Title:
FILM UNIT WITH LENS
Document Type and Number:
Japanese Patent JP3650640
Kind Code:
B2
Abstract:
PURPOSE: To prevent the reloading of a photographic film in a used film unit with a lens.
CONSTITUTION: A large perforation 39 and a small perforation 40 having a standard size are formed in the photographic film 22 and two pairs of large and small teeth 56 and 57 having sizes so as to engage with the large and small perforations 39 and 40 are provided to be symmetric in rotation on a driven sprocket 52. Even if the film sold at a store is loaded in the film unit with the lens which is provided with the driven sprocket 52, the large teeth 56 can not be engaged with perforations 58 having the standard size, that is, the reloading is impossible. Moreover, when the large teeth 56 are shaved to engage with the perforations 58, the large teeth 56 come off from the driven sprocket 52 because of a notched part 59, that is, the reloading is impossible.
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| JPS56137333 | FILM FEED MECHANISM |
| WO/2003/056387 | ADJUSTABLE MICRO DEVICE FEEDER |
Inventors:
Hiroshi Katsura
Application Number:
JP5009595A
Publication Date:
May 25, 2005
Filing Date:
March 09, 1995
Export Citation:
Assignee:
Fuji Photo Film Co., Ltd.
International Classes:
G03B1/24; G03B17/00; G03B17/04; G03B17/42; G03C3/00; (IPC1-7): G03B17/04; G03B1/24; G03B17/00; G03B17/42; G03C3/00
Domestic Patent References:
| JP5019368A | ||||
| JP5333477A | ||||
| JP5333478A | ||||
| JP63193136A |
Attorney, Agent or Firm:
Kazunori Kobayashi