparatus and image-forming apparatus

Publications (2)

Publication Number Publication Date
CA2295411A1 true CA2295411A1 (en) 1995-06-29
CA2295411C CA2295411C (en) 2003-02-04

Family

ID=25677336

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002295411A Expired - Fee Related CA2295411C (en) 1993-12-28 1994-06-22 Electron beam apparatus and image-forming apparatus

Country Status (1)

Country Link
CA (1) CA2295411C (en)

Also Published As

Publication number Publication date
CA2295411C (en) 2003-02-04

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Effective date: 20140625