JPS57606A - Method for generating synchronizing signal - Google Patents

Method for generating synchronizing signal

Info

Publication number
JPS57606A
JPS57606A JP7405180A JP7405180A JPS57606A JP S57606 A JPS57606 A JP S57606A JP 7405180 A JP7405180 A JP 7405180A JP 7405180 A JP7405180 A JP 7405180A JP S57606 A JPS57606 A JP S57606A
Authority
JP
Japan
Prior art keywords
synchronizing signal
errors
generation
image quality
high image
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
JP7405180A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Funato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7405180A priority Critical patent/JPS57606A/en
Publication of JPS57606A publication Critical patent/JPS57606A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/12—Scanning systems using multifaceted mirrors
    • G02B26/125—Details of the optical system between the polygonal mirror and the image plane
    • G02B26/126—Details of the optical system between the polygonal mirror and the image plane including curved mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To reduce the errors in generation of synchronizing signals, and make recording to high image quality possible by providing a convex mirror or a cylindrical mirror having a curved face in a scanning direction at the intermediate between an optical deflector and a medium to be scanned, and taking out a beam for the synchronizing signal. CONSTITUTION:Part of the scanning beam which is reflected by an optical deflector and has passed through an ftheta lens is taken out by a convex mirror or a cylindrical mirror 9 and enters a photodetector 7. The output thereof is converted to the synchronizing signal consisting of the synchronising pulses generated at the rise of the photodetection signal by way of an amplifier and a comparator. Thereby, the errors in the generation of the synchronizing signal are reduced and the recording of high image quality is accomplished.
JP7405180A 1980-06-02 1980-06-02 Method for generating synchronizing signal Pending JPS57606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7405180A JPS57606A (en) 1980-06-02 1980-06-02 Method for generating synchronizing signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7405180A JPS57606A (en) 1980-06-02 1980-06-02 Method for generating synchronizing signal

Publications (1)

Publication Number Publication Date
JPS57606A true JPS57606A (en) 1982-01-05

Family

ID=13535993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7405180A Pending JPS57606A (en) 1980-06-02 1980-06-02 Method for generating synchronizing signal

Country Status (1)

Country Link
JP (1) JPS57606A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984857A (en) * 1989-01-17 1991-01-15 Iowa State University Research Foundation, Inc. Linearization of scan velocity of resonant vibrating-mirror beam deflectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984857A (en) * 1989-01-17 1991-01-15 Iowa State University Research Foundation, Inc. Linearization of scan velocity of resonant vibrating-mirror beam deflectors

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