Document feeder and image reader

Details Document feeder and image reader Document feeder and image reader

1998-01-27

2000-08-08

Mancuso, Joseph

Facsimile and static presentation processing

Facsimile

Picture signal generator

358496, 271126, 271117, H04N 104, B65H 306, B65H 108

Patent

active

061010057

ABSTRACT:
A document feeder comprises a hopper table on which documents are to be mounted, a feeding roller for transporting the documents mounted on the hopper table, and lifting system for raising and lowering the hopper table to position the topmost sheet of the documents mounted on the hopper table at a level of the feeding roller. The lifting system includes a hopper motor, and a drive mechanism for raising and lowering the hopper table by means of the driving force. The drive mechanism swings the hopper table when the hopper table is located between an lower limit position and a switching position above the lower limit position, or moves the hopper table vertically with maintaining its posture horizontally when the hopper table is located between the switching position and an upper limit position above the switching position. In addition, the height and the slant angle of the feeding roller sequentially conform to the movement of the hopper table in order to prevent jamming.

REFERENCES:
patent: 4548397 (1985-10-01), Riinzi
patent: 5412485 (1995-05-01), Kashiwagi
patent: 5488485 (1996-01-01), Amemiya
patent: 5634188 (1997-05-01), Johnston et al.
patent: 5715071 (1998-02-01), Takashimizu et al.
patent: 5722653 (1998-03-01), Seidl et al.
patent: 5732307 (1998-03-01), Yoshizuka et al.

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