Ricoh B246 SERIES, Manual, Page: 179 / 268

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Crossmixing
Service manual, section 6.9.3
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Demonstrate the following steps of the mixing process on the slide.
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A mixture of new toner from the toner bottle and recycled toner enters the
development unit from the toner hopper.
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The agitators move the toner to the development roller.
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Toner split off by the doctor blade goes to the backspill plate.
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The mixing vanes transport this toner towards the rear.
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Some toner falls onto the auger and is transported toward the front.
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Mixing does the following:
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Keeps the toner and developer evenly mixed
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Prevents lumps from forming
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Helps create the turboelectric charge on the toner.
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The doctor blade splits the developer into two parts.
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One part goes to the development roller to form the magnetic brush and the
latent image on the drum.
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The other part is returned to the development unit, where it is mixed with new
developer (and recycled toner) and moved back to the development roller.