Photography – Exposure data from film container
Reexamination Certificate
1999-05-03
2001-05-15
Lee, Eddie C. (Department: 2851)
Photography
Exposure data from film container
C396S389000, C396S390000, C396S515000
Reexamination Certificate
active
06233405
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a camera and a film cartridge display setting apparatus adapted to a film cartridge including a display means for displaying information as to whether a film is used or unused.
2. Description of the Related Art
Japanese Unexamined Patent Publication No. 2-114248 proposes a film cartridge which has means for displaying film information as to whether a film is unused (unexposed) or used (exposed) when the film cartridge is ejected from a camera. In addition, Japanese Unexamined Patent Publication No. 4-301829 proposes a film cartridge which has means for separately displaying film information as to whether all frames of a film are used for photographing (hereinafter, referred to as all-frames exposed) or part of the frames are used for photographing (hereinafter, referred to as partially exposed). The means for displaying the film information used in these film cartridges is operatively coupled to a film supply spool of the cartridge. After completion of rewinding of the film of the camera, the film supply spool is rotated to a predetermined rotation position following the rewinding operation, thereby setting a display of information in response to the predetermined rotation position.
However, in the event that the cartridge is not ejected from the camera after completion of rewinding of the film, e.g., after setting of the display of information, when vibration and shock are added to the camera, the film supply spool rotates, and the display of information is changed thereby. As a result, a state of the film different from the true state may be displayed, or the display may become unclear.
Japanese Unexamined Patent Publication No. 4-349444 proposes a method of clearly setting the display of the cartridge without being affected by vibration of the camera in which the film supply spool is rotated to a predetermined rotation position in mechanical association with the ejection of the cartridge so as to set the display of information upon ejection of the cartridge.
According to this method, however, only “all-frames exposed” is equally displayed even if the film is rewound in the “partially exposed” or “unexposed” state. As a result, the true state of the film may disagree with the displayed information.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, there is provided a camera or a cartridge indicator setting apparatus adapted to a film cartridge including an indicator operatively coupled to a film supply spool provided in the film cartridge. The camera or apparatus comprises a storage device which stores information to be indicated by the indicator of the film cartridge; and a setting device for driving, in response to an operation for ejecting the film cartridge which has been loaded, the film supply spool of the film cartridge which has been stopped after completion of rewinding of a film, and for setting the indicator of the film cartridge in accordance with the information stored by the storage device, whereby the indicator of the cartridge to be ejected is always set correctly even if vibration and shock are added to the film cartridge which has been loaded on the camera or apparatus.
According to another aspect of the present invention, there is provided a camera or a cartridge indicator setting apparatus adapted to a film cartridge including an indicator operatively coupled to a film supply spool provided in the film cartridge. The camera or apparatus comprises a setting device for driving the film supply spool of the film cartridge loaded to set the indicator of the film cartridge after rewinding of a film; a determination device for determining whether it is necessary to reset the indicator of the film cartridge; and a control device for causing, in response to an operation for ejecting the film cartridge which has been loaded, the setting device to reset the indicator of the film cartridge when the determination device determines that it is necessary to reset the indicator, whereby the indicator of the cartridge to be ejected is always set correctly even if vibration and shock are applied to the film cartridge which has been loaded on the camera or apparatus, and whereby the cartridge can be promptly ejected.
Other aspects of the present invention will become apparent from the following description of the preferred embodiments.
REFERENCES:
patent: 5138350 (1992-08-01), Cocca
patent: 5159365 (1992-10-01), Takahashi
patent: 5414482 (1995-05-01), Iwai et al.
patent: 5457510 (1995-10-01), Yamazaki
patent: 5539484 (1996-07-01), Wakabayashi
patent: 5541681 (1996-07-01), Cocca et al.
patent: 5598236 (1997-01-01), Ueda et al.
patent: 5612757 (1997-03-01), Amano
patent: 5614971 (1997-03-01), O'Leary
patent: 5724621 (1998-03-01), Serita et al.
patent: 2-114248 (1990-04-01), None
patent: 4-301829 (1992-10-01), None
patent: 4-349444 (1992-12-01), None
Shikaumi Masao
Toyoda Yasuhiro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Lee Eddie C.
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