Multi-electron source, image-forming device using multi-electron source, and methods for preparing them
AssigneeCanon Kabushiki Kaisha
InventorsIchiro Nomura, Yoshikazu Banno, Tetsuya Kaneko, Toshihiko Takeda, Kumi Iwai
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Abstract
A multi-electron source has a plurality of electron emitting portions arranged on a substrate. Each electron emitting portion comprises a conductive film containing a crack with an average width of 0.05 .mu.m to 1 .mu.m. The electron emitting portions are prepared by subjecting conductive films, preferably of fine particles, to a pulse voltage application treatment.
Claims10
A method for preparing a multi-electron source which comprises subjecting conductive films arranged between electrodes to a conduction treatment to form a plurality of electron emitting portions at a time, said conduction treatment being carried out by applying a pulse voltage between said electrodes.
Dependencies are inferred from the claim text.