| 摘要 |
PURPOSE:To prevent an erroneous photographing while no film is loaded as well as to confirm the photographing function, by detecting the presence or absence of a loaded film as well as the open/close state of the camera back cover and controlling the shutter action by an OR output of the detection signal and the release signal. CONSTITUTION:In case the back cover 10 is left open and no film cassette is loaded into a chamber 11, the 1st and 2nd push-button switches 23 and 28 are connected to contacts 25 and 32 each. Then the shutter functions with a push of a shutter release button 9. When the film cassette is loaded and the cover 10 is closed, the switches 23 and 28 are connected to contacts 26 and 33 respectively. Then the shutter functions with a push of the button 9. In case the cover 10 is closed and the film cassette 12 is unloaded or vice verse, the shutter does not operate. |
