Sheet feeding or delivering – Feeding – Separators
Patent
1994-10-12
1995-06-06
Bollinger, David H.
Sheet feeding or delivering
Feeding
Separators
271117, 271122, 271125, 271274, B65H 306, B65H 352
Patent
active
054215692
ABSTRACT:
A replacement roller cartridge for a cut sheet retard feeder. The cartridge assembly includes a feed roll , a nudger roll, and a retard roll aligned so that the axis of rotation are substantially in the same plane within a frame. The frame is inserted into the feed head and pivoted into an active position. Upon insertion into the feed head, the retard roll is captured by a separate retard bracket so that when the feed head is pivoted into the active position the retard roll is withdrawn from the frame and forms a feed nip with the feed roll. A gear train is provided on both sides of the cartridge to drive the feed roll and the nudger roll. The cartridge assembly provides a low cost, easily replaceable unit that eliminates the need for a service technician to replace worn feed rolls. The design is also adaptable for use in various types of sheet and document feeders and can be used throughout a printing machine. The preassembled cartridge also obviates the need for a technician to calibrate or adjust the positions of the feed rolls as they are locked into position upon insertion and rotation of the cartridge frame into the feed head.
REFERENCES:
patent: 5039080 (1991-08-01), Kato et al.
patent: 5172899 (1992-12-01), Tajima
patent: 5265859 (1993-11-01), Watson et al.
Bollinger David H.
Kepner Kevin R.
Milef Boris
Xerox Corporation
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