Elektrophotographisches Gerät

Elektrophotographisches Gerät

When a CPU switches the power supply to a fusing lamp to OFF while the exposing lamp stays ON , the CPU suspends a feedback phase control of the exposing lamp and carries out phase control of the exposing lamp based on phase control data stored in a RAM. The control is carried out for a predetermine...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MAEHARA, SHIGEHARU, SODA, KAZUNORI
Format: Patent
Sprache:ger
Schlagworte:
CINEMATOGRAPHY
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Beschreibung
Zusammenfassung:When a CPU switches the power supply to a fusing lamp to OFF while the exposing lamp stays ON , the CPU suspends a feedback phase control of the exposing lamp and carries out phase control of the exposing lamp based on phase control data stored in a RAM. The control is carried out for a predetermined period of time. The exposing lamp is hardly affected by the switching of the power state to the fusing lamp and therefore emits a constant light. The exposing lamp (3) and the fusing lamp (23) are connected in parallel to an AC power source (27). Two TRIACS (25,26) switch the two lamps under the control of driving circuits (35,36) which are controlled by the CPU (29).