Ricoh A229 - Crossmixing

DEVELOPMENT AND TONER SUPPLY
2-70
A229 SM
2.6.4 CROSSMIXING
This copier uses a standard cross-mixing mechanism to keep the toner and
developer evenly mixed. It also helps agitate the developer to prevent developer
clumps from forming and helps create the triboelectric charge.
The developer on the turning development rollers [A] is split into two parts by the
doctor blade [B]. The part that stays on the development rollers forms the magnetic
brush and develops the latent image on the drum. The part that is trimmed off by
the doctor blade goes to the backspill plate [C].
As the developer slides down the backspill plate to the agitator [D], the mixing
vanes [E] move it slightly toward the rear of the unit. Part of the developer falls into
the auger inlet and is transported to the front of the unit by the auger [F].
The agitator moves the developer slightly to the front as it turns, so the developer
stays level in the development unit.
A229D570.WMF
[A]
[B]
[C]
[D]
[E]
[F]
[A]
[B]
[C]
[D]
[E]
[F]