CA2295411A1 - Electron beam apparatus and image-forming apparatus - Google Patents
Electron beam apparatus and image-forming apparatus Download PDFInfo
- 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
- Authority
- 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
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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.
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.
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) |
-
1994
- 1994-06-22 CA CA002295411A patent/CA2295411C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2295411C (en) | 2003-02-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20140625 |