Developing device

A developing device includes a housing that stores developer; a developing roll that is rotatably supported in the housing and has a developing region with a roughened surface that supplies developer to an image region of an image holding member; a step portion that is formed at both sides of the de...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Inaba, Shigeru, Oba, Shota, Yamamuro, Takashi, Hirota, Makoto, Andoh, Masahiro
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A developing device includes a housing that stores developer; a developing roll that is rotatably supported in the housing and has a developing region with a roughened surface that supplies developer to an image region of an image holding member; a step portion that is formed at both sides of the developing region of the developing roll and whose diameter is smaller than that of the developing region; and a seal member that contacts a region of the step portion that is opposite to the image holding member.