Sheet feeding or delivering – Feeding – Separators
Patent
1997-07-07
1999-09-21
Milef, Boris
Sheet feeding or delivering
Feeding
Separators
271122, B65H 306, B65H 352
Patent
active
059543280
ABSTRACT:
Disclosed is a paper feed mechanism in which copy paper stacked on a paper support member such as a manual insertion tray is fed along the sheet transport direction in a nipped state between an upper roller and a lower roller. The upper roller has, on its outer surface in the described order with respect to the rotational direction, a non-contact area which is not brought into pressing contact with the copy paper and the lower roller, a first contact area which comes into pressing contact with the copy paper and the lower roller and whose frictional coefficient relative to copy paper is set small, and a second contact area which comes into pressing contact with the copy paper and the lower roller and whose frictional coefficient relative to copy paper is set large. The lower roller is mounted on a torque limiter. The lower roller is rotated in a direction opposite to the sheet transport direction via the torque limiter when not coming into pressing contact with the first and second contact areas of the upper roller, while rotated in the sheet transport direction following the rotation of the upper roller when coming into pressing contact with the first and second contact areas of the upper roller.
REFERENCES:
patent: 5318287 (1994-06-01), Okayama
patent: 5372359 (1994-12-01), Miura et al.
Milef Boris
Mita Industrial Co. Ltd.
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