Ricoh A163 Service Manual page 29

3. Development
The magnetic developer brush on the development roller comes in contact with
the latent image on the drum surface. Toner particles are electrostatically
attracted to the negatively charged latent image areas.
4. Pre-Transfer Lamp
The pre-transfer lamp (PTL) illuminates the drum prior to image transfer. This
reduces the attraction between the toner and the drum, thus making image
transfer easier.
5. Image Transfer
Copy paper is fed to the drum surface, at the exact timing, to align the copy
paper and the developed image on the drum surface. Then a strong negative
charge is applied to the back side of the paper. The negative charge pulls the
toner particles from the drum surface onto the paper.
6. Paper Separation
A strong ac corona discharge is applied to the back side of the copy paper,
reducing the charge on the paper and breaking the electrostatic attraction
between the paper and the drum. Then, the stiffness of the copy paper causes it
to separate from the drum. The pick-off pawls help to separate paper which has
low stiffness.
7. Cleaning
The cleaning blade, which is angled against drum rotation (counter blade
system), removes any toner remaining on the drum surface.
8. Quenching
The light from the quenching lamp electrically neutralizes the surface of the drum.
A163 2-3 FSM