Photography – Camera detail – Film restraining means or pressure plate
Reexamination Certificate
1999-06-23
2001-06-12
Gray, David M. (Department: 2851)
Photography
Camera detail
Film restraining means or pressure plate
C396S541000
Reexamination Certificate
active
06244760
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a camera, and relates, more particularly, to a camera using a film cartridge of a type for automatically guiding out a film from the cartridge when the film cartridge is loaded into the camera.
A camera of this type has conventionally been provided by having a film cartridge chamber, a film winding chamber and a film rail formed in one unit together with a camera main body by an injection molding of a metal or a synthetic resin; the film rail being disposed between the film cartridge chamber and the film winding chamber, for guiding the move of a film between the film cartridge chamber and the film winding chamber.
This type of camera is configured with predetermined sizes between the film exit of the film cartridge chamber and an end part of the film rail at the film cartridge side such that, when a film cartridge to be accommodated in the film cartridge chamber is a film cartridge of a new system (IX240), a film is guided out securely from the film cartridge of the new system in the film cartridge chamber toward the film rail through the film exit, without causing the film to be stuffed or scratched.
In other words, these predetermined sizes are recommended for the purpose of the film cartridge of the new system (IX240).
By the way, according to the above-described conventional camera, since the film cartridge chamber, the film winding chamber and the film rail are formed integrally with a frame of the camera main body, it has been difficult to structure a variety of cameras by using this frame.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide a camera which makes it possible to provide structures of many kinds of cameras at low cost, and which can always guide securely a film from a film cartridge unit to a rail plate unit.
In order to achieve the above object, according to one aspect of the present invention, there is provided a camera using a film cartridge for pressing out a film when the film cartridge is loaded into a film cartridge chamber, the camera comprising:
a film cartridge unit having the film cartridge chamber; and
a film rail plate unit different from the film cartridge unit, having a film rail for guiding the move of the film pressed out from the film cartridge,
wherein the film cartridge unit is provided with a guide route for guiding the film pressed out from the film cartridge
The film cartridge unit and the rail plate unit can be formed independently of each other.
Therefore, various kinds of film cartridge units and rail plate units can be prepared according to kinds of films and lens mirror frame units used in cameras. By mutually combining a film cartridge unit and a rail plate unit selected from these various kinds of units according to the need, it is possible to structure as many kinds of cameras as possible.
Among many kinds of cameras, there are those which use common units. This makes it possible to structure many kinds of cameras at low cost.
Further, by forming a film cartridge unit and a rail plate unit independently of each other, it is possible to set precisely the flow of a melted resin or a melted metal optimum for forming the respective units. Thus, it is possible to decrease the respective dimensions and weights of the units.
Furthermore, since the film cartridge unit has a structure for securely guiding out a film from the film cartridge chamber to the rail plate unit, any kind of camera formed by using this film cartridge unit can always guide securely the film from the film cartridge unit to the rail plate unit.
In order to achieve the above object, according to another aspect of the present invention, there is provided a camera using a film cartridge for pressing out a film when the film cartridge is loaded into a film cartridge chamber, the camera comprising:
a film cartridge unit having the film cartridge chamber; and
a film rail plate unit formed independently of the film cartridge unit and being mechanically connected to the film cartridge unit, for guiding the move of the film pressed out from the film cartridge, the film rail plate unit having an aperture facing the film,
wherein the film cartridge unit is provided with a guide route for guiding the film pressed out from the film cartridge.
This camera also functions in a similar manner to that of the camera of the above one aspect of the present invention, and also has similar effects.
In the camera according to this invention having the above-described structure, it is preferable that the film cartridge to be accommodated in the film cartridge chamber is a film cartridge of a new system such as IX240 or the like and that the above predetermined structure is formed based on prescribed recommended sizes.
However, the film cartridge unit and the above predetermined structure of the camera according to this invention can also be structured to be able to handle other films including, for example, the conventional 35 mm films, for the film cartridge other than the film cartridge of the new system.
In order to achieve the above object according to still another aspect of the present invention, there is provided a camera structured by combining a plurality of units, the camera comprising:
a film cartridge unit having a film cartridge chamber into which the film cartridge is loaded; and
a film rail plate unit formed independently of the film cartridge unit and being mechanically connected to the film cartridge unit, for guiding the move of the film pressed out from the film cartridge, the film rail plate unit having an aperture facing the film,
wherein the film cartridge unit is provided with a guide route for guiding the film pressed out from the film cartridge.
Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out hereinafter.
REFERENCES:
patent: 4344685 (1982-08-01), Milatz et al.
patent: 4982909 (1991-01-01), Pagano
patent: 5585876 (1996-12-01), Kobayashi
patent: 5708888 (1998-01-01), Nishizawa
patent: 5748989 (1998-05-01), Sangregory et al.
patent: 5754905 (1998-05-01), Yamamoto
patent: 5887211 (1999-03-01), Nakagawa et al.
patent: 5993076 (1999-11-01), Fujii et al.
Takahashi Shinya
Ue Takaaki
Yoshida Hitoshi
Frishauf, Holtz Goodman, Langer & Chick, P.C.
Gray David M.
Olympus Optical Co,. Ltd.
LandOfFree
Camera having mechanism for securely guiding out film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Camera having mechanism for securely guiding out film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera having mechanism for securely guiding out film will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2532928