JP4862609B2 - Sheet feeding device and check reading device - Google Patents

Description

  The present invention relates to a sheet feeding device incorporated in a check reading device, a printer, or the like for separating and feeding sheets such as a check and recording paper one by one.

  In a financial institution such as a bank, checks (security securities) such as checks and bills brought in are put on a check reading device, the surface image and magnetic ink characters are read, and the check type is checked according to the reading result. Sorting work is performed. In recent years, with the spread of electronic payments, read image data and magnetic ink characters are processed by a computer, and checks are managed by a computer. Patent Document 1 discloses such a check reading apparatus.

  Here, in order to reliably read the check information, it is necessary to feed the check one by one and convey it via the reading position of the magnetic head for reading magnetic ink characters and the reading position of the scanner for reading images. It is. If a plurality of checks are transported in an overlapped state, information cannot be read accurately, and the checks may be jammed on the transport path.

  As a separation mechanism for feeding sheets such as checks stored in a stacked state one by one, a pad separation system that separates the sheets by feeding them against a separation pad made of a material with a high friction coefficient, and A retard roller system is known in which a sheet is separated by passing between a sheet feed roller and a retard roller on which a rotational load pressed against the sheet feed roller is applied.

Patent Document 2 discloses a sheet supply apparatus suitable for separating highly rigid sheets and feeding them one by one. In the sheet supply device disclosed herein, the separation pad is rotatably supported so that the contact surface of the separation pad is in close contact with the surface of the sheet fed out from the cassette case, and the retard roller system with the sheets remaining in a bundle state It is prevented from being sent out to the pair of separation rollers.
JP 2004-206362 A JP 2001-48362 A

  In the separation mechanism disclosed in Patent Document 2, since the separation pad is in close contact with the sheet, the sheet in contact with the separation pad is not fed. However, when a plurality of sheets are overlapped, there is still a possibility that sheets that are not in contact with the separation lid are sent out to the separation roller pair in a bundled state due to the frictional force between them.

  Here, when the two sheets are overlapped and fed to the retard roller type separation roller pair, the feeding of the sheet in contact with the retard roller side is prevented, so only one sheet is separated by the separation roller. Sent from a pair. However, when three or more sheets are fed into the separation roller pair in a bundled state, one sheet contacting the retard roller is prevented from being fed, but the other sheets Is in a bundle state due to the frictional force between them, and there is a risk of being sent out through the pair of separation rollers.

  In view of the above, the problem of the present invention is to limit the number of sheets fed to the retard roller type separation unit to two or less, so that the sheets can be reliably fed one by one. It is to propose a sheet feeding device.

In order to solve the above-described problem, a sheet feeding apparatus according to the present invention has a first sheet guide surface and a second sheet guide surface facing the first sheet guide surface, and stacks sheets such as checks to be fed. A sheet insertion portion that is inserted in a state, a pickup roller that is disposed on the first sheet guide surface side, and that feeds a sheet placed in the sheet insertion portion toward a sheet delivery opening, and the second sheet guide surface A hopper for pressing a sheet placed in the sheet insertion portion against the pickup roller, and a width of the sheet delivery opening of the sheet insertion portion is gradually reduced in the sheet delivery direction. It was the first sheet separating unit, the sheet the sheet separating path followed port feeding, and a separation pad disposed on the sheet separation passage A second sheet separating section, a sheet feeding roller disposed on the downstream side of the separation pad in the sheet separating path, and a third sheet separating section composed of a retard roller pressed against the sheet feeding roller. The sheet separation passage includes a linear passage portion extending in the direction of the first sheet guide surface, an inclined passage portion extending in a direction inclined toward the second sheet guide surface continuously from the linear passage portion, And a passage portion that extends continuously from the inclined passage portion while gradually increasing the passage width, and the separation pad is disposed so as to protrude into the inclined passage portion.

  In the present invention, the sheet inserted in the sheet insertion portion in the stacked state is sent out to the sheet separation passage by the pickup roller via the sheet delivery opening. Since the sheet delivery opening is a first sheet separation portion having a configuration in which the width gradually decreases in the delivery direction, the number of sheets fed out in a bundle state is limited by the sheet delivery opening. That is, by setting the opening width of the sheet delivery opening so that only a plurality of sheets can pass at the same time, only a few sheets at most from the stacked sheets can be picked up by the pickup roller through the sheet delivery opening. Sent out.

  In this way, only a few sheets at most are sent out to the sheet separation passage by the first sheet separation portion, and the sheets are further separated by the second sheet separation portion comprising the separation pad arranged in the sheet separation passage. Sent out. Since the first sheet separation unit separates the sheets into about several sheets or less, the separation pad reliably separates the sheets into two sheets or less, and only the two or less sheets are sent out. Accordingly, the sheet is separated into a single sheet in the third retard roller type third sheet separating section on the downstream side, and only one sheet is reliably fed out.

  Here, the sheet insertion portion and the sheet delivery port can be defined by a pair of first and second sheet guide surfaces arranged to face each other. In this case, the first sheet guide surface on the side from which the outer peripheral surface portion of the pickup roller protrudes is a plane extending linearly, and the tip surface portion of the second sheet guide surface in the sheet feeding direction is the first sheet guide surface. It can be set as the inclined surface inclined in the sheet guide surface side. The leading edge of the first and second sheet guide surfaces defines a sheet feeding opening having a tapered opening width, and the leading edge of the sheet fed by the pickup roller hits the inclined surface on the leading edge side of the second sheet guiding surface. Then, the sheet is sent out from the sheet delivery port to the sheet separation passage while the number of delivery is gradually reduced.

  In the second sheet separation unit, the separation pad is arranged on the surface of the separation pad so that the leading edge of the sheet sent out along the sheet separation path collides with an entry angle of less than 90 degrees. It is desirable. In this way, the leading edge of each sheet sent out in a bundled state hits the separation pad, and each sheet is dispersed in the feeding direction (separated separately), and the feeding is prevented. Therefore, only one sheet that is in direct contact with the pickup roller, or at most two sheets including the sheet, is sent out overcoming the frictional resistance of the separation pad. Accordingly, only two or less sheets can be reliably separated and sent to the third sheet separation unit. As a result, only one sheet is sent out from the third sheet separation unit of the retard roller system.

  Here, it is desirable that the separation pad is arranged so as to have a predetermined inclination angle with respect to the feeding direction of the sheet fed along the sheet separation path. More preferably, it is desirable that the inclination angle is an angle within a range of 10 degrees to 40 degrees. By providing this inclination angle, the sheets fed in a bundle state can be reliably separated into two or less sheets and sent out.

  Next, in addition to the above configuration, it is desirable that the frictional force between the sheet pressing surface of the hopper and the sheet is larger than the frictional force between the sheets. Since the sheet pressing surface of the hopper prevents the sheet inserted into the sheet insertion portion from being fed, only one sheet or a plurality of sheets on the pickup roller side can be fed from the sheet feeding port. In this way, if a so-called preliminary sheet separating portion formed by the sheet pressing surface is arranged, the number of sheets fed from the sheet feeding port to the sheet separating passage can be reduced. The number of sheets fed simultaneously to the three-sheet separation unit can be reliably reduced to two or less.

  Next, the sheet feeding device of the present invention can be used as a recording paper supply device in a printer or a copying machine. However, the sheet feeding device is used for a check reading device that handles small checks, bills, and the like that are easily sent out in a stacked state. Is suitable.

  In the sheet feeding apparatus according to the present invention, when the sheets are fed from the sheet feeding port of the sheet inserting unit in which the sheets are inserted in a stacked state, the number of sheets fed by the first sheet separating unit is limited to about a plurality of sheets, and thereafter The plurality of bundle-like sheets are separated in the pad-type second sheet separation unit and then fed into the retard roller type third separation unit. Since the sheet is fed to the pad-type second sheet separating unit in a state of being limited to about a plurality of sheets, the second sheet separating unit can reliably separate the sheet into two or less sheets, and three or more sheets are bundled. Thus, it is possible to avoid being fed into the third separation unit of the retard roller system. Therefore, the sheets can be reliably separated and sent out one by one through the third sheet separation unit.

  Hereinafter, an embodiment of a check reading apparatus provided with a sheet feeding apparatus to which the present invention is applied will be described with reference to the drawings.

  FIG. 1 is an external perspective view of a check reading apparatus according to the present embodiment. The check reading device 1 includes a main body case 2 and a lid case 3 placed on the upper side of the main body case 2, and each component is incorporated therein. The lid case 3 is formed with a conveyance path 5 for a check 4 (sheet) made of a narrow vertical groove having a U shape when viewed from above, and one end of the conveyance path 5 has a wide vertical width. The other end of the conveyance path 5 branches to the left and right, and the first and second check discharge sections 7 and 8 each have a wide vertical groove. It is connected to.

  The check 4 has a magnetic ink character 4c printed on the lower end portion of the surface 4a thereof. The front surface 4a has a predetermined pattern background with an amount, a payer, a number, a signature, and the like, and the back surface 4b has an endorsement column. The check 4 before reading stored in the check supply unit 6 in a vertically placed state is read along the conveyance path 5 while the magnetic ink characters 4c printed on the front surface 4a, the front image and the back image are read. It is done. Checks for which information has been normally read are printed on the first check after being printed on the end, and then are discharged to the first check discharge unit 7 where they are unreadable and read abnormally. The printing is distributed to the second check discharge unit 8 without being printed on the end printing.

  FIG. 2 is an explanatory diagram showing the internal structure of the check reading device 1. The check supply unit 6 is provided with a check delivery mechanism 10 for sending the check 4 inserted in a stacked state to the transport path 5 one by one. The check supply unit 6 and the check delivery mechanism 10 use the check supply mechanism 10 to check the check supply unit 6. A delivery device is configured (see FIG. 3).

  The conveyance path 5 includes an upstream conveyance path portion 21 connected to the check supply unit 6, a downstream conveyance path portion 23 connected to the first and second check discharge units 7 and 8, and a curve connecting the two. It is a U-shaped passage provided with a conveyance path portion 23.

  The transport mechanism 30 that transports the check 4 sent from the check supply unit 6 to the transport path 5 along the transport path 5 is pressed by the first to sixth transport rollers 31 to 36, and is driven by them. The first to sixth pressing rollers 41 to 46 and the conveying motor 37 for rotationally driving the first to sixth conveying rollers 31 to 36 are provided. The 1st-6th conveyance rollers 31-36 rotate in synchronization. As the conveyance motor 37, for example, a stepping motor is used.

  The first to third transport rollers 31 to 33 are respectively disposed at the upstream end of the upstream transport path portion 21, the middle position thereof, and the boundary position with the curved transport path portion 22. The fourth transport roller 34 is disposed at a downstream position in the curved transport path portion 22. The fifth and sixth transport rollers 35 and 36 are disposed at the middle position and the downstream end of the downstream transport path portion 23, respectively.

  Between the first and second transport rollers 31 and 32 in the upstream transport path portion 21, from the upstream side, a magnet 51 for magnetizing magnetic ink characters, a front-side contact image scanner 52 as a surface image reading means, and a back surface A back side contact image scanner 53 as an image reading means is arranged. A magnetic head 54 for reading magnetic ink characters is disposed between the second and third transport rollers 32 and 33, and a pressing roller 55 for pressing the check 4 against the head. Are confronting each other.

  A printing mechanism 56 for end printing is disposed between the fifth and sixth transport rollers 35 and 36 in the downstream transport path portion 23. The printing mechanism 56 can be moved between a printing position pressed by the check 4 and a standby position retracted from the printing position by a driving motor (not shown).

(Configuration of check feeding device)
FIG. 3 is a schematic configuration diagram showing a check delivery device including the check supply unit 6 and the check delivery mechanism 10.

  The check supply unit 6 is defined by a pair of left and right first check guide surfaces 11, a second check guide surface 12, and a bottom surface 13. The first check guide surface 11 is defined by a straight flat vertical surface. The second check guide surface 12 includes a parallel vertical surface portion 12a disposed in parallel to the first check guide surface 11 at a predetermined interval, and a front end of the parallel vertical surface portion 12a toward the first check guide surface 11 side. And an inclined vertical surface portion 12b inclined at an angle of less than 90 degrees. A check delivery port 14 whose opening width gradually decreases in the check delivery direction is defined by the tip portion of the first check guide surface 11 and the inclined vertical surface portion 12b of the second check guide surface 12.

  The check delivery mechanism 10 is configured as follows. First, a check pick-up roller 15 is disposed in a state in which the outer peripheral surface slightly protrudes from the rear end portion of the first check guide surface 11 of the check supply unit 6. The other second check guide surface 12 is formed with an opening (not shown) extending in the check feeding direction, through which a hopper 16 for pressing the check 4 against the pickup roller 15 can advance and retreat. It has become. For example, when the photo sensor (not shown) detects that the check 4 has been inserted into the check supply unit 6, the hopper 16 moves forward by a drive mechanism (not shown) and pulls the check 4 with a certain pressing force into the pickup roller 15. Can be pressed against.

  A friction plate 16 a made of a material having a high friction coefficient such as a cork plate is attached to the surface of the hopper 16. The surface of the friction plate 16a, that is, the check pressing surface 16b, is set so that the friction force between the check 4 and the check 4 is larger than the friction force between the checks.

  Next, the opening width of the tip opening 14a in the delivery direction of the check delivery port 14 is narrowed to a dimension that allows a plurality of checks 4 to pass simultaneously. A check separation passage 17 defined by a guide surface portion extending from the tips of the first check guide surface 11 and the second check guide surface 12 is formed continuously with the tip opening 14a. The check separation passage 17 has a linear passage portion 17a extending in the same direction as the first check guide surface 11, and an inclination extending continuously in a direction slightly inclined toward the second check guide surface 12 side. A passage portion 17 b and a passage portion 17 c extending continuously while the passage width gradually increases are provided, and the tip of the passage portion 17 c communicates with the upstream end of the transport path 5.

  The opening width of the straight passage portion 17 a is the same as the opening width of the tip opening 14 a of the check delivery port 14. The inclined passage portion 17b is inclined at a predetermined angle with respect to the linear passage portion 17a, and has an opening width slightly narrower than that of the linear passage portion 17a. This inclination angle is more preferably within an angle range of 10 degrees to 40 degrees in order to limit the number of checks 4 conveyed. A separation pad 18 is arranged on the guide surface portion extending from the second check guide surface 12 in the inclined passage portion 17b so as to extend in parallel with the first check guide surface 11. The inclination angle of the inclined passage portion 17b with respect to the linear passage portion 17a is equal to the angle of the surface of the separation pad 18 with respect to the feeding direction of the check 4 regulated by the inclined passage portion 17b and the linear passage portion 17a.

  The separation pad 18 is a rectangular plate having a constant thickness and substantially the same height as the inclined passage portion 17b, and the flat separation surface 18a blocks the half of the inclined passage portion 17b. It protrudes into 17b. Therefore, the tip of the check 4 sent out along the inclined passage portion 17b hits the separation surface 18a at an approach angle of 10 degrees to 40 degrees. The separation pad 18 is made of a material having a high friction coefficient, and is made of, for example, a rubber elastomer such as EPDM (ethylene-propylene-diene monomer) or EPT (ethylene-propylene-terpolymer).

  In the passage portion 17c on the downstream side of the separation pad 18, a check feeding roller 19 is disposed on the first check guide surface 11 side, and a retard roller 20 is disposed on the other side. The nip portion 19a of these rollers is set to be located at the center in the width direction of the passage portion 17c, and the retard roller 20 is pressed against the outer peripheral surface of the check feed roller 19 with a predetermined pressing force. The retard roller 20 is given a rotational load torque by a torque limiter 20a, and is restricted in rotation.

  The pickup roller 15 and the check delivery roller 19 are rotated by a delivery motor (not shown). The pickup roller 15 and the check delivery roller 19 start rotating simultaneously, and stop simultaneously when the tip of the check 4 reaches the roller pair of the first conveying roller 31 and the first pressing roller 41. The position of the check 4 is detected by a photo sensor (not shown). The check 4 sent out from the check supply unit 6 to the transport path 5 is transported along the transport path 5 by the transport mechanism 30.

(Operation of check feeding device)
4A to 4C are explanatory views showing the operation of the check feeding device. The check feeding operation will be described with reference to these drawings. A large number of checks 4 are inserted into the check supply unit 6 in a stacked state. As shown in FIG. 4A, when the check 4 is inserted, the hopper 16 moves forward and presses the check 4 against the pickup roller 15 with a constant pressing force. When the pickup roller 15 rotates in the arrow direction in this state, the check 4 is sent out toward the check delivery port 14.

  A friction plate 16a is attached to the surface of the hopper 16, the movement of the check group on the hopper 16 side is restricted, and only the check group on the pickup roller 15 side is fed out. Therefore, only the check group on the pickup roller 15 side of the check 4 in the check supply unit 6 is sent out by the preliminary separation unit comprising the friction plate 16a.

  Next, the opening width of the check delivery port 14 is gradually reduced in the delivery direction by the inclined vertical surface portion 12b defining one surface thereof. Accordingly, the tip of the check 4 to be sent on the side of the inclined vertical surface portion 12b is restricted in movement because the tip of the check 4 hits the inclined vertical surface portion 12b. Therefore, only a few check groups that can pass through the tip opening 14 a of the check delivery port 14 are sent out from the tip opening 14 a of the check delivery port 14 to the check separation passage 17. As described above, the first separation part A is formed by the check-out port 14 having a tapered shape, and the check group sent out by the first separation part A is limited to about several sheets at the maximum.

  Next, the check group fed into the check separation passage 17 collides with the separation surface 18a of the separation pad 18 at an approach angle within a range of 10 degrees to 40 degrees. As a result, about several checks 4 sent out in a bundle are scattered in the feeding direction by the separation surface 18a of the separation pad 18. Since the width of the passage on the leading end side in the delivery direction of the separation pad 18 is narrowed by the separation pad 18, only a maximum of two checks 4 can pass therethrough. Therefore, as shown in FIG. 4 (b), the check group sent out by the pickup roller 15 is in a state in which at most two checks are overlapped via the second check separation part B formed of the separation pad 18. It is fed out and fed into a third check separation section C comprising a nip portion 19 a of the check feed roller 19 and the retard roller 20.

  Of the two checks 4 fed to the nip portion 19a (third check separation portion C) of these rollers 19 and 20, the check 4 on the retard roller 20 side is restrained from being fed, and the opposite check is fed out. Only the check 4 in contact with the roller 19 side is fed out. That is, only one check 4 is sent out to the conveyance path 5. Since no more than two checks are fed into the third check separation unit C of the retard roller system, as shown in FIG. 4C, the checks 4 are surely separated one by one through the separation unit. Are sent one by one to the conveyance path 5.

  As described above, in the check reading apparatus 1 according to the present embodiment, the check 4 is surely sent out one by one from the check supply unit 6. Therefore, it is possible to avoid a situation in which the check 4 is overlapped and sent out and a reading failure or reading impossible state occurs. Further, it is possible to avoid the adverse effect that the checks 4 sent out in a stacked manner are jammed in the conveyance path 5 and the operation is stopped or interrupted.

  In this embodiment, the sheet feeding apparatus according to the present invention is applied to a check reading apparatus. The present invention is not limited to the check feeding device of the check reading device, and can be applied to a sheet feeding device for feeding various sheets one by one. For example, it can be used as a recording paper feeding device for feeding recording paper one by one in a printer, a copying machine, or the like.

1 is an external perspective view of a check reading apparatus to which the present invention is applied. It is explanatory drawing of the internal structure of a check reading apparatus. It is a schematic block diagram of the check delivery apparatus of a check reading apparatus. (A)-(c) is operation | movement explanatory drawing of a check delivery apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Check reading device, 2 Main body case, 3 Cover case, 4 Check, 5 Transport path, 6 Check supply part, 7 1st check discharge part, 8 2nd check discharge part, 10 Check delivery mechanism, 11 1st check guide surface , 12 Second check guide surface, 12a Parallel vertical surface portion, 12b Inclined vertical surface portion, 13 Bottom surface, 14 Check delivery port, 14a Tip opening, 15 Pickup roller, 16 Hopper, 16a Friction plate, 16b Check pressing surface, 17 Check Separation passage, 17a Straight passage portion, 17b Inclination passage portion, 17c Passage portion, 18 Separation pad, 18a Separation surface, 19 Check feed roller, 19a Nip portion, 20 retard roller, 20a Torque limiter, 21 Upstream conveyance passage portion , 22 Curved conveyance path part, 23 Downstream conveyance path part, 30 Conveyance mechanism, 31-36 Conveyance roller, 37 Conveyance motor, 41-46 Pressure roller, 51 Magnet, 52 Front side contact image scanner, 53 Back side contact image scanner, 54 Magnetic head, 55 Pressure roller, 56 Printing mechanism, A 1st check separation part, B 2nd check separation part, C 3rd check separation part

Claims (7)

A sheet insertion portion that has a first sheet guide surface and a second sheet guide surface facing the first sheet guide surface and inserts a sheet such as a check to be sent out in a stacked state;
A pickup roller disposed on the side of the first sheet guide surface for sending out the sheet placed in the sheet insertion portion toward a sheet delivery opening;
A hopper disposed on the second sheet guide surface side for pressing a sheet placed in the sheet insertion portion against the pickup roller;
A first sheet separation portion formed by gradually reducing the width of the sheet delivery port of the sheet insertion portion in the sheet delivery direction;
A second sheet separating section comprising a sheet separating passage following the sheet delivery port, and a separation pad disposed in the sheet separating passage;
It said sheet sheet feed roller arranged on the downstream side of the separation pad in the separation passage and having a third sheet separation portion consisting of the retard roller which is pressed against the sheet feed roller,
The sheet separation passage includes a linear passage portion extending in the direction of the first sheet guide surface, an inclined passage portion extending in a direction inclined toward the second sheet guide surface continuously from the linear passage portion, and A passage portion extending while gradually increasing the passage width continuously to the inclined passage portion;
The sheet feeding device according to claim 1, wherein the separation pad is disposed so as to protrude into the inclined passage portion . In claim 1,
It said first sheet separation unit, the sheet delivery apparatus characterized by being formed by the inclined surface sheet feeding direction of the distal end surface portion of the second sheet guide surface is inclined to the side of the first sheet guide surface. In claim 1 or 2,
The sheet feeding apparatus, wherein the separation pad is arranged on the surface of the separation pad so that the leading edge of the sheet fed along the sheet separation path collides with an approach angle of less than 90 degrees. In claim 3,
The sheet feeding apparatus, wherein the separation pad is arranged so that a surface of the separation pad has a predetermined inclination angle with respect to a feeding direction of the sheet fed along the sheet separation path. In claim 4,
The separation pad is arranged such that the surface of the separation pad has an inclination angle within a range of 10 degrees to 40 degrees with respect to a feeding direction of the sheet fed along the sheet separation path. Sheet feeding device. In any one of Claims 1 thru | or 5,
Sheet feeding apparatus, wherein the frictional force between the sheet pressing surface and the sheet of the hopper is greater than the frictional force between the sheets. A sheet feeding apparatus according to any one of claims 1 to 6,
A transport mechanism for magnetic ink characters and images are fed one by one from the sheet feeding device is a check that is printed, is transported along the transport path the reading means reading means or the image of the magnetic ink characters are arranged,
A check reading apparatus characterized by comprising:

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