JPS63135319U - - Google Patents

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Publication number
JPS63135319U
JPS63135319U JP2696187U JP2696187U JPS63135319U JP S63135319 U JPS63135319 U JP S63135319U JP 2696187 U JP2696187 U JP 2696187U JP 2696187 U JP2696187 U JP 2696187U JP S63135319 U JPS63135319 U JP S63135319U
Authority
JP
Japan
Prior art keywords
output
beam scanning
comparator
scanning position
delay circuit
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.)
Granted
Application number
JP2696187U
Other languages
Japanese (ja)
Other versions
JPH0434503Y2 (en
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 JP1987026961U priority Critical patent/JPH0434503Y2/ja
Publication of JPS63135319U publication Critical patent/JPS63135319U/ja
Application granted granted Critical
Publication of JPH0434503Y2 publication Critical patent/JPH0434503Y2/ja
Expired legal-status Critical Current

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  • Facsimile Transmission Control (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)

Description

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

第１図は本考案に係るレーザビーム走査位置検
出装置の実施例を示す回路図、第２図は第１図示
実施例での比較器入力波形と出力変化の対応図、
第３及４図はいずれも比較器の入力波形と出力変
化の理論対応関係を示す説明図、第５図は従来装
置を示す回路図、第６図は第５図示実施例での比
較器入力波形と出力変化の対応図である。 １……フオトセンサ、１０……フオトダイオー
ド、１２，１３……分割出力線、１５……遅延回
路、１６……遅延回路出力線、２０……比較器、
Ｔ……比較器出力変化位置。 FIG. 1 is a circuit diagram showing an embodiment of the laser beam scanning position detection device according to the present invention, and FIG. 2 is a correspondence diagram of the comparator input waveform and output change in the first illustrated embodiment.
Figures 3 and 4 are explanatory diagrams showing the theoretical correspondence between the input waveform and output change of the comparator, Figure 5 is a circuit diagram showing a conventional device, and Figure 6 is the comparator input in the embodiment shown in Figure 5. FIG. 3 is a correspondence diagram between waveforms and output changes. 1... Photo sensor, 10... Photo diode, 12, 13... Division output line, 15... Delay circuit, 16... Delay circuit output line, 20... Comparator,
T... Comparator output change position.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] レーザビームの走査経路上の予め定めた走査位
置又はこれに対応する位置に設置されたフオトセ
ンサの出力を遅延回路で遅延すると共に、該遅延
回路の出力と前記フオトセンサ出力の出力レベル
をレベル調整回路で等しくして、該両出力を比較
器で比較し、該比較器の比較結果によつてビーム
走査位置の検出を行なうよう構成したこと、を特
徴とするレーザビームの走査位置検出装置。 A delay circuit delays the output of a photo sensor installed at a predetermined scanning position on the laser beam scanning path or a position corresponding thereto, and a level adjustment circuit adjusts the output levels of the output of the delay circuit and the photo sensor output. 1. A laser beam scanning position detecting device, characterized in that the two outputs are compared by a comparator, and the beam scanning position is detected based on the comparison result of the comparator.
JP1987026961U 1987-02-25 1987-02-25 Expired JPH0434503Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987026961U JPH0434503Y2 (en) 1987-02-25 1987-02-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987026961U JPH0434503Y2 (en) 1987-02-25 1987-02-25

Publications (2)

Publication Number Publication Date
JPS63135319U true JPS63135319U (en) 1988-09-06
JPH0434503Y2 JPH0434503Y2 (en) 1992-08-17

Family

ID=30828549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987026961U Expired JPH0434503Y2 (en) 1987-02-25 1987-02-25

Country Status (1)

Country Link
JP (1) JPH0434503Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63244970A (en) * 1987-03-30 1988-10-12 Ricoh Co Ltd Synchronizing signal generator
JPH0879469A (en) * 1994-08-31 1996-03-22 Nec Niigata Ltd Laser scanning beam detection signal generating circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130878U (en) * 1984-07-27 1986-02-24 サンクス株式会社 Reflective photoelectric switch
JPS6230212A (en) * 1985-07-31 1987-02-09 Copal Electron Co Ltd Origin detector for optical scan

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959388A (en) * 1982-09-24 1984-04-05 富士通株式会社 Robot

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130878U (en) * 1984-07-27 1986-02-24 サンクス株式会社 Reflective photoelectric switch
JPS6230212A (en) * 1985-07-31 1987-02-09 Copal Electron Co Ltd Origin detector for optical scan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63244970A (en) * 1987-03-30 1988-10-12 Ricoh Co Ltd Synchronizing signal generator
JPH0879469A (en) * 1994-08-31 1996-03-22 Nec Niigata Ltd Laser scanning beam detection signal generating circuit

Also Published As

Publication number Publication date
JPH0434503Y2 (en) 1992-08-17

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