JPS5553366A - Exposure optical system of electrophotographic copier - Google Patents

Exposure optical system of electrophotographic copier

Info

Publication number
JPS5553366A
JPS5553366A JP12773578A JP12773578A JPS5553366A JP S5553366 A JPS5553366 A JP S5553366A JP 12773578 A JP12773578 A JP 12773578A JP 12773578 A JP12773578 A JP 12773578A JP S5553366 A JPS5553366 A JP S5553366A
Authority
JP
Japan
Prior art keywords
original platen
synchronization
shutter curtain
optical system
original
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
JP12773578A
Other languages
Japanese (ja)
Inventor
Norio Kajiwara
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 JP12773578A priority Critical patent/JPS5553366A/en
Publication of JPS5553366A publication Critical patent/JPS5553366A/en
Pending legal-status Critical Current

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  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To enable sure operation to be obtained with a simple construction by driving the shutter curtain having an opening nearly equal to the effective image region of an original platen in synchronization with the original platen.
CONSTITUTION: The images of the original placed on a transparent original platen 1 are subsequently formed on plural photoreceptors moving in synchronization to the movement of the original platen 1 through the static optical system having plural exposure slits 3a thru 3c. A shutter curtain 31 having an opening equal to or slightly larger than the effective image region S of the original platen 1 is so positioned that its opening aligns to the region S and is spread below the original platen 1 so that only during each slit 3 is contributing to imaging the light is passed through that slit 3. This shutter curtain 31 is so arranged as to be driven in synchronization to the original platen 1.
COPYRIGHT: (C)1980,JPO&Japio
JP12773578A 1978-10-17 1978-10-17 Exposure optical system of electrophotographic copier Pending JPS5553366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12773578A JPS5553366A (en) 1978-10-17 1978-10-17 Exposure optical system of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12773578A JPS5553366A (en) 1978-10-17 1978-10-17 Exposure optical system of electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS5553366A true JPS5553366A (en) 1980-04-18

Family

ID=14967379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12773578A Pending JPS5553366A (en) 1978-10-17 1978-10-17 Exposure optical system of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5553366A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63169635A (en) * 1987-01-08 1988-07-13 Minolta Camera Co Ltd Copying device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63169635A (en) * 1987-01-08 1988-07-13 Minolta Camera Co Ltd Copying device

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