IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING DEVELOPER REFRESHING PROCESS THEREIN
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United States of America Patent
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app pub date -
Sep 22, 2016
filing date -
Sep 22, 2016
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Abstract
An image forming apparatus includes a developing unit attachment part to which developing units are to be attached, each of the developing units being associated with a first criteria for performing developer refreshing and a second criteria for performing developer refreshing, wherein the second criteria is defined so as to be met prior to the first criteria, and a controller configured to control a timing of developer refreshing executed for each of the developing units according to the first and second criteria values thereof. When the first criteria for performing developer refreshing is met for at least one of the developing units, the controller causes developer refreshing to be performed for all developing units whose first or second criteria is met.
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