Toshiba e-STUDIO2500c Service Manual page 90

7) 2nd transfer
- An electrostatic attracting force occurs between the polarized charge (negative) on the lower sur-
face of transfer belt and the belt itself (positive). That makes the toner being absorbed from the
belt to the paper. Then an electric field is formed between the 2nd transfer roller and the transfer
belt drive roller, which generates a paper polarization and thus the toner is transferred from the
belt to the paper.
8) Fusing process
Fusing is a process of melting the toner on the paper and fixing it firmly onto the paper.
Method:
The softening point of the toner (main component: resin) is 105-120°C.
↓
(Heat)
Toner is melted by the fuser belt.
+
(Pressure)
The fuser belt is pressed against the pressure roller by the springs to increase adherence of the
melted toner to the paper.
↓
The paper is subjected to the heat and pressure when passing through the fuser belt and the pres-
sure roller.
↓
(Fusing)
The toner on the paper is fused to it.
e-STUDIO2500c/3500c/3510c COPY PROCESS
Fig. 3-18
Fuser belt
Fig. 3-19
3 - 10
Pressure roller
Pressure
Separation
roller
Fuser roller
May 2006 © TOSHIBA TEC