Fixing device and image forming apparatus incorporating same

A fixing device includes a fixing rotator, a pressure rotator, and a pressure assembly that forms a fixing nip therebetween and includes a first adjuster and a second adjuster. The first adjuster includes a pressure cam, a first biasing device, a first pressure lever that holds the pressure rotator,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Watanabe, Yohhei, Suzuki, Naoto, Kawata, Teppei, Hirose, Fumihiro, Ujiie, Masateru, Sakamaki, Takashi, Namekata, Shinichi, Amita, Akiyasu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A fixing device includes a fixing rotator, a pressure rotator, and a pressure assembly that forms a fixing nip therebetween and includes a first adjuster and a second adjuster. The first adjuster includes a pressure cam, a first biasing device, a first pressure lever that holds the pressure rotator, and a second pressure lever that moves with the pressure cam and presses against the first pressure lever via the first biasing device. The first adjuster adjusts a load of the first biasing device to adjust a pressure force from the pressure rotator to the fixing rotator. The second adjuster includes an adjustment screw is driven into the second pressure lever, and a retainer that retains an adjusted state between the adjustment screw and the first pressure lever. The second adjuster adjusts a holding position of the first pressure lever to hold the pressure rotator.