US Patent No: 6,246,178
Number of patents in Portfolio can not be more than 2000
Electron source and image forming apparatus using the electron source
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Jun 12, 2001
Issued date -
Sep 3, 1999
filing date -
09/389,453
serial no -
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Abstract
An electron source includes a plurality of electron emitting devices arranged in a matrix, and an image forming apparatus uses the electron source. Each of the row-direction wirings of the electron source is selected sequentially and a scan signal is applied thereto, and in synchronization of the scan signal, a modulation signal corresponding to an image signal is applied to the column-direction wiring. The row- and column-direction wirings of the electron source are connected by a connection cable having an impedance substantially equal to a characteristic impedance of a driving area of the electron source, thereby preventing signal ringing in the inputted scan signals and modulation signals. In place of the connection cable, a damping resistance having a resistance value substantially equal to the characteristic impedance may be connected in serial to each of the column- or row-direction wirings, to prevent the signal ringing.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,904,895 Electron emission device | 212 | 1988 | |
| 5,066,883 Electron-emitting device with electron-emitting region insulated from electrodes | 271 | 1988 | |
| 5,650,795 Electron source and manufacture method of same, and image forming device and manufacture method of same | 10 | 1993 | |
| 5,593,335 Method of manufacturing an electron source | 33 | 1994 | |
| 5,627,436 Multi-electron beam source with a cut off circuit and image device using the same | 11 | 1995 | |
| 5,998,924 Image/forming apparatus including an organic substance at low pressure | 12 | 1997 | |
| 6,005,540 Image-forming apparatus and method of driving the same | 25 | 1997 | |