Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2001-07-13
2003-07-01
Bollinger, David H. (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C271S147000, C271S157000, C271S160000
Reexamination Certificate
active
06585254
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a feeding device. More particularly, this invention relates to a feeding device for supporting and moving media such as papers to a printing device.
2. Description of Prior Art
FIG. 1
is a plan view of a feeding device F
1
disclosed by the FIG. 12 of U.S. Pat. No. 5,893,556. The feeding device F
1
has a hopper table
1
′, springs
2
′ (
2
′), a pressure plate
3
′ and several rollers
5
′. The pressure plate
3
′ is supported by the spaced springs
2
′ (
2
′) which are disposed on the hopper table
1
′, and the rollers
5
′ are disposed on the pressure plate
3
′. The stacked sheets S
1
′ are put on the pressure plate
3
′ and scrubbed by the rollers
5
′.
However, once the specification of the sheet S
1
′ is medium size or smaller, such as envelope size, only one roller
5
′ can make contact with the media and only a small portion of the roller's surface may, in fact, contact the media. The pressure plate
3
′ easily becomes uneven due to the uneven contact with the rollers
5
′, and the sheets S
1
′ may be stuck or jammed during the feeding process.
SUMMARY OF THE INVENTION
To solve the above problem, the primary object of this invention is to provide a feeding device for transmitting media such as paper to a printing device. The feeding device comprises a base, a reciprocating mechanism, a recovery device, a pallet and a scrubbing device. The reciprocating mechanism is a parallel motion mechanism disposed on the base and moved between an initial site and a predetermined site. The recovery device is disposed on the reciprocating mechanism and intended to move the reciprocating mechanism toward the initial site. The pallet is disposed on the reciprocating mechanism and used for supporting the media. The scrubbing device is disposed on the pallet and used for moving the media.
As the media is loaded, the pallet is shifted from an initial site toward a predetermined site in parallel, and thus the media supported by the pallet is sequentially transmitted to the printing device by the scrubbing device.
REFERENCES:
patent: 2928558 (1960-03-01), Bamford et al.
patent: 3843115 (1974-10-01), Di Fulvio et al.
patent: 4078788 (1978-03-01), Bellis et al.
patent: 5158275 (1992-10-01), Sellers et al.
patent: 5228677 (1993-07-01), Asakawa
patent: 5857671 (1999-01-01), Kato et al.
patent: 5893556 (1999-04-01), Akahane et al.
patent: 5954327 (1999-09-01), Lin et al.
patent: 6123329 (2000-09-01), Sato et al.
patent: 6250500 (2001-06-01), Schweiberer
patent: 6254084 (2001-07-01), Hellmer
Benq Corporation
Bollinger David H.
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