JPS548522A - Electromagnetic controller of cameras - Google Patents

Electromagnetic controller of cameras

Info

Publication number
JPS548522A
JPS548522A JP7351377A JP7351377A JPS548522A JP S548522 A JPS548522 A JP S548522A JP 7351377 A JP7351377 A JP 7351377A JP 7351377 A JP7351377 A JP 7351377A JP S548522 A JPS548522 A JP S548522A
Authority
JP
Japan
Prior art keywords
cameras
electromagnetic controller
dustproof case
signal member
electromagnet
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
JP7351377A
Other languages
Japanese (ja)
Other versions
JPS611732B2 (en
Inventor
Hideaki Miyagawa
Ryoichi Ida
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 JP7351377A priority Critical patent/JPS548522A/en
Publication of JPS548522A publication Critical patent/JPS548522A/en
Publication of JPS611732B2 publication Critical patent/JPS611732B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shutters For Cameras (AREA)
  • Shutter-Related Mechanisms (AREA)

Abstract

PURPOSE: To perfectly prevent the entry of dust into dustproof case by disposing a permanent magnet to the circumference of the take-out port at one end of the signal member of the dustproof case which contains an electromagnet, its suction member and the signal member operating cooperatively with this, and hermetically sealing the spacing thereof with magnetic fluid.
COPYRIGHT: (C)1979,JPO&Japio
JP7351377A 1977-06-21 1977-06-21 Electromagnetic controller of cameras Granted JPS548522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7351377A JPS548522A (en) 1977-06-21 1977-06-21 Electromagnetic controller of cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7351377A JPS548522A (en) 1977-06-21 1977-06-21 Electromagnetic controller of cameras

Publications (2)

Publication Number Publication Date
JPS548522A true JPS548522A (en) 1979-01-22
JPS611732B2 JPS611732B2 (en) 1986-01-20

Family

ID=13520393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7351377A Granted JPS548522A (en) 1977-06-21 1977-06-21 Electromagnetic controller of cameras

Country Status (1)

Country Link
JP (1) JPS548522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339190A (en) * 1980-01-08 1982-07-13 Canon Kabushiki Kaisha Electromagnetically driven focal plane shutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339190A (en) * 1980-01-08 1982-07-13 Canon Kabushiki Kaisha Electromagnetically driven focal plane shutter

Also Published As

Publication number Publication date
JPS611732B2 (en) 1986-01-20

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