JPS52155523A - Diaphragm device for slit exposur type variable magnification copier - Google Patents

Diaphragm device for slit exposur type variable magnification copier

Info

Publication number
JPS52155523A
JPS52155523A JP7260176A JP7260176A JPS52155523A JP S52155523 A JPS52155523 A JP S52155523A JP 7260176 A JP7260176 A JP 7260176A JP 7260176 A JP7260176 A JP 7260176A JP S52155523 A JPS52155523 A JP S52155523A
Authority
JP
Japan
Prior art keywords
slit
exposur
variable magnification
type variable
diaphragm device
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
JP7260176A
Other languages
Japanese (ja)
Other versions
JPS592010B2 (en
Inventor
Toyokazu Satomi
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 JP51072601A priority Critical patent/JPS592010B2/en
Publication of JPS52155523A publication Critical patent/JPS52155523A/en
Priority to US06/108,187 priority patent/US4279497A/en
Publication of JPS592010B2 publication Critical patent/JPS592010B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To maintain a constant quantity of the exposure light to a photosensitive body irrespective of the change of multiplication in the variable multiplication copier of slit exposure tye by shifting the slit formation plate while interlocked with the action of variable multiplication.
COPYRIGHT: (C)1977,JPO&Japio
JP51072601A 1976-05-18 1976-06-19 Aperture device of slit exposure variable magnification copying machine Expired JPS592010B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP51072601A JPS592010B2 (en) 1976-06-19 1976-06-19 Aperture device of slit exposure variable magnification copying machine
US06/108,187 US4279497A (en) 1976-05-18 1979-12-27 Electrostatic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51072601A JPS592010B2 (en) 1976-06-19 1976-06-19 Aperture device of slit exposure variable magnification copying machine

Publications (2)

Publication Number Publication Date
JPS52155523A true JPS52155523A (en) 1977-12-24
JPS592010B2 JPS592010B2 (en) 1984-01-17

Family

ID=13494073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51072601A Expired JPS592010B2 (en) 1976-05-18 1976-06-19 Aperture device of slit exposure variable magnification copying machine

Country Status (1)

Country Link
JP (1) JPS592010B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066987A (en) * 1988-12-19 1991-11-19 Asahi Kogaku Kogyo Kabushiki Kaisha Shading board for copying apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5066987A (en) * 1988-12-19 1991-11-19 Asahi Kogaku Kogyo Kabushiki Kaisha Shading board for copying apparatus

Also Published As

Publication number Publication date
JPS592010B2 (en) 1984-01-17

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