Image forming apparatus with another secondary power supply

Details Image forming apparatus with another secondary power supply Image forming apparatus with another secondary power supply

G - Physics

03

G

G03G 15/20 (2006.01) G03G 15/00 (2006.01)

Patent

CA 2499436

An image forming apparatus (1) is disclosed, including: a fixing unit (5); a main power supply (6) that provides a portion of the heaters with voltage; and a secondary power supply (711, 712) that provides another portion of the heaters connected to the portion of the heaters in parallel with power provided by the main power supply. The secondary power supply is disposed below and in the neighborhood of the fixing unit. An electric double layer capacitor (711) of the secondary power supply may be disposed between a side face of a chassis of the image forming apparatus and a thermally insulting wall (713) towards the fixing unit, or at an exterior of the chassis of the image forming apparatus on the side face of the chassis. The secondary power supply thus will not be heated by the fixing unit.

L'invention concerne un appareil de formation d'images (1) comprenant: une unité de fixation (5); une alimentation principale (6) fournissant de la tension à une première partie des éléments de chauffage; et une alimentation secondaire (711, 712) fournissant à l'autre partie des éléments de chauffage connectés en parallèle à la première partie des éléments de chauffage du courant fourni par l'alimentation principale. La seconde alimentation est disposée au-dessous et à proximité de l'unité de fixation. Un condensateur électrique à double couche (711) de l'alimentation secondaire peut être disposé entre une surface latérale d'un châssis de l'appareil de formation d'images et une paroi isolante sur le plan thermique (713), en direction de l'unité de fixation ou au niveau de l'extérieur du châssis dudit appareil, sur la surface latérale du châssis. L'alimentation secondaire ne sera par conséquent pas chauffée par l'unité de fixation.

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