Paper feeding apparatus

Sheet feeding or delivering – Feeding – Pack holders

Reexamination Certificate

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Reexamination Certificate

active

06837490

ABSTRACT:
A paper feeding apparatus includes a first support member for supporting a central area of a lower surface of printing paper placed on a paper tray, second support members for supporting corner areas of the lower surface of the printing paper, sensors for detecting heights of an upper surface of the printing paper placed on the paper tray, motors rotatable based on signals from the sensors, and lift screws vertically movable by the motors. The second support members are connected to the lift screws to be vertically movable therewith, respectively.

REFERENCES:
patent: 3355167 (1967-11-01), Reeves
patent: 4349186 (1982-09-01), Nakamura
patent: 6065745 (2000-05-01), Casper et al.
patent: 532292 (1931-08-01), None
patent: 547205 (1932-03-01), None
patent: 42 16 627 (1993-11-01), None
patent: 0 189 746 (1986-08-01), None
patent: 2 204 301 (1988-11-01), None
patent: 2 267 081 (1993-11-01), None
patent: 59078013 (1984-05-01), None
patent: 5-186074 (1993-07-01), None
patent: 6-1456 (1994-01-01), None
patent: 6-179530 (1994-06-01), None
patent: 7-206168 (1995-08-01), None
patent: 08012099 (1996-01-01), None

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