JPS61240391A - Printed matter discriminator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention detects the physical quantity of the banknote as reflected light or transmitted light by, for example, irradiating light onto a banknote being transported, and converts this into an electrical signal for detection. The present invention relates to a printed matter discriminating device that determines the authenticity or type of a banknote based on the detected signal, and particularly relates to an improvement of a banknote transport mechanism thereof.

[Technical background of the invention and its problems] Conventionally, for example, a bill being transported is irradiated with light, and the reflected or transmitted light is converted into an electrical signal by a light receiving element such as a line sensor, and this is used as a detection signal. There is a bill discriminating device installed in an automatic teller machine, which is a type of online terminal equipment for financial institutions, which discriminates the authenticity or type of bill based on this detection signal. In such banknote discriminating devices, stabilization of the detection signal is an important issue, and the mechanical points for stabilizing the detection signal are (1) the conveyance posture state of the banknote, which is the object to be detected; Stabilization of IJ (2) In particular, the detection of reflected light requires stabilization of the optical path length.In other words, even if the same banknote is detected under a stable light source, the conveyance state of the banknote will not be stable. Otherwise, the amount of reflected light and the amount of transmitted light will not be stable, and the detection signal will fluctuate greatly each time.Also, even if the banknote transport posture is stable, the optical path length must be stable. In this case, it is difficult to obtain a stable amount of reflected light, and the detection signal also fluctuates greatly from time to time.When such a problem occurs, many abnormal detections occur, making it difficult to obtain stable and accurate optical signals at all times. Detection becomes impossible.

[Object of the Invention] The present invention has been made in view of the above circumstances, and its purpose is to provide a method for transporting printed matter without causing any hindrance to the transportation of printed matter.
To provide a printed matter discriminating device that maintains a stable distance from a light source, reliably reduces abnormality detection, and always enables stable optical detection.

[Summary of the Invention] In order to achieve the above object, the present invention includes a light source and a light-receiving element for optically detecting information on printed matter, and a transport path that intersects with the optical path from the light source to the light-receiving element. The guide member includes at least one pair of guide members arranged opposite to each other, and at least one pair of conveyance rollers arranged near the front side of the guide member in the printed matter traveling direction that intersects the optical path of the guide member. By configuring the guide direction of the conveyance path formed by the conveyance path and the conveyance direction of the printed matter by the conveyance roller to form an acute angle, when conveying the printed matter, the printed matter is aligned with one of the guide members, and the printed matter is moved along the conveyance roller. It is designed to emit light from the darkness and stabilize the distance from the light source to the printed material.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the main parts of a banknote discriminating device according to the present invention. That is, 1 and 2 are a pair of conveyance rollers, which pinch and convey the banknote P in the direction of the arrow in the figure. This conveyance roller 1
, 2, a pair of guide plates 3.4 are disposed horizontally facing each other, and a conveyance path 5 for banknotes P is formed by these guide plates 3.4. In this case, the axis of the upper conveyance roller 1 is slightly shifted forward (toward the banknote P delivery side) than the axis of the lower conveyance roller 2, and both rollers 1.degree.2 are brought into pressure contact with each other. Thereby, the banknotes P carried out by the conveyance roller 1.degree. 2 first come into contact with the lower guide plate 4 at a predetermined angle α, and are then conveyed along the guide plate 4. A light source (for example, a fluorescent lamp) 6 and a light receiving element (for example, a line sensor) 7 for optically detecting information on the banknotes P are disposed near the banknote P delivery side of the transport rollers 1 and 2. has been done. In this case, the light from the light source 6 is irradiated onto the banknote P, and the reflected light is guided to the light receiving element 7 for photoelectric conversion, and the optical path from the light source 6 to the light receiving element 7 intersects with the conveyance path 5. are doing. In addition, 8 is a standard reflective plate, which receives the light from 6 and reflects it to the light receiving element 7 when the banknote P is not present. The output of the light-receiving element 7 is sent as a detection signal to a discriminating section (not shown), where the authenticity or type of banknote P is discriminated based on the detection signal.

With such a configuration, the banknotes P can pass through the conveyance rollers 1.2 without causing any hindrance to conveyance, and then be conveyed along the lower guide plate 4. Therefore, after passing the conveyance roller 1.2, the banknote P does not move vertically and maintains a constant distance from the light source 6, making it possible to always perform stable optical detection, which in turn reduces misidentification, etc.
It is possible to improve the discrimination performance.

In the above embodiment, the axes of the pair of transport rollers 1 and 2 are slightly shifted so that the banknotes P passing through the transport rollers 1 and 2 are aligned with the lower guide plate 4. As shown in FIG. 2, a pair of conveyance rollers 1,
2 may be arranged on a vertical line, and the guide plate 3.4 may be slightly inclined at an angle β with respect to the tangential direction of the conveyance rollers 1, 2.

Further, in the above embodiment, the case where the invention is applied to a banknote discriminating device has been described, but the present invention is not limited to this, and can also be applied to a discriminating device for other printed matter such as checks or other securities. .

[Effect of the Invention J As detailed above, according to the present invention, it is possible to maintain a stable distance from a light source without causing any hindrance to the conveyance of printed matter,
It is possible to provide a printed matter discrimination device that reliably reduces abnormality detection and enables stable optical detection at all times.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a main part of a banknote discriminating apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a main part of a banknote discriminating apparatus according to another embodiment of the present invention. P... Banknote (printed matter), 1.2... Conveyance roller, 3.4... Guide plate, 5...
- Conveyance path, 6... Light source, 7... Light receiving element. Figure 1 Figure 2

Claims (2)

[Claims] (1) In a printed matter discriminating device that transports a printed matter and identifies the printed matter by optically detecting predetermined information from the printed matter being transported, a light source and a light source for optically detecting information on the printed matter are provided. a light-receiving element; at least a pair of guide members disposed opposite each other to form a conveyance path that intersects the optical path from the light source to the light-receiving element; and a front side of the guide member in the printed matter traveling direction that intersects the optical path. and at least a pair of conveyance rollers disposed near the sides, and configured such that the guide direction of the conveyance path formed by the guide member and the direction in which the printed matter is conveyed by the conveyance rollers form an acute angle. A printed matter discrimination device characterized by: (2) The printed matter discriminating device according to claim 1, wherein the printed matter is a banknote.