Development; Black Development - Ricoh M5 Service Manual

DEVELOPMENT

1. Black Development

Master Belt
Bias Brush
Development Roller
— Introduction —
The development unit transforms the electric latent image on the master surface into a visible toner
image.
The toner supply bar carries toner from the toner tank to the development roller. The development
roller rotates in the same direction as the master belt.
because the roller has a magnetic rubber layer.
ing blade, only a thin coating of positively charged toner particles stays adhered.
Then, the roller turns past the master belt.
face attracts toner from the development roller, making the image visible.
— Black Ferrite Toner —
This model uses monocomponent toner, which is composed of resin and ferrite. Attraction between
the ferrite and the magnetic rubber layer causes the toner to adhere to the development roller. This
toner also has a high electrical resistance, which gives it good development and image transfer
characteristics, even under high humidity conditions.
/
Toner Supply Bar \
The negatively charged latent image on the master sur-
Toner Metering Blade
Toner adheres to the development roler
A the development roller turns past the toner meter-
S
3-31
May, 25, 1985
Mixing Plate