JPS57120962A - Variable magnification copying device - Google Patents

Variable magnification copying device

Info

Publication number
JPS57120962A
JPS57120962A JP694681A JP694681A JPS57120962A JP S57120962 A JPS57120962 A JP S57120962A JP 694681 A JP694681 A JP 694681A JP 694681 A JP694681 A JP 694681A JP S57120962 A JPS57120962 A JP S57120962A
Authority
JP
Japan
Prior art keywords
lens
moved
accordance
discs
contraction
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
JP694681A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0216515B2 (enrdf_load_stackoverflow
Inventor
Tsuneki Inuzuka
Katsuyoshi Maejima
Masahiro Tomosada
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP694681A priority Critical patent/JPS57120962A/ja
Priority to DE19813141464 priority patent/DE3141464A1/de
Priority to GB8131406A priority patent/GB2087577B/en
Priority to DE3153482A priority patent/DE3153482C2/de
Priority to DE3153341A priority patent/DE3153341C2/de
Publication of JPS57120962A publication Critical patent/JPS57120962A/ja
Priority to GB08323166A priority patent/GB2128346B/en
Priority to US07/090,429 priority patent/US4839698A/en
Priority to US07436974 priority patent/US5008712B1/en
Publication of JPH0216515B2 publication Critical patent/JPH0216515B2/ja
Granted 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)
  • Optical Systems Of Projection Type Copiers (AREA)
JP694681A 1980-10-17 1981-01-19 Variable magnification copying device Granted JPS57120962A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP694681A JPS57120962A (en) 1981-01-19 1981-01-19 Variable magnification copying device
DE19813141464 DE3141464A1 (de) 1980-10-17 1981-10-19 "kopiergeraet"
GB8131406A GB2087577B (en) 1980-10-17 1981-10-19 Variable magnification photocopying
DE3153482A DE3153482C2 (enrdf_load_stackoverflow) 1980-10-17 1981-10-19
DE3153341A DE3153341C2 (enrdf_load_stackoverflow) 1980-10-17 1981-10-19
GB08323166A GB2128346B (en) 1980-10-17 1983-08-30 Variable magnification photocopying
US07/090,429 US4839698A (en) 1980-10-17 1987-08-26 Copying apparatus
US07436974 US5008712B1 (en) 1980-10-17 1989-11-16 Variable magnification copying apparatus and automatic shutdown therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP694681A JPS57120962A (en) 1981-01-19 1981-01-19 Variable magnification copying device

Publications (2)

Publication Number Publication Date
JPS57120962A true JPS57120962A (en) 1982-07-28
JPH0216515B2 JPH0216515B2 (enrdf_load_stackoverflow) 1990-04-17

Family

ID=11652392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP694681A Granted JPS57120962A (en) 1980-10-17 1981-01-19 Variable magnification copying device

Country Status (1)

Country Link
JP (1) JPS57120962A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219738A (ja) * 1983-05-30 1984-12-11 Ricoh Co Ltd 複写機光学系変倍装置
JPS604934A (ja) * 1983-06-23 1985-01-11 Tokinaa Kogaku Kk 変倍複写装置用レンズ系の設定位置停止装置
JPS60184237A (ja) * 1984-03-02 1985-09-19 Asahi Optical Co Ltd 変倍光学装置の制御回路

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219738A (ja) * 1983-05-30 1984-12-11 Ricoh Co Ltd 複写機光学系変倍装置
JPS604934A (ja) * 1983-06-23 1985-01-11 Tokinaa Kogaku Kk 変倍複写装置用レンズ系の設定位置停止装置
JPS60184237A (ja) * 1984-03-02 1985-09-19 Asahi Optical Co Ltd 変倍光学装置の制御回路

Also Published As

Publication number Publication date
JPH0216515B2 (enrdf_load_stackoverflow) 1990-04-17

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