PRESS-CONTACT STATE SWITCHING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

To easily solve paper jam occurring between a first pressure member and a second pressure member.SOLUTION: A pressure-contact state switching device comprises a first pressure-contact spring 133 and a second pressure-contact spring 144. The first pressure-contact spring 133 and the second pressure-c...

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Bibliographische Detailangaben
Hauptverfasser: IMOTO TOMIKO, KINOSHITA KEN
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To easily solve paper jam occurring between a first pressure member and a second pressure member.SOLUTION: A pressure-contact state switching device comprises a first pressure-contact spring 133 and a second pressure-contact spring 144. The first pressure-contact spring 133 and the second pressure-contact spring 144 urge a pressure roller and a fixing pad in directions to bring them into proximity. The pressure-contact state switching device can switch a relative position between the pressure roller and the fixing pad selectively to any one position of a first position where they approach most closely to each other, an intermediate second position, and a third position where they are most separated from each other. The pressure-contact state switching device cancels urging force of both the first pressure-contact spring 133 and the second pressure-contact spring 144 to switch the relative position between the pressure roller and the fixing pad to the third position.SELECTED DRAWING: Figure 12 【課題】第1加圧部材と第2加圧部材との間に発生した用紙詰まりを容易に解消する。【解決手段】圧接状態切換装置は、第1圧接バネ133と、第2圧接バネ144とを備えている。第1圧接バネ133と第2圧接バネ144とは、加圧ローラーと定着パッドとを近接させる向きに付勢する。圧接状態切換装置は、加圧ローラーと定着パッドとの相対位置を、最も接近する第1の位置、中間の第2の位置、および、最も離れる第3の位置、のいずれかの位置に選択的に切り換え可能である。圧接状態切換装置は、第1圧接バネ133と第2圧接バネ144との両方の付勢力を解除することにより、加圧ローラーと定着パッドとの相対位置を第3の位置にする。【選択図】図12