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Patent Searching and Data


Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2004213983
Kind Code:
A
Abstract:

To prevent that, when a spacer is charged, the electrons flying in the vicinity of the spacer is attracted to the spacer and thereby, the display image in the vicinity of the spacer is distorted.

An electron orbit correction electrode 29 is provided in the vicinity of an electron emitting element near the spacer 28, and an electric field for correcting the electron orbit in the direction going far away from the spacer 29 is formed in the vicinity of the electron emitting part. Thereby, the orbit of the electrons attracted to the spacer side by the charge of the spacer 28 is corrected, and deviation of beams by the charge of the spacer is prevented, and the distortion of the display image is prevented.


Inventors:
FUSHIMI MASAHIRO
Application Number:
JP2002380951A
Publication Date:
July 29, 2004
Filing Date:
December 27, 2002
Export Citation:
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Assignee:
CANON KK
International Classes:
H01J1/30; H01J1/62; H01J29/87; H01J29/02; H01J29/04; H01J29/46; H01J29/86; H01J31/12; H01J63/04; (IPC1-7): H01J31/12; H01J29/87
Attorney, Agent or Firm:
Jyohei Yamashita
Hiroshi Shimura