| Patent Number |
Title Of Patent |
Date Issued |
| 7483666 |
Fixing apparatus and image forming apparatus |
January 27, 2009 |
| A shield plate that has a plate portion stretching in a width direction of exciting coils is positioned so that end portions of the shield plate oppose the exciting coils. The present invention prevents elongated warm-up time and reduces a dramatic temperature drop when printing on t |
| 7391983 |
Method and apparatus for controlling image forming operation of an image forming apparatus |
June 24, 2008 |
| The present invention relates to an image forming apparatus that enables the occurrence of print defects due to a first print start time delay to be eliminated without using a temperature sensor that has a small thermal time constant. When the temperature of a fixing belt serving as an i |
| 7388595 |
Fixing device and temperature control method |
June 17, 2008 |
| As a cooling mechanism that cools the entire paper passage area of a heat-producing belt, a rotational drive method of the heat-producing belt is employed and the heat-producing belt is cooled by rotational cooling by being made to idle when paper is not being passed through. An exci |
| 7277650 |
Image fixing controller with time/temperature control |
October 2, 2007 |
| An image fixing device that is controllable with a high degree of reliability. The image fixing device is configured with a heat generator for fixing a toner image onto a recording medium that is opposed to an induction heater. Heat is generated in the heat generator through electrom |
| 6888113 |
Heating device and fuser utilizing electromagnetic induction |
May 3, 2005 |
| A heating device utilizing electromagnetic induction is provided with an induction heating unit that is opposed to a heating member and causes the heating member to heat through electromagnetic induction. The induction heating unit has an exciting coil for generating a magnetic field and |
| 6810230 |
Electromagnetic induction image heating device and image forming apparatus |
October 26, 2004 |
| An excitation coil is arranged so as to be opposed to a rotatable heat generating roller of a conductive material, and on a rear side of the excitation coil, a core of a magnetic material is provided. The core is composed of a central core that is formed continuously in a rotation axis |
| 6725009 |
Image heating device and image forming apparatus using the same |
April 20, 2004 |
| An image heating device with a small thermal capacity that can be heated rapidly. The image heating device includes a fixing belt (20) having a heat resistance; a rotatable heat-generating roller (21), which is at least partially conductive and arranged in contact with an inner perip |
| 6567625 |
Image forming apparatus and process cartridge with delayed rotation of photosensitive member |
May 20, 2003 |
| An image forming apparatus and a process cartridge capable of satisfying both a high quality image and an excellent maintenance property with a simple configuration. A photosensitive member and a charging roller that is a member rotating in contact with the photosensitive member are brou |
