COLORING AGENT DENSITY DETECTOR, DEVELOPMENT APPARATUS AND COLORING AGENT DENSITY DETECTION METHOD

PROBLEM TO BE SOLVED: To improve detection accuracy of a developer stored inside, in a development apparatus having a function of detecting density of a coloring agent stored inside.SOLUTION: A rotational state of the recovery chamber conveyance member 303 is recognized at a timing when the frequenc...

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Main Authors KIMURA KAZUFUMI, TANAKA KAYOKO, HIROTA TETSUO, FUJIMORI KOTA, YOSHIDA AKIRA, MATSUE NATSUMI
Format Patent
LanguageEnglish
Japanese
Published 14.04.2016
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASURING
PHOTOGRAPHY
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To improve detection accuracy of a developer stored inside, in a development apparatus having a function of detecting density of a coloring agent stored inside.SOLUTION: A rotational state of the recovery chamber conveyance member 303 is recognized at a timing when the frequency of a signal outputted from a permeability sensor 10 is changed by a conductor rotating according to a rotation of a recovery chamber conveyance member 303 inside a casing 301, and the density of a coloring agent in the developer is detected based on an output signal of the permeability sensor 10 at a timing when a developer in a congested state through being forced to move by a paddle 303a passes through a detection range by the permeability sensor 10.SELECTED DRAWING: Figure 9 【課題】内部に収容された顕色剤の濃度を検知する機能を含む現像装置において、内部に収容される現像剤の検知精度を向上すること。【解決手段】ケーシング３０１内部において回収室搬送部材３０３の回転に従って回転する導電体によって透磁率センサ１０が出力する信号の周波数が変動したタイミングに基づいて回収室搬送部材３０３の回転状態を認識し、パドル３０３ａによって強制的に移動されることにより密集した状態の現像剤が透磁率センサ１０による検知範囲を通過するタイミングにおける透磁率センサ１０の出力信号に基づいて現像剤における顕色剤の濃度を検知することを特徴とする。【選択図】図９
Bibliography:Application Number: JP20140180616