Transfer Unit; General Descriptions - Toshiba e-STUDIO2500c Service Manual

13. TRANSFER UNIT

13.1 General Descriptions

Transfer is a process of decaling a toner image from the photoconductive drum onto paper.
A toner image formed on the photoconductive drum is temporarily transferred onto the transfer belt,
and the toner image is then transferred from the transfer belt onto paper. The first transfer from the
drum to the transfer belt is called the 1st transfer, and the second transfer from the transfer belt to paper
is called the 2nd transfer. To form a color image, the images of yellow (Y), magenta (M), cyan (C) and
black (K) are transferred and overlaid on the transfer belt in order, and then the overlaid images are
transferred onto paper.
After the completion of the 2nd transfer, the residual toner on the transfer belt is scraped off by the
transfer belt cleaning blade and then transported to the used toner bag.
1st transfer roller ( C )
1st transfer roller ( M )
1st transfer roller ( Y )
Lift roller
Used toner auger
Drive roller
Drum ( Y )
Transfer belt
Drive roller cleaning mylar
Transfer belt cleaning blade
May 2006 © TOSHIBA TEC
1st transfer roller ( K )
Idling roller
Drum ( C )
Drum ( K )
Drum ( M )
Image quality sensor
Image position aligning
sensor ( front / rear )
Fig. 13-1
13 - 1
1st transfer roller cam motor
1st transfer roller status
detection sensor
2nd transfer facing roller
cleaning mylar
2nd transfer roller
position detection sensor
e-STUDIO2500c/3500c/3510c TRANSFER UNIT
Paper clinging
detection sensor
2nd transfer
facing roller
2nd transfer roller
Tension roller
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