| 摘要 |
A liquid developer collecting system. A developing unit has a developing roller. A developing roller cleaning unit collects liquid developer on the developing roller. A concentration control unit stores liquid developer collected by the developing roller cleaning unit and controls the concentration of the liquid developer. A first feed unit feeds the liquid developer in the concentration control unit to the developing unit. A second feed unit feeds the liquid developer in the concentration control unit. A developer storage unit stores the liquid developer fed by the second feed unit.
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