Low friction doctor blade

A device within an image forming apparatus (100) for positioning a doctor blade (121) against a developer roller (124) and preventing toner leakage. The device includes a developer housing (129) for containing the developer roller (124) and the doctor blade (121). A biasing member (50) is positioned...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BUCHANAN, JOHN ANDREW, PALUMBO, FRANKLIN JOSEPH, NEWMAN, BENJAMININ KEITH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CINEMATOGRAPHY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MAGNETOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A device within an image forming apparatus (100) for positioning a doctor blade (121) against a developer roller (124) and preventing toner leakage. The device includes a developer housing (129) for containing the developer roller (124) and the doctor blade (121). A biasing member (50) is positioned adjacent to the doctor blade for forcing the doctor blade (121) against the developer roller (124) for controlling the mass flow and charge level of the toner. The doctor blade (50) is supported by retention stops (14, 16) on a front edge and a pair of supports (131) on the back edge. Toner is prevented from leaking through the device by a flap seal (133) positioned along the doctor blade back side and a seal positioned between each end of the doctor blade end and developer housing (129). The invention provides for the doctor blade (121) to be freely positioned between the retention stops (14, 16) developer housing (129), and seals (133) providing for the doctor blade (121) to contact the developer roller (124) in a consistent manner.