Magnetic paper sheet detection device, paper sheet identification device, paper sheet processing device, and brush roller

Abstract

To provide a brush roller intentionally controlled in the aspect of piles such as length, shape, angle, and arrangement as well as a magnetic paper sheet detection device, a paper sheet identification device, and a paper sheet processing device including the brush roller.SOLUTION: Provided is a magnetic paper sheet detection device including: a magnetic sensor that detects a magnetic feature of paper sheets; and a brush roller disposed opposite a magnetic detection surface of the magnetic sensor to convey the paper sheets while pressing the paper sheets against the magnetic detection surface. The brush roller includes a roller body part and a brush part disposed on the peripheral surface of the roller body part. The brush part includes a base fabric disposed on the peripheral surface of the roller body part and composed of warps and wefts, and a plurality of piles protruding from the base fabric and woven into gaps of the base fabric formed by the warps and the wefts.SELECTED DRAWING: Figure 2B

Description

[Technical field]

[0001] The present disclosure relates to a paper sheet magnetic detection device, a paper sheet identification device, a paper sheet processing device, and a brush roller. [Background technology]

[0002] A paper sheet magnetic detection device that detects the magnetic characteristics of paper sheets generally has a structure that includes a magnetic sensor that detects the magnetic characteristics of paper sheets and a brush roller that is arranged opposite the magnetic detection surface of the magnetic sensor and rotates to transport the paper sheets while pressing them against the magnetic detection surface of the magnetic sensor.

[0003] As such a paper sheet magnetic detection device, Patent Document 1 discloses a magnetic head device for a paper sheet identification machine that reads magnetic information using a magnetic head provided on the transport surface of transported paper sheets to identify the paper sheets, and is characterized in that it comprises a first rotating body provided at a position opposite the magnetic head across the transport surface, bristles made of an elastic material that are planted on the outer circumferential surface of the first rotating body and have a length such that their tips contact the magnetic head, and a second rotating body that is provided coaxially with the first rotating body, has a diameter larger than the diameter of the first rotating body, and does not contact the magnetic head. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-138877 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional paper magnetic detection devices (magnetic head devices) such as that described in Patent Document 1, pile (hair) is planted on the roller main body (first rotating body) of the brush roller, and the hair is generally planted by electrostatic planting (electrodeposition planting).

[0006] When electrostatic flocking (electrodeposition flocking) is performed, first, an adhesive layer is placed on the surface of the roller body. Thereafter, the pile is ejected by static electricity so that the pile sticks into the adhesive layer disposed on the roller body. Then, the adhesive layer is cured to produce a brush roller having piles formed on the surface of the roller body.

[0007] When electrostatic flocking (electrodeposition flocking) is performed in this way, it is not possible to uniformly control the depth to which each pile penetrates the adhesive layer, and it is difficult to uniform the length of the pile protruding from the roller body. In other words, the electrostatic flocking (electrodeposition flocking) method has the problem that it is difficult to intentionally control the pile length. Furthermore, if the pile length cannot be intentionally controlled, the length of the pile protruding from the roller body will vary, resulting in a problem of inconsistent quality for each brush roller. In a paper sheet magnetic detection device using a brush roller, the clearance between the magnetic sensor and the brush funnel is set, but if a brush roller made by electrostatic flocking (electrodeposition flocking) is used as described above, the quality of each brush roller will not be consistent, so the clearance cannot be set uniformly and fine adjustments must be made individually. This causes a problem of complicated setting of the clearance between the magnetic sensor and the brush funnel.

[0008] The present disclosure has been made in consideration of the above problems, and an object of the present disclosure is to provide a brush roller in which the pile aspects such as length, shape, angle, arrangement, etc. are intentionally controlled, a paper sheet magnetic detection device, a paper sheet identification device, and a paper sheet processing device that are equipped with such a brush roller. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems and achieve the objective, (1) the paper sheet magnetic detection device disclosed herein is a paper sheet magnetic detection device having a magnetic sensor that detects the magnetic characteristics of paper sheets, and a brush roller that is arranged opposite the magnetic detection surface of the magnetic sensor and transports paper sheets by pressing them against the magnetic detection surface, wherein the brush roller has a roller main body and a brush portion arranged on the circumferential surface of the roller main body, and the brush portion is arranged on the circumferential surface of the roller main body and includes a base fabric composed of warp threads and weft threads, and a plurality of piles that protrude from the base fabric and are woven into gaps in the base fabric formed by the warp threads and the weft threads.

[0010] (2) In the paper magnetic detection device described in (1) above, the piles may include a first pile and a second pile of different types.

[0011] (3) In the paper magnetic detection device described in (1) or (2) above, when the brush roller is viewed from the axial direction of the rotation shaft, a distance L1 from a point on the first pile farthest from the rotation shaft to the rotation shaft may be shorter than a distance L2 from a point on the second pile farthest from the rotation shaft to the rotation shaft.

[0012] (4) In the paper magnetic detection device described in (2) or (3) above, the first pile and the second pile may have different shapes.

[0013] (5) In the paper magnetic detection device described in any one of (2) to (4) above, the first pile may have a crimped shape, and the second pile may have a straight shape.

[0014] (6) In the paper magnetic detection device described in any one of (2) to (4) above, the first pile may have a straight shape, and the second pile may have a crimped shape.

[0015] (7) In the paper magnetic detection device described in any one of (2) to (6) above, the first pile and the second pile may have different lengths.

[0016] (8) In the paper sheet magnetic detection device described in any of (2) to (7) above, when the brush roller is viewed from the axial direction of the rotation shaft, the first pile may be arranged so as to overlap with a line passing through a base portion of the first pile and the rotation shaft, and the second pile may be arranged so as to overlap with a line passing through a base portion of the second pile and the rotation shaft.

[0017] (9) In the paper magnetic detection device described in any one of (2) to (7) above, when the brush roller is viewed from the axial direction of the rotation shaft, the first pile may be formed at an angle to a line passing through the base portion of the first pile and the rotation shaft.

[0018] (10) In the paper magnetic detection device described in any one of (2) to (9) above, the first pile and the second pile may be regularly arranged on the base fabric.

[0019] (11) In the paper magnetic detection device described in (10) above, the first pile and the second pile may be regularly arranged in a rotation direction of the brush roller.

[0020] (12) In the paper sheet magnetic detection device described in any one of (2) to (11) above, the brush section may include a thread-like first continuous pile having a first end and a second end opposite the first end, and a thread-like second continuous pile having a third end and a fourth end opposite the third end, and the first continuous pile may form two first piles by having the first end and the second end pass through gaps in the different base fabrics and protrude from the base fabric, and the second continuous pile may form two second piles by having the third end and the fourth end pass through gaps in the different base fabrics and protrude from the base fabric.

[0021] (13) In the paper sheet magnetic detection device described in (12) above, when the brush roller is viewed from the axial direction of the rotating shaft, the distance from the first end to the rotating shaft and the distance from the second end to the rotating shaft are the same distance L1, and the distance from the third end to the rotating shaft and the distance from the fourth end to the rotating shaft are the same distance L2, the distance L1 is shorter than the distance L2, and the first continuous pile and the second continuous pile are arranged in the rotational direction of the brush roller.

[0022] (14) In the paper magnetic detection device described in (12) or (13) above, the first continuous pile and the second continuous pile may be arranged alternately in a rotation direction of the brush roller.

[0023] (15) A paper recognition device according to the present disclosure includes the paper magnetic detection device according to any one of (1) to (14) above.

[0024] (16) A paper sheet processing apparatus according to the present disclosure includes the paper sheet recognition device described in (15) above.

[0025] (17) A brush roller according to a fourth aspect of the present disclosure is a brush roller that is arranged opposite a magnetic detection surface of a magnetic sensor that detects the magnetic characteristics of paper sheets, and is used to press paper sheets against the magnetic detection surface to transport them, the brush roller comprising a roller main body portion and a brush portion arranged on a peripheral surface of the roller main body portion, the brush portion being characterized in that it includes a base fabric composed of warp threads and weft threads that are arranged on the peripheral surface of the roller main body portion, and a plurality of piles that protrude from the base fabric and are woven into gaps in the base fabric formed by the warp threads and the weft threads. Effect of the Invention

[0026] According to the present disclosure, it is possible to provide a brush roller in which the pile aspects such as length, shape, angle, arrangement, etc. are intentionally controlled, a paper sheet magnetic detection device, a paper sheet identification device, and a paper sheet processing device that are equipped with such a brush roller. [Brief description of the drawings]

[0027] [Figure 1A] FIG. 1A is a side view diagrammatically illustrating an example of a paper-sheet magnetic detection device according to a first embodiment of the present disclosure. [Figure 1B] FIG. 1B is a front view of the paper magnetic detection device shown in FIG. 1A. [Figure 2A] FIG. 2A is a schematic diagram of a cross section perpendicular to the rotation axis of a brush roller, illustrating an example of the brush roller according to the first embodiment of the present disclosure. [Figure 2B] FIG. 2B is an enlarged view of the dashed line portion of FIG. 2A. [Diagram 3] FIG. 3 is a plan view of an expanded base fabric included in the brush roller according to the first embodiment of the present disclosure. [Figure 4A] FIG. 4A is a schematic diagram showing another aspect of pile weaving in the brush roller according to the first embodiment of the present disclosure. [Figure 4B] FIG. 4B is a schematic diagram showing another aspect of pile weaving in the brush roller according to the first embodiment of the present disclosure. [Figure 5A] FIG. 5A is a schematic diagram showing another aspect of the continuous pile in the brush roller according to the first embodiment of the present disclosure. [Figure 5B] FIG. 5B is a schematic diagram showing another aspect of the continuous pile in the brush roller according to the first embodiment of the present disclosure. [Figure 6A] FIG. 6A is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modification 1 of the brush roller according to the first embodiment of the present disclosure. [Figure 6B] FIG. 6B is a schematic diagram focusing on one first pile and one second pile of the brush roller shown in FIG. 6A. [Figure 7A] FIG. 7A is a schematic diagram continuously showing states of the brush roller during position adjustment in the paper sheet magnetic detection device according to the first embodiment of the present disclosure, in which the distance from the rotation axis of the brush roller to the tip of each pile is equal. [Figure 7B]FIG. 7B is a graph showing the relationship between the position of the brush roller and the pressure applied to the magnetic detection surface in the paper sheet magnetic detection device according to the first embodiment of the present disclosure in which the distance from the rotation axis of the brush roller to the tip of each pile is equal. [Figure 8A] Figure 8A is a schematic diagram continuously showing the state of the brush roller during position adjustment in a paper sheet magnetic detection device of embodiment 1 of the present disclosure, in which the distance L1 from the rotation axis of the brush roller to the tip of the first pile is shorter than the distance L2 from the rotation axis of the brush roller to the tip of the first pile. [Figure 8B] FIG. 8B is a graph showing the relationship between the position of the brush roller and the pressure applied to the magnetic detection surface in the paper sheet magnetic detection device of the first embodiment including the brush roller of the first modified example. [Figure 9A] FIG. 9A is a plan view that illustrates an example of the positions of the first pile and the second pile when the base fabric is unfolded in the first modification of the brush roller according to the first embodiment of the present disclosure. [Figure 9B] FIG. 9B is a plan view that illustrates an example of the positions of the first pile and the second pile when the base fabric is unfolded in the first modification of the brush roller according to the first embodiment of the present disclosure. [Figure 10] FIG. 10 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modification 2 of the brush roller according to the first embodiment of the present disclosure. [Figure 11] FIG. 11 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of the third modified example of the brush roller according to the first embodiment of the present disclosure. [Figure 12] FIG. 12 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of the fourth modified example of the brush roller according to the first embodiment of the present disclosure. [Figure 13A] FIG. 13A is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modified Example 5 of the brush roller according to the first embodiment of the present disclosure. [Figure 13B] FIG. 13B is an enlarged view of the dashed line portion of FIG. 13A. [Figure 14A] FIG. 14A is a cross-sectional view that illustrates an example of a paper sheet recognition device according to the second embodiment of the present disclosure. [Figure 14B] FIG. 14B is a plan view of the upper unit of the bill validator shown in FIG. 14A, seen from below. [Figure 15A] FIG. 15A is a perspective view that illustrates an example of a paper sheet processing apparatus according to a third embodiment of the present disclosure. [Figure 15B] FIG. 15B is a cross-sectional view that illustrates an example of the internal structure of the paper sheet processing apparatus illustrated in FIG. 15A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, embodiments of a magnetic detection device, a paper sheet recognition device, and a paper sheet processing device according to the present disclosure will be described with reference to the drawings. In the following, the present disclosure will be described using as examples a paper sheet processing device for banknotes, a paper sheet recognition device built into the paper sheet processing device, and a paper sheet magnetic detection device used in the paper sheet recognition device. The target of the paper sheet processing device, paper sheet identification device, and paper sheet magnetic detection device of the present disclosure is not limited to banknotes, but may be any paper sheet having magnetic characteristics, such as checks, gift certificates, bills, documents, securities, and card-like media.

[0029] (Embodiment 1) FIG. 1A is a side view diagrammatically illustrating an example of a paper-sheet magnetic detection device according to a first embodiment of the present disclosure. FIG. 1B is a front view of the paper magnetic detection device shown in FIG. 1A. The paper sheet magnetic detection device 1 shown in Figures 1A and 1B is equipped with a magnetic sensor 2 having a magnetic detection surface 2a that detects magnetic characteristics of paper sheets, such as magnetic information and magnetic patterns contained in banknotes, and a brush roller 50 that is arranged opposite the magnetic detection surface 2a of the magnetic sensor 2 and presses the banknote against the magnetic detection surface 2a to transport it. 1A and 1B, the shaft 3 may be disposed at the center of the roller main body 51. Furthermore, as shown in FIG. 1B, in the paper sheet magnetic detection device 1, a plurality of brush rollers 50 may be disposed consecutively in the longitudinal direction of the shaft 3. The brush roller 50 rotates to press the bill against the magnetic detection surface 2a and transport the bill in a predetermined direction. The brush roller 50 is also one embodiment of the brush roller of the present disclosure.

[0030] An example of the magnetic sensor 2 is a magnetic line sensor having a plurality of magnetic detection elements in the main scanning direction. As the magnetic detection element, a differential type magnetic detection element can be used that outputs the change in magnetic flux density of the object to be detected as a signal. Specific examples include a magnetoresistance element (MR element), a fluxgate (FG element), and a magnetic impedance (MI element).

[0031] Next, the brush roller 50 will be described in detail. FIG. 2A is a schematic diagram of a cross section perpendicular to the rotation axis of a brush roller, illustrating an example of the brush roller according to the first embodiment of the present disclosure. FIG. 2B is an enlarged view of the dashed line portion of FIG. 2A. In addition, in FIG. 2A, for convenience of explanation, the space in which the axis 3 is disposed is not shown (that is, the space in which the axis 3 is disposed is shown as if it were filled). The brush roller 50 shown in FIG. 2A includes a roller body 51 and a brush portion 52 disposed on the circumferential surface of the roller body 51. In FIG. 2A, the rotation direction of the brush roller 50 is indicated by the symbol "r." The rotation axis around which the brush roller 50 rotates is indicated by the symbol "O." Note that in this specification, the "rotation axis" refers to a virtual axis around which the brush roller rotates. As shown in FIG. 2B, the brush portion 52 is arranged on the peripheral surface of the roller body portion 51 and includes a base fabric 53 composed of warp threads 53a and weft threads 53b, and a plurality of piles 54 protruding from the base fabric 53 and woven into gaps S of the base fabric 53 formed by the warp threads 53a and the weft threads 53b.

[0032] As shown in FIG. 2B, two adjacent piles 54 may be formed of a continuous pile 55 in the form of a continuous thread. In other words, the thread-like continuous pile 55 has a first end 55e1 and a second end 55e2 opposite the first end 55e1, and the continuous pile 55 may form two piles 54 by the first end 55e1 and the second end 55e2 passing through gaps S between different base fabrics 53 and protruding from the base fabric 53.

[0033] In the brush roller 50, the brush portion 52 is formed by weaving the pile 54 into the base fabric 53. Therefore, the length of the pile 54 (in FIG. 2B, the symbol “L 54 ") can be made constant. In other words, the length of the pile 54 can be intentionally controlled. Therefore, when manufacturing the brush rollers 50, differences between individual brush rollers are unlikely to occur, and the quality of the brush rollers can be stabilized. Therefore, in the paper sheet magnetism detection device 1, the clearance between the magnetic sensor and the brush funnel is likely to be in an optimal range simply by setting the clearance to a preset range. This facilitates fine adjustment for each brush roller when setting the clearance between the magnetic sensor and the brush roller. In this specification, the "pile length" refers to the linear distance from the base of the pile protruding from the base fabric to the tip of the pile.

[0034] The form of the warp threads 53a and weft threads 53b constituting the base fabric 53 is not particularly limited, and may be a single thread, twisted thread, or the like.

[0035] The material of the warp threads 53a and the weft threads 53b may be non-conductive fibers such as nylon, rayon, polyester, and the like.

[0036] The warp threads 53a and the weft threads 53b may be the same type of thread or different types of thread.

[0037] The form of the pile 54 is not particularly limited, and may be a single thread, a twisted thread, or the like.

[0038] The material of the pile 54 may be non-conductive fibers such as nylon, rayon, polyester, and the like.

[0039] The pile 54 may be a single type of pile, or may be made up of a plurality of piles of different types. In this specification, "different types" refers not only to differences in pile material and pile formation method (extrusion molding, spinning, etc.), but also to differences in any one aspect such as pile length, pile thickness, pile shape (described below), pile surface condition, etc.

[0040] Pile 54 Length L 54 can be set appropriately according to the size of the brush roller 50, and may be, for example, 2 to 6 mm, 2 to 4 mm, or 4 to 6 mm.

[0041] The thickness of the pile 54 may be, for example, 0.5 to 100 D (denier), or 15 to 25 D (denier).

[0042] The pile 54 shown in FIGS. 2A and 2B has a straight shape, but the pile 54 may have a curved shape or a crimped shape. A straight shape means a straight line, without any bends. The curved shape means an arc shape. The curvature may be constant or may vary partially. By crimped shape is meant a finely wavy, crimped shape.

[0043] The surface shape of the pile 54 may be smooth or may be uneven.

[0044] FIG. 3 is a plan view of an expanded base fabric included in the brush roller according to the first embodiment of the present disclosure. An arrow r in FIG. 3, piles 54 are regularly arranged in base fabric 53 included in brush roller 50. More specifically, when unfolded base fabric 53 is viewed in a plan view, piles 54 may be evenly arranged so as to be located at the vertices of a rectangular lattice. When the piles 54 are arranged in such a regular manner, the pressure applied to the banknotes 40 when they are pressed against the magnetic detection surface 2a and conveyed can be made constant. In the brush roller of the present disclosure, when the unfolded base fabric is viewed in a plan view, the piles may be evenly arranged so as to be located at the vertices of a square lattice. In addition, in the brush roller of the present disclosure, when the unfolded base fabric is viewed in a plan view, the piles may be arranged in an oblique direction with respect to the rotation direction r. In addition, in the brush roller of the present disclosure, when the unfolded base fabric is viewed in a plan view, the piles may be arranged randomly.

[0045] In the brush roller 50, the base fabric 53 may be formed by plain weave, multiple plain weave, warp staggered plain weave, hollow feather plain weave, twill weave, multiple twill weave, or the like.

[0046] In the base fabric 53 shown in FIG. 3, the continuous pile 55 is arranged along the rotation direction r, and the line connecting the tips of two piles 54 that make up one continuous pile 55 coincides with the rotation direction r. However, in the brush roller of the present disclosure, the continuous pile 55 is arranged along a direction perpendicular to the rotation direction r, and the line connecting the tips of the two piles 54 that make up one continuous pile 55 may coincide with the direction perpendicular to the rotation direction r. In addition, the line connecting the tips of two piles 54 that form one continuous pile 55 may be oblique to the rotation direction r.

[0047] In the brush roller 50, the density of the pile 54 formed on the base fabric 53 is 10,000 to 40,000 fibers / inch. 2 may be also possible.

[0048] In the brush roller 50, the distance between the two nearest piles 54 may be 0.005 to 0.01 inch (0.127 to 0.254 mm).

[0049] 2B, in the brush roller 50, the continuous pile 55 crosses one warp thread 53a so as to pass under the warp thread 53a (on the roller body 51 side), but in the brush roller of the present disclosure, the continuous pile 55 may cross two or more warp threads 53a. Such an embodiment will be described below. 4A and 4B are schematic diagrams showing another aspect of pile weaving in the brush roller according to the first embodiment of the present disclosure.

[0050] As shown in FIG. 4A, in the brush roller 50a, the continuous pile 55 passes under (on the roller body 51 side of) two adjacent warp threads 53a, and a first end 55e1 and a second end 55e2 protrude from gaps S1 and S2 formed beside the warp threads 53a, thereby forming two piles 54. In the brush roller of the present disclosure, the continuous pile may pass under two or more warp threads (on the roller body portion 51 side) to form a pile.

[0051] As shown in FIG. 4B, in a brush roller 50b, continuous pile 55 may be arranged so as to run above and below three warp threads 53a arranged in sequence to form pile . This aspect will now be described in more detail. In FIG. 4B, the warp yarns 53a intersecting with the continuous pile 55 are arranged in the order of warp yarn 53a1, warp yarn 53a2, and warp yarn 53a3 from the left. The continuous pile 55 contacts the lower part of warp thread 53a1, the upper part of warp thread 53a2, and the lower part of warp thread 53a3, and forms two piles 54 by having a first end 55e1 and a second end 55e2 protruding from the gap S1 to the left of warp thread 53a1 and the gap S2 to the right of warp thread 53a3, respectively. In the brush roller of the present disclosure, the continuous pile may be arranged so as to alternately contact the upper and lower parts of three or more warp threads to form the pile.

[0052] As shown in FIG. 2B above, in the brush roller 50, the tip of the pile 54 and the end of the continuous pile 55 are aligned, but in the brush roller of the present disclosure, the tip of the pile may be in a loop shape. Such an embodiment is described below. 5A and 5B are schematic diagrams showing another aspect of the continuous pile in the brush roller according to the first embodiment of the present disclosure.

[0053] As shown in FIG. 5A, in a brush roller 50c, continuous pile 55a may protrude from one gap in base fabric 53 to form loop pile 56 having a looped tip. More specifically, the two root portions 57 of one loop pile 56 may protrude from the same gap S formed in the base fabric 53.

[0054] As shown in FIG. 5B, in a brush roller 50d, continuous pile 55b may protrude from two gaps in base fabric 53 to form loop pile 58 having a looped tip. To explain in more detail, the two root portions 59a and 59b of one loop pile 58 may protrude from separate gaps S1 and S2 formed in the base fabric 53, and their tips may be looped.

[0055] As shown in FIG. 2B above, in the brush roller 50, the continuous pile 55 forms two piles 54, but in the brush roller of the present disclosure, each pile may be formed independently. Such an embodiment can be formed, for example, by arranging a single pile so as to be tied to the warp and / or weft of the base fabric. When each pile is composed of a single pile, the piles may be arranged regularly. For example, the piles may be arranged so that they are positioned at the vertices of a rectangular or square grid. The piles may also be arranged randomly.

[0056] In the brush roller of the present disclosure, multiple types of pile may be mixed, such as continuous pile, loop pile, and single pile.

[0057] A method for manufacturing the brush roller according to the first embodiment of the present disclosure includes a method in which a base fabric having pile formed thereon is disposed on the peripheral surface of the roller body and fixed thereto with an adhesive or the like.

[0058] The base fabric having pile formed thereon can be produced, for example, by the following method. First, a base fabric composed of warp threads and weft threads is prepared. Next, the pile precursor yarn is sewn into the base fabric to form a pile-like material that protrudes from the base fabric and has a looped tip. At this time, in order to prevent the pile precursor yarn from fraying, the pile precursor yarn may be fixed with an adhesive or the like, or the pile precursor yarn may be fixed with a reinforcing yarn. The looped portion of the pile material is then cut to give a protruding portion of a predetermined length, thereby forming the pile. It is also possible to use the pile material with a looped tip as it is without cutting it, as a loop pile. In this manner, a base fabric having pile formed thereon can be formed.

[0059] It is also possible to produce two pieces of pile-formed base fabric at once by placing two pieces of base fabric one above the other, sewing the pile precursor yarn into the upper and lower base fabrics in turn, and then cutting the pile precursor yarn in the middle between the upper and lower base fabrics.

[0060] Next, a first modified example of the brush roller according to the first embodiment of the present disclosure will be described. Variation example 1 of the brush roller according to embodiment 1 of the present disclosure differs from brush roller 50 in that the piles constituting the brush roller include first and second piles of different types, and when the brush roller is viewed in the axial direction of the rotation shaft, the distance L1 from the point on the first pile farthest from the rotation shaft to the rotation shaft is shorter than the distance L2 from the point on the second pile farthest from the rotation shaft to the rotation shaft.

[0061] FIG. 6A is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modification 1 of the brush roller according to the first embodiment of the present disclosure. For ease of explanation, FIG. 6A does not show the space in which the axes are arranged (that is, the axes are shown as if the space in which they are arranged is filled). Brush roller 150 shown in FIG. 6A includes roller body 151 and brush portion 152 disposed on the circumferential surface of roller body 151. Brush roller 150 shown in FIG. The brush portion 152 is arranged on the peripheral surface of the roller main body portion 151 and may include a base fabric 153 composed of warp threads and weft threads, and a plurality of piles 154 protruding from the base fabric 153 and woven into gaps in the base fabric 153 formed by the warp threads and weft threads. The pile 154 also includes a first pile 161 and a second pile 162 that are different in type.

[0062] FIG. 6B is a schematic diagram focusing on one first pile and one second pile of the brush roller shown in FIG. 6A. 6B, when the brush roller 150 is viewed from the axial direction of the rotation axis O, the first pile 161 may be arranged so as to overlap with a straight line α passing through a root portion 163 of the first pile 161 and the rotation axis O, and the second pile 162 may be arranged so as to overlap with a straight line β passing through a root portion 164 of the second pile 162 and the rotation axis O. In this specification, the straight lines passing through the root portions of the piles and the rotation axis are all imaginary lines. In the brush roller 150 shown in FIG. 6B, the length L of the first pile 161 is 161 is the length L of the second pile 162 162 is shorter than. Therefore, the point P on the first pile 161 that is the furthest from the rotation axis O 161 The distance L1 from the rotation axis O to the point P on the second pile 162 that is the furthest from the rotation axis O is 162 , which is shorter than the distance L2 to the rotation axis O.

[0063] As described above, in the paper sheet magnetic detection device 1 having a brush roller 50 in which a brush portion 52 is formed by weaving pile 54 into a base fabric 53, even if the distance from the rotation axis of the brush roller to the tip of each pile is equal, it is easy to fine-tune each brush roller when setting the clearance between the magnetic sensor and the brush funnel. Furthermore, in a paper sheet magnetic detection device including a brush roller 150 in which the distance L1 is shorter than the distance L2, fine adjustment for each brush roller becomes easier when setting the clearance between the magnetic sensor and the brush roller.

[0064] Before explaining why fine adjustments can be easily made for each brush roller when setting the clearance between the magnetic sensor and the brush roll in a paper sheet magnetic detection device equipped with a brush roller 150, we will explain the relationship between the position adjustment of the brush roller 50 in a paper sheet magnetic detection device 1 equipped with brush rollers 50 with a constant pile length and the pressure applied to the magnetic detection surface.

[0065] FIG. 7A is a schematic diagram continuously showing states of the brush roller during position adjustment in the paper sheet magnetic detection device according to the first embodiment of the present disclosure, in which the distance from the rotation axis of the brush roller to the tip of each pile is equal. In FIG. 7A, the distance indicated by the symbol “D0” means the distance from the rotation axis O of the brush roller 50 to the tip of the pile 54. In FIG. 7A, the distance indicated by the symbol "d" refers to the distance from the pile 54 to the magnetic detection surface 2a, or the distance pressed from the state in which the pile 54 of the brush roller 50 is in contact with the magnetic detection surface 2a.

[0066] 7A(a) shows a state in which the pile 54 of the brush roller 50 is not in contact with the magnetic detection surface 2a in the paper sheet magnetic detection device 1. In this case, the distance from the rotation axis O of the brush roller 50 to the magnetic detection surface 2a is D0+d. 7A(b) shows a state in which the pile 54 of the brush roller 50 is just in contact with the magnetic detection surface 2a in the paper sheet magnetic detection device 1. In this case, the distance from the rotation axis O of the brush roller 50 to the magnetic detection surface 2a is D0. 7A(c) shows a state in which the pile 54 of the brush roller 50 is in contact with and pressed against the magnetic detection surface 2a in the paper sheet magnetic detection device 1. In this case, the distance from the rotation axis O of the brush roller 50 to the magnetic detection surface 2a is D0-d. In the paper sheet magnetic detection device 1, as shown in (a) to (c) of FIG. 7A, the brush roller 50 is moved to the magnetic detection surface 2a side, and the position of the brush roller 50 is adjusted.

[0067] Here, a description will be given of changes in pressure applied to the magnetic detection surface when the brush roller 50 is moved in the order of (a), (b), and (c) in FIG. 7A. FIG. 7B is a graph showing the relationship between the position of the brush roller and the pressure applied to the magnetic detection surface in the paper sheet magnetic detection device according to the first embodiment of the present disclosure in which the distance from the rotation axis of the brush roller to the tip of each pile is equal.

[0068] In FIG. 7B, the vertical axis indicates the distance between the rotation axis of the brush roller and the magnetic detection surface, and the horizontal axis indicates the pressure applied to the magnetic detection surface. The distance between the rotation shaft of the brush roller and the magnetic detection surface is shown as a relative distance when the distance D0 in the state of FIG. 7A(b) is used as a reference.

[0069] First, when the brush roller 50 is in the position (a) of Figure 7A, the distance between the rotation axis O of the brush roller 50 and the magnetic detection surface 2a is D0+d (the area shown in (a) of Figure 7B), and since the pile 54 and the magnetic detection surface 2a are not in contact, the pressure applied to the magnetic detection surface 2a is 0.

[0070] Next, when the brush roller is in the position of FIG. 7A(b), the distance between the rotation axis O of the brush roller 50 and the magnetic detection surface 2a is D0, and the multiple piles 54 are uniformly in contact with the magnetic detection surface 2a, so that the pressure applied to the magnetic detection surface 2a is P1-1 It becomes.

[0071] Next, when the brush roller 50 is in the position (c) of Figure 7A, the distance between the rotation axis O of the brush roller 50 and the magnetic detection surface 2a is D0-d (the area shown in (c) of Figure 7B), the pile 54 is pressed against the magnetic detection surface 2a, and the pressure applied to the magnetic detection surface increases rapidly as the distance between the rotation axis O of the brush roller 50 and the magnetic detection surface 2a becomes shorter.

[0072] The brush roller 50 is positioned by adjusting the above-mentioned -d. However, when adjusting -d, the pressure applied to the magnetic detection surface 2a changes suddenly, so that it may be difficult to adjust the position.

[0073] Next, the relationship between the position adjustment of the brush roller 150 in the paper sheet magnetic detection device including the brush roller 150 including the first pile 161 and the second pile 162 and the pressure applied to the magnetic detection surface will be described.

[0074] Figure 8A is a schematic diagram continuously showing the state of the brush roller during position adjustment in a paper sheet magnetic detection device of embodiment 1 of the present disclosure, in which the distance L1 from the rotation axis of the brush roller to the tip of the first pile is shorter than the distance L2 from the rotation axis of the brush roller to the tip of the second pile. In FIG. 8A, the distance indicated by the symbol “D0” is the distance from the rotation axis O of the brush roller 150 to the tip of the second pile 162. In FIG. 8A, the distance indicated by the symbol "d" means the distance from the second pile 162 to the magnetic detection surface 2a. In FIG. 8A, the distances indicated by the symbols "d1" and "d2" refer to the distance pressed from the state in which the second piles 162 of the brush roller 150 are in contact with the magnetic detection surface 2a.

[0075] 8A(a) shows a state in which the first pile 161 and the second pile 162 of the brush roller 150 are not in contact with the magnetic detection surface 2a in the paper sheet magnetic detection device 101. In this case, the distance from the rotation axis O of the brush roller 150 to the magnetic detection surface 2a is D0+d. 8A(b) shows a state in which the first pile 161 of the brush roller 150 is not in contact with the magnetic detection surface 2a and the second pile 162 is just in contact with the magnetic detection surface 2a in the paper sheet magnetic detection device 101. In this case, the distance from the rotation axis O of the brush roller 150 to the magnetic detection surface 2a is D0. 8A(c) shows a state in which the first pile 161 of the brush roller 150 is in contact with the magnetic detection surface 2a in the paper sheet magnetic detection device 101. The second pile 162 is in contact with the magnetic detection surface 2a so as to be pressed against the magnetic detection surface 2a. In this case, the distance from the rotation axis O of the brush roller 150 to the magnetic detection surface 2a is D0-d1. 8A(d) shows a state in which the first pile 161 and the second pile 162 of the brush roller 150 are in contact with and pressed against the magnetic detection surface 2a in the paper sheet magnetic detection device 101. In this case, the distance from the rotation axis O of the brush roller 150 to the magnetic detection surface 2a is D0-d2. In the paper sheet magnetic detection device 101, as shown in (a) to (d) of FIG. 8A, the brush roller 150 is moved to the magnetic detection surface 2a side, and the position of the brush roller 150 is adjusted.

[0076] Here, a description will be given of changes in pressure applied to the magnetic detection surface when the brush roller 150 is moved in the order of (a), (b), (c), and (d) in FIG. 8A. FIG. 8B is a graph showing the relationship between the position of the brush roller and the pressure applied to the magnetic detection surface in the paper sheet magnetic detection device of the first embodiment including the brush roller of the first modified example.

[0077] In FIG. 8B, the vertical axis indicates the distance between the rotation axis of the brush roller and the magnetic detection surface, and the horizontal axis indicates the pressure applied to the magnetic detection surface. The distance between the rotation shaft of the brush roller and the magnetic detection surface is shown as a relative distance when the distance D0 in the state of FIG. 8A(b) is used as a reference.

[0078] First, when the brush roller 150 is in the position (a) of Figure 8A, the distance between the rotation axis O of the brush roller 150 and the magnetic detection surface 2a is D0 + d (the area shown in (a) of Figure 8B), and since the pile 54 and the magnetic detection surface 2a are not in contact, the pressure applied to the magnetic detection surface is 0.

[0079] Next, when the brush roller 150 is in the position of (b) in FIG. 8A, the distance between the rotation axis O of the brush roller 150 and the magnetic detection surface 2a is D0, and the second pile 162 contacts the magnetic detection surface 2a, so that the pressure applied to the magnetic detection surface 2a is P 2-1 It becomes.

[0080] When the brush roller 150 is in the position shown in FIG. 8A(b), only the second pile 162 contacts the magnetic detection surface 2a. 2-1 is the pressure (i.e., P 1-1 ) lower.

[0081] Next, when the brush roller 150 is in the position of (c) in FIG. 8A, the distance between the rotation axis O of the brush roller 150 and the magnetic detection surface 2a is D0-d1 (area (c) in FIG. 8A), and the first pile 161 and the second pile 162 contact the magnetic detection surface 2a, so that the pressure applied to the magnetic detection surface 2a is P 2-2 It becomes. Between the distance D0 and the distance D0-d1, only the second pile 162 applies pressure to the magnetic detection surface 2a. Therefore, the pressure P 2-1 Pressure P 2-2 The changes up to now have been gradual.

[0082] Next, when the brush roller 150 is in the position (d) of Figure 8A, the distance between the rotation axis O of the brush roller 150 and the magnetic detection surface 2a is D0-d2 (area (d) of Figure 8A), and the first pile 161 and the second pile 162 come into contact with and are pressed against the magnetic detection surface 2a, so that the pressure applied to the magnetic detection surface 2a increases suddenly.

[0083] The brush roller 150 is positioned by adjusting the above-mentioned -d1 or -d2. When -d1 is adjusted, the pressure applied to the magnetic detection surface 2a changes gradually, making it easy to adjust the position. For this reason, in the paper sheet magnetic detection device 101 equipped with the brush roller 150, fine adjustment for each brush roller becomes easier when setting the clearance between the magnetic sensor and the brush roller.

[0084] Next, the reason why the paper sheet magnetism detection device 101 equipped with the brush roller 150 can prevent a decrease in output of the magnetic sensor while reducing the conveyance resistance will be described. For example, if the piles arranged on the brush roller are of a uniform length, the pressure applied when the brush roller presses the banknote against the magnetic detection surface of the magnetic sensor will be uniform, but the transport resistance when the banknote is transported between the brush roller and the magnetic detection surface is likely to be high. One way to prevent this is to uniformly shorten the length of the pile; however, in this case, the pressure pressing the bills against the magnetic detection surface will be reduced, leading to a decrease in the output of the magnetic sensor.

[0085] However, since the brush roller 150 includes the first pile 161 and the second pile 162 that are different in length, the pressure applied when the brush roller 150 presses the banknote 40 against the magnetic detection surface 2a of the magnetic sensor 2 is lower. Therefore, the transport resistance when the banknote is transported between the brush roller and the magnetic detection surface can be reduced.

[0086] One possible method for reducing the transport resistance is to lower the pile density. However, in this case, the piles become more likely to collapse and banknotes become more likely to slip between the piles. However, when the banknotes 40 are transported by the first pile 161 and the second pile 162, the first pile 161 acts as a support and can prevent the second pile 162 from falling over. Also, the banknotes 40 can be prevented from slipping between the second piles 162. For these reasons, the paper sheet magnetic detection device 101 can firmly press the paper money against the magnetic detection surface, and can prevent a drop in the output of the magnetic sensor.

[0087] The distance L1 and the distance L2 may be appropriately determined depending on the size of the paper sheet magnetic detection device 101, the size of the brush roller 150, etc., and for example, the distance L1 may be about 17.5 mm, and the distance L2 may be about 18.0 mm.

[0088] The first piles 161 and the second piles 162 may be arranged regularly on the base fabric 153 . In addition, the first piles 161 and the second piles 162 may be arranged regularly in the rotation direction r of the brush roller 150. In addition, "the first piles and the second piles are regularly arranged in the rotation direction of the brush roller" means that N first piles and M second piles are alternately arranged in the rotation direction of the brush roller. N is a natural number equal to or greater than 1, and M is a natural number equal to or greater than 1. N and M may be the same, or N and M may be 1. For example, when N and M are 2 or more, an area where a plurality of first piles are successively arranged and an area where a plurality of second piles are successively arranged are alternately arranged in the rotation direction of the brush roller. Furthermore, when N and M are 1, one first pile and one second pile are alternately arranged in the rotation direction of the brush roller. By arranging in this manner, uneven distribution of the second piles can be prevented. For example, if the second pile is unevenly distributed, the transport resistance is likely to be high in that area when the banknotes are transported between the brush roller and the magnetic detection surface. However, if the first pile and the second pile are regularly arranged in the rotation direction of the brush roller, the transport resistance can be reduced more evenly. In the brush roller of the present disclosure, the first piles and the second piles may be arranged randomly.

[0089] An example of the arrangement of the first piles and the second piles will be described below with reference to the drawings. 9A and 9B are plan views each showing a schematic example of an arrangement position of the first pile and the second pile when the base fabric is unfolded in the first modification of the brush roller according to the first embodiment of the present disclosure.

[0090] As shown in FIG. 9A, in the brush roller 150, when the base fabric 153 is unfolded, the first piles 161 and the second piles 162 are arranged alternately at equal intervals in the rotation direction r of the brush roller 150, the first piles 161 are arranged at equal intervals in a row in a direction perpendicular to the rotation direction r of the brush roller 150, and the second piles 162 are arranged at equal intervals in a row in a direction perpendicular to the rotation direction r of the brush roller 150. In other words, in the rotation direction r of the brush roller 150, the rows of the first piles 161 and the rows of the second piles 162 may be alternately arranged at equal intervals. When the first pile 161 and the second pile 162 are arranged in this manner, unevenness in the pressure applied when the banknotes 40 are pressed against the magnetic detection surface 2a is less likely to occur.

[0091] In the brush roller of the present disclosure, the row of first piles 161 and the row of second piles 162 as shown in FIG. 9A may be disposed obliquely with respect to the rotation direction r.

[0092] In the brush roller of the present disclosure, the warp threads constituting the base fabric 153 may be formed perpendicular to the rotation direction r, parallel to the rotation direction r, or obliquely. The same is true for the weft threads constituting the base fabric 153.

[0093] As shown in FIG. 9B , in the brush roller 150, when the base fabric 153 is unfolded, the first piles 161 and the second piles 162 are alternately arranged at equal intervals in the rotation direction r of the brush roller 150, and the first piles 161 and the second piles 162 may be alternately arranged at equal intervals in a direction perpendicular to the rotation direction r of the brush roller 150. In other words, the first piles 161 and the second piles 162 may be arranged alternately so as to be located at the vertices of a rectangular lattice. Note that the first piles 161 and the second piles 162 may be arranged alternately so as to be located at the vertices of a square lattice. When the first pile 161 and the second pile 162 are arranged in this manner, unevenness in the pressure applied when the banknotes 40 are pressed against the magnetic detection surface 2a is less likely to occur.

[0094] In the brush roller 150 shown in FIG. 9B, the first piles 161 and the second piles 162 are arranged alternately so as to be located at the vertices of a rectangular lattice, and the sides of the rectangular lattice are perpendicular or parallel to the rotation direction r, but the first piles 161 and the second piles 162 may be arranged so that the sides of the rectangular lattice are diagonal to the rotation direction r.

[0095] As a manufacturing method of such a brush roller 150, a method in which a base fabric on which the first pile and the second pile are formed is arranged on the peripheral surface of the roller main body and fixed with an adhesive or the like can be mentioned. The first pile and the second pile may be formed on the base fabric by, for example, the following method. First, a precursor yarn for a first pile having a short length is sewn into a base fabric, and the precursor yarn for a first pile is cut at a predetermined position to form the first pile. Next, a second pile precursor yarn for producing a longer second pile is sewn into the base fabric, and the second pile precursor yarn is cut at a predetermined position to form the second pile. In this manner, a base fabric having a first pile and a second pile formed thereon can be manufactured.

[0096] In addition, in variant example 1 of the brush roller according to embodiment 1 of the present disclosure, the piles constituting the brush roller include first and second piles of different types, and when the brush roller is viewed from the axial direction of the rotation shaft, the distance L1 from the point on the first pile farthest from the rotation shaft to the rotation shaft is shorter than the distance L2 from the point on the second pile farthest from the rotation shaft to the rotation shaft, so long as this is not limited to the above configuration. Another aspect of the brush roller according to the first embodiment of the present disclosure will now be described.

[0097] FIG. 10 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modification 2 of the brush roller according to the first embodiment of the present disclosure. For convenience of explanation, only one first pile and one second pile are shown in FIG. As shown in FIG. 10, in a brush roller 150a, first piles 161a may be in a crimped shape, and second piles 162a may be in a straight shape.

[0098] Furthermore, when the brush roller 150a is viewed in the axial direction of its rotation axis O, the first pile 161a is arranged so as to overlap with a straight line α passing through the root portion 163a of the first pile 161a and the rotation axis O, and the second pile 162a may be arranged so as to overlap with a straight line β passing through the root portion 164a of the second pile 162a and the rotation axis O. In addition, the length L of the first pile 161a 161a is the length L of the second pile 162a 162a It may be shorter than that. In this case, the point P on the first pile 161a that is the furthest from the rotation axis O is 161a The distance L1 to the rotation axis O is the farthest point P from the rotation axis O on the second pile 162a. 162a Therefore, it is shorter than the distance L2 to the rotation axis O.

[0099] The first pile 161a can be formed by sewing a first pile precursor yarn, which has been made to be crimped, into a base fabric, and then cutting the first pile precursor yarn at a predetermined position.

[0100] FIG. 11 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of the third modified example of the brush roller according to the first embodiment of the present disclosure. As shown in FIG. 11, a brush roller 150b may have first piles 161b in a straight shape and second piles 162b in a crimped shape. For convenience of explanation, only one first pile and one second pile are shown in FIG.

[0101] Furthermore, when the brush roller 150b is viewed in the axial direction of its rotation axis O, the first pile 161b is arranged so as to overlap with a straight line α passing through the root portion 163b of the first pile 161b and the rotation axis O, and the second pile 162b may be arranged so as to overlap with a straight line β passing through the root portion 164b of the second pile 162b and the rotation axis O. In addition, the length L of the first pile 161b 161b is the length L of the second pile 162b 162b It may be shorter than that. In this case, the point P on the first pile 161b that is the furthest from the rotation axis O 161b The distance L1 to the rotation axis O is the farthest point P from the rotation axis O on the second pile 162b. 162b Therefore, it is shorter than the distance L2 to the rotation axis O.

[0102] The second pile 162b can be formed by sewing a second pile precursor yarn, which has been made to be crimped, into a base fabric and then cutting the second pile precursor yarn at a predetermined position.

[0103] FIG. 12 is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of the fourth modified example of the brush roller according to the first embodiment of the present disclosure. For convenience of explanation, only one first pile and one second pile are shown in FIG.

[0104] As shown in FIG. 12, in the brush roller 150c, when the brush roller 150c is viewed from the axial direction of its rotation axis O, the first pile 161c may be formed at an angle to a straight line α passing through the base portion 163c of the first pile 161c and the rotation axis O. In addition, the second pile 162c may be disposed so as to overlap with a straight line β passing through the base portion 164c of the second pile 162c and the rotation axis O. Length L of the first pile 161c 161c is the length L of the second pile 162c 162c may be the same length.

[0105] 12, the length L161c of the first pile 161c is the same as the length L162c of the second pile 162c. In this case, in the brush roller 150c, the first pile 161c is formed obliquely with respect to the straight line α, so that the point P furthest from the rotation axis O on the first pile 161c is 161c The distance L1 to the rotation axis O is the point P on the second pile 162c that is the furthest from the rotation axis O. 162c Therefore, it is shorter than the distance L2 to the rotation axis O.

[0106] For the brush roller 150c, point P 161c When a straight line passing through the axis of rotation O is perpendicular to the conveying direction of the banknotes, the distance between the first pile 161c and the magnetic detection surface is the shortest. In other words, the distance between the first pile 161c and the magnetic detection surface is a length L 161c but depends on the distance L1. Therefore, the length L of the first pile 161c 161c and the length L of the second pile 162c 162c Even if the lengths are the same, the distance L1 can be shorter than the distance L2.

[0107] The distance L1 is determined by the angle between the straight line α and the first pile 161c and the length L 161c can be adjusted to obtain the desired distance.

[0108] With brush roller 150c of this type, fine adjustment of each brush roller when setting the clearance can be made easier, and in addition, it is possible to obtain the effect of preventing a decrease in the output of the magnetic sensor while reducing the transport resistance of banknotes.

[0109] In the brush roller 150c, either one of the first piles 161c and the second piles 162c may be in a crimped shape, or both may be in a crimped shape.

[0110] In the brush roller 150c, if the distance L1 is shorter than the distance L2, the length L of the first pile 161c 161c is the length L of the second pile 162c 162c It may be shorter or longer than that.

[0111] In addition, in the brush roller 150c, the second piles 162c may be formed obliquely with respect to the straight line β, so long as the distance L1 is shorter than the distance L2.

[0112] The first pile 161c, which is formed diagonally with respect to the straight line α, can be formed by sewing a first pile precursor yarn, which has been shaped so that it is diagonal with respect to the straight line α, into a base fabric and then cutting the first pile precursor yarn at a predetermined position. The same applies to the case where the second pile 162c is formed obliquely with respect to the straight line β.

[0113] Next, a fifth modified example of the brush roller according to the first embodiment of the present disclosure and a paper sheet magnetic detection device including the brush roller will be described. In a paper sheet magnetic detection device equipped with a brush roller according to variant example 5, the piles constituting the brush roller include a first pile and a second pile of different types, the brush portion constituting the brush roller includes a thread-shaped first continuous pile having a first end and a second end opposite the first end, and a thread-shaped second continuous pile having a third end and a fourth end opposite the third end, the first continuous pile having a first end and a second end passing through gaps in different base fabrics and protruding from the base fabrics to form two first piles, and the second continuous pile having a third end and a fourth end passing through gaps in different base fabrics and protruding from the base fabric to form two second piles.

[0114] FIG. 13A is a schematic diagram of a cross section perpendicular to the rotation axis of the brush roller, showing an example of Modified Example 5 of the brush roller according to the first embodiment of the present disclosure. FIG. 13B is an enlarged view of the dashed line portion of FIG. 13A. For convenience of explanation, only one first continuous pile that forms the first pile and one second continuous pile that forms the second pile are shown in Figs. 13A and 13B.

[0115] A brush roller 250 shown in FIGS. 13A and 13B includes a roller body portion 251 and a brush portion 252 disposed on the circumferential surface of the roller body portion 251. The brush portion 252 is arranged on the peripheral surface of the roller main body portion 251 and may include a base fabric 253 composed of warp threads 253a and weft threads 253b, a thread-like first continuous pile 265 having a first end 265e1 and a second end 265e2 opposite the first end 265e1, and a thread-like second continuous pile 266 having a third end 266e3 and a fourth end 266e4 opposite the third end 266e3. The first continuous pile 265 may have a first end 265e1 and a second end 265e2 that pass through a gap S1 between different base fabrics 253 and protrude from the base fabric 253 to form two first piles 261. The second continuous pile 266 may have a third end 266e3 and a fourth end 266e4 that pass through a gap S2 between different base fabrics 253 and protrude from the base fabric 253 to form two second piles 262.

[0116] When the brush roller 250 is viewed in the axial direction of the rotation axis O, the distance from the first end 265e1 to the rotation axis O and the distance from the second end 265e2 to the rotation axis O may be the same distance L1. Furthermore, the distance from the third end 266e3 to the rotation axis O and the distance from the fourth end 266e2 to the rotation axis O may be the same distance L2. And, the distance L1 may be shorter than the distance L2.

[0117] In the case where the distance L1 in the brush roller 250 is shorter than the distance L2, in a paper magnetic detection device equipped with the brush roller 250, fine adjustment of each brush roller when setting the clearance becomes easier, and in addition, a decrease in the output of the magnetic sensor can be prevented while reducing the conveying resistance.

[0118] In the brush roller 250, the first continuous piles 265 and the second continuous piles 266 may be arranged alternately in the rotation direction r of the brush roller 250. When the first continuous pile 265 and the second continuous pile 266 are arranged in this manner, the first pile 261 and the second pile 262 are also arranged regularly, so that unevenness in the pressure when pressing the banknotes against the magnetic detection surface is less likely to occur.

[0119] As a method for producing the first pile 261 and the second pile 262, the method for producing the pile 54 in the brush roller 50 according to the first embodiment of the present disclosure can be adopted.

[0120] In addition, when the brush roller of the present disclosure includes a first pile and a second pile, the first pile and the second pile may be made of the same material or different materials, so long as the distance L1 is shorter than the distance L2. Moreover, in the brush roller of the present disclosure, the various aspects of the first pile and the second pile described above may be mixed.

[0121] In the first to fifth modified examples of the brush roller of the present disclosure, the brush roller includes two types of piles, the first pile and the second pile, but the brush roller of the present disclosure may further include another type of pile.

[0122] In the brush roller of the present disclosure, the effects have been described by focusing only on the distance L1 and the distance L2 of the first and second piles. The brush roller of the present disclosure may include a third pile that constitutes a distance L3 longer than the distance L2, and may include an nth pile that constitutes an even longer distance Ln. In this case, in the brush roller of the present disclosure, the first pile, the second pile, the third pile, . . . , the n-th pile may be arranged in this order along the rotation direction of the brush roller. In such a brush roller, the distance from the rotation axis of the brush roller to the end of each pile gradually changes along the rotation direction of the brush roller. With this configuration, fine adjustment for each brush roller when setting the clearance becomes easier.

[0123] (Embodiment 2) Next, a paper sheet processing apparatus according to a second embodiment including the paper sheet magnetic detection device according to the first embodiment of the present disclosure will be described.

[0124] FIG. 14A is a cross-sectional view that illustrates an example of a paper sheet recognition device according to the second embodiment of the present disclosure. FIG. 14B is a plan view of the upper unit of the bill validator shown in FIG. 14A, seen from below. As shown in Figures 14A and 14B, the paper sheet recognition device 10 according to the second embodiment of the present disclosure may be composed of an upper unit and a lower unit sandwiching a conveying path 32 along which banknotes 40 are conveyed. The paper sheet recognition device 10 may have a configuration in which a photosensor 11a detects the banknotes 40 transported sequentially to the paper sheet recognition device 10 along a transport path 32 for the banknotes 40 and generates a banknote detection signal for determining the timing when the paper sheet recognition device 10 starts detecting the banknotes 40; an optical line sensor (contact image sensor) 12 composed of an image sensor in which imaging elements such as CCD and CMOS are arranged in a line, and an imaging optical system such as a light source and a lens, and detects image data of the banknotes 40 transported along the transport path 32; a thickness detection sensor 13 that detects the thickness of the banknote 40 by detecting the amount of displacement of one of the rollers opposing each other across the transport path 32 when the banknote 40 passes; a magnetic sensor 2 that detects magnetic characteristics of the paper sheet, such as magnetic information and magnetic patterns contained in the banknote 40 transported along the transport path 32; and a photosensor 11b that detects the passage of the banknote 40, are arranged side by side.

[0125] The optical line sensor 12, the thickness detection sensor 13, and the magnetic sensor 2 are long enough relative to the width of the transport path 32 and can detect the entire surface of the banknote 40. The paper sheet recognition device 10 may also be provided with a transport mechanism 14 so that the banknote 40 can move within the transport path 32. The transport mechanism 14 is not particularly limited, and may be, for example, a mechanism in which rollers, belts, etc. are driven by a driving device such as a motor. Furthermore, below the magnetic sensor 2, a brush roller 50 may be arranged opposite the magnetic detection surface 2a of the magnetic sensor 2 and transports the banknote 40 by pressing it against the magnetic detection surface 2a. The mechanism for detecting magnetism of a banknote, which is composed of the magnetic sensor 2 and the brush roller 50, is the paper sheet magnetic detection device 1 according to the first embodiment of the present disclosure.

[0126] The paper sheet recognition device 10 uses data acquired by these sensors to perform recognition processing of the banknotes 40. The contents of the recognition processing are not particularly limited, and for example, in the case of banknotes, various functions such as identifying the denomination and judging whether the banknote is genuine or counterfeit and whether it is healthy or damaged can be included.

[0127] (Embodiment 3) Next, a paper sheet processing apparatus according to a third embodiment of the present disclosure including the paper sheet recognition device according to the second embodiment of the present disclosure will be described.

[0128] FIG. 15A is a perspective view that illustrates an example of a paper sheet processing apparatus according to a third embodiment of the present disclosure. FIG. 15B is a cross-sectional view that illustrates an example of the internal structure of the paper sheet processing apparatus illustrated in FIG. 15A. The sheet processing device 20 shown in FIG. 15A and FIG. 15B may include a hopper 30 on which a plurality of banknotes can be placed, a feed unit 31 that feeds out the banknotes placed in the hopper 30 one by one, a transport path 32 that transports the banknotes fed from the feed unit 31, a sheet recognition device 10 that performs a banknote recognition process, a stacking unit 33 that stacks normal banknotes recognized by the sheet recognition device 10, a reject unit 34 that stacks abnormal banknotes that do not satisfy a predetermined condition, a display unit 35 that displays information input to the sheet processing device 20 and the results of processing, and a transport unit (not shown) that transports the banknotes one by one along the transport path 32. The transport unit may include a transport means such as a plurality of rollers, and a drive device such as a motor that drives the transport means. The sheet processing device 20 may further include a transmission type or reflection type optical sensor at each position indicated by a triangle mark in the figure in order to detect the transport state of the banknotes in the device. The shape and skew state of the banknote may be estimated from the detection results of these optical sensors. By incorporating the paper sheet recognition device 10 in such a paper sheet processing device 20, multiple banknotes placed on the hopper 30 can be continuously processed, and banknotes determined to be counterfeit, damaged, or unconfirmed can be returned to the reject section 34 for sorting. The paper sheet recognition device that performs the banknote recognition process is the paper sheet recognition device 10 according to the second embodiment of the present disclosure.

[0129] (Other embodiments) When the brush roller of the present disclosure includes multiple types of piles, when the brush roller is viewed from the axial direction of the rotation shaft, the distance from the point on each pile farthest from the rotation shaft to the rotation shaft may be equal. For example, in the case where the brush roller of the present disclosure includes long pile and short pile, when the brush roller is viewed from the axial direction of the rotation shaft, the long pile may be formed diagonally with respect to a line passing through the base of the long pile and the rotation shaft, so that the distance from the point on each pile farthest from the rotation shaft to the rotation shaft is equal.

[0130] As shown in Figures 1A and 1B, in the paper sheet magnetic detection device according to embodiment 1 of the present disclosure, multiple brush rollers 50 are arranged continuously in the longitudinal direction of the shaft 3, and focusing on each individual brush roller 50, as shown in Figures 2A and 2B, the roller main body is cylindrical with a constant outer diameter. However, in the brush roller of the present disclosure, when focusing on one brush roller, a plurality of cylindrical units having different outer diameters may be arranged in the longitudinal direction of the shaft to form one roller body. In other words, the outer diameter of the roller body may have a step in the longitudinal direction of the shaft. Moreover, the units may be integrally molded to form the roller body. Even if there are steps in the roller body in the longitudinal direction of the shaft, the brush roller of the present disclosure allows the pile length, shape, angle, arrangement, and other aspects to be intentionally controlled, thereby making it possible to stabilize the quality of each brush roller. From the standpoint of manufacturing costs, a brush roller in which the roller body is cylindrical and has a constant outer diameter is more advantageous than a brush roller in which the roller body has a stepped outer diameter. [Industrial Applicability]

[0131] INDUSTRIAL APPLICABILITY As described above, the present disclosure provides a technique that is useful for intentionally controlling the length, shape, angle, arrangement, and other aspects of the pile formed on a brush roller that constitutes a paper sheet processing device. [Explanation of symbols]

[0132] 1, 101 Paper magnetic detection device 2. Magnetic Sensor 2a Magnetic detection surface 3-axis 10 Paper identification device 11a, 11b Photosensor 12 Optical line sensor 13 Thickness detection sensor 14 Conveyor mechanism 20 Paper processing device 30 Hopper 31 Payout section 32 Transport Path 33 Accumulation section 34 Reject Section 35 Display section 40 Banknotes 50, 50a, 50b, 50c, 50d, 150, 150a, 150b, 150c, 250 Brush Roller 51, 151, 251 Roller body 52, 152, 252 Brush section 53, 153, 253 Base fabric 53a, 53a1, 53a2, 53a3, 253a warp 53b, 253b Weft 54, 154 pile 55, 55a, 55b Continuous pile 55e1, 265e1 first end 55e2, 265e2 second end 56, 58 Loop pile 57, 59a, 59b, 163, 163a, 163b, 163c, 164, 164a, 164b, 164c Root part 161, 161a, 161b, 161c, 261 1st pile 162, 162a, 162b, 162c, 262 2nd pile 265 1st continuous pile 266 Second consecutive pile 266e3 3rd end 266e4 4th end S, S1, S2 gap

Claims

1. A paper sheet magnetic detection device having a magnetic sensor that detects magnetic characteristics of paper sheets, and a brush roller that is disposed opposite to a magnetic detection surface of the magnetic sensor and presses the paper sheet against the magnetic detection surface to transport the paper sheet, The brush roller includes a roller body and a brush portion disposed on a peripheral surface of the roller body. The brush portion is disposed on the peripheral surface of the roller body portion, and has a base fabric made of warp yarns and weft yarns; and a plurality of pile threads protruding from said base fabric and woven into gaps in the base fabric formed by said warp threads and said weft threads.

2. The paper sheet magnetic detection device according to claim 1 , wherein the piles include a first pile and a second pile that are different in type.

3. When the brush roller is viewed from the axial direction of the rotation shaft, The distance L1 from the point on the first pile farthest from the rotation axis to the rotation axis is 3. The paper sheet magnetic detection device according to claim 2, wherein the distance between the point on the second pile farthest from the rotation shaft and the rotation shaft is shorter than a distance L2 between the point and the rotation shaft.

4. 4. The paper sheet magnetic detection device according to claim 2, wherein the first pile and the second pile have different shapes.

5. The first pile has a crimped shape, The paper sheet magnetic detection device according to claim 4 , wherein the second pile has a straight shape.

6. The first pile has a straight shape, 5. The paper sheet magnetic detection device according to claim 4, wherein the second pile has a crimped shape.

7. 4. The paper sheet magnetic detection device according to claim 2, wherein the first pile and the second pile have different lengths.

8. When the brush roller is viewed from the axial direction of the rotation shaft, The first pile is arranged so as to overlap with a line passing through a root portion of the first pile and the rotation axis, The paper sheet magnetic detection device according to claim 7 , wherein the second pile is arranged so as to overlap with a straight line passing through a base portion of the second pile and the rotation shaft.

9. When the brush roller is viewed from the axial direction of the rotation shaft, 4. The paper sheet magnetic detection device according to claim 2, wherein the first pile is formed obliquely with respect to a line passing through the base of the first pile and the rotation shaft.

10. 4. The paper sheet magnetic detection device according to claim 2, wherein the first pile and the second pile are regularly arranged on the base fabric.

11. 11. The paper sheet magnetic detection device according to claim 10, wherein the first pile and the second pile are regularly arranged in a rotation direction of the brush roller.

12. the brush portion includes a first continuous pile thread having a first end and a second end opposite the first end, and a second continuous pile thread having a third end and a fourth end opposite the third end; The first continuous pile has the first end portion and the second end portion passing through gaps between the different base fabrics and protruding from the base fabric, thereby forming two first piles, The paper sheet magnetic detection device according to claim 2 or 3, wherein the second continuous pile is formed by the third end and the fourth end passing through gaps between the different base fabrics and protruding from the base fabric, thereby forming two second piles.

13. When the brush roller is viewed from the axial direction of the rotation shaft, A distance from the first end to the rotation shaft and a distance from the second end to the rotation shaft are the same distance L1, A distance from the third end to the rotation shaft and a distance from the fourth end to the rotation shaft are the same distance L2, The distance L1 is shorter than the distance L2, The paper sheet magnetic detection device according to claim 12, wherein the first continuous pile and the second continuous pile are arranged in a rotation direction of the brush roller.

14. The paper sheet magnetic detection device according to claim 12, wherein the first continuous pile and the second continuous pile are alternately arranged in a rotation direction of the brush roller.

15. A paper sheet identifying device comprising the paper sheet magnetic detection device according to claim 1 or 2.

16. A paper processing apparatus comprising the paper recognition device according to claim 15.

17. A brush roller is disposed opposite a magnetic detection surface of a magnetic sensor that detects magnetic characteristics of paper sheets, and is used to press the paper sheets against the magnetic detection surface and transport the paper sheets, The brush roller includes a roller body and a brush portion disposed on a peripheral surface of the roller body. The brush portion is disposed on the peripheral surface of the roller body portion, and has a base fabric made of warp yarns and weft yarns; a plurality of piles protruding from the base fabric and woven into gaps in the base fabric formed by the warp yarns and the weft yarns.

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