Canon NP6012 Service Manual page 42

fm COPYING PROCESS
H. Separation (step 6)
Static eliminator
A
Figure 2-112
Copy paper is separated from the photo-
sensitive drum using the rigidity of the paper.
Thin paper, however, has low rigidity and
can wrap around the photosensitive drum.
To prevent such a problem, the copier
applies a positive voltage to the separation
static eliminator to weaken the static attrac-
tion between the photosensitive drum and
copy paper, thereby facilitating separation.
2-6 COPYRIGHT © 1995 CANONINC,
|. Fixing (step 7)
Thermistor
Fixing film
Copy paper
Pressure roller Cleaning roller
Figure 2-113
After transfer, the toner image is fixed to
the paper while the copy paper moves
through the fixing film and the pressure
roller.
The fixing film has a seamless construc-
tion and is made of special material so that
melting toner will not stick to the film—fur-
ther, the surface of the pressure roller is
cleaned by a cleaning roller.
The temperature of the fixing heater is
monitored by the thermistor (TH1) located
more or less at the center of the fixing heater
and serves to make sure that the heater is
controlled to a specific temperature.