Sheet feeding or delivering – Feeding – Separator and conveyor
Reexamination Certificate
1999-09-15
2001-02-13
Bollinger, David H. (Department: 3651)
Sheet feeding or delivering
Feeding
Separator and conveyor
C271S010110, C271S120000, C271S121000
Reexamination Certificate
active
06186490
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a sheet dispensing device, particularly to be incorporated into, for example, a bill handling and dispensing unit of an automatic transaction system, cash dispenser.
A device of this construction is proposed in, for example, Japanese Utility Model Laid-open No. 63-167416 for “Sheet Delivery Controller”. This publication describes about feeding of the bill by the feed roller that corresponds to the friction roller for the bills repeatedly stored. The separation promotion component of high friction and high modules member is placed in front of both rollers. The separation promotion component comes in between both rollers, when it separates a bill by both rollers rotating. By this, it has been explained that the bill is separated.
SUMMARY OF THE INVENTION
FIGS. 11 and 12
show proposed sheet dispensing devices useful in setting forth the inventors analysis of problems and their causes in sheet feeding, as a part of the invention.
The sheet dispensing device shown in
FIG. 11
is incorporated into a system principally for handling bills at a high rate. The sheet dispensing device shown in
FIG. 11
comprises a rotating feed roller
102
having a highly frictional part
101
, a nonrotatable gate roller
103
having a highly frictional part in its circumference and disposed opposite to the feed roller
102
, a pickup roller
104
for delivering bills, having a highly frictional part
107
in its circumference, and a pressure plate
110
urged by a spring
109
so as to press a stack of bills contained in a bill storage space having wall
131
against the pickup roller
104
by a fixed pressure.
The sheet dispensing device shown in
FIG. 12
does not have any member corresponding to the pickup roller
104
shown in FIG.
11
. As shown in
FIG. 12
, the sheet dispensing device has a feed roller
102
having a highly frictional part
101
in its circumference and disposed with a part thereof included in a bill storage space. A stack of bills is pressed by a fixed pressure against the feed roller
102
, and the highly frictional part
101
of the feed roller
102
delivers bills stored in the bill storage space one at a time.
The sheet dispensing device shown in
FIG. 11
is designed to handle Japanese Yen bills and places the following restrictions on the size of bills to be handled by the sheet dispensing device. The feed roller
102
and the pickup roller
104
rotate continuously to deliver bills at a high rate one at a time at equal intervals by exerting frictional force to the bills by the highly frictional parts
101
and
107
formed in parts of the circumferences thereof, respectively, and the bills are separated one by one by the cooperative action of the feed roller
102
and the gate roller
103
disposed opposite to the feed roller
102
. Therefore, the length of the bills with respect to the delivery direction may sufficiently be shorter than the circumferences of the feed roller
102
and the pickup roller
104
, i.e., &pgr;×D (D is the diameter of the pickup roller
104
), and may be greater than a length of L+R (L is the distance between a point where the feed roller
102
and the gate roller
103
overlap each other and the pickup roller
104
, and R is the length of the highly frictional part of the pickup roller
104
.) Therefore, the diameters D of the feed roller
102
and the pickup roller
104
may be increased to handle bills greater in size, which entails increase in the size of the device.
On the other hand, when sending out creased bills or infirm bills, longer bills are more liable to be buckled and to cause faulty delivery. Accordingly, different sheet dispensing devices differing in the dimensions D, L and R is to be used to handle foreign bills of sizes varying in a wide range, other than that of Japanese Yen bills. Furthermore, it is difficult to determined appropriate dimensions in designing a sheet dispensing device capable of handling bills including different kinds of bills of greatly different sizes, and hence the sheet dispensing device imposes restrictions on the size of bills.
The sheet dispensing device shown in
FIG. 12
does not have any member corresponding to the pickup roller
104
of the sheet dispensing device shown in FIG.
11
. This sheet dispensing device is unable to send out satisfactorily bills having folds and different paper qualities depending on the period of circulation if only the feed roller
102
is used, and the device is liable to fail in sending out the bills or to dispense the bills in skew positions due to the application of unbalanced forces to the bills.
It is an object of the present invention to solve the foregoing problems and to provide a compact sheet dispensing device capable of handling sheets of various paper qualities and various creased conditions with high reliability and of dealing with operations for sending out sheets of different sizes and different lengths.
Broadly, the solution involve reducing L by reconstructing the pickup and feed elements while keeping their functions. The best mode is to reduce L to zero.
With the foregoing objects in view, according to a first aspect of the present invention, a sheet dispensing device comprises a sheet container for containing sheets; rotating feed rollers
2
for feeding sheets to the next device, having highly frictional parts (rubber parts
22
) in its circumference, and nonrotatable gate rollers
3
disposed opposite to the feed rollers
2
and respectively having highly frictional parts in their circumference; wherein pickup rollers
4
respectively having highly frictional parts in their circumferences are disposed coaxially with the feed rollers
2
and not opposite to the gate rollers
3
so as to rotate together with the feed rollers (FIGS.
1
and
3
). According to a second aspect of the present invention, a sheet dispensing device comprises feed rollers
2
, and guide rollers
13
disposed coaxially with the feed rollers
2
so as to rotate together with the feed rollers
2
, having a diameter slightly greater than that of the feed rollers, and each having a part of a phase corresponding to a phase in which the highly frictional parts (rubber parts
22
) of the feed rollers start delivering a sheet, having a diameter sufficiently smaller than that of the feed rollers
2
(FIGS.
7
and
8
).
REFERENCES:
patent: 4779861 (1988-10-01), Ozawa et al.
patent: 5098078 (1992-03-01), Nakanishi
patent: 5687963 (1997-11-01), Mennie
patent: 60-202024 (1985-10-01), None
patent: 63-167416 (1988-07-01), None
patent: 6-312845 (1994-11-01), None
Kato Riichi
Matsuura Kunihiro
Shibata Shinji
Sugiura Akihiro
Bollinger David H.
Hitachi , Ltd.
Mattingly Stanger & Malur, P.C.
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