JPS559567A - Electromagnetic release device - Google Patents

Electromagnetic release device

Info

Publication number
JPS559567A
JPS559567A JP8257078A JP8257078A JPS559567A JP S559567 A JPS559567 A JP S559567A JP 8257078 A JP8257078 A JP 8257078A JP 8257078 A JP8257078 A JP 8257078A JP S559567 A JPS559567 A JP S559567A
Authority
JP
Japan
Prior art keywords
shutter button
circuit
flip
power source
pulse signal
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
JP8257078A
Other languages
Japanese (ja)
Inventor
Saburo Numata
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.)
Fujinon Corp
Original Assignee
Fuji Photo Optical 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP8257078A priority Critical patent/JPS559567A/en
Publication of JPS559567A publication Critical patent/JPS559567A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Shutters For Cameras (AREA)

Abstract

PURPOSE: To obtain always optimum exposure irrespective of the speed of depresssing a shutter button by providing a timer circuit which actuates when a power source switch goes ON to a release mechanism.
CONSTITUTION: When a power source switch 7 is turned ON by the half-push of a shutter button 3, the pulse signal produced in the connection point 23 is sent to a flip-flop circuit 27 to reset this. When the shutter button 3 is further half-pushed, a start switch 9 goes ON and the potential of the connection point 25 lowers down to "L". On the other hand, the foregoing pulse signal is delayed by the specified time in a timer circuit 26 and is inputted to the flip-flop circuit 27 to set this, then the output terminal Q becomes "L". As a result, a sequence control circuit 29 is started through NOR circuit 28 and the specified operation is accomplished. In this way, always optimum exposure may be obtained irrespective of the speed of depressing the shutter button.
COPYRIGHT: (C)1980,JPO&Japio
JP8257078A 1978-07-07 1978-07-07 Electromagnetic release device Pending JPS559567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8257078A JPS559567A (en) 1978-07-07 1978-07-07 Electromagnetic release device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8257078A JPS559567A (en) 1978-07-07 1978-07-07 Electromagnetic release device

Publications (1)

Publication Number Publication Date
JPS559567A true JPS559567A (en) 1980-01-23

Family

ID=13778138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8257078A Pending JPS559567A (en) 1978-07-07 1978-07-07 Electromagnetic release device

Country Status (1)

Country Link
JP (1) JPS559567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5867321U (en) * 1981-10-31 1983-05-07 日本電産コパル株式会社 Camera release circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173439A (en) * 1974-12-23 1976-06-25 Canon Kk
JPS5236024A (en) * 1975-09-16 1977-03-19 Canon Inc Actuating device for camera

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173439A (en) * 1974-12-23 1976-06-25 Canon Kk
JPS5236024A (en) * 1975-09-16 1977-03-19 Canon Inc Actuating device for camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5867321U (en) * 1981-10-31 1983-05-07 日本電産コパル株式会社 Camera release circuit

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