JPS61149144U - - Google Patents

Info

Publication number
JPS61149144U
JPS61149144U JP3112985U JP3112985U JPS61149144U JP S61149144 U JPS61149144 U JP S61149144U JP 3112985 U JP3112985 U JP 3112985U JP 3112985 U JP3112985 U JP 3112985U JP S61149144 U JPS61149144 U JP S61149144U
Authority
JP
Japan
Prior art keywords
infrared light
tension
tape
light receiving
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
JP3112985U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP3112985U priority Critical patent/JPS61149144U/ja
Publication of JPS61149144U publication Critical patent/JPS61149144U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Description

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

第１図は本考案の実施例に係わる磁気記録再生
機の平面図、第２図は第１図のテンシヨンアーム
及びこの近傍を示す平面図、第３図はテンシヨン
制御回路を示す回路、第４図はテンシヨンアーム
の回動角度の変化とフオトトランジスタの出力段
の電圧との関係を示す特性図、第５図は電源投入
時における第３図の第１の差動増幅器の出力電圧
の変化を示す波形図である。 １３，１４……テンシヨンアーム、２２，２３
……赤外線発光ダイオード、２４，２５……フオ
トトランジスタ、２６，２７……赤外線フイルタ
、２９……電源ライン、３２……差動増幅器、３
５……抵抗、３６……コンデンサ。 FIG. 1 is a plan view of a magnetic recording/reproducing machine according to an embodiment of the present invention, FIG. 2 is a plan view showing the tension arm of FIG. 1 and its vicinity, and FIG. 3 is a circuit showing a tension control circuit, Figure 4 is a characteristic diagram showing the relationship between changes in the rotation angle of the tension arm and the voltage at the output stage of the phototransistor, and Figure 5 shows the output voltage of the first differential amplifier in Figure 3 when the power is turned on. FIG. 3 is a waveform chart showing changes. 13, 14...Tension arm, 22, 23
... Infrared light emitting diode, 24, 25 ... Photo transistor, 26, 27 ... Infrared filter, 29 ... Power supply line, 32 ... Differential amplifier, 3
5...Resistor, 36...Capacitor.

Claims (1)

【実用新案登録請求の範囲】 (1) 一対のリール間を走行するテープにテンシ
ヨンを与えるための回動自在なテンシヨンアーム
を備えているテープ走行装置のテープテンシヨン
検出装置において、 前記テンシヨンアームの回動方向において対向
するように赤外線発光素子と赤外線受光素子とを
配置し、前記赤外線発光素子と前記赤外線受光素
子との内の一方を前記テンシヨンアームに固着し
、前記赤外線発光素子と前記赤外線受光素子との
内の他方を固定配置し、前記赤外線受光素子に入
射する赤外線の量によつて前記テープのテンシヨ
ンを検出するように構成したことを特徴とするテ
ープ走行装置のテープテンシヨン検出装置。 (2) 前記赤外線発光素子は赤外線発光ダイオー
ドであり、前記赤外線受光素子はフオトトランジ
スタとこのフオトトランジスタの光入射面を覆う
赤外線フイルタとの組み合せ体である実用新案登
録請求の範囲第１項記載のテープ走行装置のテー
プテンシヨン検出装置。[Claims for Utility Model Registration] (1) A tape tension detection device for a tape running device, which is equipped with a rotatable tension arm for applying tension to a tape running between a pair of reels, An infrared light emitting element and an infrared light receiving element are arranged so as to face each other in the rotating direction of the arm, one of the infrared light emitting element and the infrared light receiving element is fixed to the tension arm, and the infrared light emitting element and the infrared light receiving element are fixed to the tension arm. A tape tension of a tape running device, characterized in that the other of the infrared light receiving elements is fixedly arranged, and the tension of the tape is detected based on the amount of infrared rays incident on the infrared light receiving element. Detection device. (2) The utility model according to claim 1, wherein the infrared light emitting element is an infrared light emitting diode, and the infrared light receiving element is a combination of a phototransistor and an infrared filter that covers a light incident surface of the phototransistor. Tape tension detection device for tape running device.
JP3112985U 1985-03-05 1985-03-05 Pending JPS61149144U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3112985U JPS61149144U (en) 1985-03-05 1985-03-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3112985U JPS61149144U (en) 1985-03-05 1985-03-05

Publications (1)

Publication Number Publication Date
JPS61149144U true JPS61149144U (en) 1986-09-13

Family

ID=30531453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3112985U Pending JPS61149144U (en) 1985-03-05 1985-03-05

Country Status (1)

Country Link
JP (1) JPS61149144U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63306154A (en) * 1987-06-04 1988-12-14 Ushio Inc Roll film feeder
JPS6469445A (en) * 1987-09-09 1989-03-15 Ushio Electric Inc Roll film feeder
JP2015536262A (en) * 2012-11-19 2015-12-21 ディリーＤｉｌｌｉ Supply / collection device for output for digital printing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843612B1 (en) * 1970-06-02 1973-12-19
JPS49114906A (en) * 1973-02-12 1974-11-01
JPS57183651A (en) * 1981-05-07 1982-11-12 Canon Inc Tension controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843612B1 (en) * 1970-06-02 1973-12-19
JPS49114906A (en) * 1973-02-12 1974-11-01
JPS57183651A (en) * 1981-05-07 1982-11-12 Canon Inc Tension controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63306154A (en) * 1987-06-04 1988-12-14 Ushio Inc Roll film feeder
JPS6469445A (en) * 1987-09-09 1989-03-15 Ushio Electric Inc Roll film feeder
JP2015536262A (en) * 2012-11-19 2015-12-21 ディリーＤｉｌｌｉ Supply / collection device for output for digital printing

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