Method of controlling fusing of an image forming apparatus

Abstract

A method of fusing image is for an image forming apparatus including a paper feeder, a photosensitive device having an organic photoconductive (OPC) drum to form an electrostatic latent image on the peripheral surface of the OPC drum, a transferring device for supplying toner powder to the electrostatic latent image and for transferring the toner image on a paper, and a fusing device for fusing the toner image on the paper. The method includes the steps of: measuring ambient temperature and humidity of the transferring device when power is supplied and judging whether or not the transferring device is at low temperature and low humidity by comparing the measured values and set values; after the judgement, heating the fusing device for a first warm-up time if not at low temperature and low humidity or for a second warm-up time if at low temperature and low humidity; and if a print command is inputted after heating of the fusing device, controlling the photosensitive and the transferring device and fusing the transferred toner image on the paper, thereby completing the print. According this fusing step, the fusing device is heated sufficiently when the image forming device is activated at low temperature, whereby poor fusing caused by insufficient heating of the fusing device is prevented.