Electric circuit control unit of camera

Abstract

Abstract PURPOSE: To prevent wasteful consumption of electric power by actuating the electric circuits necessary for photographing only when a film is surely wound on a spool. CONSTITUTION: When the broad part 8b of a film 8 is wound on a spool 7, the broad part 8b contacts with a projection 4a, and causes the projection 4a to disengage from an inserting part 7a by overcoming the energizing force of a spring 3, thereby a film guide 4 rotates clockwise. The clocking lever 2 integral with the guide 4 also rotates clockwise and retreats the other end 2b from the course of a release plate 1, then shutter release is set free and along with this, switches 11a, 70a open; therefore, a transistor 24 goes ON, only after which circuits 21, 22, 30W32 are usable. Hence, the wasteful consumption of electric power may be prevented. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Takeshi Okuyama
• 👤 Toshiaki Hoizumi
• 👤 Hiroshi Wakabayashi

Bibliographic Details