Heating device, fuser device, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorMasami Okamoto
Life of this patent
Estimating the term…
Abstract
A heating device includes a heating unit, a main power supply device configured to supply an electric power to the heating unit from an external power supply, an auxiliary power supply device configured to be chargeable by use of the external power supply, and a charger configured to charge the auxiliary power supply device during formation of an image while neither the main power supply device nor the auxiliary power supply device is supplying an electric power to the heating unit, such that a maximum limit of a charge amount of the auxiliary power supply device is set to a predetermined amount smaller than a full-charge amount of the auxiliary power supply device.
Claims6
A heating device, comprising:
- a heating unit;
- a main power supply device configured to supply an electric power to said heating unit from an external power supply;
- an auxiliary power supply device configured to be chargeable by use of the external power supply;
- and
- a charger configured to charge said auxiliary power supply device during formation of an image while neither said main power supply device nor said auxiliary power supply device is supplying an electric power to said heating unit, such that a maximum limit of a charge amount of said auxiliary power supply device is set to a predetermined amount smaller than a full-charge amount of said auxiliary power supply device.
A fuser device for use in an image forming apparatus, comprising:
- a fusing roller;
- a heating unit embedded in said fusing roller;
- a main power supply device configured to supply an electric power to said heating unit from an external power supply;
- an auxiliary power supply device configured to be chargeable by use of the external power supply;
- and
- a charger configured to charge said auxiliary power supply device during formation of an image while neither said main power supply device nor said auxiliary power supply device is supplying an electric power to said heating unit, such that a maximum limit of a charge amount of said auxiliary power supply device is set to a predetermined amount smaller than a full-charge amount of said auxiliary power supply device.
An image forming apparatus, comprising:
- a unit configured to form a toner image by use of an electrophotographic system;
- and
- a fuser device configured to heat and fuse the toner image with a recording medium, wherein said fuser device includes:
- a fusing roller;
- a heating unit embedded in said fusing roller;
- a main power supply device configured to supply an electric power to said heating unit from an external power supply;
- an auxiliary power supply device configured to be chargeable by use of the external power supply;
- and
- a charger configured to charge said auxiliary power supply device during formation of an image while neither said main power supply device nor said auxiliary power supply device is supplying an electric power to said heating unit, such that a maximum limit of a charge amount of said auxiliary power supply device is set to a predetermined amount smaller than a full-charge amount of said auxiliary power supply device.
Dependencies are inferred from the claim text.