JPH07139915A - Detecting apparatus - Google Patents
Detecting apparatusInfo
- Publication number
- JPH07139915A JPH07139915A JP28470893A JP28470893A JPH07139915A JP H07139915 A JPH07139915 A JP H07139915A JP 28470893 A JP28470893 A JP 28470893A JP 28470893 A JP28470893 A JP 28470893A JP H07139915 A JPH07139915 A JP H07139915A
- Authority
- JP
- Japan
- Prior art keywords
- type sensor
- reflection
- plate
- actuator
- reflecting
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、画像形成装置内に設け
られる検知装置に関し、特には各部の状態を検知する反
射型センサー部を制御基板上に配置した検知装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection device provided in an image forming apparatus, and more particularly to a detection device in which a reflection type sensor section for detecting the state of each section is arranged on a control board.
【０００２】[0002]
【従来の技術】画像形成装置内には、用紙の有無、ある
いは用紙の通過状態を検知するために、また種々の可動
部の動作状態を検知するために多くのセンサ（検知装
置）が用いられている。この検知装置の中には、通常の
マイクロスイッチのほかに、アクチュエータの移動状態
を検知する近接スイッチ、フォトインタラプタ型のフォ
トスイッチ、あるいは反射型センサー等も多く用いられ
ている。例えば、反射型センサーを給紙部の用紙の有無
の検出に使用した場合、用紙の有無に応じて反射型セン
サーに対し接近離脱可能にアクチュエータの配置を行っ
ている。2. Description of the Related Art In an image forming apparatus, many sensors (detection devices) are used to detect the presence or absence of a sheet or the passing state of a sheet and to detect the operating states of various movable parts. ing. In addition to a normal micro switch, a proximity switch that detects a moving state of an actuator, a photo interrupter type photo switch, a reflection type sensor, and the like are often used in this detection device. For example, when the reflection type sensor is used to detect the presence / absence of paper in the paper feed unit, the actuator is arranged so that it can approach and separate from the reflection type sensor according to the presence / absence of paper.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の構造のものでは、画像形成装置内の状態を検
知するセンサ部のアクチュエータは、その作動量が大き
く、反射型センサにアクチュエータを接近させたとき、
それらの部品寸法や組み付け寸法のばらつき等により、
反射型センサーに対するアクチュエータの正確な位置決
めができず、誤動作してしまう問題点がある。そして、
アクチュエータ部とセンサ部の位置関係を安定させるに
は高い寸法精度が必要とされコスト的な問題が発生する
という問題点がある。However, in such a conventional structure, the actuator of the sensor section for detecting the state in the image forming apparatus has a large operation amount, and the actuator is brought close to the reflection type sensor. When
Due to variations in those parts dimensions and assembly dimensions,
There is a problem that the actuator cannot be accurately positioned with respect to the reflection type sensor and malfunctions. And
High dimensional accuracy is required to stabilize the positional relationship between the actuator section and the sensor section, which causes a problem in terms of cost.
【０００４】本発明は上述した問題点を解決するために
なされたものであり、その目的は、安価で、正確な検知
を行うことを可能にした検知装置を提供することにあ
る。The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a detection device which is inexpensive and enables accurate detection.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
に本発明の検知装置には、発光部と受光部を有する反射
型センサー手段と、その反射型センサー手段の信号を処
理する制御素子を含む制御基板と、装置内を移動すべく
供給される被測定物との接触に応じて変位するアクチュ
エータ部と、そのアクチュエータ部に設けられ前記アク
チュエータ部の変位に基づいて前記反射型センサー手段
と近接し前記反射型センサー手段を作動させる反射板と
から成る反射型センサー作動機構とを備えた検知装置に
おいて、前記反射板が前記反射型センサーに近接した時
に、前記反射板と前記反射型センサーとの高さを規制す
る規制部材を設けている。In order to achieve this object, the detection device of the present invention comprises a reflective sensor means having a light emitting portion and a light receiving portion, and a control element for processing a signal of the reflective sensor means. An actuator section that is displaced in response to a contact between a control board that includes the object and an object to be measured that is supplied to move in the apparatus; In a detection device having a reflection type sensor operating mechanism including a reflection plate that operates the reflection type sensor means, when the reflection plate approaches the reflection type sensor, the reflection plate and the reflection type sensor A regulating member for regulating the height is provided.
【０００６】尚、規制部材は半円形状であってもよい。The regulating member may have a semicircular shape.
【０００７】[0007]
【作用】上記の構成を有する本発明の検知装置は、画像
形成装置内を移動すべく供給される被測定物との接触に
応じて、前記アクチュエータ部が揺動し、そのアクチュ
エータ部に設けられた反射板が前記アクチュエータ部の
変位に基づいて前記反射型センサー手段と近接し、前記
反射型センサー手段を作動させる。その際、前記反射板
と前記反射型センサーとの高さを規制する規制部材によ
り、その高さの規制を行う。In the detecting device of the present invention having the above-mentioned structure, the actuator section is swung in response to the contact with the object to be measured which is supplied to move in the image forming apparatus. The reflective plate approaches the reflective sensor means based on the displacement of the actuator part, and activates the reflective sensor means. At that time, the height of the reflective plate and the reflective sensor is regulated by a regulating member that regulates the height.
【０００８】[0008]
【実施例】以下、この考案の搬送用紙検知装置の一実施
例について図面を参照しつつファクシミリの原稿自動給
送装置に採用した場合を例にとって詳述する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the conveying paper detecting device of the present invention will be described in detail below with reference to the drawings, taking the case of being adopted as an automatic document feeder for a facsimile.
【０００９】本ファクシミリ装置には搬送手段が取付け
てあり、この搬送手段は原稿シュート面９に沿って原稿
からなる用紙１０を給排送する図示しないギヤー及び駆
動モータの組合せで構成されている。また、用紙を供給
するためのローラ１と排紙するためのローラー２が前記
搬送ギヤーと連結しており分離手段３により分離した用
紙を搬送するようになっている。A conveying means is attached to the facsimile apparatus, and the conveying means is constituted by a combination of a gear and a drive motor (not shown) for feeding and discharging the sheet 10 made of the original along the original chute surface 9. Further, a roller 1 for supplying a sheet and a roller 2 for ejecting the sheet are connected to the conveying gear so that the sheet separated by the separating means 3 is conveyed.
【００１０】かかる装置にあっては搬送過程の用紙を検
出する必要があり、これを例えば搬送された用紙の後端
を検知し、これを基準に所定時間後に搬送手段を用紙を
複写基準位置にセットするための図示反射型センサー４
によって行う。その反射型センサーは本体装置内に取り
付けられた制御素子を含む制御基板５に配置されてい
る。In such an apparatus, it is necessary to detect the sheet in the process of being conveyed. For example, the trailing edge of the conveyed sheet is detected, and the sheet is conveyed to the reference position for copying after a predetermined time with reference to this. Illustrated reflective sensor 4 for setting
Done by. The reflective sensor is arranged on a control board 5 including a control element mounted in the main body.
【００１１】機枠の原稿シュート面の下面には開口部を
有する取り付け部材７が設けられており、その取り付け
部材７は垂下片からなるアクチュエータ６を揺動自在に
支承している。そして、前記アクチュエータ６の先端部
を用紙の搬送経路に臨ませる構成となっている。。図示
のものは樹脂製のアクチュエータ６の回転軸部を前記取
り付け部材７に軸承してある。前記アクチュエータ６の
回転軸部の両端はu字型になるように溝を設けた形状を
しており、その形状部の弾性を利用し、開口した前記取
り付け部材７にはめこみ、揺動可能になっている。この
時、前記制御基板５が前記アクチュエータ６の揺動量を
制限し前記取り付け部材７の開口部とアクチュエータ６
の回転軸部の溝が平行となって、アクチュエータ６が取
り付け部材７から外れることを防止する外れ防止部材と
なっている。A mounting member 7 having an opening is provided on the lower surface of the document chute surface of the machine frame, and the mounting member 7 rotatably supports an actuator 6 composed of a hanging piece. Then, the front end of the actuator 6 is made to face the sheet conveyance path. . In the illustrated example, the rotary shaft portion of the resin actuator 6 is supported by the mounting member 7. Both ends of the rotary shaft portion of the actuator 6 are formed in a groove so as to have a u-shape, and by utilizing the elasticity of the shape portion, they can be fitted into the opened mounting member 7 and can be swung. ing. At this time, the control board 5 limits the amount of swing of the actuator 6 to limit the opening of the mounting member 7 and the actuator 6.
The grooves of the rotating shaft portion are parallel to each other, which serves as a detachment preventing member that prevents the actuator 6 from coming off the mounting member 7.
【００１２】そしてアクチュエータ６の基端部である反
射板８は反射型センサーからなる検知手段に係合しお
り、用紙の有無に応じて変位するのにともない検知動作
をおこなう。このとき、部品寸法等のばらつきによる前
記反射板８と反射型センサーの高さのずれを半円形状の
高さ規制板１１を設けて、前記制御基板に接触させるこ
とで前記制御基板と反射板８との距離は前記半円形状の
高さ規制板１１の半径に相当し、前記反射型センサーと
反射板との高さを規制するようになっている。The reflecting plate 8 which is the base end of the actuator 6 is engaged with the detecting means composed of a reflection type sensor, and performs the detecting operation as it is displaced depending on the presence or absence of the paper. At this time, the height difference between the reflection plate 8 and the reflection type sensor due to variations in component dimensions and the like is provided with a semi-circular height regulating plate 11, and the control substrate and the reflection plate are brought into contact with the control substrate. The distance to 8 corresponds to the radius of the semi-circular height regulating plate 11, and regulates the height between the reflective sensor and the reflecting plate.
【００１３】図示に示すように用紙が前記ローラ１によ
って前記原稿シュート面９に沿って移動し、その用紙が
前記アクチュエータ６の先端部と接触すると、前記アク
チュエータ６は前記取り付け部材７に支承された前記ア
クチュエータ６の回転軸を中心に揺動する。それにとも
ない、前記アクチュエータ６の終端に設けられた反射板
８が前記反射型センサーが離れ、用紙の検知をおこな
う。As shown in the figure, when the sheet moves along the document chute surface 9 by the roller 1 and the sheet comes into contact with the tip of the actuator 6, the actuator 6 is supported by the mounting member 7. The actuator 6 swings around the rotation axis of the actuator 6. Along with that, the reflection plate 8 provided at the end of the actuator 6 is separated from the reflection type sensor to detect the sheet.
【００１４】用紙が搬送され用紙の後端が通過した後、
前記アクチュエータ６は前記回転軸を中心とし、その自
重により前記反射型センサーに接近する。その際、前記
反射板８に設けられた高さ規制板１１が前記制御基板５
と接触し前記反射板８と前記反射型センサー４との高さ
規制を行う。従って、前記反射型センサー４と反射板８
との距離が安定させることができるので正確に用紙通過
の検出ができる。After the paper is conveyed and the trailing edge of the paper has passed,
The actuator 6 is centered on the rotation axis and approaches the reflection type sensor by its own weight. At that time, the height regulating plate 11 provided on the reflecting plate 8 is attached to the control board 5.
And the height of the reflection plate 8 and the reflection type sensor 4 is regulated. Therefore, the reflection type sensor 4 and the reflection plate 8
Since the distance between and can be stabilized, the paper passage can be accurately detected.
【００１５】また、上記反射型センサー４は、搬送手段
が原稿シュート面上の用紙１０を排出する際に搬送手段
の起動から所定時間経過しても用紙が到達しないとき、
用紙ジャムとして装置の作動を停止する。Further, the reflection type sensor 4 is configured such that when the conveying means ejects the sheet 10 on the document chute surface, when the sheet does not arrive even after a lapse of a predetermined time from the activation of the conveying means,
The device stops operating as a paper jam.
【００１６】尚、上記実施例では、用紙の後端を検出し
ているが、用紙の先端を検出する検知装置やカバー等の
開閉を検出する検出装置等各種の検出に用いることがで
きる。In the above embodiment, the trailing edge of the sheet is detected, but it can be used for various detections such as a detecting apparatus for detecting the leading edge of the sheet and a detecting apparatus for detecting opening / closing of the cover.
【００１７】変形例として、上記実施例においては、規
制板は反射板の下面に設けられているが、前記制御基板
の上面に設けてもよい。As a modification, in the above embodiment, the regulation plate is provided on the lower surface of the reflection plate, but it may be provided on the upper surface of the control board.
【００１８】[0018]
【発明の効果】以上説明した事から明らかなように、作
動状態を検知するアクチュエータ部による変位において
反射型センサと反射板との高さの規制が可能であり、反
射型センサの最適な高さに反射板を配置できるので、動
作が安定する。また多少の位置ずれは、反射板を大きく
することにより十分吸収できるので正確な位置決めは必
要ない。さらに、反射型センサーを使用しているため、
従来のようなフォトインタラプタに基板がついているタ
イプのものよりも安価である。As is apparent from the above description, the heights of the reflection type sensor and the reflection plate can be regulated in the displacement by the actuator section for detecting the operating state, and the optimum height of the reflection type sensor can be controlled. Since a reflector can be placed on, the operation is stable. Further, since a slight displacement can be sufficiently absorbed by enlarging the reflector, accurate positioning is not necessary. Furthermore, because it uses a reflective sensor,
It is cheaper than the conventional type in which the substrate is attached to the photo interrupter.
【図１】図１は、ファクシミリ装置の内部構造を説明す
るための説明断面図である。FIG. 1 is an explanatory sectional view for explaining an internal structure of a facsimile device.
【図２】図２は、用紙検知装置の側面図である。FIG. 2 is a side view of the sheet detection device.
【図３】図３は、用紙検出装置のアクチュエータの構造
を示す上面図である。FIG. 3 is a top view showing a structure of an actuator of the paper detection device.
４ 反射型センサー ５ 制御基板 ６ アクチュエータ ８ 反射板 １０ 用紙 １１ 高さ規制板 4 Reflective Sensor 5 Control Board 6 Actuator 8 Reflector 10 Paper 11 Height Control Plate
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年１１月７日[Submission date] November 7, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項２[Name of item to be corrected] Claim 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００６】尚、規制部材の先端形状は円弧状であるこ
とが好ましい。It should be noted that the shape of the tip of the regulating member is an arc.
And are preferred .
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】かかる装置にあっては搬送過程の用紙１０
を検出する必要がある。例えば搬送された用紙１０の後
端を反射型センサー４により検知し、これを基準に所定
時間後に搬送手段により次の用紙１０を複写基準位置に
セットする。その反射型センサー４は本体装置内に取り
付けられた制御素子を含むメイン制御基板５に直接配置
されている。In such an apparatus, the sheet 10 in the process of being conveyed.
Necessary to detect there Ru. For example, the rear end of the conveyed sheet 10 is detected by the reflection type sensor 4, and the next sheet 10 is set at the copy reference position by the conveying means after a predetermined time with reference to this. The reflective sensor 4 is directly arranged on a main control board 5 including a control element mounted in the main body device.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１２[Correction target item name] 0012
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１２】そしてアクチュエータ６の基端部である反
射板８は反射型センサー４からなる検知手段に係合しお
り、用紙１０の有無に応じて変位するのにともない検知
動作をおこなう。このとき、部品寸法等のばらつきによ
る前記反射板８と反射型センサー４の高さのずれを先端
が円弧状の高さ規制板１１を設けて、前記メイン制御基
板５に接触させることで前記反射型センサー４と反射板
８との高さを規制するようになっている。これにより、
前記メイン制御基板５と反射板８との距離は、前記高さ
規制板１１の円弧状部分の半径に相当し、メイン制御基
板５と高さ規制板１１との接触位置が多少ずれても確実
に検知することができるように構成されている。また、
前記高さ規制板５の先端の円弧状部分からはその接線方
向に直線形状で反射板８まで延びるように構成し、加工
を容易にすると共に高さ規制板１１の補強を行ってい
る。 The reflecting plate 8 which is the base end of the actuator 6 is engaged with the detecting means composed of the reflection type sensor 4 and performs the detecting operation as it is displaced depending on the presence or absence of the paper 10 . At this time, the height difference between the reflection plate 8 and the reflection type sensor 4 due to the variation in the component size or the like is caused by the tip.
Is provided with an arc-shaped height regulating plate 11 and is brought into contact with the main control board 5 , so that the reflection type sensor 4 and the reflection plate
The height with 8 is regulated. This allows
The distance between the main control board 5 and the reflector 8 is the height.
It corresponds to the radius of the arcuate portion of the regulation plate 11, and
Sure even if the contact position between the plate 5 and the height control plate 11 is slightly displaced
It is configured to be able to detect. Also,
From the arcuate portion of the tip of the height regulating plate 5 the tangent direction
It is configured to extend straight to the reflector 8
And the height regulating plate 11 is reinforced.
It
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】図示に示すように用紙１０が前記ローラ１
によって前記原稿シュート面９に沿って移動し、その用
紙１０が前記アクチュエータ６の先端部と接触すると、
前記アクチュエータ６は前記取り付け部材７に支承され
た前記アクチュエータ６の回転軸を中心に揺動する。そ
れにともない、前記アクチュエータ６の終端に設けられ
た反射板８が前記反射型センサー４から離れ、用紙１０
の検知をおこなう。As shown in the figure, the paper 10 is the roller 1
When the sheet 10 moves along the document chute surface 9 and comes into contact with the tip of the actuator 6,
The actuator 6 swings around the rotation axis of the actuator 6 supported by the mounting member 7. Along with this, the reflection plate 8 provided at the end of the actuator 6 is separated from the reflection type sensor 4 , and the paper 10
Is detected.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１７】変形例として、上記実施例においては、規
制板は反射板の下面に設けられているが、前記制御基板
の上面に設けてもよい。また、規制板の形状を半円形状
にしてもよい。 As a modification, in the above embodiment, the regulation plate is provided on the lower surface of the reflection plate, but it may be provided on the upper surface of the control board. In addition, the shape of the regulation plate is semicircular
You may
Claims (2)
ー手段と、 その反射型センサー手段の信号を処理する制御素子を含
む制御基板と、 装置内を移動すべく供給される被測定物との接触に応じ
て変位するアクチュエータ部と、そのアクチュエータ部
に設けられ前記アクチュエータ部の変位に基づいて前記
反射型センサー手段と近接し前記反射型センサー手段を
作動させる反射板とから成る反射型センサー作動機構と
を備えた検知装置において、 前記反射板が前記反射型センサーに近接した時に、前記
反射板と前記反射型センサーとの高さを規制する規制部
材を設けたことを特徴とする検知装置。1. A reflection type sensor means having a light emitting part and a light receiving part, a control board including a control element for processing a signal of the reflection type sensor means, and an object to be measured supplied to move in the apparatus. A reflection-type sensor operating mechanism including an actuator portion that is displaced in response to a contact, and a reflection plate that is provided in the actuator portion and that is close to the reflection-type sensor means and operates the reflection-type sensor means based on the displacement of the actuator portion. A detection device including: a detection device including a restriction member that restricts heights of the reflection plate and the reflection sensor when the reflection plate approaches the reflection sensor.
とを特徴とする請求項１記載の検知装置。2. The detection device according to claim 1, wherein the height regulating plate has a semicircular shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28470893A JP3136873B2 (en) | 1993-11-15 | 1993-11-15 | Detection device |
| US08/329,474 US5604609A (en) | 1993-11-01 | 1994-10-26 | Light reflection type detection device in facsimile machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28470893A JP3136873B2 (en) | 1993-11-15 | 1993-11-15 | Detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07139915A true JPH07139915A (en) | 1995-06-02 |
| JP3136873B2 JP3136873B2 (en) | 2001-02-19 |
Family
ID=17681956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28470893A Expired - Lifetime JP3136873B2 (en) | 1993-11-01 | 1993-11-15 | Detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3136873B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6032950A (en) * | 1997-03-07 | 2000-03-07 | Brother Kogyo Kabushiki Kaisha | Detecting device for detecting a transfer object |
-
1993
- 1993-11-15 JP JP28470893A patent/JP3136873B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6032950A (en) * | 1997-03-07 | 2000-03-07 | Brother Kogyo Kabushiki Kaisha | Detecting device for detecting a transfer object |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3136873B2 (en) | 2001-02-19 |
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