Image forming apparatus with toner supplying roller

A developing device has a developer bearing member, a housing adapted to accommodate a developer, and a supply roller adapted to supply the developer within the housing for the developer bearing member. The supply roller has an outer circumferencial foam layer made of resin or rubber. The foam layer...

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Bibliographische Detailangaben
Hauptverfasser:	OKADA TAKUYA, OKUNO YUUSUKE, SANO TETSUO, AOKI YOSHIKAZU, DEMIZU ICHIRO, NAKADE YOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BEARINGS BLASTING CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOLOGRAPHY LIGHTING MAGNETOGRAPHY MECHANICAL ENGINEERING PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SPRAYING OR ATOMISING IN GENERAL THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A developing device has a developer bearing member, a housing adapted to accommodate a developer, and a supply roller adapted to supply the developer within the housing for the developer bearing member. The supply roller has an outer circumferencial foam layer made of resin or rubber. The foam layer has an air permeability of 150-200 ml/cm2/s, a hardness of 50-200 N, and an average cell density of 20-40 per 25 mm width.