Title:
FILM DETECTING DEVICE OF FILM HOLDER
Document Type and Number:
Japanese Patent JP3452994
Kind Code:
B2
Abstract:
PURPOSE: To prevent a film from being spoilt by such a reason that a photograph is taken though the film in a film holder is finished and the film holder is removed from a camera main body though the film remains and a reverse cover of the film holder is opened though the film remains by making the existence of the film in the film holder detectable.
CONSTITUTION: A photoreflector 17 to detect the existence of a film 51 is arranged on a film holder 10 which houses a film pack 50 and is installed on an installing seat 6 on the camera main body side. A circuit board connected to the photoreflector 17 is arranged in the film holder 10, and a connecting terminal which can contact with this circuit board is arranged on the installing seat 6 on the camera main body side.
More Like This:
| WO/1989/008869 | A LIGHT-TIGHT CASSETTE |
| JPH0672996 | [Title of Invention] Photographing device with self-monitor |
| WO/1989/012250 | FILM PACKET |
Inventors:
Masao Akiyama
Harumi Ogawa
Harumi Ogawa
Application Number:
JP27115194A
Publication Date:
October 06, 2003
Filing Date:
November 04, 1994
Export Citation:
Assignee:
Nitto Optical Co., Ltd.
International Classes:
G03B17/26; G03B17/52; G03C3/00; (IPC1-7): G03C3/00; G03B17/26; G03B17/52
Domestic Patent References:
| JP59172636A | ||||
| JP483239A | ||||
| JP5333442A | ||||
| JP53136825A | ||||
| JP629243U | ||||
| JP558929U |
Attorney, Agent or Firm:
Hiroshi Arafune