JPH0545195B2 - - Google Patents
Info
- Publication number
- JPH0545195B2 JPH0545195B2 JP61239188A JP23918886A JPH0545195B2 JP H0545195 B2 JPH0545195 B2 JP H0545195B2 JP 61239188 A JP61239188 A JP 61239188A JP 23918886 A JP23918886 A JP 23918886A JP H0545195 B2 JPH0545195 B2 JP H0545195B2
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- light
- paper holder
- emitting element
- recording
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims description 26
- 238000005259 measurement Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Handling Of Continuous Sheets Of Paper (AREA)
- Recording Measured Values (AREA)
- Geophysics And Detection Of Objects (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は記録紙及び記録紙ホルダの検出器に関
し、とくに間欠的に発光する発光素子と１個の光
センサとの組合せにより記録紙及び記録紙ホルダ
の両者を確実に検出する装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a detector for recording paper and a recording paper holder, and more particularly, the present invention relates to a detector for recording paper and a recording paper holder. The present invention relates to a device that reliably detects both.
従来の技術
第２図及び第３図を参照するに、各種記録計に
おいて記録紙１の着脱を容易にするため、記録紙
ホルダ２を記録動作位置Ｐ１と記録紙着脱位置Ｐ
２との間に可動とする構造、即ち両位置Ｐ１，Ｐ
２の間に揺動するアーム３に記録紙ホルダ２を取
付ける構造が普及している。2. Description of the Related Art Referring to FIGS. 2 and 3, in order to facilitate the attachment and detachment of the recording paper 1 in various recorders, the recording paper holder 2 is moved between the recording operation position P1 and the recording paper attachment/detachment position P.
2, that is, both positions P1, P
A structure in which the recording paper holder 2 is attached to an arm 3 that swings between 2 and 3 is popular.
この構造の記録計においては、記録紙ホルダ２
が記録動作位置Ｐ１にあること及び記録紙１がこ
の記録動作位置Ｐ１にある記録紙ホルダ２に取付
けられていることを確認する必要がある。１個の
光ユニツト４によりこれらの検出をしようとする
と、記録紙１からの反射光Ｒが強い場合において
記録紙ホルダ２が記録紙着脱位置Ｐ２にあつて強
い外乱光Ｎが光ユニツト４へ入射するときには、
反射光Ｒと外乱光Ｎとの識別が困難になる問題が
ある。この問題は、現実には記録紙ホルダ２が記
録紙着脱位置Ｐ２にあるにも拘らず記録紙１が記
録動作位置Ｐ１の記録紙ホルダ２上にあるとの誤
認の原因となる。 In a recorder with this structure, the recording paper holder 2
It is necessary to confirm that the recording paper holder 2 is located at the recording operation position P1 and that the recording paper 1 is attached to the recording paper holder 2 located at the recording operation position P1. If an attempt is made to detect these using one optical unit 4, when the reflected light R from the recording paper 1 is strong, the recording paper holder 2 is at the recording paper loading/unloading position P2, and strong disturbance light N enters the optical unit 4. When you do,
There is a problem that it becomes difficult to distinguish between the reflected light R and the disturbance light N. This problem causes a misunderstanding that the recording paper 1 is on the recording paper holder 2 at the recording operation position P1, even though the recording paper holder 2 is actually at the recording paper attachment/detachment position P2.
発明が解決しようとする問題点
従つて、本発明が解決しようとする問題点は、
１個の光センサによて記録紙及び記録紙ホルダの
両者を確実に検出する検出器の提供にある。Problems to be solved by the invention Therefore, the problems to be solved by the invention are as follows:
An object of the present invention is to provide a detector that can reliably detect both recording paper and a recording paper holder using one optical sensor.
問題点を解決するための手段
第１図及び第４図を参照するに、本発明による
検出器１０は、記録動作位置Ｐ１における記録紙
ホルダ２の記録紙保持部に対向する部位に設けら
れた発光素子５、上記発光素子５に隣接配置され
た光センサ６、上記光センサ６の出力と所定の最
小設定値及び中間設定値とを記憶する記憶装置
７、並びに上記発光素子５の発光の制御及び上記
発光の有無に対応する前記光センサ６の出力差を
上記最小設定値及び中間設定値と比較する制御装
置８を備える。Means for Solving the Problems Referring to FIGS. 1 and 4, the detector 10 according to the present invention is provided at a portion of the recording paper holder 2 facing the recording paper holder at the recording operation position P1. A light emitting element 5, a light sensor 6 disposed adjacent to the light emitting element 5, a storage device 7 for storing the output of the light sensor 6 and predetermined minimum set values and intermediate set values, and control of light emission of the light emitting element 5. and a control device 8 that compares the output difference of the optical sensor 6 corresponding to the presence or absence of the light emission with the minimum setting value and the intermediate setting value.
作 用
第１図ないし第５図を参照して本発明による検
出器１０の作用を説明する。先ず制御装置８の制
御により発光素子５を発光させ、発光素子５から
の発光Ｉが存在する状態で光センサ６に達する反
射受光Ｒ１を光センサ６で検出し、検出された反
射受光Ｒ１のレベルを記憶装置７に記憶する。反
射受光Ｒ１の検出及び記憶の直後に、制御装置８
の制御により発光素子５の発光を停止させ、発光
素子５からの発光Ｉが存在しない状態で光センサ
６に達する反射受光Ｒ２を光センサ６で検出し、
検出された反射光Ｒ２のレベルを記憶装置７に記
憶する。Operation The operation of the detector 10 according to the present invention will be explained with reference to FIGS. 1 to 5. First, the light emitting element 5 is caused to emit light under the control of the control device 8, and the reflected light R1 reaching the optical sensor 6 is detected by the optical sensor 6 in the presence of the light emission I from the light emitting element 5, and the level of the detected reflected light R1 is detected. is stored in the storage device 7. Immediately after detecting and storing the reflected received light R1, the control device 8
The light emission of the light emitting element 5 is stopped by the control of the light emitting element 5, and the reflected light R2 that reaches the optical sensor 6 in the absence of the light emission I from the light emitting element 5 is detected by the optical sensor 6,
The level of the detected reflected light R2 is stored in the storage device 7.
その後、両反射受光Ｒ１，Ｒ２間の差Ｄを減算
により求める。反射受光Ｒ１の測定と反射受光Ｒ
２の測定の間には時間差が殆どないので、両測定
における測定環境の光雑音レベルは等しい。従つ
て、上記差Ｄは、測定環境の光雑音レベルの影響
を除去した状態において、発光素子５からの発光
Ｉのうち実質上記録紙１及び／又は記録紙ホルダ
２で反射された反射光のレベルを表わす。実質上
としたのは、記録紙１及び／又は記録紙ホルダ２
以外からの反射も僅か存在し得るからである。 Thereafter, the difference D between both reflected and received lights R1 and R2 is determined by subtraction. Measurement of reflected light received R1 and reflected light received R
Since there is almost no time difference between the two measurements, the optical noise level of the measurement environment in both measurements is the same. Therefore, the above-mentioned difference D is substantially equal to the reflected light reflected by the recording paper 1 and/or the recording paper holder 2 out of the light emission I from the light emitting element 5 when the influence of the optical noise level of the measurement environment is removed. Represents level. What is actually used is recording paper 1 and/or recording paper holder 2.
This is because there may be a small amount of reflection from other sources.
記録紙ホルダ２が第３図に示される様に記録紙
着脱位置Ｐ２にあるときは、記録紙１及び／又は
記録紙ホルダ２から反射される反射光がないの
で、上記差Ｄは外乱光Ｎの有無に拘らず非常に低
い値となる。従つて、この差Ｄが所定の最小設定
値Min以下であるときは、記録紙ホルダ２が記録
紙着脱位置Ｐ２にあつて未装着であると判断され
る。 When the recording paper holder 2 is at the recording paper loading/unloading position P2 as shown in FIG. The value is very low regardless of the presence or absence of Therefore, when this difference D is less than or equal to the predetermined minimum setting value Min, it is determined that the recording paper holder 2 is at the recording paper attachment/detachment position P2 and is not attached.
記録紙ホルダ２が第１図及び第２図に示される
記録動作位置Ｐ１にある場合には、発光素子５か
らの発光Ｉに応じ記録紙１及び／又は記録紙ホル
ダ２からの反射光が生ずるので、上記差Ｄは記録
紙ホルダ２からの反射光のみを示す中間レベル又
は記録紙１からの反射光を示す高いレベルをと
る。従つて、上記差Ｄが所定の比較的大きな中間
設定値Ｈ以上であるときは、記録紙ホルダ２が記
録動作位置Ｐ１にあつて装着済みでありしかも記
録紙１がその記録動作位置Ｐ１における記録紙ホ
ルダ２上にあると判断される。他方、この差Ｄが
上記最小設定値Min以上ではあるが上記中間設定
値Ｈ以下の中間レベルであるときは、記録紙ホル
ダ２が記録動作位置Ｐ１にあつて装着済みである
ものの記録紙１は記録動作位置Ｐ１にないと判断
される。 When the recording paper holder 2 is at the recording operation position P1 shown in FIGS. 1 and 2, reflected light from the recording paper 1 and/or the recording paper holder 2 is generated in response to the light emission I from the light emitting element 5. Therefore, the difference D takes an intermediate level indicating only the light reflected from the recording paper holder 2 or a high level indicating the reflected light from the recording paper 1. Therefore, when the difference D is greater than or equal to a predetermined relatively large intermediate setting value H, it means that the recording paper holder 2 is at the recording operation position P1 and has been installed, and the recording paper 1 is not recording at the recording operation position P1. It is determined that the paper is on the paper holder 2. On the other hand, if this difference D is at an intermediate level that is greater than or equal to the minimum setting value Min but less than or equal to the intermediate setting value H, then the recording paper holder 2 is at the recording operation position P1 and the recording paper 1 is installed even though it is already installed. It is determined that it is not at the recording operation position P1.
こうして本発明によれば、１個の光センサ６に
よつて記録紙１及び記録紙ホルダ２の両者の検出
をすることができる。 Thus, according to the present invention, both the recording paper 1 and the recording paper holder 2 can be detected by one optical sensor 6.
実施例
第１図及び第４図に示される実施例は、記録計
の限られた空間内に配置するため、検出器１０を
光学ユニツト４と演算ユニツト９とに分け、光学
ユニツト４のみを記録紙ホルダ２の記録動作位置
Ｐ１の近傍においている。しかし、検出器１０の
構成要素の全てを１個のケース内におさめ、それ
を記録紙送りの軌跡に近い適当な位置に設置して
もよい。Embodiment In the embodiment shown in FIGS. 1 and 4, the detector 10 is divided into an optical unit 4 and an arithmetic unit 9, and only the optical unit 4 is used for recording. It is located near the recording operation position P1 of the paper holder 2. However, all of the components of the detector 10 may be housed in one case and placed at an appropriate position close to the recording paper feeding locus.
第６図及び第７図は、本出願人がさきに実願昭
60−120006号に開示した記録紙側辺検出機構に本
発明の記録紙及び記録紙ホルダ検出器を組込んだ
実施例を示す。記録紙ホルダ２の軸線と平行に移
動する記録ヘツド１１に記録紙１の側辺検出用遮
蔽板１２を取付け、本発明の光学ユニツト４と記
録紙１との間の光路をよぎつてこの遮蔽板１２が
移動できる様に構成する。この場合、遮蔽板１２
の反射率を既知とすれば、光学ユニツト４の発光
素子５からの発発光Ｉが遮蔽板１２へ投射したと
きに遮蔽板１２からの反射光Ｒのレベルを計算に
より求めることができる。 Figure 6 and Figure 7 are
60-120006, an embodiment is shown in which the recording paper and recording paper holder detector of the present invention is incorporated into the recording paper side detection mechanism disclosed in No. 60-120006. A shielding plate 12 for detecting the side of the recording paper 1 is attached to the recording head 11 that moves parallel to the axis of the recording paper holder 2, and this shielding plate crosses the optical path between the optical unit 4 of the present invention and the recording paper 1. 12 can be moved. In this case, the shielding plate 12
If the reflectance is known, the level of the reflected light R from the shielding plate 12 when the emitted light I from the light emitting element 5 of the optical unit 4 is projected onto the shielding plate 12 can be determined by calculation.
従つて、こうして求めた反射光Ｒの計算値とそ
れに対応する光センサ６の実測値とを比較するな
らば、光センサ６の特性を遮蔽板１２によつて校
正することができる。また、その校正結果に基づ
いて第５図の小さな値Min及び大きな値Ｈを修正
することが可能になり、長期使用後も正確な動作
を確保することができる。 Therefore, by comparing the calculated value of the reflected light R obtained in this manner with the corresponding measured value of the optical sensor 6, the characteristics of the optical sensor 6 can be calibrated using the shielding plate 12. Moreover, it becomes possible to correct the small value Min and the large value H in FIG. 5 based on the calibration result, and accurate operation can be ensured even after long-term use.
第８図は、記録紙ホルダ２が一定位置にあり光
学ユニツト４が記録紙１の装填の便のため、枢支
軸１３の回りに回動自在の検出ユニツト１４に取
付けられた実施例を示す。 FIG. 8 shows an embodiment in which the recording paper holder 2 is in a fixed position and the optical unit 4 is attached to a detection unit 14 that is rotatable around a pivot shaft 13 for convenience in loading the recording paper 1. .
発明の効果
以上詳細に説明した様に、本発明の記録紙及び
記録紙ホルダの検出器によれば発光素子の間欠的
発光とそれに同期した反射光の検出により光雑音
Ｎの影響を除去するので、次の顕著な効果を奏す
る。Effects of the Invention As explained in detail above, the recording paper and recording paper holder detector of the present invention eliminates the influence of optical noise N by detecting the intermittent light emission of the light emitting element and the reflected light synchronized with it. , has the following remarkable effects.
(イ) １個の光センサにより記録紙と記録紙ホルダ
の両者を検出することができる。(a) One optical sensor can detect both the recording paper and the recording paper holder.
(ロ) 光センサを常時発光させないので、光センサ
の長寿命を確保することができる。(b) Since the optical sensor does not emit light all the time, a long lifespan of the optical sensor can be ensured.
(ハ) 非接触手法により記録紙及び記録紙ホルダの
検出をすることができる。(c) The recording paper and recording paper holder can be detected using a non-contact method.
(ニ) 外乱光の影響を避けられるので、取付位置選
択の自由度が大きい。(d) Since the influence of ambient light can be avoided, there is a high degree of freedom in selecting the mounting position.
第１図は本発明の一実施例の要部斜視図、第２
図及び第３図は動作説明図、第４図は本発明の構
成を示すブロツク図、第５図は本発明の動作を示
す流れ図、第６図及び第７図は他の実施例の説明
図、第８図はさらに他の実施例の説明図である。
１…記録紙、２…記録紙ホルダ、３…アーム、
４…光学ユニツト、５…発光素子、６…光セン
サ、７…記憶装置、８…制御装置、１０…検出
器、１１…記録ヘツド、１２…遮蔽板、１３…枢
支軸、１４…検出ユニツト。
Fig. 1 is a perspective view of essential parts of an embodiment of the present invention;
FIG. 4 is a block diagram showing the configuration of the present invention, FIG. 5 is a flow chart showing the operation of the present invention, and FIGS. 6 and 7 are explanatory diagrams of other embodiments. , FIG. 8 is an explanatory diagram of still another embodiment. 1...recording paper, 2...recording paper holder, 3...arm,
4... Optical unit, 5... Light emitting element, 6... Optical sensor, 7... Storage device, 8... Control device, 10... Detector, 11... Recording head, 12... Shield plate, 13... Pivot shaft, 14... Detection unit .
Claims (1)
保持部に対向する部位に設けられた発光素子、上
記発光素子に隣接配置された光センサ、光センサ
の出力と所定の最小設定値及び中間設定値とを記
憶する記憶装置、並びに上記発光素子の発光の制
御及び上記発光の有無に対応する前記光センサの
出力差を上記最小設定値及び中間設定値と比較す
る制御装置を備えてなる記録紙及び記録紙ホルダ
の検出器。1. A light emitting element provided in a portion of the recording paper holder facing the recording paper holding section in the recording operation position, a light sensor disposed adjacent to the light emitting element, and an output of the light sensor and a predetermined minimum setting value and intermediate setting value. and a control device that controls the light emission of the light emitting element and compares the output difference of the optical sensor corresponding to the presence or absence of the light emission with the minimum setting value and the intermediate setting value. Paper holder detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239188A JPS6395380A (en) | 1986-10-09 | 1986-10-09 | Detector for recording paper and recording paper holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239188A JPS6395380A (en) | 1986-10-09 | 1986-10-09 | Detector for recording paper and recording paper holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6395380A JPS6395380A (en) | 1988-04-26 |
| JPH0545195B2 true JPH0545195B2 (en) | 1993-07-08 |
Family
ID=17041024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61239188A Granted JPS6395380A (en) | 1986-10-09 | 1986-10-09 | Detector for recording paper and recording paper holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6395380A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS598947B2 (en) * | 1977-07-05 | 1984-02-28 | 株式会社村田製作所 | Secondary electron multiplier |
| JPS59204785A (en) * | 1983-05-09 | 1984-11-20 | Kawasaki Heavy Ind Ltd | Optical detection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6246191Y2 (en) * | 1979-04-28 | 1987-12-11 | ||
| JPS598947U (en) * | 1982-07-09 | 1984-01-20 | セイコーエプソン株式会社 | Roll paper near end detection device |
-
1986
- 1986-10-09 JP JP61239188A patent/JPS6395380A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS598947B2 (en) * | 1977-07-05 | 1984-02-28 | 株式会社村田製作所 | Secondary electron multiplier |
| JPS59204785A (en) * | 1983-05-09 | 1984-11-20 | Kawasaki Heavy Ind Ltd | Optical detection |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6395380A (en) | 1988-04-26 |
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