JPS576866A - Optical device for copying machine - Google Patents

Optical device for copying machine

Info

Publication number
JPS576866A
JPS576866A JP7985780A JP7985780A JPS576866A JP S576866 A JPS576866 A JP S576866A JP 7985780 A JP7985780 A JP 7985780A JP 7985780 A JP7985780 A JP 7985780A JP S576866 A JPS576866 A JP S576866A
Authority
JP
Japan
Prior art keywords
scanning mirror
mirror
recurrent
scanning
light
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
JP7985780A
Other languages
Japanese (ja)
Inventor
Nobuo Sakuma
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 JP7985780A priority Critical patent/JPS576866A/en
Publication of JPS576866A publication Critical patent/JPS576866A/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 provide a titled device of simple and compact construction by using half mirrors for a part or the whole of the 2nd scanning mirror group for correcting optical path length, and using a recurrent imaging element as an imaging element. CONSTITUTION:The reflected light from an original 1 irradiated by a lighting system 3 is fed via the 1st scanning mirror 7 and the 2nd scanning mirror 11 to a recurrent optical element 5. At this time, the 2nd scanning mirror 11 is a half mirror and therefore part of the light transmits through this, and falls onto a shielding member 12, where it is absorbed. Thence, the light recurred by the recurrent optical element 5 transmits through the 2nd scanning mirror 11, and is fed onto a photosensitive drum 6 rotating in synchronization with the scanning, by way of the slit S of the member 12 and a stationary mirror 10, whereby exposure is accomplished.
JP7985780A 1980-06-13 1980-06-13 Optical device for copying machine Pending JPS576866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7985780A JPS576866A (en) 1980-06-13 1980-06-13 Optical device for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7985780A JPS576866A (en) 1980-06-13 1980-06-13 Optical device for copying machine

Publications (1)

Publication Number Publication Date
JPS576866A true JPS576866A (en) 1982-01-13

Family

ID=13701861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7985780A Pending JPS576866A (en) 1980-06-13 1980-06-13 Optical device for copying machine

Country Status (1)

Country Link
JP (1) JPS576866A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890729A (en) * 1972-03-07 1973-11-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890729A (en) * 1972-03-07 1973-11-27

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