Induction heating apparatus for heating image on recording material
AssigneeCanon Kabushiki Kaisha
InventorTomoichiro Ohta
Life of this patent
Estimating the term…
Abstract
The present invention relates to an induction heating apparatus for heating an image on a recording material which has an electric conductor, a first coil, for inducing an eddy current in the electric conductor disposed over a longitudinal direction of the electric conductor, a second coil disposed so as to overlap an end portion of the first coil, a first power supply for supplying an alternating current to the first coil, a second power supply for supplying an alternating current to the second coil, a phase shifting circuit for controlling a phase of the alternating current supplied to the second coil, and control means for controlling the phase shifting circuit in conformity with a temperature of the electric conductor.
Claims14
An induction heating apparatus for heating an image on a recording material, comprising:
- an electric conductor;
- a first coil for inducing an eddy current in said electric conductor, said first coil being disposed over a longitudinal direction of said electric conductor;
- a second coil disposed so as to overlap an end portion of said first coil;
- a first power supply for supplying an alternating current to said first coil;
- a second power supply for supplying an alternating current to said second coil;
- a phase shifting circuit for controlling a phase of the alternating current supplied to said second coil;
- and
- control means for controlling said phase shifting circuit in conformity with a temperature of said electric conductor.
An induction heating apparatus for heating an image on a recording material, comprising:
- an electric conductor;
- a first coil for inducing an eddy current in said electric conductor;
- a second coil disposed so as to overlap said first coil;
- a first power supply for supplying an alternating current to said first coil;
- a second power supply for supplying an alternating current to said second coil;
- a phase shifting circuit for controlling a phase of the alternating current supplied to said second coil.
Dependencies are inferred from the claim text.