DEVELOPING ROLL FOR ELECTROPHOTOGRAPHIC APPARATUS

PROBLEM TO BE SOLVED: To provide a developing roll for an electrophotographic apparatus can achieve both attenuation properties of residual electric charges and toner adhesion resistance. SOLUTION: In the developing roll 10, a base rubber layer 14, an intermediate layer 16, and a surface layer 18 ar...

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Bibliographische Detailangaben
Hauptverfasser:	MINEMATSU KOSUKE, HAYASHI YOSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	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 PHOTOGRAPHY PHYSICS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a developing roll for an electrophotographic apparatus can achieve both attenuation properties of residual electric charges and toner adhesion resistance. SOLUTION: In the developing roll 10, a base rubber layer 14, an intermediate layer 16, and a surface layer 18 are stacked on the outer circumference of a conductive shaft 12 in this order, wherein the surface layer 18 is formed of a resin composition including (A) a silicone graft acrylic polymer, (B) ether polyol-based modified diisocyanate, (C) an ion conductive agent, and (D) a crosslinking agent having a functional group reacting with an isocyanate group. It is preferred that the toner adhesion power be 100 nN or less and the MD-1 hardness of a roll surface be 70 degrees or less. COPYRIGHT: (C)2009,JPO&INPIT