JPH0467646U - - Google Patents
Info
- Publication number
- JPH0467646U JPH0467646U JP11125890U JP11125890U JPH0467646U JP H0467646 U JPH0467646 U JP H0467646U JP 11125890 U JP11125890 U JP 11125890U JP 11125890 U JP11125890 U JP 11125890U JP H0467646 U JPH0467646 U JP H0467646U
- Authority
- JP
- Japan
- Prior art keywords
- document
- document size
- detection device
- size detection
- reflective
- 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 4
- 239000011521 glass Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Holders For Sensitive Materials And Originals (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は本考案に係る原稿検知装置の構成例を
示すブロツク図、第２図はＬＥＤドライバと遅延
回路の構成例を示す回路図、第３図は反射形フオ
トセンサの構成を示す概略図、第４図は反射形フ
オトセンサを用いた原稿検知の原理を示す概略図
である。
１……反射形フオトセンサ、１ａ……赤外線Ｌ
ＥＤ、１ｂ……フオトトランジスタ、１ｃ，１ｄ
……レンズ、１ｅ……可視光カツトフイルタ、１
ｆ……Ｉ／Ｖ変換部、２……プラテンガラス、３
……原稿、１１……ＬＥＤドライバ、１２……ハ
イパスフイルタ、１３……増幅器、１４……基準
電圧設定器、１５，１７……比較器、１６……積
分器、１８……遅延回路。
FIG. 1 is a block diagram showing an example of the configuration of a document detection device according to the present invention, FIG. 2 is a circuit diagram showing an example of the configuration of an LED driver and a delay circuit, and FIG. 3 is a schematic diagram showing the configuration of a reflective photo sensor. FIG. 4 is a schematic diagram showing the principle of document detection using a reflective photo sensor. 1... Reflective photo sensor, 1a... Infrared L
ED, 1b...Phototransistor, 1c, 1d
...Lens, 1e...Visible light cut filter, 1
f...I/V conversion unit, 2...Platen glass, 3
... Manuscript, 11 ... LED driver, 12 ... High pass filter, 13 ... Amplifier, 14 ... Reference voltage setter, 15, 17 ... Comparator, 16 ... Integrator, 18 ... Delay circuit.
Claims (1)
を備えて原稿サイズを検知する原稿サイズ検知装
置において、プラテンカバーの閉信号発生時に、
前記反射形原稿センサの発光素子を消灯する手段
を備えたことを特徴とする原稿サイズ検知装置。 In a document size detection device that is equipped with multiple reflective document sensors on the bottom surface of the platen glass to detect the document size, when a platen cover close signal is generated,
A document size detection device comprising means for turning off a light emitting element of the reflective document sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11125890U JPH0467646U (en) | 1990-10-23 | 1990-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11125890U JPH0467646U (en) | 1990-10-23 | 1990-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0467646U true JPH0467646U (en) | 1992-06-16 |
Family
ID=31858684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11125890U Pending JPH0467646U (en) | 1990-10-23 | 1990-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0467646U (en) |
-
1990
- 1990-10-23 JP JP11125890U patent/JPH0467646U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0467646U (en) | ||
| JPS62201026U (en) | ||
| JPH0277963U (en) | ||
| JPS6438636U (en) | ||
| JPH0463401U (en) | ||
| JPH0375553U (en) | ||
| JPH0197350U (en) | ||
| JPH03130661U (en) | ||
| JPS61102807U (en) | ||
| JPH0461963U (en) | ||
| JPS639163U (en) | ||
| JPS63165504U (en) | ||
| JPH0472238U (en) | ||
| JPH0241561U (en) | ||
| JPS62178304U (en) | ||
| JPH0236260U (en) | ||
| JPS61199967U (en) | ||
| JPS60188358U (en) | Air filter function deterioration warning device | |
| JPS62169346U (en) | ||
| JPS63142551U (en) | ||
| JPH0450973U (en) | ||
| JPH0466598U (en) | ||
| JPS6341148U (en) | ||
| JPS62195160U (en) | ||
| JPH0221965U (en) |