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US 7,002,112 B2Granted
Heating apparatus for increasing temperature in short period of time with minimum overshoot
AssigneeRicoh Company, Ltd.
InventorsKazuhito Kishi, Eriko Konno
Life of this patent
Estimating the term…
Abstract
A heating apparatus includes a heating roller that is heated by heating units, a main power supply that supplies power from an external power supply to the main heating unitl, and an auxiliary power supply that supplies power to the auxiliary heating unit. The auxiliary power supply further includes a mass capacitor of multiple capacitor cells, which are charged by the external power supply. The connection mode of the capacitor cells is changed at least at the time of electric discharge.
Claims30
A heating apparatus, comprising:
- a heating unit that generates heat by power supplied;
- at least an auxiliary power supply that can be charged as power supply means for supplying the power to said heating unit;
- and
- step-up means for stepping-up the output voltage of said auxiliary power supply.
1 more element
A heating apparatus, comprising:
- a main power supply that is capable of supplying steady power;
- a main heating unit that generates heat by the power supplied from the main power supply;
- an auxiliary power supply that can be charged;
- step-up means to step-up the output voltage of said auxiliary power supply;
- an auxiliary heating unit that generates heat by the power supplied from said step-up means;
- a heating component heated by said main heating unit and said auxiliary heating unit;
- and
- detection means for detecting a situation about said auxiliary power supply, and controlling the output voltage of said step-up means based on a determination by said detection means.
5 more elements
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply, and
- step-up means for stepping up the power from the auxiliary power supply and supplying stepped-up power to the second heating unit.
1 more element
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply, and
- step-up means for stepping-up the power from the auxiliary power supply and supplying stepped-up power to the second heating unit,
- wherein a magnification of a step-up of the step-up means is constant.
2 more elements
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source,
- a second heating unit to which the power is supplied from the auxiliary power supply, and p1 step-up means for stepping up the power from the auxiliary power supply and supplying stepped-up power to the second heating unit,
- wherein an output voltage of the step-up is constant.
1 more element
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply;
- step-up means for stepping-up the power from the auxiliary power supply and supplying stepped-up power to the second heating unit;
- and
- control means for lowering an input voltage of the step-up means to be a predetermined value while raising a magnification of a step-up of the step-up means.
3 more elements
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply;
- temperature detection means for detecting a temperature of the heating apparatus;
- and
- step-up means for stepping-up an input voltage from the auxiliary power supply to be a given voltage at a predetermined timing based on a detection result of the temperature detection means and for supplying a stepped-up voltage to the second heating unit.
3 more elements
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply,
- temperature detection means for detecting a temperature of the heating apparatus;
- step-up means for stepping-up a voltage from the auxiliary power supply and for supplying a stepped-up voltage to the second heating unit;
- and
- control means for changing a step-up setting based on a detection result of the temperature detection means and for changing an output voltage of the step-up means.
4 more elements
A heating apparatus, comprising:
- a first heating unit to which power is supplied from a commercial power source;
- an auxiliary power supply for accumulating the power from the commercial power source;
- a second heating unit to which the power is supplied from the auxiliary power supply,
- temperature detection means for detecting a temperature of the heating apparatus;
- residual power detection means for detecting residual power of the auxiliary power supply;
- step-up means for stepping-up a voltage from the auxiliary power supply and for supplying a stepped-up voltage to the second heating unit;
- and
- control means for controlling an output voltage of the step-up means based on both detection results of the temperature detection means and the residual power detection means.
5 more elements
Dependencies are inferred from the claim text.