Development - Ricoh 5510L Service Manual

PRINTER 14 June, 2002

Development

Overview
[A]
[F]
[G]
[B]
[E] [C]
[D]
H310D925.WMF
This machine uses mono-component toner. The AIO cartridge contains two
agitators [F].
The agitators [F] and the mixing blade [D] mix the toner in the toner cartridge and
transport it to the development roller [C]. Friction between the transported toner
and the doctor blade [A] gives the toner a negative charge.
Internal permanent magnets in the development roller attract the toner to the
development roller sleeve. The doctor blade trims the toner to the desired
thickness on the development roller sleeve. The development roller does not
contact the drum [G]. There is a small gap between the toner on the surface of the
development roller sleeve and the drum. Toner jumps across this gap to develop
the latent image.
The development bias consists of ac and dc components. The ac component
improves the transfer of toner.
The guide plate [B] is charged to the same voltage as the development bias. This
helps to keep the toner on the drum.
The toner near-end sensor [E] is under the toner cartridge.
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