Automatic sheet feeder provided in an image forming machine

Details Automatic sheet feeder provided in an image forming machine Automatic sheet feeder provided in an image forming machine

1996-11-18

1999-10-26

Terrell, William E.

Sheet feeding or delivering

Feeding

Multiple supplies

271 907, 271 912, 271147, 271157, 4147958, B65H 344

Patent

active

059713879

ABSTRACT:
An automatic sheet feeder having a first tray capable of moving upward and downward and a second tray arranged adjacently behind the first tray (upstream in a sheet feed direction). The first tray moves upward to press a first stack of sheets against a sheet feed roller. When the first stack of sheets is all fed out, the first tray moves downward, and a second stack of sheets is moved by a movement mechanism from the second tray onto the first tray. The first tray is shorter than the stack of sheets, and the second tray is longer than the stack of sheets. Even if the second stack of sheets on the second tray is displaced by vibration, the first tray can move downward without interfering with the second stack of sheets.

REFERENCES:
patent: 5085421 (1992-02-01), Sellers
patent: 5102112 (1992-04-01), Takahashi
patent: 5150893 (1992-09-01), Uno et al.
patent: 5195734 (1993-03-01), Tanabe
patent: 5221951 (1993-06-01), Sakamoto
patent: 5335903 (1994-08-01), Martin et al.
patent: 5624108 (1997-04-01), Kubo

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