US Patent No. 10,194,491


Patent No. 10,194,491
Issue Date January 29, 2019
Title Induction Heat Generation Roller Device
Inventorship Kozo Okamoto, Takashima (JP)
Takatsugu Kitano, Otsu (JP)
Assignee TOKUDEN CO., LTD., Kyoto-Shi, Kyoto (JP)

Claim of US Patent No. 10,194,491

1. An induction heat generation roller device, comprising:a roller main body adapted to be rotatably supported;
an induction heat generator provided within the roller main body and having an induction coil for heating the roller main body inductively;
a cooling mechanism configured to introduce a coolant mist at a coolant mist introduction timing into a clearance portion between the roller main body and the induction heat generator for cooling the roller main body;
an AC voltage application part configured to apply an AC voltage to the induction coil, and vaporizes the coolant mist that has condensed; and
a DC voltage application part configured to apply a DC voltage to the induction coil at a DC voltage introduction timing that is in a timed relationship with the coolant mist introduction timing.