JPH0376106U - - Google Patents
Info
- Publication number
- JPH0376106U JPH0376106U JP13759289U JP13759289U JPH0376106U JP H0376106 U JPH0376106 U JP H0376106U JP 13759289 U JP13759289 U JP 13759289U JP 13759289 U JP13759289 U JP 13759289U JP H0376106 U JPH0376106 U JP H0376106U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- light
- light receiving
- paper
- receiving means
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
第１図は本考案の具体的な一実施例である穴検
知器の回路図、第２図及び第３図は第１図の説明
に供する図、第４図は本考案の他の実施例を示す
図、第５図は第４図の説明に供するタイムチヤー
ト、第６図は従来の光学式の穴検知器に用いられ
る回路図である。
１……紙、２，２０……穴、３，３０……穴検
知器、３ａ……発光素子（ＬＥＤ）、３ｂ……受
光素子、α……高速応答型受光素子、Ｕ１，Ｕ３
……コンパレータ、３０Ｔ……定電流回路、ＳＷ
１，ＳＷ２……アナログスイツチ、３０ｓ……積
分回路。
Figure 1 is a circuit diagram of a hole detector which is a specific embodiment of the present invention, Figures 2 and 3 are diagrams for explaining Figure 1, and Figure 4 is another embodiment of the present invention. FIG. 5 is a time chart for explaining FIG. 4, and FIG. 6 is a circuit diagram used in a conventional optical hole detector. 1... Paper, 2, 20... Hole, 3, 30... Hole detector, 3a... Light emitting element (LED), 3b... Light receiving element, α... High speed response type light receiving element, U 1 , U 3
... Comparator, 30T ... Constant current circuit, SW
1 , SW 2 ...Analog switch, 30s...Integrator circuit.
Claims (1)
記紙の他方の側に前記発光手段の光を受光する受
光手段が設けられて、前記紙に設けられた所定の
大きさ以上の穴を該穴が前記発光手段と前記受光
手段との間を通過する時の前記受光手段の電気的
特性によつて検出する構成の穴検知器において、
前記受光手段を、前記穴を通過した一定光量以上
の光の受光時間に比例した物理量として捕えて、
前記穴の大きさに対する検出感度を任意に設定で
きる構成したことを特徴とする穴検知器。 A light emitting means is provided on one side of the paper, a light receiving means for receiving light from the light emitting means is provided on the other side of the paper, and a hole of a predetermined size or more is provided on the paper. A hole detector configured to detect the hole based on the electrical characteristics of the light receiving means when the hole passes between the light emitting means and the light receiving means,
The light receiving means is captured as a physical quantity proportional to the light receiving time of a certain amount of light or more that has passed through the hole,
A hole detector characterized in that the detection sensitivity for the size of the hole can be set arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13759289U JPH084563Y2 (en) | 1989-11-28 | 1989-11-28 | Hole detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13759289U JPH084563Y2 (en) | 1989-11-28 | 1989-11-28 | Hole detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0376106U true JPH0376106U (en) | 1991-07-30 |
| JPH084563Y2 JPH084563Y2 (en) | 1996-02-07 |
Family
ID=31684743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13759289U Expired - Lifetime JPH084563Y2 (en) | 1989-11-28 | 1989-11-28 | Hole detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084563Y2 (en) |
-
1989
- 1989-11-28 JP JP13759289U patent/JPH084563Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH084563Y2 (en) | 1996-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |