A printing apparatus can reduce wasted power consumption, and prolong the life
of an image forming section and fixing pressurizing rollers. It includes a printer
control unit including a video controller and engine controller. According to a
print reservation from the video controller, the engine controller controls a paper
transport mechanism such as feed rollers, transport rollers and lifters, thereby
feeding paper from a paper inlet designated by a printing condition. The engine
controller controls a laser scanner unit to transfer a formed image to a sheet
with a high voltage unit, and fixes it by a fixing assembly. It controls the paper
transport mechanism to output the paper to the paper outlet designated by the printing
condition. The image forming section and fixing pressurizing rollers are individually
rotatable. Their rotation is stoppable individually without interference in a time
from printing the first side to reversing and refeeding the paper.
