Toshiba e-STUDIO520 Service Manual page 85

(7) Fusing
Fusing is a process of melting and fixing the toner on the paper.
Method:
The softening point of the toner
(main ingredient: resin) is 90 to 100°C.
p
(Heat)
The toner is melted by the heat of the surface of
the fuser roller.
+
(Pressure)
The pressure roller is pressed against the fuser
roller by the springs to increase adherence of the
melted toner to the paper.
p
Heat and pressure are applied to the paper when
it passes between the fuser roller and pressure
roller.
||
(Fusing)
The toner is fixed on the paper.
(8) Cleaning
Cleaning is a process of recovering the residual toner on the photoconductive drum.
1) The cleaning brush scrapes off the excessive toner and paper wastes. The flicker scrapes off the
toner on the brush.
Also, too prevent the cleaning blade from scratching the surface of the drum to make a circumfer-
ential streak, the varistor is attached between the brush and earth.
2) Cleaning blade scrapes off the residual toner on the drum.
March 2005 © TOSHIBA TEC
Fuser roller
Pressure
Fig.3-18
IH coil
Separation finger
Pressure
Fig.3-19
e-STUDIO520/600/720/850 COPY PROCESS
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Paper
Fuser roller
Paper movement
Pressure roller
3