5.3 CROSS-MIXING
A cross-mixing mechanism is used 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.
Two agitators (helical coils) [A] and [B] are used for cross-mixing. The 1st
agitator [A] moves the developer from left to right. The toner supplied from
the cutout in the toner cartridge holder is mixed with the developer by the 1st
agitator. The 2nd agitator [B] rotates to move the developer back from right to
left. In this way, the developer is evenly distributed in the development unit.
The magnets in the development roller [C] attract the developer, and the
development roller sleeve rotates to carry the developer to the drum. The
doctor blade [D] trims the developer on the development roller to the desired
thickness.
[A]
[B]
[C]
[D]
A219D516.wmf
DEVELOPMENT 20 December 1996
2-20
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