JPH01255982A - Printed matter discriminating device - Google Patents
Printed matter discriminating deviceInfo
- Publication number
- JPH01255982A JPH01255982A JP8315488A JP8315488A JPH01255982A JP H01255982 A JPH01255982 A JP H01255982A JP 8315488 A JP8315488 A JP 8315488A JP 8315488 A JP8315488 A JP 8315488A JP H01255982 A JPH01255982 A JP H01255982A
- Authority
- JP
- Japan
- Prior art keywords
- printed matter
- spot light
- discriminating
- light
- spot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 13
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 16
- 238000007689 inspection Methods 0.000 abstract description 7
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000036544 posture Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000032258 transport Effects 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 238000012850 discrimination method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
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- Image Analysis (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は印刷物の判別装置に係り、特に高速に検出を行
える印刷物判別装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a printed matter discrimination device, and particularly to a printed matter discrimination device that can perform high-speed detection.
（従来の技術）
従来の方法は印刷物全面又は印刷物の搬送方向と垂直な
方向に一次元的に光をあて、その透過光を受光し、それ
により検出した透過光信号による周波数の特徴によって
印刷物の種類を判別していたか、反射光を受光し、これ
を画像として処理し判別を行っていた。(Prior art) In the conventional method, light is applied one-dimensionally to the entire surface of a printed matter or in a direction perpendicular to the conveying direction of the printed matter, and the transmitted light is received, and the frequency characteristics of the detected transmitted light signal are used to detect the printed matter. Either the type was determined, or the reflected light was received and processed as an image.
また、これとは別な方法として色認識、磁気インクによ
る判別方法があった。In addition, there are other methods such as color recognition and discrimination using magnetic ink.
（発明が解決しようとする課題）
従来の透過光信号の周波数特性による印刷物判別方法で
は、印刷物を全面又は−次元的に照明するので、印刷物
上の皺・汚れなどの透過光への影響を認識できず誤判別
を行ってしまっていた。(Problems to be Solved by the Invention) In the conventional printed matter discrimination method based on the frequency characteristics of a transmitted light signal, the printed matter is illuminated over the entire surface or in a -dimensional manner, so it is difficult to recognize the effects of wrinkles, dirt, etc. on the transmitted light on the printed matter. I was unable to do so and made a misjudgment.
これに対して反射光を受光したものは皺・汚れなどによ
る影響は判別できても印刷物検査におけるすかしの検査
が出来ないと言う欠点があった。On the other hand, those that receive reflected light have the disadvantage that although they can distinguish the effects of wrinkles, dirt, etc., they cannot inspect watermarks when inspecting printed matter.
また、色認識、磁気インクによる判別方法は処理時間が
長く、短時間に判別を行うという課題に問題がある。Further, the discrimination method using color recognition and magnetic ink requires a long processing time, and there is a problem in that discrimination can be performed in a short period of time.
［発明の構成］
（課題を解決する手段）
印刷物の判別を行う判別装置において、印刷物にスポッ
ト光を照射するスポット光照射手段と、このスポット光
照射手段の設置位置に印刷物を搬送させる搬送手段と、
上記スポット光照射手段に対して印刷物がどのような姿
勢で搬送されるてくるかをスポットの照射位置より前で
検出する姿勢検出手段と、この姿勢検出手段の検出結果
よりスポット光が印刷物に対して一次元的に照射するよ
うにスポット光の照射位置を調整するスポット光照射位
置調整手段と、スポット光照射手段により照射されたス
ポット光が印刷物に反射又は透過した光あるいはその両
方の光を検出する光検出手段と、上記光検出手段で検出
した出力信号と予め記録された印刷物の標阜信号とを比
較判別する判別手段とを具備した印刷物判別装置を提供
するものである。[Structure of the Invention] (Means for Solving the Problems) A discriminating device for discriminating printed matter includes a spot light irradiation means for irradiating a spot light onto the printed matter, a conveyance means for transporting the printed matter to a position where the spot light irradiation means is installed. ,
Attitude detection means detects in what attitude the printed matter is conveyed relative to the spot light irradiation means before the spot irradiation position; a spot light irradiation position adjustment means for adjusting the irradiation position of the spot light so that the spot light is irradiated one-dimensionally; and a spot light irradiation means that detects light reflected or transmitted by the printed matter, or both of the light emitted by the spot light irradiation means. The present invention provides a printed matter discriminating device comprising: a light detecting means for detecting the light detecting means; and a discriminating means for comparing and discriminating the output signal detected by the light detecting means and a pre-recorded mark signal of the printed matter.
（作用）
上述の装置を用いると、印刷物の所定の一次元的位置に
スポット光が照射されるようにし、この印刷物の所定の
一次元的位置に照射された光の反射光又は透過光あるい
はその両方を検出する。(Function) When the above-mentioned device is used, a spot light is irradiated on a predetermined one-dimensional position of the printed matter, and reflected light or transmitted light of the light irradiated on the predetermined one-dimensional position of the printed matter, or its Detect both.
これにより検出された印刷物の所定の一次元的位置の信
号特性を予め記録された印刷物の標孕信号と比較し、種
類、真偽等を判別するものである。The signal characteristics of a predetermined one-dimensional position of the detected printed matter are compared with the pre-recorded marking signal of the printed matter to determine the type, authenticity, etc.
このような装置を構成しようとすると、いくつかの問題
が生じてくる。まず、印刷物の所定の一次元的位置にス
ポット光を照射する手段であるが、通常の搬送機構では
印刷物が必ずしもある程度正確で一定の姿勢で搬送され
てはこないことである。Several problems arise when attempting to construct such a device. First, although it is a means for irradiating a spot light onto a predetermined one-dimensional position of a printed matter, the printed matter is not necessarily transported in a somewhat accurate and constant posture using a normal conveyance mechanism.
そのために姿勢を制御する手段が別個に必要になってく
る。これを実現するために、印刷物姿勢検出手段で印刷
物の搬送されてくる姿勢をスポット光の照射位置前で検
出するようにした。このように印刷物の姿勢を検出した
後にスポット光の照射位置を印刷物の姿勢に合わせて変
更していくか、印刷物の姿勢を搬送方向に合わせるかす
るように構成しなければならない。しかし実際的には搬
送されてくる印刷物の姿勢を迅速に精度よく揃えるのは
、一般に複雑な専用機構が必要である。更に印刷物の姿
勢を調整する手段も新札ならば破損度や印刷物の強度の
点などから問題となるような点は少ないが、何時間も使
用された後の印刷物に対して瞬時に行えるかという点で
多くの問題を残す。For this purpose, a separate means for controlling the posture is required. In order to realize this, the posture of the printed matter being conveyed is detected by the printed matter posture detecting means before the spot light irradiation position. After detecting the orientation of the printed matter in this manner, the irradiation position of the spot light must be changed in accordance with the orientation of the printed matter, or the orientation of the printed matter must be adjusted to match the conveyance direction. However, in practice, a complicated dedicated mechanism is generally required to quickly and precisely align the postures of the printed matter being conveyed. Furthermore, the method of adjusting the posture of printed matter is less of a problem when it comes to new banknotes due to the degree of damage and the strength of printed matter, but it is difficult to adjust the posture of printed matter instantly after it has been used for many hours. Leaves many problems at points.
送られてくる印刷物の姿勢に合わせてスポット光の照射
位置を変更調整した方が実用的である。そこでスポット
光照射位置調整手段を設け、スポット光の照射位置を調
整できるようにしたものである。It is more practical to change and adjust the irradiation position of the spot light according to the orientation of the printed matter being sent. Therefore, a spot light irradiation position adjusting means is provided so that the spot light irradiation position can be adjusted.
このような印刷物判別装置は、スポット光を用いて印刷
物の所定の一次元的位置を照明し、検査することになる
ので、従来の課題であった皺・汚れ等の影響を受けにく
い印刷物判別装置を提供することができる。また、印刷
物の一次元的位置上にすかし部分を横切るように設定す
ることで従来の色認識や、磁気インクによる判別方法で
は困難であったすかし部分の検査が可能となった。This kind of printed matter discrimination device uses spot light to illuminate and inspect a predetermined one-dimensional position of the printed matter, so it is less susceptible to the effects of wrinkles, dirt, etc., which were problems in the past. can be provided. Furthermore, by setting the watermark across the one-dimensional position of the printed matter, it has become possible to inspect the watermark, which was difficult to do using conventional color recognition or magnetic ink discrimination methods.
（実施例）
以下に本発明の印刷物判別装置の一実施例を図面を用い
て説明する。(Embodiment) An embodiment of the printed matter discrimination device of the present invention will be described below with reference to the drawings.
第１図ａに本実施例の全体の構成、第１図すに本実施例
のスポット光照射手段及びスポット光照射位置調整手段
の構成を示す。レーザ発振器（１）の光軸上にガルバノ
ミラ−（２）及びｆθレンズ（３）が設けられている。FIG. 1a shows the overall structure of this embodiment, and FIG. 1 shows the structure of the spot light irradiation means and the spot light irradiation position adjusting means of this embodiment. A galvanometer mirror (2) and an fθ lens (3) are provided on the optical axis of the laser oscillator (1).
ガルバノミラ−（２）はレーザ発振器（１）から出力さ
れたレーザ光を反射し搬送路（４）上で搬送方向と垂直
に走査され、ｆθレンズ（３）によって搬送路（４）上
で焦点を結ぶように配置されている。このレーザ光が搬
送路（４）上の照射される検査位置の搬送路（４）下方
にはレーザ光の走査範囲に合わせた受光面を有した導光
路（５ｂ）が設けられ、この導光路（５）の他端には受
光素子（５ａ）が接続されている。この受光素子（５ａ
）は出力結果を判別部（６）に送信可能なように接続さ
れている。このレーザ光が搬送路（４）上の照射される
検査位置より搬送路（４）上の印刷物投入側の位置に印
刷物が搬送方向に対して垂直に送られてきているかを検
出するためのラインセンサ（７）が設けられている。こ
のラインセンサ（７）の出力結果は演算部（８）に送ら
れる。また、演算部（８）はその演算結果を判別部（６
）に送れるように接続が成されているものである。さら
に搬送路（４）の印刷物投入側には印刷物送り機構（４
ａ）が設けられており、印刷物を一枚ずつ順次搬送路（
４）に送り込めるようになっている。また、搬送路（４
）の検査位置の後方には分別機構（４ｂ）が設けてあり
、この分別機構（４ｂ）は駆動機構（９）により送られ
てきた印刷物を収納容器Ａ、Ｂ、Ｃ，Ｄに分別する。ま
た、駆動機構（９）は判断部（６）の判別結果より制御
されるように接続されている。更にレーザ発振器（１）
、搬送路（４）、印刷物送り機構（４ａ）、判別部（６
）及び演算部（８）を制御可能に制御部（１０）が設け
られ接続されている。The galvano mirror (2) reflects the laser beam output from the laser oscillator (1), is scanned on the conveyance path (4) perpendicular to the conveyance direction, and is focused on the conveyance path (4) by the fθ lens (3). arranged to connect. A light guide path (5b) having a light receiving surface matching the scanning range of the laser beam is provided below the transport path (4) at the inspection position where the laser beam is irradiated on the transport path (4). A light receiving element (5a) is connected to the other end of (5). This light receiving element (5a
) is connected so as to be able to transmit the output result to the discriminator (6). A line for detecting whether the printed matter is being fed perpendicularly to the conveying direction from the inspection position where this laser light is irradiated on the conveying path (4) to the print input side position on the conveying path (4). A sensor (7) is provided. The output result of this line sensor (7) is sent to the calculation section (8). Further, the calculation unit (8) uses the calculation result as the discrimination unit (6).
) is connected so that it can be sent to Further, a print feed mechanism (4) is provided on the print input side of the conveyance path (4).
a) is provided, and the printed matter is sequentially conveyed one by one through the conveyance path (
4). In addition, the conveyance path (4
) A sorting mechanism (4b) is provided behind the inspection position, and this sorting mechanism (4b) sorts the printed matter sent by the drive mechanism (9) into storage containers A, B, C, and D. Further, the drive mechanism (9) is connected so as to be controlled based on the determination result of the determination section (6). Furthermore, a laser oscillator (1)
, conveyance path (4), printed matter feeding mechanism (4a), discrimination section (6
) and the arithmetic unit (8) are provided and connected to the control unit (10).
以下に上述の印刷物判別装置の作用を説明する。The operation of the above-mentioned printed matter discrimination device will be explained below.
制御部（１０）の指令により印刷物送り機構（４ａ）に
投入された印刷物束より印刷物ａが一枚ずつ搬送路（４
）に送り込まれる。印刷物ａがラインセンサ（７）の上
を通過すると、順次ラインセンサ（７）は印刷物ａの上
下端の位置を検出する。このラインセンサ（７）の検出
結果を受信した演算部（８）は印刷物ａの上下端の位置
より、印刷物ａの姿勢を求める。The printed matter a is sent one by one to the conveying path (4
). When the printed material a passes over the line sensor (7), the line sensor (7) sequentially detects the positions of the upper and lower ends of the printed material a. The calculation unit (8) that receives the detection result of the line sensor (7) determines the orientation of the printed material a from the positions of the upper and lower ends of the printed material a.
この求められた印刷物ａの姿勢より印刷物ａの縦幅の中
央にレーザ光が照射されるようなガルバノミラ−（２）
の角度を演算し、ガルバノミラ−（２）に角度指定命令
を、更に判別部（８）にガルバノミラ−（２）によって
反射されたレーザ光の導光路（５ｂ）受光面上の照射位
置データを送信する。制御部（ｌＯ）はここでレーザ発
振器（１）に指令を出しレーザ光を照射させる。この照
射されたレーザ光ａはガルバノミラ−（２）に反射し、
ｆθレンズ（３）を透過し検査位置に送られてきた印刷
物ａの所定部分に照射させられる。このとき、印刷物ａ
の送られてきた姿勢が第２図の実線で画かれた場合のよ
うに搬送方向に対して一点鎖線で画かれた平行な姿勢で
はない場合にもラインセンサ（７）により常に印刷物ａ
の姿勢を検出し、ガルバノミラ−（２）の角度を調整し
ているため、レーザ光は常に印刷物ａの縦幅の中央の線
１−１ ’を照射することとなる。A galvanometer mirror (2) that irradiates the laser beam to the center of the vertical width of the printed material a based on the determined posture of the printed material a.
calculates the angle of, sends an angle designation command to the galvano mirror (2), and further transmits irradiation position data on the light guide path (5b) light receiving surface of the laser beam reflected by the galvano mirror (2) to the discrimination unit (8). do. The control unit (lO) then issues a command to the laser oscillator (1) to irradiate the laser beam. This irradiated laser beam a is reflected by the galvanometer mirror (2),
The light passes through the fθ lens (3) and is irradiated onto a predetermined portion of the printed matter a sent to the inspection position. At this time, printed matter a
Even when the orientation of the printed material a is not parallel to the transport direction as depicted by the dashed line in Fig. 2, the line sensor (7) always detects the printed matter a.
Since the attitude of the printed material a is detected and the angle of the galvano mirror (2) is adjusted, the laser beam always irradiates the line 1-1' in the vertical width of the printed material a.
この８１＋−１’上に照射されたレーザ光は搬送路（４
）の下方に設けられた導光路（５ｂ）の受光面より入射
し導光路（５ａ）下部に接続された受光素子（５ａ）に
よって受光され、その検出結果を判別部（６）に送る。The laser beam irradiated onto this 81+-1' is
) enters the light receiving surface of the light guide (5b) provided below, is received by the light receiving element (5a) connected to the lower part of the light guide (5a), and sends the detection result to the discriminator (6).
検出信号を受信した判別部（６）は、送られてきた検出
信号を図示しない判別部（６）内部、に設けられたメモ
リに記憶された３種類の印刷物り、Ｍ、Ｎの中央の線１
−１ ’上の標準データ信号と比較する。The discriminating unit (6) that received the detection signal detects the sent detection signal by detecting the center line of three types of printed matter, M and N, stored in a memory provided inside the discriminating unit (6) (not shown). 1
-1' Compare with the standard data signal above.
ここで検出された印刷物ａの中央の線ｔ−ｔ’上の検出
信号の波形ａを第３図ａに、メモリに記録されている３
種類の印刷物り、Ｍ、Ｎの中央の線１−１゜上の標準デ
ータ信号の波形１．ｍ： ｎ’ｆ：：第３図１２ｍ、ｎ
に示す。判別部は検出信号の波形ａと、メモリ内の波形
１．ｍ、ｎとの比較を始める。もし、波形ａが波形１に
対して同−若しくは定められた誤差範囲内にある時、印
刷物ａは印刷物してあると判別し、判別部（６）はこの
判別結果を駆動機構（９）に送信する。駆動機構（９）
はこの判別信号により分別機構（ｌＯ）を作動させ、印
刷物ａを収納容器Ａに搬送する。もし、波形ａが波形ｍ
に対して同−若しくは定められた誤差範囲内にある場合
は印刷物ａを収納容器Ｂへ、波形ａが波形ｎに対して同
−若しくは定められた誤差範囲内にある場合は印刷物ａ
を収納容器Ｃへ、そのいずれにも一致若しくは類似して
いなければ印刷物ａを収納容器りへ搬送するものである
。以下、順次印刷物送り機ｊＭ（４ａ）より送られてく
る印刷物を上述の動作によって判別して行くものである
。The waveform a of the detection signal on the center line t-t' of the printed matter a detected here is shown in FIG.
Waveform 1 of the standard data signal on the center line 1-1° of the types of printed matter, M and N. m: n'f:: Fig. 3 12m, n
Shown below. The determination unit uses the waveform a of the detection signal and the waveform 1 in the memory. Start comparing m and n. If waveform a is the same as waveform 1 or within a predetermined error range, it is determined that printed matter a is a printed matter, and the determining section (6) sends this determination result to the drive mechanism (9). Send. Drive mechanism (9)
operates the sorting mechanism (lO) in response to this discrimination signal, and transports the printed matter a to the storage container A. If waveform a is waveform m
If waveform a is the same as waveform n or within a specified error range, print a is placed in storage container B. If waveform a is the same as waveform n or within a specified error range, print a
If they do not match or resemble any of them, the printed matter a is transported to the storage container C. Thereafter, the printed matter sequentially sent from the printed matter feeder jM (4a) is discriminated by the above-described operation.
このように検査対象である印刷物の定められた線上の信
号を検出することにより、皺・汚れなどに影響されにく
い紙弊判別ができる。In this way, by detecting signals on a defined line of the printed matter to be inspected, it is possible to determine whether the paper is defective or not, which is less affected by wrinkles, dirt, etc.
また、本実施例ではスポット光の光路を調整することに
よって印刷物に照射位置を調整したが、これは搬送路側
に印刷物の姿勢を制御するような特別な搬送機構を設け
ることによって照射位置を常に同じになるようにしても
よいことは言うまでもない。In addition, in this example, the irradiation position on the printed matter was adjusted by adjusting the optical path of the spot light, but this is possible by providing a special transport mechanism on the transport path side that controls the posture of the printed matter so that the irradiation position is always the same. Needless to say, it is also possible to do so.
なお、本実施例ではスポット光が一つである印刷物判別
装置を説明したが、これは基本的な作用を説明するため
でありスポット光を複数用いることで、判別精度を向上
させることは言うまでもない。すなわち、本発明はスポ
ット光を用い、被検査印刷物の所定の一次元的位置の検
出データと、印刷物の持つ標準データとを比較すること
により印刷物の判別を行うようにしたものであればよい
ものである。Note that in this embodiment, a printed matter discrimination device using a single spotlight has been described, but this is for explaining the basic operation, and it goes without saying that the discrimination accuracy can be improved by using multiple spotlights. . That is, the present invention may be any method as long as it uses spot light to identify printed matter by comparing detected data at a predetermined one-dimensional position of the printed matter to be inspected with standard data of the printed matter. It is.
［発明の効果］
上述のように本発明はスポット光を用い、被検査印刷物
の所定の一次元的位置の検出データと、印刷物の持つ標
準データとを比較することにより印刷物の判別を行うこ
とにより、従来の印刷物判別方法では誤検出の原因にな
った皺・汚れの影響を押さえ、高速に検査を行えるよう
にしたものである。[Effects of the Invention] As described above, the present invention uses spot light to identify printed matter by comparing detected data at a predetermined one-dimensional position of the printed matter to be inspected with standard data of the printed matter. This method suppresses the effects of wrinkles and dirt, which caused false detection in conventional printed matter discrimination methods, and enables high-speed inspection.
【図面の簡単な説明】
第１図は本発明の一実施例の構成を示した構成図、第２
図は搬送装置によって運ばれる印刷物の姿勢を説明する
ための状態図、第３図は本発明の判断方法を説明するた
めの波形図である。
１・・・レーザ発振器、 ２・・・ガルバノミラ−１
３・・・ｆθレンズ、 ４・・・搬送路、５ａ・・
・受光素子、 ５ｂ・・・導光路６・・・判別部、
７・・・ラインセンサ、８・・・演算部、
９・・・駆動機構、ｌＯ・・・制御部[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a configuration diagram showing the configuration of an embodiment of the present invention;
The figure is a state diagram for explaining the attitude of printed matter carried by the conveying device, and FIG. 3 is a waveform diagram for explaining the determination method of the present invention. 1... Laser oscillator, 2... Galvano mirror 1
3... fθ lens, 4... conveyance path, 5a...
- Light receiving element, 5b... Light guide path 6... Discrimination section,
7... Line sensor, 8... Arithmetic unit,
9... Drive mechanism, lO... Control unit
Claims (1)
ット光を照射するスポット光照射手段と、このスポット
光照射手段の設置位置に印刷物を搬送させる搬送手段と
、上記スポット光照射手段の所定の位置に対して印刷物
がどのような姿勢で搬送されるてくるかをスポットの照
射位置より前で検出する姿勢検出手段と、この姿勢検出
手段の検出結果よりスポット光が印刷物に対して一次元
的に照射するようにスポット光の照射位置を調整するス
ポット光照射位置調整手段と、前記スポット光照射手段
により照射されたスポット光が印刷物に反射又は透過し
た光あるいはその両方の光を検出する光検出手段と、上
記光検出手段で検出した出力信号と予め記録された印刷
物の標準信号とを比較判別する判別手段とを具備したこ
とを特徴とする印刷物判別装置。In a discrimination device for discriminating printed matter, a spot light irradiation means for irradiating a spot light onto the printed matter, a conveying means for transporting the printed matter to a position where the spot light irradiation means is installed, and a spot light irradiation means for conveying the printed matter to a predetermined position of the spot light irradiation means. an attitude detection means for detecting the attitude of the printed matter being conveyed before the spot irradiation position; and a spot light irradiates the printed matter one-dimensionally based on the detection result of this attitude detection means. a spot light irradiation position adjustment means for adjusting the irradiation position of the spot light, and a light detection means for detecting light reflected or transmitted by the printed matter, or both, from the spot light irradiated by the spot light irradiation means; A printed matter discriminating device comprising: a discriminating means for comparing and discriminating the output signal detected by the light detecting means and a prerecorded standard signal of the printed matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8315488A JPH01255982A (en) | 1988-04-06 | 1988-04-06 | Printed matter discriminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8315488A JPH01255982A (en) | 1988-04-06 | 1988-04-06 | Printed matter discriminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01255982A true JPH01255982A (en) | 1989-10-12 |
Family
ID=13794324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8315488A Pending JPH01255982A (en) | 1988-04-06 | 1988-04-06 | Printed matter discriminating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01255982A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816752A (en) * | 1994-06-27 | 1996-01-19 | Nec Corp | Device and method for inputting fingerprint image |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394995A (en) * | 1977-01-28 | 1978-08-19 | Nippon Signal Co Ltd:The | Method and apparatus for examining banknotes |
| JPS53100895A (en) * | 1977-02-15 | 1978-09-02 | Nippon Signal Co Ltd:The | Inspecting method and apparatus for bank notes |
| JPS54935A (en) * | 1977-06-06 | 1979-01-06 | Hitachi Ltd | Pattern detector |
| JPS5640972A (en) * | 1979-09-10 | 1981-04-17 | Toshiba Corp | Optical character reader |
-
1988
- 1988-04-06 JP JP8315488A patent/JPH01255982A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394995A (en) * | 1977-01-28 | 1978-08-19 | Nippon Signal Co Ltd:The | Method and apparatus for examining banknotes |
| JPS53100895A (en) * | 1977-02-15 | 1978-09-02 | Nippon Signal Co Ltd:The | Inspecting method and apparatus for bank notes |
| JPS54935A (en) * | 1977-06-06 | 1979-01-06 | Hitachi Ltd | Pattern detector |
| JPS5640972A (en) * | 1979-09-10 | 1981-04-17 | Toshiba Corp | Optical character reader |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816752A (en) * | 1994-06-27 | 1996-01-19 | Nec Corp | Device and method for inputting fingerprint image |
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