EN
Image Formation System
5-27
Image Fusing/Variable Fusing Temperature
During the fusing process, the toner is fused into the paper by heat
and pressure to produce a permanent image. The paper passes
between a heated fusing roller and a soft pressure roller. This melts
the toner and presses it into the paper.
The fusing roller contains a ceramic heating element that provides
heat for the fusing process. Fusing temperature is monitored by the
DC Controller Board, via the thermistor TH1303. If the fusing system
overheats (about 446° F/230° C), a relay opens, interrupting power to
the Fusing Heater, causing a Fuser error message (50.X FUSER
ERROR). If the fusing system exceeds 464° F (240° C), the thermal
fuse will open, cutting off power to the Fuser.
The DC Controller Board maintains a variable fuser temperature that
is dependent on the paper type set in the Paper Handling Menu.
Figure 5-14
Image Fusing
