Patent ID: 6381422
Filing Date: 2002-04-30
Classification: G03G

Abstract:
An image forming apparatus for controlling a fixation speed by fine adjustment in accordance with control of a fixation temperature, comprising:medium supplying means for supplying an image forming medium at a constant supply speed; image forming means for forming a predetermined image by using a development material based on inputted image information and holding said image forming medium by an image bearer; carrying means for carrying said image forming medium supplied to said image forming means; transferring means for transferring said image development material formed as an image on said image bearer by said image forming means onto said carried image forming medium; fixing means for heating and fusing said transferred development material by a heating member and fixing said development material on said image forming material; and controlling means for controlling a medium supply speed of said medium supplying means, a medium carriage speed of said carrying means, and an optimum fixation temperature of said fixing means in accordance with a type, a material and a thickness of said image forming medium, and for fine-adjusting a fixation speed of said heating member for carrying said image forming medium in accordance with said fixation temperature whose setting changes in accordance with a type, a material and a thickness of said image forming medium, wherein said controlling means changes said fixation speed so as to be substantially in inverse proportion to increase in said fixation temperature, and controls in such a manner that a relative speed relationship between a transfer belt constituting said transferring means and said fixation speed of said heating means of said fixing means is constantly maintained.