Electric lamp and discharge devices: systems – Plural power supplies
Reexamination Certificate
2006-11-14
2006-11-14
Phan, Tho (Department: 2821)
Electric lamp and discharge devices: systems
Plural power supplies
C315S169100, C315S169300, C315S169400, C313S495000, C313S306000, C313S336000, C313S351000
Reexamination Certificate
active
07135823
ABSTRACT:
An image forming apparatus comprising: a cathode; a gate; an anode; an electron emitting element arranged on the cathode; an image forming member that is arranged opposite to the electron emitting element; a deflection electrode that deflects the orbit of the electron emitted from the electron emitting element and headed toward the anode; and a driver,wherein assuming that an electric field required to start electron emission from the electron emitting element is Ee, that an electric field applied to the electron emitting element by applying voltage to the anode is Ea and that an electric field applied to the electron emitting element by applying voltage to the gate is Eg, the driver applies voltages to the cathode, the gate, and the anode in such a way that (i) Ea>Ee or (ii) Ea+Eg>Ee and Ea>Eg is satisfied.
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Suzuki Noritake
Yabu Shigeki
Phan Tho
Tran Chuc
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