JPH0328143U - - Google Patents
Info
- Publication number
- JPH0328143U JPH0328143U JP8653489U JP8653489U JPH0328143U JP H0328143 U JPH0328143 U JP H0328143U JP 8653489 U JP8653489 U JP 8653489U JP 8653489 U JP8653489 U JP 8653489U JP H0328143 U JPH0328143 U JP H0328143U
- Authority
- JP
- Japan
- Prior art keywords
- medium
- conveyance path
- light receiving
- detectors
- receiving sensors
- 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 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Handling Of Sheets (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は本考案の媒体検知装置の構成を示す図
、第２図は本考案の媒体検知装置の動作を説明す
るための波形図、第３図は従来の媒体検知装置の
構成を示す図である。
ａ１，ａ２……ａｎ……端子、Ｂ，Ｃ，Ｄ……
スイツチング信号、ＣＤ……共通線、ＰＤ１〜Ｐ
Ｄｎ……発光ダイオード、ＰＴ１〜ＰＴｎ……受
光ダイオード、１０……媒体搬送路、１１……単
紙媒体、１２……センサ信号判定回路、１３……
スイツチ。
FIG. 1 is a diagram showing the configuration of the medium detection device of the present invention, FIG. 2 is a waveform diagram for explaining the operation of the medium detection device of the present invention, and FIG. 3 is a diagram showing the configuration of a conventional medium detection device. It is. a 1 , a 2 ... a n ... terminal, B, C, D ...
Switching signal, CD...common line, PD 1 to P
Dn ...Light emitting diode, PT1 to PTn ...Light receiving diode, 10...Media transport path, 11...Single paper medium, 12...Sensor signal determination circuit, 13...
Switch.
Claims (1)
を配設する媒体検知装置において、 (a) 上記媒体検知器は、媒体搬送路をはさんで
互いに対向して配設される発光ダイオードと受光
センサを複数組有しており、 (b) 上記複数の発光ダイオードは、相互に並列
に電源回路に接続され、 (c) 上記複数の受光センサは、その一方の端子
側が複数の線を介して、他方の端側が共通線を介
してセンサ判定回路に接続され、 (d) 該センサ判定回路は、順次上記受光センサ
に信号を送り、各受光センサの導通、非導通によ
つて媒体搬送路上の媒体の位置を認識する手段を
有することを特徴とする媒体検知回路。[Claims for Utility Model Registration] In a medium detection device in which a plurality of medium detectors are disposed on a medium conveyance path for conveying a medium, (a) the medium detectors are arranged opposite to each other across the medium conveyance path; (b) The plurality of light emitting diodes are connected to a power supply circuit in parallel with each other; (c) The plurality of light receiving sensors are connected to one of the light receiving sensors. The terminal side is connected to a sensor judgment circuit via a plurality of wires, and the other end side is connected to a sensor judgment circuit via a common line. A medium detection circuit characterized by having means for recognizing the position of a medium on a medium conveyance path through conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8653489U JPH0328143U (en) | 1989-07-25 | 1989-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8653489U JPH0328143U (en) | 1989-07-25 | 1989-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0328143U true JPH0328143U (en) | 1991-03-20 |
Family
ID=31636098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8653489U Pending JPH0328143U (en) | 1989-07-25 | 1989-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015218057A (en) * | 2014-05-21 | 2015-12-07 | 株式会社リコー | Paper transport monitoring device, image forming device |
-
1989
- 1989-07-25 JP JP8653489U patent/JPH0328143U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015218057A (en) * | 2014-05-21 | 2015-12-07 | 株式会社リコー | Paper transport monitoring device, image forming device |
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