JPH0228520Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a photographic film device, which is capable of photographing and developing photographic film one by one.

(Prior Art) Conventional photography film has a structure in which it is continuously wound into a roll so that a plurality of frames can be photographed, and is generally developed after all the frames have been photographed.

Furthermore, as described in Utility Model Application Publication No. 10763 of 1930, a structure in which photographic film is mounted in a cassette case is known.

Furthermore, as described in Utility Model Application Publication No. 9321 of 1930, a photographic dry plate was wrapped in light-shielding paper and stored in a cassette case, and the light-shielding paper was pulled out from the cassette case to take a photograph. Photographic plates made using this method are known.

(Problem that the invention attempts to solve) The conventional continuous roll of photographic film is
Normally, all frames are photographed and then processed, and even if one frame or several frames need to be photographed, the entire roll of film must be processed, which is inconvenient and uneconomical. There were problems such as.

Furthermore, the photographic film described in Utility Model Application Publication No. 10763 of 1933 is simply a photographic film mounted in a cassette case, and there is no light shielding means to prevent the photographic film from being exposed to light.
There are problems with handling, and the structure described in Utility Model Application Publication No. 9321 of 1932 has a structure in which a photographic dry plate is wrapped with light-shielding paper and attached to a cassette case, so the light-shielding properties of the photographic dry plate are not good. There is a problem,
Furthermore, it takes time to attach a photographic drying plate, and if it is made of a hard material like a photographic drying plate, it is possible to pull out the rolled light-shielding paper, but if it is made of a flexible material like film, it is not possible to pull out the light-shielding paper. This poses problems such as the possibility that the film may be deformed when the paper is pulled out.

This invention was developed in view of the above problems.It is possible to take a single picture using photographic film, and the film is mounted on a mount frame for easy handling.It also prevents the photographic film from being exposed to light. The light blocking effect is reliable, and by attaching the light blocking body formed of an endless curtain to the cassette case by suspending it on a roller, the light blocking body moves smoothly and exposure can be ensured. To provide an economical photographic film device in which a cassette case can be used repeatedly.

[Structure of the idea]

(Means for Solving the Problems) The photographic film device of the present invention has an exposure window opened on the front side and a film storage space with a film insertion portion opened on one side, and can be detachably attached to a camera. a photographic film mounted on a mount frame which is removably inserted into the space from a film insertion portion on one side of the cassette case; and a photographic film mounted on a mount frame which is provided in the cassette case and which opens and closes the exposure window. The light shielding body is formed of an endless film-like band, an exposure opening that matches the exposure window of the cassette case is formed in the film-like band, and the light shielding body is attached to the cassette case. The cassette case is movably suspended on rollers that are pivotally supported at both ends of the space, and a light-shielding cloth material is provided at the edge of the film insertion opening of the cassette case.

(Function) The photographic film device of the present invention is installed with the exposure window of the cassette case facing the imaging plane of the lens of the camera, and the light shield provided on the cassette case is opened to expose the film by operating the shutter of the camera. This allows you to take pictures. When taking pictures, the shield that opens and closes the light-shielding window of the cassette case moves smoothly using rollers, ensuring that the exposure aperture of the light-shielding body is aligned with the exposure window of the cassette case, and then the light-shielding window of the cassette case is stored in the cassette case. The photographic film thus constructed is securely shielded from light by the light-shielding cloth material at the edge of the film insertion opening, and is easy to handle.

(Example) 1 is a cassette case formed into a flat box shape,
On the front side, there is an exposure window 5 that fits the size of, for example, 24 x 36 mm (35 mm format), and a film insertion section 4 is formed on one side, and a light shielding section is formed between the film holding pieces 6 and 7 provided inside. A film storage space 8 is formed. Also, this cassette case 1
A raised light-shielding cloth material 9 is provided in the film insertion opening 4 by pasting or the like. An exposure opening 10 is formed corresponding to the exposure window 5 of the front film holding piece 6.

Reference numeral 11 denotes a photographic film, and the film 11 is mounted on a mount frame 12, and the mount frame 12 is inserted into and removed from the film insertion section 4 of the cassette case 1 into the space 8. There is.

Further, rollers 13 and 14 are mounted on both ends of the space 8 of the cassette case 1, and these rollers 1
A light shielding body 15 formed of an endless film-like band movably provided between the front and rear surfaces of the cassette case 1 and the restraining pieces 6 and 7 is suspended between 3 and 14.
An exposure opening 16 corresponding to and matching the exposure window 5 is formed in the notch.

Further, a guide hole 17 is formed on the back surface of the cassette case 1 in the direction of movement of the light shield 15, and a knob 18 that moves along the guide hole 17 is attached to the light shield 15.

Next, the operation of this embodiment will be explained.

Mount the camera so that the exposure window 5 of the cassette case 1 faces the imaging plane of the lens of the camera, operate the knob 18 to move the light shield 15, and align the exposure window 5 with the exposure aperture 16 of the light shield 15. to expose the film 11. Next, operate the shutter of the camera to expose the camera, and after photographing, move the knob 18 in the opposite direction.
The light shielding member 15 is moved to close the exposure window 5, the cassette case 1 is removed from the camera, and the film 11 is taken out from the cassette case 1 and developed in a dark room.

When operating this knob 18 to move the light shield 15 and align the exposure window 5 with the exposure aperture 16 of the light shield 15 to expose the film 11, and when moving the light shield 15 to open the exposure window 5, When closing, the knob 18 is guided and moved along the guide hole 17 to ensure reliable movement, and the knob 18 is positioned by engaging with the edge of the guide hole 17, so that the exposure window 5 can be opened and closed reliably. Moreover, the light shielding body 15 is
Since the photographic film 11 is suspended from the camera, it can be smoothly moved without deforming the photographic film 11. Furthermore, after shooting, as shown in FIG. 1, by forming a concave arc-shaped notch in the center of the film insertion part 4 of the cassette case 1, the mount frame 12 at this notch position can be easily grasped. The film 11 can be easily taken out from the cassette case 1.

Note that at least the front surface of the cassette case 1 is molded with a magnetically conductive material or coated with a magnetically conductive material, and a permanent magnet is provided on the cassette mounting surface of the camera, so that the cassette case 1 is attached to the camera by adsorption. . Furthermore, the cassette case 1 may be attached to the camera using a holder provided on the camera, or the cassette case 1 may be attached to the camera so that the mounting surface is not exposed to light when the exposure window 5 of the cassette case 1 is opened. Appropriate means can be applied if the structure is suitable.

Furthermore, the film insertion section 4 of the cassette case 1
Since the light-shielding cloth material 9 is provided at the edge of the cassette case 1, the storage space 8 of the cassette case 1 is shielded from light, and the film 11 stored in this space 8 is not exposed to light.

In the above embodiment, the 35 mm film 11
As explained above, the film is divided into frames, so as shown in Figures 5 and 6, 36×
It is also easy to load 36mm size film.

Next, the structure of another embodiment will be explained with reference to FIGS. 7 and 8.

In the structure shown in the embodiment, feed holes 20 are formed at predetermined intervals along the side edge of the light shielding body 15 formed of an endless film-like band at predetermined intervals. Feed wheel 22 with pawls 21
A mating hole 23 for engaging the cassette case 1 is formed on one side of the front surface of the cassette case 1.

The feed wheel 22 is provided at the mounting portion of the cassette case 1 of the camera, so that the feed wheel 22 meshes with the feed hole 20 of the light shield 15 through the meshing hole 23 when the cassette case 1 is mounted on the camera. Make it. The feed wheel 22 is rotated by a predetermined amount by an operating mechanism provided in the camera, so that the exposure opening 16 is aligned with the exposure window 5 of the cassette case 1. After photographing, the light shielding body 15 is moved back to close the exposure window 5 and the cassette case 1 is removed.

This operating mechanism uses a structure well known as a film winding mechanism for a camera. For example, by rotating a knob having a knurl that is partially exposed on the outside of the camera, the rotating shaft 24 of the feed wheel 22 is connected to the gear provided on the rotating shaft of the knob through gear meshing. A structure in which the feed wheel 22 is rotated through a gear mechanism meshed with a gear provided on the crankshaft by rotating a crankshaft provided on the outside of the camera; A structure in which the rotating shaft of this lever is rotated by a lever provided, and the feed wheel 22 is rotated via a gear mechanism that meshes with a gear provided on this rotating shaft, and furthermore, a switch mechanism provided in the camera is operated. The electric motor is driven by the feed wheel 22 through a gear mechanism.
A structure that rotates a predetermined amount can be used.

Further, as shown in FIG. 1, a hole 25 for detecting the sensitivity of the film 11 is formed in the cassette case 1.
Depending on the position of this hole 25, a plurality of sensitivity setting switch buttons provided on the mounting surface of the camera cassette case 1 are selectively pressed to set the exposure amount in accordance with the sensitivity of the film 11. . In addition, as this photosensitivity detection means, a magnetic field, for example, a permanent magnet is attached to the cassette case 1, and a plurality of Hall elements provided on the mounting surface of the cassette case of the camera are selected according to the position of the permanent magnet on the cassette case. It is also possible to set the exposure amount according to the sensitivity.

Furthermore, the shutter mechanism of the camera can be made operable when the cassette case 1 is properly set on the mounting surface of the camera's cassette case. In this case, for example, a permanent magnet is attached to the cassette case 1, a Hall element is arranged on the attachment surface of the cassette case 1 of the camera, and when the cassette case 1 is attached normally, the operation of the Hall element Alternatively, the shutter mechanism of the camera may be unlocked. Furthermore, the operation of this Hall element drives the electric motor installed in the camera,
The feed wheel 22 that operates the light shielding body 15 of the cassette case 1 is rotated to open the exposure window 5 of the cassette case 1.
It is also possible to make it open.

Furthermore, the cassette case 1 may contain a developing solution for the film 11, so that the developing process can be performed within the cassette case after photographing.

Furthermore, as shown in Fig. 9, the cassette case 1
One end of a plurality of shutter blades 26 constituting the light shielding body 15 is rotatably attached to the periphery of the exposure window 5, and a shutter operating piece 27 is provided connected to each end of the shutter blade 26. It is also possible to make the shutter blade 26 open the exposure window 5 by moving the shutter blade 27.

Furthermore, as shown in FIG. 10, the exposure window 5 of the cassette case 1 can be made to have a size that equally divides the film 11, and the film mount 12 can be moved by a predetermined amount each time a photograph is taken, so that a plurality of frames can be photographed.

[Effect of idea]

According to the present invention, photographic film stored in a cassette case can be photographed and developed one by one, which is economical.Moreover, since the film is attached to a mount frame, it is easy to handle and flatness is improved. The film is retained in the cassette case, eliminating the need for a film holder.Furthermore, a light-shielding cloth material is provided on the edge of the film insertion opening of the cassette case, so the film is held in a light-shielded manner within the cassette case, making it easy to handle.Furthermore, the light shield is an endless film. Since the light shielding body was formed of an endless film-like strip and suspended on a roller, the light shielding body could be moved smoothly and the exposure window of the cassette case could be opened and closed reliably. This, together with the fact that the film is attached to the mount frame, allows the film to be easily and securely loaded by simply inserting it through the film insertion opening of the cassette case.Furthermore, since the film can be inserted and removed freely in the cassette case, It can be used repeatedly and economically.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from the front side of a photographic film device showing an embodiment of the present invention, Fig. 2 is a perspective view from the back side of the same, Fig. 3 is an enlarged sectional view of the same, and Fig. 4
The figure is a front view of the light shielding body same as above, FIG. 5 is a front view of a cassette case of a photographic film device showing another embodiment, FIG. 6 is a rear view of the same as above, and FIG. 7 is a photographing film device showing another embodiment. 8 is an enlarged vertical sectional view of the same as the above, FIG. 9 is a front view of a cassette case of a photographic film device showing another embodiment, and FIG. 10 is a front view of the film device.
The figure is a front view of a cassette case of a photographic film device showing still another embodiment. 1...Cassette case, 4...Film insertion section, 5...Exposure window, 8...Film storage space,
9... Light-shielding cloth material, 11... Film for photography, 1
2... Mount frame, 13, 14... Roller, 15... Light shielding body, 20... Spread hole, 22...
Delivery car.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cassette case that is detachably attached to a camera and has an exposure window on the front and a film storage space with a film insertion section on one side; a photographic film attached to a mount frame that is removably inserted into the space from a film insertion portion on one side of the case; and a light shielding member provided in the cassette case for opening and closing the exposure window; The light shielding body is formed of an endless film-like band, an exposure opening that matches the exposure window of the cassette case is formed in this film-like band, and the light shielding body is supported pivotally at both ends of the space of the cassette case. 1. A photographic film device, characterized in that the photographic film device is movably suspended on rollers, and a light-shielding cloth material is provided on the edge of the film insertion opening of the cassette case. (2) The photographic film device according to claim 1, wherein the light shielding member is provided with a feed hole that engages with a feed wheel of a camera.