Sheet feeding or delivering – Feeding – Pack holders
Reexamination Certificate
2001-08-31
2003-11-11
Walsh, Donald P. (Department: 3653)
Sheet feeding or delivering
Feeding
Pack holders
Reexamination Certificate
active
06644650
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an automatic document feeding apparatus, especially to the improved automatic document feeding apparatus of a paper case that can install large amount of pre-placed papers.
BACKGROUND OF THE INVENTION
Coming after the times of continuous improvement, today's electronic products such as scanner, facsimile, photocopier, and printer etc. are born to world to provide the needed convenience in life. And when above-mentioned electronic products are in application, since only one piece of paper can be placed at one time to accomplish the needing motion requirement, so it wastes a redundant time. Therefore, since the automatic document feeding apparatus has been developed, so it provides single paper paging and feeding to greatly improve the application inconvenience of above-mentioned electronic products.
Please refer to
FIG. 1
, which shows an embodiment illustration for an automatic document feeding apparatus of prior art applied in a scanning apparatus. Wherein, the automatic document feeding apparatus is connected with a scanning apparatus
40
to provide a placement of plural pieces of paper
50
and a scanning motion of paging and document feeding for the single paper
50
.
Please refer to
FIG. 2
, which shows a structural section-viewing illustration for an embodiment of prior automatic document feeding apparatus. The prior automatic document feeding apparatus is arranged with a paper case
10
. The paper case
10
is a hollow shell with an open space. The open space may provide a placement for plural pieces of paper
50
. The prior automatic document feeding apparatus also is arranged with a paging document feeding device
30
that is connected to the paper case
10
and provides the document feeder function for the plural pieces of paper
50
.
Wherein the paging document feeding device
30
is a structure that provides the functions of paging and paper feeding and brings in plural papers
50
by a friction force of a roller
31
. Since the friction forces have different sizes of designs of different machine types, so the brought in papers
50
may be one piece, two pieces, or more. The brought in one piece, two pieces or more pieces of papers
50
are positioned between a paper-dividing piece
32
and the roller
31
, by pressing one end of the paper-dividing piece
32
against the roller
31
. The paper-dividing piece
32
is connected to an elastic element
33
, being a spring and can provide elastic force to make the paper-dividing piece
32
presses against the roller
31
.
Since the design is that the friction coefficient between the material of roller
31
and the paper
50
is greater than the friction coefficient between the material of paper-dividing piece
32
and the paper
50
, and the friction coefficient between the material of paper-dividing piece
32
and paper
50
is greater than the friction coefficient among the papers
50
, so when the roller
31
brings in one piece, two pieces or more pieces of papers, because the friction coefficients among the roller
31
, paper-dividing piece
32
and papers
50
are different, it will cause that only single piece of paper
50
be rolled out from the roller
31
to complete the functions of document feeding and paging.
When the prior automatic document feeding apparatus places plenty of pre-placed papers
50
, firstly because the gravity of the large amount of papers
50
impacts the roller
31
, it causes the friction coefficient of the roller
31
to change. The influence of the change of friction force will be unable to reach the expecting usage. Or because the direct impact of the incoming of large amount of papers
50
, the elastic element
33
will be over-pressed and the function of paging document feeding device
30
will be useless and the function of paging can not be reached.
In summarizing above descriptions, it can be concluded that the prior automatic document feeding apparatus usually will send out several pieces of paper when the prior automatic document feeding apparatus is over-loaded with large amount of pre-placed paper, and the amount of pre-placed papers must be replaced or reduced by the observing operation personnel, so lots of man power, time and materials are wasted. Above problem must be solved as soon as possible no matter in individual or in industry to reduce the cost paid by individual or society and to promote the nation's industry competition power. Therefore the breakthrough of this problem is most urgent indeed.
SUMMARY OF THE INVENTION
The major object of the present invention is to provide an improved automatic document feeding apparatus, which can supply large amount of pre-placed paper and ensure the functions of automatic paper feeding and paging.
In order to reach above-mentioned object, an improved automatic document feeding apparatus of the present invention includes a paper case, a dividing unit and a paging document-feeding device.
The paper case is has an open space for containing a plurality of papers.
The dividing unit is disposed at proper location inbeing the open space, for dividing said plurality offer providing papers into paper of a first zone and those of a second zone.
The paging document feeding device is connected to the paper case, for feeding a single paper from papers of the first zone.
For your esteemed reviewing committee members to further understand and recognize the present invention, a detailed description in accordance with several drawings are presented as following.
REFERENCES:
patent: 5186557 (1993-02-01), Fushimi
patent: 5653433 (1997-08-01), Ishizuka
patent: 5727782 (1998-03-01), Okada
Chiang Shu-Ya
Fang Po-Hua
Bower Kenneth W
Umax Data Systems Inc.
Walsh Donald P.
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