JPS57147625A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS57147625A
JPS57147625A JP3356181A JP3356181A JPS57147625A JP S57147625 A JPS57147625 A JP S57147625A JP 3356181 A JP3356181 A JP 3356181A JP 3356181 A JP3356181 A JP 3356181A JP S57147625 A JPS57147625 A JP S57147625A
Authority
JP
Japan
Prior art keywords
drum
original
lens
optical axis
reflective mirrors
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
JP3356181A
Other languages
Japanese (ja)
Other versions
JPH0216499B2 (en
Inventor
Hisashi Yamada
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 JP3356181A priority Critical patent/JPS57147625A/en
Priority to US06/352,713 priority patent/US4447147A/en
Priority to DE19823208264 priority patent/DE3208264A1/en
Publication of JPS57147625A publication Critical patent/JPS57147625A/en
Publication of JPH0216499B2 publication Critical patent/JPH0216499B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE:To separate a drum and a lens from each other spatially to make a reflective mirror small-size, by constituting a scanning system in the side of an image field so that the optical axis of incidence and the optical axis of exit are parallel by <=3 odd reflective mirrors and moving this optical system in the half of the moving speed of a photoreceptor. CONSTITUTION:The light of a slit region of an original 1 is projected onto a drum 5 through reflective mirrors 7, 8, and 9 and a light flux regulating member 6 by a lens 2. An optical axis R1 of incidence and an optical axis R2 of exit are set in parallel, and relfective mirrors 7, 8, and 9 constitute a scanning system, and these reflective mirrors are moved as one body in the direction of the tangent of movement of the drum 5 in the half of the peripheral speed of the drum 5, and the whole of the original is copied with the original 1 and the lens 2 fixed. A scanning system M consisting of reflective mirrors 7, 8, and 9 is moved in the direction of (x) for the original 1 and the lens system 2. In respect to the scanning system M, constituent reflective mirrors are moved as one body or are moved independently of one another.
JP3356181A 1981-03-09 1981-03-09 Optical scanner Granted JPS57147625A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3356181A JPS57147625A (en) 1981-03-09 1981-03-09 Optical scanner
US06/352,713 US4447147A (en) 1981-03-09 1982-02-26 Optical scanning device
DE19823208264 DE3208264A1 (en) 1981-03-09 1982-03-08 OPTICAL SCANNER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3356181A JPS57147625A (en) 1981-03-09 1981-03-09 Optical scanner

Publications (2)

Publication Number Publication Date
JPS57147625A true JPS57147625A (en) 1982-09-11
JPH0216499B2 JPH0216499B2 (en) 1990-04-17

Family

ID=12389954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3356181A Granted JPS57147625A (en) 1981-03-09 1981-03-09 Optical scanner

Country Status (1)

Country Link
JP (1) JPS57147625A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54122132A (en) * 1978-03-16 1979-09-21 Ricoh Co Ltd Slit exposure method for photreceptor in copier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54122132A (en) * 1978-03-16 1979-09-21 Ricoh Co Ltd Slit exposure method for photreceptor in copier

Also Published As

Publication number Publication date
JPH0216499B2 (en) 1990-04-17

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