Patent ID: 8634735

Claim:
An image forming apparatus comprising: an image forming part configured to perform a printing operation that comprises picking up a recording medium, forming an image on the recording medium, and discharging the recording medium on which the image has been formed out of the image forming apparatus, the image forming part including a fusing part configured to fix the image on the recording medium by applying at least heat at a temperature; and a controller configured to control the image forming part, if the image forming apparatus receives a printing data and starts warming up, to pick up a first page of the recording medium corresponding to the printing data at a warm up pick up timing and to perform the printing operation at a warm up printing speed, the controller being configured to control the image forming part to pick up remaining recording medium, subsequent to the first page, corresponding to the print data at a reference pick up timing and to perform the printing operation at a reference printing speed, the reference pick up timing corresponding to a reference duration according to the reference printing speed, the warm up pick up timing being earlier than the reference pick up timing, the warm up printing speed being slower than the reference printing speed and a warm up duration according to the warm up printing speed being longer than the reference duration; wherein the subsequent pages are printed at a reference speed regardless of the number of pages in the print data and the temperature of image forming apparatus.