JPS57138615A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
JPS57138615A
JPS57138615A JP56023523A JP2352381A JPS57138615A JP S57138615 A JPS57138615 A JP S57138615A JP 56023523 A JP56023523 A JP 56023523A JP 2352381 A JP2352381 A JP 2352381A JP S57138615 A JPS57138615 A JP S57138615A
Authority
JP
Japan
Prior art keywords
galvanomirror
signal
changed nonlinearly
waveform changed
scan
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
JP56023523A
Other languages
Japanese (ja)
Inventor
Masami Imamoto
Hideto Iwaoka
Muneki Ran
Akira Ote
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP56023523A priority Critical patent/JPS57138615A/en
Publication of JPS57138615A publication Critical patent/JPS57138615A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
    • H04N1/1135—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors for the main-scan only

Abstract

PURPOSE:To scan a plane in an equal speed with a simple constitution, by driving a galvanomirror with a signal which has the waveform changed nonlinearly for time. CONSTITUTION:A galvanomirror 6 is driven by a signal (i), which has the waveform changed nonlinearly for time, obtained by synthesizing a saw-tooth wave S1 and a signal S2, which becomes a cosine wave in a section nT<t<(n+1)T [(n) is an integer and T is the period], in a required proportion by addition, and the irradiation luminous flux due to a light source 1 and a lens 2 is reflected by the mirror 6 to scan a photosensitive paper 7 or the like optically, and thus, the speed of movement of a light spot due to the scanning light on the projection face of the photosensitive paper 7 becomes constant. Consequently, the plane is scanned in an equal speed in a simple constitution where optical systems such as an ftheta lens are unnecessary. Otherwise, galvanomirror driving signal information which is stored in an ROM or the like and has the waveform changed nonlinearly is read out to drive the galvanomirror.
JP56023523A 1981-02-19 1981-02-19 Optical scanning device Pending JPS57138615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023523A JPS57138615A (en) 1981-02-19 1981-02-19 Optical scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023523A JPS57138615A (en) 1981-02-19 1981-02-19 Optical scanning device

Publications (1)

Publication Number Publication Date
JPS57138615A true JPS57138615A (en) 1982-08-27

Family

ID=12112799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023523A Pending JPS57138615A (en) 1981-02-19 1981-02-19 Optical scanning device

Country Status (1)

Country Link
JP (1) JPS57138615A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117517A (en) * 1984-11-13 1986-06-04 Fuji Photo Film Co Ltd Method for correcting scanning speed of galvanometer
JPS63115114U (en) * 1987-01-20 1988-07-25
JPH02211416A (en) * 1989-02-13 1990-08-22 Anritsu Corp Deflector and outside diameter measuring instrument formed by using this deflector
JPH03295463A (en) * 1990-04-12 1991-12-26 Hitachi Software Eng Co Ltd Fluorescent electrophoresis pattern reader
JP2005338450A (en) * 2004-05-27 2005-12-08 Harmonic Drive Syst Ind Co Ltd Driving method and system of galvanic scanner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838023A (en) * 1971-09-16 1973-06-05
JPS5430854A (en) * 1977-08-12 1979-03-07 Canon Inc Two-dimensional scanner
JPS56126820A (en) * 1980-03-12 1981-10-05 Hitachi Ltd Light deflection device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838023A (en) * 1971-09-16 1973-06-05
JPS5430854A (en) * 1977-08-12 1979-03-07 Canon Inc Two-dimensional scanner
JPS56126820A (en) * 1980-03-12 1981-10-05 Hitachi Ltd Light deflection device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117517A (en) * 1984-11-13 1986-06-04 Fuji Photo Film Co Ltd Method for correcting scanning speed of galvanometer
JPH0462048B2 (en) * 1984-11-13 1992-10-05 Fuji Photo Film Co Ltd
JPS63115114U (en) * 1987-01-20 1988-07-25
JPH02211416A (en) * 1989-02-13 1990-08-22 Anritsu Corp Deflector and outside diameter measuring instrument formed by using this deflector
JPH03295463A (en) * 1990-04-12 1991-12-26 Hitachi Software Eng Co Ltd Fluorescent electrophoresis pattern reader
JP2005338450A (en) * 2004-05-27 2005-12-08 Harmonic Drive Syst Ind Co Ltd Driving method and system of galvanic scanner

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