Image heating apparatus

Patent metadata

Field	Value
Publication number	US-9075360-B2
Application number	US-201314013440-A
Country	US
Kind code	B2
Filing date	Aug 29, 2013
Priority date	Sep 6, 2012
Publication date	Jul 7, 2015
Grant date	Jul 7, 2015

Abstract

An image heating apparatus includes an image heating roller, an excitation coil provided outside of the roller for causing electromagnetic induction heat generation in the roller, a magnetic core, provided opposed to the roller with the excitation coil therebetween, for directing a magnetic flux produced by the excitation coil to the roller, a retracting mechanism for retracting the magnetic core from the excitation coil, coil holder for holding a side of the excitation coil adjacent to the roller, and first and second pressing members for pressing the excitation coil against the holder in each of longitudinally opposite portions that are outside beyond the magnetic core.

First claim

What is claimed is:

1. An image heating apparatus comprising:
a rotatable heating member configured and positioned to heat a toner image on a sheet;
an excitation coil provided outside of said rotatable heating member and configured and positioned to cause electromagnetic induction heat generation in said rotatable heating member;
a magnetic core provided opposed to said rotatable heating member with said excitation coil between said magnetic core and said rotatable heating me…

Assignees

• Canon Kk

Inventors

• Kikkawa Naoya

Classifications

• G03G2215/2035

  Physics · mapped topic

• G03G15/2053 Primary

  Physics · mapped topic