| 摘要 |
A method of controlling the temperature of a heating means, 2, for heating a recording medium, 5, in a fixing device, for example in a copying machine, printer or facsimile machine, which device also includes a temperature detecting means, 4, pressurising means, 2, forming a fixing nip portion as it is kept in contact under pressure with the heating means, and a temperature controlling means, wherein the temperature controlling means selects a target temperature for the heating means on the basis of the quantity of heat lost to the pressurising means and controls the power to the heating means according to the equation P = G(T* - T s ) + P c where T* is the target temperature T s is the detected temperature G is the gain and chosen so as to reduce temperature deviation and ripple P c is the offset and is chosen according to the paper velocity and width. |
