Cross Mixing - Ricoh FT7770 Service Manual

Cross Mixing

3.
The crossmixing mechanism has two functions: 1) it keeps the toner and de-
veloper evenly mixed; and 2) it creates a triboelectric charge by mixing and
agitating the developer.
The developer that is attracted to the development roller at point A is split
into two parts by the doctor blade.
develop the latent image on the drum.
the doctor blade and directed to the backspin plate.
As the developer slides down the backspin plate it is moved toward the
front of the unit by the mixing vanes
inlet (E) and is transported to the rear of the unit by the mixing
the auger
auger (F), where it drops onto the recycle plate
developer moved to the rear by the mixing auger is balanced by the amount
shifted to the front by the mixing vanes.
Part B (the magnetic brush) goes on to
However, part C is trimmed off by
(D). Some of the developer falls into
( G ) .
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April, '89
The amount of