JPS57197527A - Film winder and rewinder for camera - Google Patents

Film winder and rewinder for camera

Info

Publication number
JPS57197527A
JPS57197527A JP8338281A JP8338281A JPS57197527A JP S57197527 A JPS57197527 A JP S57197527A JP 8338281 A JP8338281 A JP 8338281A JP 8338281 A JP8338281 A JP 8338281A JP S57197527 A JPS57197527 A JP S57197527A
Authority
JP
Japan
Prior art keywords
motor
rewinding
turns
increased
contact
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
JP8338281A
Other languages
Japanese (ja)
Inventor
Shinji Tominaga
Toshinori Imura
Yasushi Nakamura
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP8338281A priority Critical patent/JPS57197527A/en
Priority to US06/381,717 priority patent/US4419001A/en
Publication of JPS57197527A publication Critical patent/JPS57197527A/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/42—Interlocking between shutter operation and advance of film or change of plate or cut-film
    • G03B17/425—Interlocking between shutter operation and advance of film or change of plate or cut-film motor drive cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

PURPOSE:To surely perform winding and rewinding, by providing a switch means which reverses a motor through the detection of increase in current caused by forced stop of motor at the end of film winding and keeps the rewinding state in response to the reversing. CONSTITUTION:When a motor 4 is forcibly stopped at the end of film winding, a current flowing to a motor is increased and a voltage drop with a resistor 57 is increased. Thus, transistors (TRs) 74 and 63 turn on and a TR56 turns off, the current flowing to the motor is interrupted, an electromagnetic relay 82 is energized and a switch 54 is selected to a contact 54b. A TR55 turns on with this changeover and the motor is reversed. Through the rotation of the motor, switches 21 and 22 are changed over to contacts 21c and 22c, a current flows to the motor via the contact 21c and rewinding is progressed.
JP8338281A 1981-05-29 1981-05-29 Film winder and rewinder for camera Pending JPS57197527A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8338281A JPS57197527A (en) 1981-05-29 1981-05-29 Film winder and rewinder for camera
US06/381,717 US4419001A (en) 1981-05-29 1982-05-24 Motor driven film wind-up and rewind device for cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8338281A JPS57197527A (en) 1981-05-29 1981-05-29 Film winder and rewinder for camera

Publications (1)

Publication Number Publication Date
JPS57197527A true JPS57197527A (en) 1982-12-03

Family

ID=13800865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8338281A Pending JPS57197527A (en) 1981-05-29 1981-05-29 Film winder and rewinder for camera

Country Status (1)

Country Link
JP (1) JPS57197527A (en)

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