(1) Revolver Drive
The center pin [A] at the rear and the two revolver support rollers [B] on the
development stay [C] keep the development unit in the proper position. The
revolver drive motor [D] rotates the development unit [E].
The revolver drive motor, which is a stepper motor, rotates the development
unit 93 degrees counter-clockwise, then 3 degrees clockwise to keep the
90-degree rotation for each color; this method allows the revolver locking
arm [F] to secure an exact 90-degree rotation.
When the revolver rotates, the toner supply release solenoid moves the
toner supply motor away from the revolver unit.
[B]
[E]
[C]
[A]
93 degrees
3 degrees
Time
Revolver
Motor
Speed
Forward
Reverse
[F]
[E]
[D]
Detailed
Section
Descriptions
DEVELOPMENT UNIT
SM 2-75 A166/A187/A189
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