JPH0535394Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a photographic film packaging unit (hereinafter referred to as a ``lens-equipped film unit'') provided with an exposure function for photographing in advance.

[Background of the idea]

In conventional photography, it is customary to load film into a camera. However, only a small number of people carry a camera with them all the time, and it is inconvenient that they do not have a camera with them when they want to take a picture. In that case, it would be very helpful if you could purchase a lens-equipped film unit from your local store just like you would buy regular photographic film, and then request DPE for each lens-equipped film unit after shooting, just like you would with conventional photographic film. It's convenient.
U.S. Patent No. 2933027,
The technology was disclosed in Utility Model Publication No. 39-33924.

However, the films used in these applications had a serious problem in being removed from the lens-equipped film unit and developed after the unit had been used. That is, if the lens-equipped film unit is broken, the exposed film will come out intact. In order to prevent the film from fogging when broken, it is necessary to break the film unit in a dark room, or special equipment is required, which poses a problem in that the film cannot be processed in the same way as regular film in a film processing laboratory.

[Purpose of invention]

The object of the present invention is to improve the handling of photographed film in conventional lens-attached film.

[Summary of the idea]

In order to achieve the above object, the present invention includes a photographing mechanism such as a photographic lens and a shutter in a light-tight case, and also provides a lens-fitted film unit in which a roll of film is loaded before assembling the light-tight case. a first film container having a tip of the spool protruding from its end surface and having an unexposed film wound around the spool; a spool having a tip of the film pulled out from the first film container fixed; a second film container having a tip protruding from its end surface and having the same shape and compatibility with the container of the first film container;
A film supply chamber and a film winding chamber are housed in a light-tight case with film entrances and exits facing each other, and spool ends protruding from the first and second film containers are oriented in the same direction,
It is characterized in that the external operating means is engaged with the tip of the protruding spool of the second film container.

[Example of idea]

Preferred embodiments of the lens-fitted film unit according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows the external appearance of a lens-fitted film unit according to the present invention. An example will be explained in which an existing 35 mm cartridge is loaded into this unit during the manufacturing process.

First, the unit main body 10 will be explained.
4 is a photographing lens, 16 is a light-shielding tube for the viewfinder, 1
8 is a shutter release button, and 20 is a film winding knob. A light-shielding tube 2 is formed around the photographic lens 14 so as to expand concentrically in a stepwise manner.
2 is formed, and this light-shielding tube 22 with stepped steps prevents unnecessary diffused reflection from occurring during photographing. Similarly, the light shielding tube 16 for the finder
A step-like step is also formed on the surface, which prevents diffuse reflection of light and makes it easier to observe the subject.

FIG. 2 shows the internal structure of the lens-fitted film unit according to the present invention. In FIG. 2, a film storage chamber 30 is formed on the left side of the photographing frame 40 of the unit main body 10, and a film winding chamber 32 is formed on the right side. A light-shielding film cartridge 29 is stored in the film storage chamber 30 with the cartridge shaft end protruding downward as shown in the figure. A film 34 is wound and stored in a roll on the shaft 31 of the film cartridge 29 in advance. The film 34 is pulled out from the film storage chamber 30 toward the right, and its leading end 34A is guided to a light-shielding film cartridge 36 disposed within the film winding chamber 32. That is, the leading end 34A of the film 34 is engaged with the winding shaft 38 of the film cartridge 36, and is wound into the film cartridge 36 by rotating the film winding shaft 38. A shaft end portion 38a of the winding shaft 38 projects downward from the cartridge 38 in the same way as the supply side cartridge. This film cartridge 36 has an entrance 36a formed in the tangential direction of the cylindrical container, and the film 34 is passed through the film cartridge 3 from this entrance 36a.
It is designed to be supplied within 6 days. Further, the film winding shaft 38 protruding from the lower end of the cartridge is connected to gear transmission mechanisms 20a and 20b as shown in FIG.
The winding knob 20 is connected to the winding knob 20 exposed to the outside of the unit main body 10 shown in FIG. Therefore, by rotating the winding knob 20, the film 34 can be wound into the film cartridge 36 one frame at a time.

The film 34 is loaded into the main body 10, for example, in the following manner when manufacturing a lens-fitted film unit. That is, only the leader portion of the film 34 previously wound around the shaft 31 of the film cartridge 29 is pulled out, and the entire film cartridge 29 is loaded into the storage chamber 30 of the main body 10, and the empty film cartridge 36 is transferred to the winding chamber. Load it into 32. Next, the leading end of the film 34 is wound around the take-up shaft 38 of the take-up chamber 32, and the cover is placed on the unit main body 1.
Seal 0. In this case, it is necessary to form the winding shaft 38 in advance so that the leading end of the film 34 can be easily engaged therewith. The above method has the advantage that the film loading operation can be carried out in a bright room. Another way to load the film is to load only the leading end of the film roll from the cartridge 29 into the empty cartridge 36.
The cartridge 29 with the film in it and the cartridge 36 with only the film leader wound around it are wound around the take-up shaft 38 so that they do not come off.
A possible work method is to load the paper into the supply chamber 30 and the winding chamber 32, which are on opposite sides of the paper. In any case, a method that is easy to automate may be used.
Incidentally, when inserting the cartridges 29 and 36 from the back cover side, it is convenient if the opening edges of the storage chamber 30 and the winding chamber 32 are made of an elastically deformable member.

An exposure frame 40 is formed in the unit main body 10,
Furthermore, a shutter mechanism 42 is disposed in the exposure frame 40 behind the lens 14. Shutter mechanism 4
2 is provided with a shutter blade (not shown),
The shutter release operation is performed by pressing down the shutter release button 18.

The operation of the lens-fitted film unit according to the present invention constructed as described above is as follows. First, when the shutter release button 18 is pressed down and a shutter release operation is performed, light from the subject passes through the photographic lens 14 and onto the film 34.
The photographic frame will be exposed to light. When the winding knob 20 is rotated after photographing is completed, the film winding shaft 38 rotates, and one frame of photographed film is wound into a light-shielding film cartridge 36. Thereafter, this operation is repeated continuously, and all the photographed films are stored in the light-shielding film cartridge 36.

Therefore, in the embodiment of the present invention constructed as described above, all of the photographed film is stored in the light-shielding film cartridge 36, so that after photographing, the lens-equipped film unit can be taken to the film processing laboratory and the photographed film can be transported to the film processing laboratory. All that is required is to break or separate the film unit, open the back cover of the film unit, and take out the entire film cartridge 36, which has the advantage of eliminating the need for complicated film handling operations.

In the above explanation, it has been explained that an existing 35 mm cartridge is used as a film cartridge, but it is not necessary to use a 35 mm cartridge. A method may also be used in which a film cartridge having a film passage and a light-shielding property is formed so as to be separable from the unit when forming the lens-equipped film unit.

[Effect of idea]

As explained above, according to the lens-equipped film unit of the present invention, each time the film is wound, the film is stored in the light-shielding film cartridge, so that even if the back cover is opened, the photographed film will not be exposed to light. This eliminates the need for troublesome film winding operations. As a result, in the film processing laboratory that receives the used camera, the film cartridge can be taken out in a bright room, and the processing work can be carried out smoothly. In particular, if two 35mm film cartridges, which are currently widely used, are used on the film supply side and the film winding side,
There is no need to prepare a special container for the film used in the lens-fitted film unit.
Since the film can be provided at a very low cost, there is an advantage that the entire unit can be provided at a low cost. Also, since the ends of the spool that protrude from the end of the cartridge are oriented in the same direction, the height of the unit can be made lower than when the ends of the spool protrude in opposite directions. , it becomes possible to form a compact film unit.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external shape of a lens-equipped film unit according to the present invention, FIG. 2 is a cross-sectional view showing the internal structure of the lens-equipped film unit along the line - in FIG. 1, and FIG. 3 is a lens-equipped film unit. FIG. 3 is a cross-sectional view of the attached film unit as seen from the back. 10...Film unit with lens, 14...
Shooting lens, 18...Shutter release button,
20... Winding knob, 29... Film cartridge, 30... Film storage chamber, 32... Film winding chamber, 34... Film, 36... Film cartridge, 38... Winding shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] A lens-equipped film unit in which a photographing mechanism such as a photographic lens and a shutter is provided in a light-tight case, and a roll of film is loaded before the light-tight case is assembled, the first spool; a first film container having a tip of the first spool protruding from its end surface and having an unexposed film wound around the first spool; A second spool is inserted in the opposite direction to the spool, and the leading end of the film pulled out from the first film container is fixed to the second spool, and the leading end of the second spool protrudes from the end surface of the first film container. 1st
A second film container oriented in the same direction as the spool tip is housed in a light-tight case in a film supply chamber and a film winding chamber with film entrances and exits facing each other, and an external operating means is connected to the second film container. A film unit with a lens, which is engaged with the tip of a protruding spool.