JP2006079429A - Recording medium carrying device - Google Patents

Recording medium carrying device Download PDF

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JP2006079429A
JP2006079429A JP2004263950A JP2004263950A JP2006079429A JP 2006079429 A JP2006079429 A JP 2006079429A JP 2004263950 A JP2004263950 A JP 2004263950A JP 2004263950 A JP2004263950 A JP 2004263950A JP 2006079429 A JP2006079429 A JP 2006079429A
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recording medium
light
recording
receiving means
output
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JP4395033B2 (en
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Shigeki Ozawa
茂樹 小澤
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Nidec Instruments Corp
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Nidec Sankyo Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To set a proper criterion in consideration of variation of sensitivity or performance in an individual device. <P>SOLUTION: This recording medium carrying device has a sensor 2 comprising a light emission means 3 irradiating light of a certain wavelength range onto a recording medium carrying path 1 and a light reception means 4 receiving light emission or fluorescence of a record information part 5a, irradiates the light of a ceratin wavelength range on the record information part 5a formed on a recording medium 5 carried near the light emission means 3 and the light reception means 4, receives the light from the record information part 5a by the light reception means 4, and performs distinction of the kind of the recording medium 5 or decision of genuineness of the recording medium 5 on the basis of detection output thereof. The recording medium carrying device is provided with a threshold value adjustment mechanism irradiating the light of a certain wavelength range on a frame 6 forming the recording medium carrying path 1 when the recording medium 5 is absent near the light emission means 3 and the light reception means 4, receiving reflected light thereof by the light reception means 4, and adjusting a threshold value level of detection output on the basis of light reception output thereof. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は記録媒体搬送装置に関する。さらに詳述すると、本発明は、記録媒体に向けて紫外線等の光を照射し、その反射光の検出出力に基づいて当該記録媒体の真偽の判定または種別の区別をするための機構の改良に関する。   The present invention relates to a recording medium conveying apparatus. More specifically, the present invention improves the mechanism for irradiating the recording medium with light such as ultraviolet rays and determining the authenticity of the recording medium or distinguishing the type based on the detection output of the reflected light. About.

例えば包装箱にバーコードが記された一般加工食品に代表されるように、個体識別等のためのデータの記録情報部がそのパッケージに付されているもの(本明細書ではこれらを総称して記録媒体と呼ぶ)が流通している。また、このような記録媒体を自動搬送しながら当該記録情報部のデータを検出する搬送装置として、当該記録情報部に向けて光を照射しその反射光を検出するという装置が利用されている(バーコードリーダとして、例えば特許文献1参照)。   For example, as represented by a general processed food with a barcode on a packaging box, a data recording information section for individual identification etc. is attached to the package (in this specification, these are collectively referred to) Called recording media). In addition, as a transport device that detects data of the recording information section while automatically transporting such a recording medium, an apparatus that irradiates light toward the recording information section and detects reflected light is used ( As a barcode reader, for example, see Patent Document 1.

上記の記録情報部が例えば白黒の光学式バーコードである場合には、黒色のバーコード部分と白色のそれ以外の部分とで反射光に出力差が生じることを利用して当該バーコードのデータを検出することができる。より具体的には、当該出力差の中間あたりにしきい値を設定しておくことで、出力の大小に基づきバーコードの有無や長さを判断することができる。この場合、バーコード出力がダイナミックレンジ内で出来るだけ振幅を持つように例えばフォトトランジスタのロード抵抗を調整することになる(なお、センサ調整方法の一例として特許文献2参照)。このような一般の光学式バーコードは、単なる固有の番号をバーコードに置き換えたものであるから、基本的には濃淡を作りさえすれば容易に複製が可能ないわばセキュリティ性のないものということができる。   When the recording information portion is, for example, a black and white optical barcode, the barcode data is obtained by utilizing the difference in output between reflected light between the black barcode portion and the other white portion. Can be detected. More specifically, by setting a threshold value around the middle of the output difference, it is possible to determine the presence / absence and length of the bar code based on the magnitude of the output. In this case, for example, the load resistance of the phototransistor is adjusted so that the bar code output has as much amplitude as possible within the dynamic range (refer to Patent Document 2 as an example of a sensor adjustment method). Such a general optical bar code is simply a unique number replaced with a bar code, so basically it is not secure if it can be easily copied only by creating a shade. Can do.

これに対し、セキュリティ性を併せ備えたバーコード、例えば、日本銀行券2000円札に使用されているような特殊発光インキで形成され、紫外線が照射されると当該バーコード部分のみオレンジ色や黄緑色に発光するというバーコードも利用されている。このようなバーコードが付された記録媒体は、搬送路を搬送されている間に当該記録情報部(バーコード部分)に紫外線が照射され、オレンジ色や黄緑色に発色する部分のみ出力が得られる。   On the other hand, it is formed of a bar code with security, for example, a special light-emitting ink such as that used in Bank of Japan 2000 yen bills, and when irradiated with ultraviolet light, only the bar code portion is orange or yellow. A bar code that emits green light is also used. A recording medium with such a barcode is irradiated with ultraviolet rays on the recording information portion (barcode portion) while being transported along the transport path, and an output is obtained only for a portion that is colored orange or yellow-green. It is done.

このようにセキュリティ性を併せ備えた発光性のバーコードの場合、単なる濃淡差ではなくバーパターン自体を読み取り、さらに、特殊発光インキによって意図されている反射光が得られているかどうかをチェックする必要がある。つまり、単にしきい値を基準に出力の大小のみ判断すれば事足りた白黒のバーコードとは異なり、特殊発光インキの本来のレベルの出力が得られているかどうかまで判断しなければならない。この場合、フォトセンサの出力値が個体差によってばらつくので、特殊発光インキのパターンの出力を認識するための基準値が必要となる。   In the case of a luminescent bar code with security, it is necessary to read the bar pattern itself, not just the difference in density, and check whether the reflected light intended by the special luminescent ink is obtained. There is. In other words, it is necessary to determine whether or not the output of the original level of the special luminescent ink is obtained, unlike the black and white bar code, which is sufficient to determine only the magnitude of the output based on the threshold value. In this case, since the output value of the photosensor varies depending on individual differences, a reference value for recognizing the output of the special luminescent ink pattern is required.

従来は、基準となる媒体(例えば基準値となる出力が得られるカード)を利用してこれを基に基準値を設定するなどの措置をとっていた。   Conventionally, measures such as setting a reference value based on a reference medium (for example, a card capable of obtaining an output as a reference value) have been taken.

特開平9−265506号公報JP-A-9-265506 特開2000−57399号公報JP 2000-57399 A

しかしながら、実際には記録媒体搬送装置ごとにフォトセンサの感度や性能にばらつきがあるため、出力レベルどおりの出力が得られているかどうかの判断基準の設定が難しい。すなわち、個々の装置における感度や性能のばらつきを考慮すると判断基準を一律に設定することは困難である。また、基準となる媒体を使ってひとまず判断基準値を調整したとしても、その後、汚れ付着や光照射量低下等の経年変化によって感度や性能に再び変化が生じる場合がある。さらには、装置を一度市場に投入してしまうとその後に何度も調整を実施することは容易でなく、二度と調整できない場合もあるという実情もある。いうまでもなく、判断基準が適正値からずれてしまっていると、特殊発光インキの本来の出力レベルどおりの出力が得られているかどうか正確に判断することができなくなる。   However, in actuality, the sensitivity and performance of the photo sensor varies from recording medium conveyance device to recording medium conveying device, so it is difficult to set a criterion for determining whether or not an output according to the output level is obtained. In other words, it is difficult to set a uniform determination criterion in consideration of variations in sensitivity and performance among individual devices. Even if the determination reference value is adjusted for the time being using a reference medium, the sensitivity and performance may change again due to secular changes such as dirt adhesion and a decrease in light irradiation amount. Furthermore, once the device is put on the market, it is not easy to make adjustments many times after that, and there are cases where adjustments cannot be made again. Needless to say, if the criterion is deviated from an appropriate value, it is impossible to accurately determine whether or not the output corresponding to the original output level of the special luminescent ink is obtained.

そこで、本発明は、個々の装置における感度や性能のばらつきを考慮し、適正な判断基準を設定することによって特殊発光インキの本来の出力レベルどおりの出力が得られているかどうかを正確に判断することができる記録媒体搬送装置を提供することを目的とする。   Therefore, the present invention accurately determines whether or not an output corresponding to the original output level of the special luminescent ink is obtained by setting an appropriate determination criterion in consideration of variations in sensitivity and performance in each apparatus. It is an object of the present invention to provide a recording medium conveyance device that can perform the above-described process.

かかる目的を達成するため、請求項1記載の発明は、記録媒体搬送路に向けてある波長域の光を照射する発光手段及びこの光によって照射光とは異なるピークの波長域に発光または蛍光する記録情報部の光を受光する受光手段からなるセンサを備え、発光手段と受光手段の近傍を搬送される記録媒体上に形成された記録情報部にある波長域の光を照射し、この記録情報部からの光を受光手段で受光し、その検出出力に基づき記録媒体の真偽の判定または記録媒体の種別の区別を行う記録媒体搬送装置であって、発光手段及び受光手段の近傍に記録媒体が存在しない場合にある波長域の光を記録媒体搬送路を形成するフレームに照射し、その反射光を受光手段で受光し、その受光出力に基づいて検出出力のしきい値レベルを調整するしきい値調整機構を備えるというものである。   In order to achieve such an object, the invention according to claim 1, the light emitting means for irradiating light in a certain wavelength region toward the recording medium conveyance path and the light emitted or fluorescent in a peak wavelength region different from the irradiated light by this light. A sensor comprising a light receiving means for receiving the light of the recording information section is provided, and light in the wavelength region in the recording information section formed on the recording medium transported in the vicinity of the light emitting means and the light receiving means is irradiated, and this recording information A recording medium transport apparatus that receives light from a light receiving unit and determines the authenticity of the recording medium or distinguishes the type of the recording medium based on the detection output, and is in the vicinity of the light emitting unit and the light receiving unit. When there is no light, irradiate the frame that forms the recording medium conveyance path with light in a certain wavelength range, receive the reflected light with the light receiving means, and adjust the threshold level of the detection output based on the received light output. Threshold value It is that a mechanism.

本発明にかかる記録媒体搬送装置においては、光出力を判断する際に用いるしきい値レベルを設定する際、フレームに光を照射し、その反射光の出力レベルを利用して判定基準を作成し、しきい値レベルを設定する。このような仕組みの記録媒体搬送装置においては、記録媒体搬送路のフレーム面が常にしきい値レベルの基準となるので、たとえ製品出荷後であっても、しきい値レベルを恒常的に補正することが可能となる。   In the recording medium conveying apparatus according to the present invention, when setting the threshold level used when judging the light output, the frame is irradiated with light, and a judgment criterion is created using the output level of the reflected light. Set the threshold level. In the recording medium conveying apparatus having such a mechanism, the frame surface of the recording medium conveying path is always a reference for the threshold level, so that the threshold level is constantly corrected even after the product is shipped. It becomes possible.

請求項2に記載の発明は、請求項1に記載の記録媒体搬送装置において、記録情報部が、バーとスペースとを交互に配置したバーコード、または単にバー部のみを記録媒体上に変形した形で配置したものであることを特徴としている。   According to a second aspect of the present invention, in the recording medium conveying apparatus according to the first aspect, the recording information section is a bar code in which bars and spaces are alternately arranged, or only the bar section is deformed on the recording medium. It is characterized by being arranged in a form.

また、この記録媒体搬送装置は、請求項3のように、記録媒体搬送路を搬送される記録媒体毎にしきい値レベルを調整するものであることが好ましい。   Further, the recording medium conveying apparatus preferably adjusts the threshold level for each recording medium conveyed through the recording medium conveying path.

さらに、記録媒体搬送装置は、請求項4のように、記録媒体が記録媒体搬送路を搬送される直前にしきい値レベルを調整するものであれば更に好ましい。   Further, it is more preferable that the recording medium conveying apparatus adjusts the threshold level immediately before the recording medium is conveyed on the recording medium conveying path.

請求項1記載の記録媒体搬送装置によると、例えば製品の出荷後などにおいても出力レベルのしきい値を恒常的に微調整し補正することができるため、基準媒体を用いて行うような特別な調整作業が不要である。また、出力設定および実際の出力判断に使用される光の感度や性能に大きな差はないことになるから、汚れ付着や光照射量低下等の経年変化、さらには温度による影響にかかわらずこれらを吸収して高精度の検出・判断を継続的に行えるようになる。この結果、個々の装置における感度や性能のばらつきにかかわらず、適正な判断基準を設定することによって特殊発光インキの本来の出力レベルどおりの出力が得られているかどうかを正確に判断することが可能となる。   According to the recording medium conveying apparatus of the first aspect, the threshold of the output level can be constantly finely adjusted and corrected even after the product is shipped, for example. No adjustment work is required. In addition, since there is no significant difference in the sensitivity and performance of the light used for output setting and actual output judgment, these can be adjusted regardless of the secular change such as dirt adhesion or decrease in light irradiation, and the influence of temperature. By absorbing it, it becomes possible to continuously detect and judge with high accuracy. As a result, it is possible to accurately determine whether the output of the special light-emitting ink is the same as the original output level by setting appropriate judgment criteria regardless of variations in sensitivity and performance of individual devices. It becomes.

請求項2記載の記録媒体搬送装置によると、バーコードに記録された情報を正確に判断することができる。   According to the recording medium transport apparatus of the second aspect, the information recorded on the barcode can be accurately determined.

請求項3記載の記録媒体搬送装置によると、記録媒体搬送装置毎の感度や性能のばらつきをも取り込んだ形で適正なしきい値を設定できるばかりでなく、仮に当該記録媒体搬送装置が長らく使用されていなかった場合にも、汚れ付着や光照射量低下等の経年変化をも取り込んだ形で適正なしきい値を設定することができる。   According to the recording medium transport apparatus of claim 3, not only can an appropriate threshold value be set in consideration of variations in sensitivity and performance of each recording medium transport apparatus, but the recording medium transport apparatus is used for a long time. Even if not, an appropriate threshold value can be set in a manner that incorporates secular changes such as dirt adhesion and a decrease in light irradiation amount.

請求項4記載の記録媒体搬送装置によると、調整された直近のしきい値に基づき判定することが可能となり、より高精度となる。   According to the recording medium conveying apparatus of the fourth aspect, it is possible to make a determination based on the latest adjusted threshold value, and the accuracy becomes higher.

以下、本発明の構成を図面に示す実施の形態に基づいて詳細に説明する。   Hereinafter, the configuration of the present invention will be described in detail based on embodiments shown in the drawings.

図1〜図3に本発明を適用した記録媒体搬送装置の一実施形態を示す。この記録媒体搬送装置は、記録媒体搬送路1に向けて光を照射する発光手段3及びこの光を受けたことにより記録情報部5a(より具体的には、例えば記録情報部5a中に含まれる特殊インキ)が発する光(発光ないしは蛍光)を受光する受光手段4からなるセンサ2を備え、発光手段3と受光手段4の近傍を搬送される記録媒体5上に形成された記録情報部5aに光を照射し、その反射光を受光手段4で受光し、その検出出力に基づき記録媒体5の真偽を判定するかまたは記録媒体5の種別を区別するという装置である。本実施形態の記録媒体搬送装置は、発光手段3及び受光手段4の近傍に記録媒体5が存在しない場合に光を記録媒体搬送路1を形成するフレーム6に照射し、その反射光を受光手段4で受光し、その受光出力に基づいて検出出力のしきい値レベルを調整するしきい値調整機構を備えている(図1等参照)。この場合におけるフレーム6の反射光は特殊インキの発光または蛍光を含むものではないことから、受光手段4側が感受するのは装置発光の光波長成分のみとなる。このとき、当該光波長の成分はセンサ2の取付状態、汚れ、温度変化に応じた出力値となる。   1 to 3 show an embodiment of a recording medium conveying apparatus to which the present invention is applied. The recording medium conveying apparatus includes a light emitting unit 3 that emits light toward the recording medium conveying path 1 and a recording information unit 5a (more specifically, for example, included in the recording information unit 5a by receiving the light. A recording information section 5a formed on a recording medium 5 is provided on a recording medium 5 which is provided with a light receiving means 4 for receiving light (emission or fluorescence) emitted by special ink) and is conveyed in the vicinity of the light emitting means 3 and the light receiving means 4. In this apparatus, light is irradiated, the reflected light is received by the light receiving means 4, and the authenticity of the recording medium 5 is determined based on the detection output, or the type of the recording medium 5 is distinguished. The recording medium transport apparatus of this embodiment irradiates light onto the frame 6 that forms the recording medium transport path 1 when the recording medium 5 is not present in the vicinity of the light emitting means 3 and the light receiving means 4, and receives the reflected light as the light receiving means. 4 is provided, and a threshold adjustment mechanism is provided for adjusting the threshold level of the detection output based on the received light output (see FIG. 1 and the like). In this case, since the reflected light of the frame 6 does not include the light emission or fluorescence of special ink, the light receiving means 4 senses only the light wavelength component of the device light emission. At this time, the component of the light wavelength becomes an output value corresponding to the mounting state of the sensor 2, dirt, and temperature change.

記録媒体5は、何らかの情報が記録されたカードなどの媒体である。この記録媒体5には記録情報部5aが形成され、かかる記録情報部5aに情報が記録されている。例えば本実施形態では交互に配置されたバーとスペースからなるバーコードを記録媒体5の一方の面に形成している。ただしこのような構成に限られるということではなく、この他、例えば記録媒体5の一部を凸部とすることにより単にバー部のみで記録情報部5aを構成することももちろん可能である。さらに、本実施形態ではかかるバーコード(より詳しくは当該バーコードのバーの部分)を特定の波長の光に呼応して発光する特殊発光インキによって(あるいは当該特殊インキを含めて)形成している。こうした場合、例えば紫外線を照射すれば当該特殊発光インキの特性や仕様に基づいた本来の出力が得られることになるため、当該出力が実際に得られるかどうかをバーコードが有する更なる情報の一つとすることができる。   The recording medium 5 is a medium such as a card on which some information is recorded. A recording information section 5a is formed on the recording medium 5, and information is recorded in the recording information section 5a. For example, in this embodiment, a bar code composed of alternately arranged bars and spaces is formed on one surface of the recording medium 5. However, the present invention is not limited to such a configuration. In addition, for example, the recording information portion 5a can be configured by only the bar portion by forming a part of the recording medium 5 as a convex portion. Further, in the present embodiment, such a barcode (more specifically, the bar portion of the barcode) is formed by (or including) the special luminescent ink that emits light in response to light of a specific wavelength. . In such a case, for example, if an ultraviolet ray is irradiated, an original output based on the characteristics and specifications of the special luminescent ink can be obtained. Therefore, whether the output is actually obtained is one of the additional information that the barcode has. It can be one.

記録媒体搬送路1は、記録媒体5を搬送するために記録媒体搬送装置内に設けられた搬送用スペースである。特に図示していないが、この記録媒体搬送路1には、記録媒体5を表裏から挟み込んで前後に送り出すローラなどの搬送手段が設置されている。また、記録媒体搬送路1の周囲のうち少なくともセンサ2近傍の底面(いわば走行面)はフレーム6によって形成されている(図1等参照)。本実施形態のフレーム6は黒色の樹脂製であるが特にこれに限られるわけではなく、しきい値レベルを調整するに足る程度に紫外線等の光を反射することができるものであればよい。   The recording medium conveyance path 1 is a conveyance space provided in the recording medium conveyance device for conveying the recording medium 5. Although not particularly illustrated, the recording medium conveying path 1 is provided with conveying means such as a roller that sandwiches the recording medium 5 from the front and back and feeds it back and forth. Further, at least a bottom surface (so-called traveling surface) in the vicinity of the sensor 2 in the periphery of the recording medium conveyance path 1 is formed by a frame 6 (see FIG. 1 and the like). The frame 6 of the present embodiment is made of a black resin, but is not particularly limited to this, and any frame can be used as long as it can reflect light such as ultraviolet rays enough to adjust the threshold level.

センサ2は、光を照射する発光手段3と特殊インキの発光、蛍光を受光する受光手段4からなる装置である。発光手段3は例えばLEDであり、受光手段4は例えばフォトダイオード(PD)である。発光手段3、受光手段4ともに搬送媒体5の記録情報部5aのある側にV形に傾斜した状態で設置されている(図1、図2参照)。発光手段3から照射された光は、当該光が照射された先に搬送媒体5が位置していれば当該搬送媒体5の表面あるいは当該搬送媒体5上に形成されている記録情報部5aで特殊インキが発光または蛍光し、照射先に搬送媒体5が位置していなければフレーム6で反射する。記録情報部5aにおいて特殊インキが発光または蛍光する際、当該記録情報部5aの光は、照射光とは異なるピークの波長域の光となって発光または蛍光する。発光または蛍光のいずれの場合の光も受光手段4によって受光される(図1、図2参照)。なお、発光手段3および受光手段4は透明の防塵カバー7によって覆われている(図1参照)。   The sensor 2 is a device comprising a light emitting means 3 for irradiating light and a light receiving means 4 for receiving light emission and fluorescence of special ink. The light emitting means 3 is, for example, an LED, and the light receiving means 4 is, for example, a photodiode (PD). Both the light emitting means 3 and the light receiving means 4 are installed in a state of being inclined in a V shape on the side of the conveyance medium 5 where the recording information section 5a is present (see FIGS. 1 and 2). The light emitted from the light emitting means 3 is specially recorded on the surface of the transport medium 5 or on the recording information section 5a formed on the transport medium 5 if the transport medium 5 is located at the destination of the light. The ink emits light or fluorescent light, and is reflected by the frame 6 if the conveyance medium 5 is not located at the irradiation destination. When the special ink emits or fluoresces in the recording information portion 5a, the light of the recording information portion 5a emits or fluoresces as light having a peak wavelength range different from the irradiation light. Light in either case of light emission or fluorescence is received by the light receiving means 4 (see FIGS. 1 and 2). The light emitting means 3 and the light receiving means 4 are covered with a transparent dustproof cover 7 (see FIG. 1).

以上のような構成の記録媒体搬送装置においては、受光手段4のしきい値レベルを設定する際、フレーム6に光を照射し、反射光の出力レベルを利用して判定基準作成を行うことができる。本実施形態の場合にはフレーム6の表面が黒色であるが、この場合の反射レベルはそれ程ばらつくことはなく、従ってこれを基準として安定したしきい値レベルを設定することが可能となっている。このようなしきい値レベルの調整や設定は、記録媒体搬送路1を搬送される記録媒体5毎に実施することが好ましい。こうした場合、記録媒体搬送装置毎の感度や性能のばらつきをも取り込んだ形で適正なしきい値(判断基準値)を設定できるばかりでなく、仮に当該記録媒体搬送装置が長らく使用されていなかった場合にも、汚れ付着や光照射量低下等の経年変化をも取り込んだ形でしきい値を適正に設定することができる。加えて、この場合には記録媒体5が記録媒体搬送路1を搬送される直前にしきい値レベルを調整することがさらに好ましい。調整された直近のしきい値に基づきより正確に判定することが可能となる。   In the recording medium transport apparatus having the above-described configuration, when setting the threshold level of the light receiving means 4, the frame 6 is irradiated with light, and the determination reference is created using the output level of the reflected light. it can. In the case of this embodiment, the surface of the frame 6 is black, but the reflection level in this case does not vary so much, and therefore it is possible to set a stable threshold level based on this. . Such adjustment and setting of the threshold level is preferably performed for each recording medium 5 conveyed through the recording medium conveyance path 1. In such a case, not only can an appropriate threshold value (judgment reference value) be set in a way that incorporates variations in sensitivity and performance for each recording medium transport apparatus, but also if the recording medium transport apparatus has not been used for a long time. In addition, the threshold value can be appropriately set in a manner that incorporates secular changes such as dirt adhesion and a decrease in light irradiation amount. In addition, in this case, it is more preferable to adjust the threshold level immediately before the recording medium 5 is conveyed through the recording medium conveyance path 1. It becomes possible to determine more accurately based on the adjusted latest threshold value.

ここで、出力レベルの判定基準作成の具体例を図を使って説明しておく(図3参照)。図3中のAは、フレーム6で反射した光を受光した場合の出力レベルを表している。また、Bは記録媒体5の表面(ただし記録情報部5aを除く)での反射光の出力レベルを表し、Dは記録情報部5aでの反射光の出力レベルを表している。判定基準値をどの程度の値に設定すべきかは各装置の構成や光の強度など種々の構成内容に応じて変わってくるが、例えば本実施形態ではAで示す出力レベルaの2倍の値(2×a)を判定基準値としている(図中のC)。   Here, a specific example of creation of output level determination criteria will be described with reference to the drawings (see FIG. 3). A in FIG. 3 represents an output level when the light reflected by the frame 6 is received. B represents the output level of reflected light on the surface of the recording medium 5 (excluding the recording information section 5a), and D represents the output level of reflected light on the recording information section 5a. The value to which the determination reference value should be set varies depending on various configurations such as the configuration of each device and the light intensity. In this embodiment, for example, a value that is twice the output level a indicated by A (2 × a) is set as a determination reference value (C in the figure).

なお、上述の実施形態は本発明の好適な実施の一例ではあるがこれに限定されるものではなく本発明の要旨を逸脱しない範囲において種々変形実施可能である。例えば、本実施形態においてはフレーム6における反射光を出力レベルの判定基準作成に利用しているがこれ以外の光を利用することも可能であり、一例を挙げれば、防塵カバー7にて反射させた光を利用して判定基準作成に利用することが可能である。   The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in the present embodiment, the reflected light from the frame 6 is used to create a criterion for determining the output level. However, other light can be used. For example, the reflected light is reflected by the dust cover 7. It is possible to use it for the creation of a judgment standard using the light.

また、本実施形態においては照射される光の一例として紫外線を挙げているがこれは一例にすぎず、この紫外線の他、可視光、赤外光のいずれを利用することもできる。   In the present embodiment, ultraviolet light is used as an example of light to be irradiated. However, this is only an example, and any visible light or infrared light can be used in addition to the ultraviolet light.

また、本実施形態における記録媒体5の記録情報部5aは照射光とは異なるピークの波長域に発光または蛍光するというものであったが、このことからすれば、装置にて照射する光のピーク波長域が記録情報部5a(中の特殊インキ)でのピーク発光、蛍光波長域と異なるものにも本発明を適用できることは明らかである。   In addition, the recording information portion 5a of the recording medium 5 in the present embodiment emits or fluoresces in a peak wavelength region different from the irradiation light. From this, the peak of the light irradiated by the apparatus is calculated. It is obvious that the present invention can be applied to the case where the wavelength range is different from the peak emission and fluorescence wavelength range in the recording information portion 5a (special ink inside).

本発明の一実施形態を示す記録媒体搬送装置内のセンサ周辺の縦断面図である。FIG. 3 is a vertical cross-sectional view of the periphery of a sensor in the recording medium conveying apparatus showing an embodiment of the present invention. 記録媒体搬送装置内のセンサ周辺を示す斜視図である。FIG. 6 is a perspective view showing the vicinity of a sensor in a recording medium transport device. 出力レベルの判定基準作成の具体例を説明するための出力図である。It is an output figure for demonstrating the specific example of criteria creation of an output level.

符号の説明Explanation of symbols

1 記録媒体搬送路
2 センサ
3 発光手段
4 受光手段
5 記録媒体
5a 記録情報部
6 フレーム
DESCRIPTION OF SYMBOLS 1 Recording medium conveyance path 2 Sensor 3 Light emission means 4 Light reception means 5 Recording medium 5a Recording information part 6 Frame

Claims (4)

記録媒体搬送路に向けてある波長域の光を照射する発光手段及びこの光によって照射光とは異なるピークの波長域に発光または蛍光する記録情報部の光を受光する受光手段からなるセンサを備え、前記発光手段と受光手段の近傍を搬送される記録媒体上に形成された記録情報部に前記ある波長域の光を照射し、この記録情報部からの光を前記受光手段で受光し、その検出出力に基づき前記記録媒体の真偽の判定または前記記録媒体の種別の区別を行う記録媒体搬送装置であって、前記発光手段及び受光手段の近傍に前記記録媒体が存在しない場合に前記ある波長域の光を前記記録媒体搬送路を形成するフレームに照射し、その反射光を前記受光手段で受光し、その受光出力に基づいて前記検出出力のしきい値レベルを調整するしきい値調整機構を備えることを特徴とする記録媒体搬送装置。   A light emitting means for irradiating light in a certain wavelength range toward the recording medium conveyance path, and a sensor comprising a light receiving means for receiving the light of the recording information portion that emits or fluoresces in a wavelength band having a peak different from the irradiated light by this light. The recording information section formed on the recording medium conveyed in the vicinity of the light emitting means and the light receiving means is irradiated with light in the certain wavelength range, and the light from the recording information section is received by the light receiving means. A recording medium conveying apparatus for determining whether the recording medium is true or false based on a detection output, or distinguishing the type of the recording medium, wherein the wavelength is set when the recording medium does not exist in the vicinity of the light emitting means and the light receiving means A threshold adjuster that irradiates a frame forming the recording medium conveyance path with light in the region, receives the reflected light with the light receiving means, and adjusts the threshold level of the detection output based on the received light output Recording medium transport device, characterized in that it comprises a. 前記記録情報部は、バーとスペースとを交互に配置したバーコード、または単にバー部のみを記録媒体上に変形した形で配置したものであることを特徴とする請求項1記載の記録媒体搬送装置。   2. The recording medium conveyance according to claim 1, wherein the recording information section is a bar code in which bars and spaces are alternately arranged, or a bar code in which only the bar section is deformed on the recording medium. apparatus. 前記記録媒体搬送路を搬送される前記記録媒体毎に前記しきい値レベルを調整することを特徴とする請求項1または2に記載の記録媒体搬送装置。   3. The recording medium conveying apparatus according to claim 1, wherein the threshold level is adjusted for each of the recording media conveyed through the recording medium conveying path. 前記記録媒体が前記記録媒体搬送路を搬送される直前に前記しきい値レベルを調整することを特徴とする請求項3に記載の記録媒体搬送装置。   4. The recording medium conveying apparatus according to claim 3, wherein the threshold level is adjusted immediately before the recording medium is conveyed along the recording medium conveying path.
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KR101109610B1 (en) * 2011-04-25 2012-01-31 주식회사 네오랩컨버전스 A film recorded with code, reader used therefor, electronic device equipped with display covered with the film
KR101138912B1 (en) 2011-09-01 2012-05-14 주식회사 네오랩컨버전스 A film recorded with code, reader used therefor, electronic device equipped with display covered with the film
WO2013151234A1 (en) * 2012-04-03 2013-10-10 인텔렉추얼디스커버리 주식회사 Film on which code is recorded, reader used for recognizing the film on which code is recorded, and electronic apparatus including display device having film on which code is recorded attached thereto
KR101330029B1 (en) 2012-04-03 2013-11-18 인텔렉추얼디스커버리 주식회사 A Film Recorded with Code, Electronic Device Equipped with Display Covered with the Film

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101109610B1 (en) * 2011-04-25 2012-01-31 주식회사 네오랩컨버전스 A film recorded with code, reader used therefor, electronic device equipped with display covered with the film
WO2012148079A3 (en) * 2011-04-25 2012-12-20 인텔렉추얼디스커버리 주식회사 Film on which a code is recorded, reader used for recognizing the film on which a code is recorded, and electronic equipment including a display device to which the film on which a code is recorded is attached
CN103493064A (en) * 2011-04-25 2014-01-01 英迪股份有限公司 Film on which a code is recorded, reader used for recognizing the film on which a code is recorded, and electronic equipment including a display device to which the film on which a code is recorded is attached
CN103493064B (en) * 2011-04-25 2016-06-22 尼奥实验室聚合有限公司 Record the film of coding, reader and possess the electronic machine of display device
KR101138912B1 (en) 2011-09-01 2012-05-14 주식회사 네오랩컨버전스 A film recorded with code, reader used therefor, electronic device equipped with display covered with the film
WO2013151234A1 (en) * 2012-04-03 2013-10-10 인텔렉추얼디스커버리 주식회사 Film on which code is recorded, reader used for recognizing the film on which code is recorded, and electronic apparatus including display device having film on which code is recorded attached thereto
KR101330029B1 (en) 2012-04-03 2013-11-18 인텔렉추얼디스커버리 주식회사 A Film Recorded with Code, Electronic Device Equipped with Display Covered with the Film

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