FIXING DEVICE, IMAGE FORMING APPARATUS, AND FIXING CONTROL METHOD

To reduce an amount of emission of a volatile component while preventing occurrence of an offset image in a fixing device.SOLUTION: A fixing device 47 comprises: a fixing member 471; a pressure member 475; an electrifying unit 477; and a control unit 8d. The fixing member 471 is heated and rotates....

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Bibliographic Details
Main Authors KIKUCHI HIDENOSUKE, NAKANO KUNIAKI
Format Patent
LanguageEnglish
Japanese
Published 03.08.2022
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To reduce an amount of emission of a volatile component while preventing occurrence of an offset image in a fixing device.SOLUTION: A fixing device 47 comprises: a fixing member 471; a pressure member 475; an electrifying unit 477; and a control unit 8d. The fixing member 471 is heated and rotates. The pressure member 475 forms a nip part for sandwiching a sheet on which a toner image is formed between a surface of the fixing member 471 and the pressure member, and rotates with the fixing member 481 to convey the sheet. The electrifying unit 477 causes an electrification current to flow to a pair of electrodes 477a, 477b arranged opposite to the surface of the fixing member 471 to electrify the surface of the fixing member 471 to a same polarity as an electrification polarity of the toner. The control unit 8d acquires sheet information including one or more pieces of length information, width information, and thickness information on the sheet, and adjusts the electrification current according to the sheet information.SELECTED DRAWING: Figure 2 【課題】定着装置におけるオフセット画像の発生を防ぎつつ揮発成分の放出量を抑制すること。【解決手段】定着装置４７は、定着部材４７１、加圧部材４７５、帯電部４７７および制御部８ｄを備える。前記定着部材４７１は、加熱され回転する。前記加圧部材４７５は、前記定着部材４７１の表面との間にトナーの像が形成されたシートを挟持するニップ部を形成し、前記定着部材４８１とともに回転することによって前記シートを搬送する。前記帯電部４７７は、前記定着部材４７１の表面に対向して配置された一対の電極４７７ａ，４７７ｂに帯電電流を流すことにより前記定着部材４７１の表面を前記トナーの帯電極性と同極性に帯電させる。前記制御部８ｄは、前記シートの長さ情報、幅情報および厚み情報のうちの１つまたは複数を含むシート情報を取得し、前記シート情報に応じて前記帯電電流を調節する。【選択図】図２
Bibliography:Application Number: JP20210008457