JPS5892238U - Optical paper detection circuit - Google Patents

Optical paper detection circuit

Info

Publication number
JPS5892238U
JPS5892238U JP18642181U JP18642181U JPS5892238U JP S5892238 U JPS5892238 U JP S5892238U JP 18642181 U JP18642181 U JP 18642181U JP 18642181 U JP18642181 U JP 18642181U JP S5892238 U JPS5892238 U JP S5892238U
Authority
JP
Japan
Prior art keywords
detection circuit
paper detection
optical paper
phototransistor
light emitting
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
Application number
JP18642181U
Other languages
Japanese (ja)
Inventor
武志 中村
Original Assignee
セイコーエプソン株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by セイコーエプソン株式会社 filed Critical セイコーエプソン株式会社
Priority to JP18642181U priority Critical patent/JPS5892238U/en
Publication of JPS5892238U publication Critical patent/JPS5892238U/en
Pending legal-status Critical Current

Links

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案による光学式紙検出回路の一実施例を
示す。第２図は、本考案による光学式紙検出回路の他の
実施例を示す。 ＋Ｖ・・・・・・電源（＋）、ＧＮＤ・・・・・・電源
（−）、２・・開発光ダイオード、３・・・・・・ホト
トランジスタ、４・・・・・・可変抵抗器、５・・・・
・・ツェナーダイオード、９・・・・・・　′コンパレ
ータ、０ＵＴＰＵＴ・・・・・・出力端子。FIG. 1 shows an embodiment of an optical paper detection circuit according to the present invention. FIG. 2 shows another embodiment of the optical paper detection circuit according to the present invention. +V...Power supply (+), GND...Power supply (-), 2...Developed photodiode, 3...Phototransistor, 4...Variable resistor Vessel, 5...
... Zener diode, 9... 'Comparator, 0UTPUT... Output terminal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 発光ダイオードとホトトランジスタを使用したプリンタ
等の紙の検出回路に於いて、前記発光ダイオードの負荷
抵抗に可変抵抗器を使用し、前記ホトトランジスタの負
荷抵抗に抵抗器とサーミスタを使用し、前記ホトトラン
ジスタの一端がツェナーダイオードに接続されたことを
特徴とする光学式紙検出回路。In a paper detection circuit such as a printer using a light emitting diode and a phototransistor, a variable resistor is used as the load resistance of the light emitting diode, a resistor and a thermistor are used as the load resistance of the phototransistor, and the phototransistor is An optical paper detection circuit characterized in that one end of a transistor is connected to a Zener diode.
JP18642181U 1981-12-15 1981-12-15 Optical paper detection circuit Pending JPS5892238U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18642181U JPS5892238U (en) 1981-12-15 1981-12-15 Optical paper detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18642181U JPS5892238U (en) 1981-12-15 1981-12-15 Optical paper detection circuit

Publications (1)

Publication Number Publication Date
JPS5892238U true JPS5892238U (en) 1983-06-22

Family

ID=29988347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18642181U Pending JPS5892238U (en) 1981-12-15 1981-12-15 Optical paper detection circuit

Country Status (1)

Country Link
JP (1) JPS5892238U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384186A (en) * 1976-12-29 1978-07-25 Omron Tateisi Electronics Co Group switch with relay function
JPS5559371A (en) * 1978-10-30 1980-05-02 Omron Tateisi Electronics Co Transmissive photoelectric switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384186A (en) * 1976-12-29 1978-07-25 Omron Tateisi Electronics Co Group switch with relay function
JPS5559371A (en) * 1978-10-30 1980-05-02 Omron Tateisi Electronics Co Transmissive photoelectric switch

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