JPS5785044A - Film feed system - Google Patents

Film feed system

Info

Publication number
JPS5785044A
JPS5785044A JP16214080A JP16214080A JPS5785044A JP S5785044 A JPS5785044 A JP S5785044A JP 16214080 A JP16214080 A JP 16214080A JP 16214080 A JP16214080 A JP 16214080A JP S5785044 A JPS5785044 A JP S5785044A
Authority
JP
Japan
Prior art keywords
perforation
perforations
capacitor
circuit
pulses
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
JP16214080A
Other languages
Japanese (ja)
Inventor
Akira Takahashi
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 JP16214080A priority Critical patent/JPS5785044A/en
Priority to US06/320,930 priority patent/US4431292A/en
Priority to DE3145594A priority patent/DE3145594C2/en
Priority to DE3152998A priority patent/DE3152998C2/en
Priority to DE3152997A priority patent/DE3152997C2/de
Publication of JPS5785044A publication Critical patent/JPS5785044A/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
    • G03B1/00—Film strip handling
    • G03B1/60—Measuring or indicating length of the used or unused film; Counting number of exposures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
  • Winding Of Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

PURPOSE:To generate two pulses per perforation by detecting adjacent parts of the parts between the perforations and perforations of a film. CONSTITUTION:In a circuit 5 constituted of an inverter N1, a capacitor C4, etc., the perforation signals from a perforation detecting circuit 1 are differentiated in a differentiating circuit consisting of the capacitor C4, etc., and are fed to an OR circuit OR2. The signals are next inverted in an inverter N1, are differentiated in a differentiating circuit consisting of a capacitor C5, etc., and are fed to an OR circit OR2. Hence, the output pulses of the OR2 are generated by each one when the part on a film F detected by an LED and a photodiode PD moves from a perforation to the part between perforations and from the part between the perforations to a perforation. Hence, with such constitution, two pulses are generated per perforation.
JP16214080A 1980-11-18 1980-11-18 Film feed system Pending JPS5785044A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16214080A JPS5785044A (en) 1980-11-18 1980-11-18 Film feed system
US06/320,930 US4431292A (en) 1980-11-18 1981-11-13 Film feeding circuit
DE3145594A DE3145594C2 (en) 1980-11-18 1981-11-17 Control circuit for the film transport motor of a still camera
DE3152998A DE3152998C2 (en) 1980-11-18 1981-11-17 Control circuit for the film transport motor of a still camera
DE3152997A DE3152997C2 (en) 1980-11-18 1981-11-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16214080A JPS5785044A (en) 1980-11-18 1980-11-18 Film feed system

Publications (1)

Publication Number Publication Date
JPS5785044A true JPS5785044A (en) 1982-05-27

Family

ID=15748788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16214080A Pending JPS5785044A (en) 1980-11-18 1980-11-18 Film feed system

Country Status (1)

Country Link
JP (1) JPS5785044A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345286A (en) * 1993-05-11 1994-09-06 Eastman Kodak Company Method and apparatus for controlling film drive

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121524A (en) * 1973-03-20 1974-11-20
JPS50116027A (en) * 1974-02-25 1975-09-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121524A (en) * 1973-03-20 1974-11-20
JPS50116027A (en) * 1974-02-25 1975-09-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345286A (en) * 1993-05-11 1994-09-06 Eastman Kodak Company Method and apparatus for controlling film drive

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