FIXING DEVICE AND IMAGE FORMING APPARATUS

To prevent the occurrence of failure in conveying a recording medium and failure in image quality caused by an attachment, such as paper powder and toner attached to a leading end of a conveyance guide member.SOLUTION: A fixing device 11 has a heating rotating body 15 that has a heat source, a press...

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Bibliographic Details
Main Authors SAITO OSAMU, IKEDA TAMOTSU, NANNO SHIGEO
Format Patent
LanguageEnglish
Japanese
Published 28.01.2021
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To prevent the occurrence of failure in conveying a recording medium and failure in image quality caused by an attachment, such as paper powder and toner attached to a leading end of a conveyance guide member.SOLUTION: A fixing device 11 has a heating rotating body 15 that has a heat source, a pressure rotating body 16, a conveyance guide member 17 that conveys a recording medium P near a nip position between the heating rotating body 15 and the pressure rotating body 16, and storage means 40 that stores the number of the recording media P fed in a single-sided printing mode. When the count number i accumulated in the storage means 40 reaches a predetermined number m and a printing mode immediately thereafter is also the single-sided printing mode, the fixing device changes the printing mode of at least one medium in the print job of the single-sided printing mode to a double-sided printing mode.SELECTED DRAWING: Figure 1 【課題】搬送ガイド部材の先端に付着した紙粉やトナーなどの付着物に起因する記録媒体の搬送不良や画像品質不良の発生を防ぐ。【解決手段】熱源を有する加熱回転体１５と、加圧回転体１６と、記録媒体Ｐを前記加熱回転体１５と前記加圧回転体１６との間のニップ位置近傍に搬送する搬送ガイド部材１７と、記録媒体Ｐの片面印刷モードでの通紙枚数を記憶する記憶手段４０と、を有し、前記記憶手段４０に蓄積されたカウント数ｉが所定枚数ｍに到達し、かつ直後の印刷モードも片面印刷モードである場合に、当該片面印刷モードの印刷ジョブのうち少なくとも１枚を両面印刷モードに変更する、ことを特徴とする定着装置１１により解決される。【選択図】図１
Bibliography:Application Number: JP20190124387