IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To change image forming conditions at the failure of a compressed air spraying device according to the type of a sheet to be conveyed.SOLUTION: An image forming apparatus includes a heating roller 202 that includes a heater 201, a pressure roller 203 that is brought into pressu...

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1. Verfasser: SOFUE FUMITAKA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To change image forming conditions at the failure of a compressed air spraying device according to the type of a sheet to be conveyed.SOLUTION: An image forming apparatus includes a heating roller 202 that includes a heater 201, a pressure roller 203 that is brought into pressure contact with the heating roller 202, a sheet peeling device that sprays compressed air between the heating roller 202 and a sheet ejected from a nip part formed by the heating roller 202 and pressure roller 203 to peel the sheet from the heating roller 202, a state detection unit 307 for detecting failure of the sheet peeling device, and a medium sensor 111 that detects the types of sheets. When the failure of the sheet peeling device is detected by the state detection unit 307, a CPU 306 performs control of image formation on the basis of a result of detection by the medium sensor 111 (steps S2 to S9). 【課題】圧縮空気の気体噴射装置の故障時に、搬送される用紙の紙種に応じて、画像形成条件を変更すること。【解決手段】ヒータ201を含む加熱ローラ202と、加熱ローラ202に圧接する加圧ローラ203と、により形成されるニップ部から排紙されるシートを加熱ローラ202から剥離するために、加熱ローラ202とシートとの間に圧縮空気を噴射するシート剥離装置と、シート剥離装置の故障を検知するための状態検知部307と、シートの紙種を検知するメディアセンサ111を備え、CPU306は、状態検知部307によりシート剥離装置の故障が検知された場合には、メディアセンサ111の検知結果に基づいて、画像形成の制御を行う(ステップS2〜S9)。【選択図】図3