U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Inductive thermal fixing apparatus having magnetic flux blocking plate with specific thickness

Patent 6687481 Issued on February 3, 2004. Estimated Expiration Date: Icon_subject May 28, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Fixing member fixing apparatus and electrophotographic apparatus using them
Patent #: 6055403
Issued on: 04/25/2000
Inventor: Watanabe

Image recording apparatus with reduced thermal energy requirements
Patent #: 6175713
Issued on: 01/16/2001
Inventor: Uehara, et al.

Image heating apparatus
Patent #: 6198901
Issued on: 03/06/2001
Inventor: Watanabe

Image heating apparatus
Patent #: 6377775
Issued on: 04/23/2002
Inventor: Nakayama, et al.

Fixing roller and fixing apparatus
Patent #: 6400924
Issued on: 06/04/2002
Inventor: Watanabe

Fixing device for fixing a developer image on a recording medium by induction-heating a heat roller
Patent #: 6405014
Issued on: 06/11/2002
Inventor: Takano, et al.

Test socket for an electronic circuit device having improved contact pins and manufacturing method thereof
Patent #: 6414500
Issued on: 07/02/2002
Inventor: Mizuta

Image heating apparatus for heating image formed on recording material
Patent #: 6453144
Issued on: 09/17/2002
Inventor: Sato

Electromagnetic induction heating device and image recording device using the same
Patent #: 6483088
Issued on: 11/19/2002
Inventor: Uehara, et al.

Image forming apparatus and fixing device for fixing a toner image to a fixing device Patent #: 6507008
Issued on: 01/14/2003
Inventor: Nakayama, et al.

Inventors

Assignee

Application

No. 155182 filed on 05/28/2002

US Classes:

399/328, By heat and pressure219/619, Roller (e.g., godet, etc.)361/816, Shielding399/45, Responsive to copy media characteristic399/69, Temperature control399/334Axial heat distribution

Examiners

Primary: Chen, Sophia S.

Attorney, Agent or Firm

Foreign Patent References

  • 9-171889 JP. 06/21/1997
  • 10-74009 JP. 03/21/1998
  • 2001-005315 JP. 01/21/2013

International Class

G03G 015/20

Foreign Application Priority Data

2001-05-28 JP

Abstract

An image fixing apparatus has a magnetic field generating unit for generating a magnetic flux; a heating member generating heat by induction heating by the magnetic flux generated by the magnetic field generating unit; and a blocking plate, disposed for movement between the magnetic field generating unit and the heating member, for blocking the magnetic flux from the magnetic field generating means, wherein the blocking plate comprises an electroconductive member having a thickness of 0.1-2 mm.

PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$16.95more info
 
Sign InRegister
Username  
Password   
forgot password?