Development
D017/D018/D019/D020 6-40 SM
6.9.5 TONER SUPPLY
Toner Bottle Replenishment Mechanism
When a toner bottle is placed in the bottle holder unit [A] and the unit is pushed in
completely, pin [B] moves against the side [C] of the PCU, and the toner shutter [D] is
pulled out to open the bottle. When the toner bottle holder lever [E] is put back in the
original position, the cap [F] on the toner bottle is pulled away and kept in place by the
chuck [G].
The toner supply mechanism transports toner from the bottle to the development unit. The
toner bottle has a spiral groove [H] that helps move toner to the development unit.
When the bottle holder unit is pulled out to add a new toner bottle, the following happens
automatically to prevent toner from scattering.
 The chuck releases the toner bottle cap into its proper position.
 The toner shutter shuts to block the opening as a result of pressure from a spring.
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