JPS56123567A - Magnification controller for optical system scanning mechanism - Google Patents

Magnification controller for optical system scanning mechanism

Info

Publication number
JPS56123567A
JPS56123567A JP2609980A JP2609980A JPS56123567A JP S56123567 A JPS56123567 A JP S56123567A JP 2609980 A JP2609980 A JP 2609980A JP 2609980 A JP2609980 A JP 2609980A JP S56123567 A JPS56123567 A JP S56123567A
Authority
JP
Japan
Prior art keywords
optical system
scanning mechanism
generating means
system scanning
drive section
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
JP2609980A
Other languages
Japanese (ja)
Inventor
Hiroshi Koide
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 JP2609980A priority Critical patent/JPS56123567A/en
Publication of JPS56123567A publication Critical patent/JPS56123567A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)

Abstract

PURPOSE:To reduce a mechanical moving part and to enable to speed up an optical system scanning mechanism, by providing the 1st pulse generating means producing a pulse signal relating to the 1st drive section which is standardized. CONSTITUTION:The 1st drive section 20 is directly or indirectly fitted with the 1st pulse generating means 22 consisting of encoders, and pulse signals are sequentially generated in relation with the operation of the 1st drive section 20. The signal output from the 1st pulse generating means 22 (frequency in fb) is wave-shaped at the amplifier (including wave shape circuit) 23 and then input to the 1st phase loked loop PLL-1. Thus, for example, the method controlling the revolution of a motor and stopping it at the home position are used. Thus, since only few mechanical moving parts are required for this magnification controller, the high speed optical system scanning mechanism is realized.
JP2609980A 1980-03-04 1980-03-04 Magnification controller for optical system scanning mechanism Pending JPS56123567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2609980A JPS56123567A (en) 1980-03-04 1980-03-04 Magnification controller for optical system scanning mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2609980A JPS56123567A (en) 1980-03-04 1980-03-04 Magnification controller for optical system scanning mechanism

Publications (1)

Publication Number Publication Date
JPS56123567A true JPS56123567A (en) 1981-09-28

Family

ID=12184141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2609980A Pending JPS56123567A (en) 1980-03-04 1980-03-04 Magnification controller for optical system scanning mechanism

Country Status (1)

Country Link
JP (1) JPS56123567A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173858A (en) * 1981-04-20 1982-10-26 Fuji Xerox Co Ltd Scale factor adjusting device of copier
JPS58184940A (en) * 1982-04-23 1983-10-28 Fuji Xerox Co Ltd Original platen driving controller
JPS592026A (en) * 1982-06-28 1984-01-07 Canon Inc Variable power image forming device
JPS5919936A (en) * 1982-07-26 1984-02-01 Fuji Xerox Co Ltd Optical system controller for copying machine
JPS61124931A (en) * 1984-11-21 1986-06-12 Canon Inc Variable power image forming device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173858A (en) * 1981-04-20 1982-10-26 Fuji Xerox Co Ltd Scale factor adjusting device of copier
JPH0119570B2 (en) * 1981-04-20 1989-04-12 Fuji Xerox Co Ltd
JPS58184940A (en) * 1982-04-23 1983-10-28 Fuji Xerox Co Ltd Original platen driving controller
JPS592026A (en) * 1982-06-28 1984-01-07 Canon Inc Variable power image forming device
JPH0548459B2 (en) * 1982-06-28 1993-07-21 Canon Kk
JPS5919936A (en) * 1982-07-26 1984-02-01 Fuji Xerox Co Ltd Optical system controller for copying machine
JPH0377507B2 (en) * 1982-07-26 1991-12-10 Fuji Xerox Co Ltd
JPS61124931A (en) * 1984-11-21 1986-06-12 Canon Inc Variable power image forming device

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