JPS62111674U - - Google Patents
Info
- Publication number
- JPS62111674U JPS62111674U JP75786U JP75786U JPS62111674U JP S62111674 U JPS62111674 U JP S62111674U JP 75786 U JP75786 U JP 75786U JP 75786 U JP75786 U JP 75786U JP S62111674 U JPS62111674 U JP S62111674U
- Authority
- JP
- Japan
- Prior art keywords
- light
- paper
- pulse
- emitting element
- frequency
- 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
- 239000013256 coordination polymer Substances 0.000 description 2
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は本考案実施例における構成を示す図、
第２図は発光素子１のＯＮ／ＯＦＦ信号と受光素
子２の検出出力の関係を示す図、第３図は商用電
源電圧と外光強度及び受光素子２の検出出力の関
係を示す図、第４図ａ，ｂは本考案におけるＣＰ
Ｕ３の内部処理動作を示すフローチヤート、第５
図は従来の用紙検出装置を示す図である。
１……発光素子、２……受光素子、３……ＣＰ
Ｕ。
FIG. 1 is a diagram showing the configuration of an embodiment of the present invention;
2 is a diagram showing the relationship between the ON/OFF signal of the light emitting element 1 and the detection output of the light receiving element 2, FIG. 3 is a diagram showing the relationship between the commercial power supply voltage, external light intensity, and the detection output of the light receiving element 2. Figure 4 a and b are the CP in this invention.
Flowchart showing internal processing operation of U3, No. 5
The figure shows a conventional paper detection device. 1... Light emitting element, 2... Light receiving element, 3... CP
U.
Claims (1)
れた発光素子と、用紙により反射された前記発光
素子からの光を検出するように配置された受光素
子と、この受光素子の検出出力に従つて用紙の存
否を判別する手段とから成る用紙検出装置におい
て、 前記発光素子を断続して発光させるためのパル
スを発生する手段を有し、このパルスの周波数は
商用電源周波数の４倍以上であり、前記判別手段
は前記検出出力が前記パルスの断続変化に応じて
変化しているか否かによつて用紙の存否を判別す
ることを特徴とする用紙検出装置。[Claims for Utility Model Registration] A light-emitting element provided near a paper path to illuminate the paper, a light-receiving element arranged to detect light from the light-emitting element reflected by the paper, and A paper detecting device comprising means for determining the presence or absence of paper according to the detection output of a light receiving element, further comprising means for generating a pulse for causing the light emitting element to emit light intermittently, the frequency of this pulse being set at a frequency equal to or lower than the commercial power supply. 4 times or more of the frequency, and the determining means determines the presence or absence of paper depending on whether or not the detection output changes in accordance with intermittent changes in the pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP75786U JPS62111674U (en) | 1986-01-07 | 1986-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP75786U JPS62111674U (en) | 1986-01-07 | 1986-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62111674U true JPS62111674U (en) | 1987-07-16 |
Family
ID=30778026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP75786U Pending JPS62111674U (en) | 1986-01-07 | 1986-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62111674U (en) |
-
1986
- 1986-01-07 JP JP75786U patent/JPS62111674U/ja active Pending
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