JPH04129948A - Medium detecting device of medium conveyer - Google Patents
Medium detecting device of medium conveyerInfo
- Publication number
- JPH04129948A JPH04129948A JP25082190A JP25082190A JPH04129948A JP H04129948 A JPH04129948 A JP H04129948A JP 25082190 A JP25082190 A JP 25082190A JP 25082190 A JP25082190 A JP 25082190A JP H04129948 A JPH04129948 A JP H04129948A
- Authority
- JP
- Japan
- Prior art keywords
- medium
- air
- pressure sensor
- jet port
- air outlet
- 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 abstract description 15
- 238000000034 method Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 239000002609 medium Substances 0.000 description 34
- 230000007257 malfunction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
Landscapes
- Controlling Sheets Or Webs (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、紙葉類等の媒体を搬送する媒体搬送装置に使
用し、媒体の有無を検出するための媒体検出装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a medium detection device used in a medium conveyance device that conveys a medium such as a paper sheet, and for detecting the presence or absence of a medium.
紙葉類等の媒体を搬送する媒体搬送装置に使用し、媒体
の有無を検出するための非接触式の従来の媒体検出装置
は、投光器から媒体に対して光を投射し、その光を受光
器で受け、投光器と受光器の間を媒体が通過するときの
受光器の光量の変化を検出する方式のものである。Conventional non-contact media detection devices used in media transport devices that transport media such as paper sheets to detect the presence or absence of media project light onto the media from a projector and receive the light. This method detects changes in the amount of light from the light receiver when the medium passes between the light emitter and the light receiver.
上述したような従来の光学式の媒体検出装置は、受光器
の光量の変化を検出する方式のものであるため、投光器
や受光器に塵埃等が付着すると誤動作を起し、また、強
い外乱光によっても誤動作を起すという欠点がある。こ
のため、塵埃が多い場所や直射日光の当る場所では使用
できないという問題点を有している。Since the conventional optical medium detection device described above detects changes in the light intensity of the light receiver, it may malfunction if dust or the like adheres to the emitter or receiver, and it may also be susceptible to strong disturbance light. However, it also has the disadvantage of causing malfunctions. Therefore, there is a problem that it cannot be used in a place with a lot of dust or in a place exposed to direct sunlight.
本発明の媒体搬送装置の媒体検出装置は、媒体搬送路に
設けた空気噴出口と、前記空気噴出口に対して圧縮空気
を供給する空気圧縮機と、前記空気噴出口と前記空気圧
縮機とを連結する空気ポースと、前記空気噴出口から噴
出した空気を検出する圧力センサと、前記圧力センサか
らの信号を処理して媒体の有無に関する信号を送出する
信号処理回路とを備えている。A medium detection device of a medium conveyance device according to the present invention includes an air jet port provided in a medium transport path, an air compressor that supplies compressed air to the air jet port, and a combination of the air jet port and the air compressor. , a pressure sensor that detects the air ejected from the air ejection port, and a signal processing circuit that processes the signal from the pressure sensor and sends a signal regarding the presence or absence of the medium.
すなわち、本発明の媒体搬送装置の媒体検出装置は、媒
体搬送路に媒体の搬送方向に対して垂直方向の上方に配
設された空気噴出口と、前記空気噴出口に対して圧縮空
気を供給する空気圧縮機と、前記空気噴出口と前記空気
圧縮機とを連結する空気ホースと、前記媒体の搬送方向
に対して前記空気噴出口の反対側に設けられ前記空気噴
出１］から噴出した空気を検出する圧力センサと、萌記
圧カセンサからの信号を処理して媒体の有無に関する信
号を送出する信号処理回路とを備えている。That is, the medium detection device of the medium conveyance device of the present invention includes an air jet port disposed above the medium transport path in a direction perpendicular to the medium transport direction, and compressed air is supplied to the air jet port. an air compressor, an air hose that connects the air jet port and the air compressor, and air jetted from the air jet 1 provided on the opposite side of the air jet port with respect to the conveyance direction of the medium. The pressure sensor detects the pressure sensor, and the signal processing circuit processes the signal from the pressure sensor and sends a signal regarding the presence or absence of the medium.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
第１図において、空気圧縮機１は、空気噴出口３に対し
て圧縮空気を供給する。空気ホース２は、空気噴出口３
と空気圧縮機１とを連結して空気圧縮機１からの圧縮空
気を空気噴出口３に送る。空気噴出口３は、媒体４の搬
送方向Ａに対して垂直方向の上方に配設されており、媒
体４に対して圧縮空気を噴出する。圧力センサ５は、媒
体４の搬送方向Ａに対して空気噴出口３の反対側に設け
られており、空気噴出口３から噴出する圧縮空気の圧力
を検出する。信号処理回路６は、圧力センサ５からの信
号を入力して処理し、「媒体有」検出信号１０２または
［媒体無］検出信号１０３を送出する。In FIG. 1, an air compressor 1 supplies compressed air to an air outlet 3. As shown in FIG. The air hose 2 has an air outlet 3
and an air compressor 1 are connected, and compressed air from the air compressor 1 is sent to an air jet port 3. The air jet port 3 is disposed above the conveyance direction A of the medium 4 in a direction perpendicular to the medium 4, and jets compressed air to the medium 4. The pressure sensor 5 is provided on the opposite side of the air jet port 3 with respect to the transport direction A of the medium 4, and detects the pressure of compressed air jetted from the air jet port 3. The signal processing circuit 6 inputs and processes the signal from the pressure sensor 5, and sends out a “medium present” detection signal 102 or a “medium absent” detection signal 103.
上述のように構成した媒体検出装置は、媒体４が空気噴
出口３と圧力センサ５の間にないときは、圧力センサ５
が空気噴出口３が噴出する圧縮空気の強い圧力を検出す
るため、信号処理回路６は「媒体無」検出信号１０３を
送出する。媒体４が搬送方向Ａに進行して空気噴出口３
と圧力センサ５の間に入ると、媒体４が空気噴出口３が
噴出する圧縮空気を遮るため、圧力センサ５は空気噴出
口３が噴出する圧縮空気の圧力を検出しなくなる。この
ため信号処理回路６は、「媒体有」検出信号１０２を送
出する。The medium detection device configured as described above detects the pressure sensor 5 when the medium 4 is not between the air jet port 3 and the pressure sensor 5.
In order to detect the strong pressure of the compressed air ejected from the air ejection port 3, the signal processing circuit 6 sends out a "no medium" detection signal 103. The medium 4 advances in the transport direction A and reaches the air jet port 3.
When the medium 4 enters between the air outlet 3 and the pressure sensor 5, the medium 4 blocks the compressed air ejected by the air outlet 3, so that the pressure sensor 5 no longer detects the pressure of the compressed air ejected by the air outlet 3. For this reason, the signal processing circuit 6 sends out a "medium presence" detection signal 102.
以」１説明したように、本発明の媒体搬送装置の媒体検
出装置は、圧縮空気によって媒体の有無の検出を行うた
め、塵埃や強い外乱光によって誤動作が発生するのを防
止することができるという効果がある。また、圧縮空気
を噴出するため、装置の周辺や媒体を清掃できるという
効果もある。As described above, the medium detection device of the medium conveyance device of the present invention uses compressed air to detect the presence or absence of a medium, so it is possible to prevent malfunctions caused by dust or strong ambient light. effective. Additionally, since compressed air is ejected, the area around the device and the medium can be cleaned.
第１図は本発明の一実施例を示す正面図である。
１・・・・・・空気圧縮機、２・・・・−・空気ホース
、３・・・・・・空気噴出口、４・・・・・・媒体、５
・・・・・・圧力センサ、６・・・・・信号処理回路。FIG. 1 is a front view showing an embodiment of the present invention. 1...Air compressor, 2...-Air hose, 3...Air outlet, 4...Medium, 5
......Pressure sensor, 6...Signal processing circuit.
Claims (1)
に対して圧縮空気を供給する空気圧縮機と、前記空気噴
出口と前記空気圧縮機とを連結する空気ホースと、前記
空気噴出口から噴出した空気を検出する圧力センサと、
前記圧力センサからの信号を処理して媒体の有無に関す
る信号を送出する信号処理回路とを備えることを特徴と
する媒体搬送装置の媒体検出装置。 ２、媒体搬送路に媒体の搬送方向に対して垂直方向の上
方に配設された空気噴出口と、前記空気噴出口に対して
圧縮空気を供給する空気圧縮機と、前記空気噴出口と前
記空気圧縮機とを連結する空気ホースと、前記媒体の搬
送方向に対して前記空気噴出口の反対側に設けられ前記
空気噴出口から噴出した空気を検出する圧力センサと、
前記圧力センサからの信号を処理して媒体の有無に関す
る信号を送出する信号処理回路とを備えることを特徴と
する媒体搬送装置の媒体検出装置。[Scope of Claims] 1. An air outlet provided in a medium conveyance path, an air compressor that supplies compressed air to the air outlet, and an air outlet that connects the air outlet and the air compressor. a hose, a pressure sensor that detects air ejected from the air outlet;
A medium detection device for a medium transport device, comprising: a signal processing circuit that processes a signal from the pressure sensor and sends a signal regarding the presence or absence of a medium. 2. an air outlet disposed above the medium conveyance path in a direction perpendicular to the conveyance direction of the medium; an air compressor that supplies compressed air to the air outlet; an air hose that connects the air compressor; and a pressure sensor that is provided on the opposite side of the air outlet with respect to the conveyance direction of the medium and detects air ejected from the air outlet;
A medium detection device for a medium transport device, comprising: a signal processing circuit that processes a signal from the pressure sensor and sends a signal regarding the presence or absence of a medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25082190A JPH04129948A (en) | 1990-09-20 | 1990-09-20 | Medium detecting device of medium conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25082190A JPH04129948A (en) | 1990-09-20 | 1990-09-20 | Medium detecting device of medium conveyer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04129948A true JPH04129948A (en) | 1992-04-30 |
Family
ID=17213537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25082190A Pending JPH04129948A (en) | 1990-09-20 | 1990-09-20 | Medium detecting device of medium conveyer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04129948A (en) |
-
1990
- 1990-09-20 JP JP25082190A patent/JPH04129948A/en active Pending
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