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US 10,705,461 B2Granted
Image forming device and method
AssigneeHewlett-Packard Development Company, L.P.
InventorYuichiro Tomishima
Life of this patent
Estimating the term…
Abstract
An apparatus includes an image former and an induction heating fusing device. The image former forms an image. The induction heating fusing device fuses the image formed by the image former onto paper. Whether the induction heating fusing device has an error is determined by limiting a current applied to a resonance circuit included in the induction heating fusing device to less than a certain level.
Claims20
An image forming apparatus, comprising:
- an induction heating fusing device to fuse an image onto a printing paper and including:
- a resonance circuit including an inductor to be inductively heated by a current to generate fusing heat;
- a driver circuit to apply the current to the resonance circuit;
- and
- a controller to drive the driver circuit in an A-mode in which a fusing operation is performed, and to determine in a B-mode whether the induction heating fusing device has an error in which a magnitude of the current applied to the resonance circuit by the driver circuit is less than a magnitude of a current applied to the resonance circuit in the A-mode.
2 more elements
An induction heating fusing device to be provided in an image forming apparatus, the device comprising:
- a resonance circuit including an inductor to be inductively heated by a current to generate fusing heat;
- a driver circuit to apply the current to the resonance circuit;
- and
- a controller to determine in a B-mode whether the device has an error in which a magnitude of the current applied to the resonance circuit by the driver circuit is less than a magnitude of a current to be applied in an A-mode to the resonance circuit in which a fusing operation is performed when determined in the B-mode that the device does not have an error.
1 more element
Dependencies are inferred from the claim text.