JPS523427A - Reflecting mirror's dust-proof device of duplicator's exposure mechani sm - Google Patents

Reflecting mirror's dust-proof device of duplicator's exposure mechani sm

Info

Publication number
JPS523427A
JPS523427A JP7933775A JP7933775A JPS523427A JP S523427 A JPS523427 A JP S523427A JP 7933775 A JP7933775 A JP 7933775A JP 7933775 A JP7933775 A JP 7933775A JP S523427 A JPS523427 A JP S523427A
Authority
JP
Japan
Prior art keywords
dust
exposure
mechani
duplicator
reflecting mirror
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
JP7933775A
Other languages
Japanese (ja)
Inventor
Hiroyuki Idenawa
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 JP7933775A priority Critical patent/JPS523427A/en
Publication of JPS523427A publication Critical patent/JPS523427A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE:By shutting the aperture of a lens housing, excepting the time of exposure process, to prevent the dust-flowing into inside of a lens housing.
JP7933775A 1975-06-27 1975-06-27 Reflecting mirror's dust-proof device of duplicator's exposure mechani sm Pending JPS523427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7933775A JPS523427A (en) 1975-06-27 1975-06-27 Reflecting mirror's dust-proof device of duplicator's exposure mechani sm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7933775A JPS523427A (en) 1975-06-27 1975-06-27 Reflecting mirror's dust-proof device of duplicator's exposure mechani sm

Publications (1)

Publication Number Publication Date
JPS523427A true JPS523427A (en) 1977-01-11

Family

ID=13687073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7933775A Pending JPS523427A (en) 1975-06-27 1975-06-27 Reflecting mirror's dust-proof device of duplicator's exposure mechani sm

Country Status (1)

Country Link
JP (1) JPS523427A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143729A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5847835U (en) * 1981-09-25 1983-03-31 キヤノン株式会社 Image forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143729A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0480450B2 (en) * 1981-02-27 1992-12-18 Fuji Photo Film Co Ltd
JPS5847835U (en) * 1981-09-25 1983-03-31 キヤノン株式会社 Image forming device
JPS6137002Y2 (en) * 1981-09-25 1986-10-27

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