Image fixing apparatus and image forming apparatus capable of effectively controlling an image fixing temperature
US7734208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2039
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image fixing apparatus controls temperature of a rotating member for fixing with compensation for delay by using a Smith predictor with a controlled object model to reduce temperature ripple effectively. In one example, the image fixing apparatus includes a pair of rotating members to form a nip portion, a heater to heat the rotating member, a temperature sensor to detect temperature of the rotating member, a calculator to calculate a heat value to attain a target temperature of the rotating member, a controller to control the heater based on a calculation result of the heat value with compensation for delay using a model according to the calculation result, and a selector to select a control in which an output of the compensation is input into the calculator or a control in which the output of the compensation is not input into the calculator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.