JPS5722255A - Optical system drive device of copying machine - Google Patents

Optical system drive device of copying machine

Info

Publication number
JPS5722255A
JPS5722255A JP9626080A JP9626080A JPS5722255A JP S5722255 A JPS5722255 A JP S5722255A JP 9626080 A JP9626080 A JP 9626080A JP 9626080 A JP9626080 A JP 9626080A JP S5722255 A JPS5722255 A JP S5722255A
Authority
JP
Japan
Prior art keywords
optical system
photosensor
encoder
pulse signal
drum
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
JP9626080A
Other languages
Japanese (ja)
Inventor
Takehiro Yoshimura
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 JP9626080A priority Critical patent/JPS5722255A/en
Publication of JPS5722255A publication Critical patent/JPS5722255A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/526—Projection optics for slit exposure in which the projection optics move

Abstract

PURPOSE:To cause scanning speed of an optical system to exactly follow the peripheral speed of a photosensitive drum, by using a pulse signal corresponding to the peripheral speed of the drum as a reference input, and a pulse signal obtained from an encoder, corresponding to the scanning speed as a feedback signal. CONSTITUTION:Binary discrimination marks 12 on a photosensitive drum 7 are detected with a photosensor 8, and this pulse detected with the photosensor 8 is delivered to a phase comparator 14 as a reference input. The output of this comparator 14 is amplified in a power amplifier 15, and a driving motor 16 and an optical system 4 are drived. A linear type encoder 5 is provided along the main scanning route of the optical system 4, and a photosensor 11 detects output of the encoder 5 to feed back a pulse signal to the comparator 14, thus permitting the scanning speed of the optical system 4 to exactly follow the peripheral speed of the drum 7.
JP9626080A 1980-07-16 1980-07-16 Optical system drive device of copying machine Pending JPS5722255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9626080A JPS5722255A (en) 1980-07-16 1980-07-16 Optical system drive device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9626080A JPS5722255A (en) 1980-07-16 1980-07-16 Optical system drive device of copying machine

Publications (1)

Publication Number Publication Date
JPS5722255A true JPS5722255A (en) 1982-02-05

Family

ID=14160209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9626080A Pending JPS5722255A (en) 1980-07-16 1980-07-16 Optical system drive device of copying machine

Country Status (1)

Country Link
JP (1) JPS5722255A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06155035A (en) * 1992-11-18 1994-06-03 Honda Motor Co Ltd X type welding gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06155035A (en) * 1992-11-18 1994-06-03 Honda Motor Co Ltd X type welding gun

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