JPH04123048A - Photographic film cartridge - Google Patents

Abstract

PURPOSE:To eliminate the need for cartridge breaking operation and photographic film cutting operation and to prevent cartridges from being disposed of by putting a photographic film which is pulled out of a cartridge back in the same cartridge. CONSTITUTION:One or plural leaf spring type film pressing plates 5 are fitted on the internal wall of a cartridge main body 1 and contact a spool 4. Then when the film 3 is inserted into a lead-out slot 2 while the spool 4 is rotated as shown by an arrow, the film 3 is wound around the spool 4 along the leaf spring type film pressing plates 5. Thus, the photographic film 3 which is drawn out of the cartridge is put back in the same cartridge. Consequently, the need for the cartridge breaking operation and photographic film cutting operation is eliminated and the cartridge is prevented from being disposed of.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a photographic film cartridge.

[Conventional technology]

Conventionally, photographic film is commercially available in a state where it is wound into a roll on a spool and stored in a cartridge body.

The main body of the cartridge has a film pull-out opening, and a predetermined amount of film is pulled out from the pull-out opening for photographing. After photographing, the film is processed in a processing machine. In this processing step, the rear end of the photographic film is cut with a cutter, so that the film is separated from the cartridge body. At this time, it is necessary to destroy the cartridge body in a dark room or inside the machine and take out the photographic film. However, the process requires manpower and time, is not efficient, and furthermore, the cartridge body and spool that are no longer needed must be disposed of as waste. For this reason, there has long been a desire for a cartridge that does not require the above-mentioned film removal operation and that does not generate unnecessary waste.

In order to realize such a cartridge, it is necessary to have a structure that makes it easy to remove the photographic film from the spool and reinsert the rear end of the film after processing without destroying the cartridge body and the spool. It is necessary to form a cartridge having a spool and a cartridge body.

[Problem to be solved by the invention]

The present invention has been made in view of the above, and by returning a photographic film pulled out from a cartridge to the same cartridge, it is possible to eliminate the need for destroying the cartridge and cutting the photographic film, and to provide a photographic film that does not dispose of the cartridge as waste. The purpose is to provide patronage.

[Means to solve the problem]

In order to achieve the above object, the photographic film cartridge of the present invention has one or more leaf spring-type film holding plates attached to the main body of the cartridge, each of which is constructed as follows, and the film is spooled while the film is inserted. The photographic film is fixed between the leaf spring type film pressing plate and the spool by rotating the spool. The photographic film is fixed by fixing a slit-processed cylinder to a spool, inserting the film while rotating the spool, and introducing the rear end of the photographic film into the slit. The photographic film is fixed by attaching a winding jig made of an elliptical columnar rubber-like elastic body to the spool and inserting the film while rotating the spool. The present invention is characterized in that a winding jig made of a rubber-like material in the shape of a cylinder is attached to the spool, and the photographic film is fixed by inserting the film while rotating the spool. The present invention is characterized in that one or more film holding plates arranged in the shape of an impeller are attached to the spool, and the photographic film is fixed by inserting the film while rotating the spool. It is characterized in that the spools are duplicated, slits are processed in both spools, and the rear end of the photographic film is bent by the slit in the inner spool and fixed so that it does not come off from the slit in the outer spool. The spool is shaped like a clip, and the rear end of the photographic film is sandwiched and fixed.

[Effect]

Each of the above-mentioned photographic film cartridges according to the present invention has a spool and cartridge main body that have a structure that allows them to be easily removed from the spool and reinserted without destroying the cartridge or spool or cutting the rear end of the photographic film. By rotating the spool from the outside, by applying a force to the photographic film in the direction of pulling it out from the cartridge, or by applying a force in the direction of inserting it, or by performing both of these operations at the same time, Alternatively, the photographic film can be attached to and removed from the spool by using an insertion guide. Furthermore, if the film is pulled out beyond a certain limit, the photographic film may come off the spool, making it impossible to rewind the film inside the camera or the like. In order to prevent this situation from occurring, it is preferable that the photographic film is provided with a hole to prevent the withdrawal limit from being exceeded.

According to the above structure of the present invention, the photographic film can be removed from the spool by rotating the spool until the leading end of the photographic film comes out and then pulling out the leading end of the photographic film. Insert the rear end of the photographic film through the film drawer opening and rotate the spool while pushing it in. Once the photographic film is completely fixed on the spool within the cartridge body, the photographic film can be reeled in simply by rotating the spool.

〔Example〕

First Embodiment FIG. 1 shows the external shape of the photo cartridge of this embodiment. The photographic film cartridge consists of a spool 4, a photographic film 3 wound around the spool 4, and a cartridge main body 1.

The spool 4 is disposed inside the cartridge main body l so as to be rotatable about an axis, and the cartridge main body l is provided with a film draw-out opening 2 for drawing out the film 3. A light-shielding member is attached to the film outlet 2 to maintain a light-tight state inside the cartridge.

FIGS. 2 and 3 show a sectional view and a perspective view of the cartridge of this embodiment. One or more leaf spring type film pressing plates 5 are attached to the inner wall of the cartridge main body 1. This pressing plate 5 is in contact with the spool 4. When the film is inserted from the drawer opening 2 while rotating the spool 4 in the direction of the arrow, the film is wound around the spool 4 while following the leaf spring type film holding plate 5. The leaf spring type film holding plate 5 is always in contact with the spool or the film, and always presses the film with a certain degree of force, and fixes the rear end of the film by the frictional force generated there.

Second Embodiment FIGS. 4 and 5 show a sectional view and a perspective view of a cartridge in a second embodiment. In the second embodiment, the same parts as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted.

A cylinder 6 having a plurality of slits is fixed to the spool 4. When the spool is rotated, the cylinder 6 also rotates together with the spool.The width of the slit is preferably the most suitable width for introducing the rear end of the film, and a plurality of shafts are arranged around the circumference as shown in Fig. 5. A case where the slit width is equivalently large or a case where a slit with a relatively small width is formed in a cylinder are considered. By introducing the film into the slit of the cylinder 6 and rotating the spool, the film is fixed and wound around the cylinder 6.

Third Embodiment FIGS. 6 and 7 show a sectional view and a perspective view of the cartridge of the third embodiment. An elliptical column 7 made of a rubber-like elastic body is fixed to the spool, and rotates together with the spool when the spool is rotated. The elliptical column 7 is separated from the inner wall of the cartridge by a certain distance, or is partially in contact with the inner wall of the cartridge.

When the film is inserted while rotating the spool, the film is fixed by friction with the elliptical cylinder 7, or by being sandwiched by a strong force between the elliptic cylinder 7 and the inner wall of the cartridge, and the film is fixed to the elliptic cylinder. It wraps around me. As the film wraps around and increases in thickness, the elliptical cylinder 7
is deformed and approaches a circular cylinder as shown by the two-dot chain line.It goes without saying that the cross-sectional shape of the elliptical cylinder 7 is not necessarily an ellipse, but may be any other shape such as a triangle or a quadrangle.

Fourth Embodiment FIGS. 8 and 9 show a sectional view and a perspective view of a cartridge in a fourth embodiment. Reference numeral 9 denotes a circular cylinder made of a rubber-like elastic body. It is not fixed to the spool 4, and when the spool 4 is rotated, it rotates together with the spool while being eccentrically deformed due to centrifugal force as shown in Fig. 8. do. As the film is inserted into the main body of the cartridge, the film is captured by the deformed circular column 9 and wound around the circular column 9.

Fifth Embodiment FIGS. 10 and 11 show a sectional view and a perspective view of the cartridge in the fifth embodiment. The plurality of film holding plates 10 arranged in the shape of an impeller are made of an elastic material, or the part fixed to the spool is movable, and can be folded along the circumference of the spool. . When the film is inserted while rotating the spool, the film is wound onto the spool due to friction between the film and the film holding plate 10 or because the film is sandwiched between the edge of the film holding plate 10 and the inner wall of the cartridge. When the spool rotates once after the start of winding the film, all the film holding plates 10 are folded, and the film is sandwiched between two adjacent film holding plates 10, thereby completing fixation.

Sixth Embodiment FIGS. 12 and 13 are a sectional view and an external view of a cartridge in a sixth embodiment. It has a double spool structure including an outer spool 11 having one or more slits and an inner spool 12 inserted into the outer spool 11. A slit extending in the axial direction of the spool is formed in the outer spool 11 and the inner spool 12. When the film is inserted, the rear end of the film passes through the slit in the outer spool 11 and reaches the slit in the inner spool 12. At this time, if the inner spool 12 is rotated while the outer spool 11 is fixed, the trailing end of the film will bend as shown in FIG. 14 and will not easily come off the spool. By rotating the outer spool 11 in this state, it is possible to wind the film around the spool, and when pulling out the film, it is also possible to remove it from the spool by pulling it strongly with a certain amount of force.

Seventh Embodiment FIGS. 15 and 16 are a sectional view of the cartridge and an external view of the clip-shaped spool in the seventh embodiment.

The clip part 13 of the clip-shaped spool 20 is pressed with strong force,
The rear end of the film is sandwiched and the film is clipped to the clip part 13.
When inserting the film into the film or removing it from the clip portion 13, insert the insertion guide 22 from the film drawer opening and pry open the clip. FIGS. 17 and 18 show the outer shape of the insertion guide and the state when the insertion guide 22 is inserted into the cartridge.

Eighth Embodiment FIG. 19 shows a photographic film cartridge in the eighth embodiment. All of the cartridges described in the first to seventh embodiments allow the film to be wound onto the spool and pulled out from the cartridge, so if the winding device inside the camera breaks down, the film can be pulled out from the cartridge. If the film is cut, the connection between the film and the spool will be broken, making rewinding impossible.

There is a possibility that the user may be forced to perform troublesome tasks such as opening the camera and reloading the film into the cartridge in the darkroom. This embodiment is intended to prevent such a situation.

A hole 14 for preventing excess draw-out is provided near the rear end of the film, and a mechanism for preventing excessive draw-out is provided in the cartridge main body 1, which includes an ejection pin 15 and a spring 16 that supports the ejection pin 15. If the film is pulled out within a range that does not exceed the pull-out limit excess prevention hole 14, the ejector pin 15 will not come out above the film surface, but if the film pull-out reaches a dangerous state, the pull-out limit excess prevention hole 14 will be removed. 14 appears, the protruding pin 15 supported by the blank 16 protrudes above the film surface and prevents the film from being pulled out. Alternatively, the power to the winding device is turned off by the protruding pin 15 protruding. This embodiment can be applied to the first to seventh embodiments described above.

〔Effect of the invention〕

As explained above, according to the present invention, by returning a photographic film pulled out from a cartridge to the same cartridge, it is possible to eliminate the need for destroying the cartridge and cutting the photographic film, and to prevent the cartridge from being disposed of as waste. The effect is that you can.

[Brief explanation of the drawing]

Figures 1, 2 and 3 are explanatory diagrams of the first embodiment, Figures 4 and 5 are explanatory diagrams of the second embodiment, and Figures 6 and 7 are explanatory diagrams of the third embodiment. 8 and 9 are explanatory diagrams of the fourth embodiment, FIGS. 10 and 11 are explanatory diagrams of the fifth embodiment, FIG. 12 is an explanatory diagram, and FIG. 19 is an explanatory diagram of the eighth embodiment. FIG. 1...Patrone body, 2...Film drawer opening, 3...Photographic film, ・Spool, ・Flat spring type film holding plate, ・Cylinder, ・Oval cylinder, ・Circular column, ・・Film holder Plate, ...Outer spool, ...Inner spool, ...Clip section, ...Drawer limit excess prevention hole, ...Eject pin, -.Spring.

Claims (1)

[Scope of Claims] (1) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and the photographic film is wrapped around the cartridge main body. In a photographic film cartridge provided with a film drawer opening for pulling out the film, one or more leaf spring-type film holding plates are attached to the main body of the cartridge, and the spool is rotated while inserting the film. A photographic film cartridge characterized in that the photographic film is fixed between a leaf spring type film holding plate and a spool. (2) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and the film drawer is used to pull out the photographic film into the cartridge main body. In a photographic film cartridge provided with a spout, a cylinder with a slit is fixed to the spool, the film is inserted while rotating the spool, and the rear end of the photographic film is introduced into the slit, thereby fixing the photographic film. A photographic film cartridge featuring the following. (3) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and a film drawer for pulling out the photographic film into the cartridge main body In a photographic film cartridge provided with a mouth, a winding jig made of an elliptical columnar rubber-like elastic body is attached to the spool, and the photographic film is fixed by inserting the film while rotating the spool. A photographic film cartridge featuring the following features: (4) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable about an axis, and a film drawer for pulling out the photographic film into the cartridge main body In a photographic film cartridge provided with a spout, a winding jig made of a rubber-like material having a circular cylinder shape is attached to the spool, and the photographic film is fixed by inserting the film while rotating the spool. Characteristic photographic film cartridge. (5) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and the film drawer is used to pull out the photographic film into the cartridge main body. In a photographic film cartridge provided with a spout, one or more film holding plates arranged in the shape of an impeller are attached to the spool, and the photographic film is fixed by inserting the film while rotating the spool. A photographic film cartridge featuring the following. (6) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and a film drawer for pulling out the photographic film into the cartridge main body In a photographic film cartridge provided with a spout, the spools are duplicated, slits are formed in both spools, and the rear end of the photographic film is bent by the slit of the inner spool to prevent it from coming off the slit of the outer spool. A photographic film cartridge that is fixed in place. (7) Consisting of a spool, a photographic film wound around the spool, and a cartridge main body, the spool is housed inside the cartridge main body so as to be rotatable around an axis, and the film drawer is used to pull out the photographic film into the cartridge main body. 1. A photographic film cartridge provided with a spout, characterized in that the spool is shaped like a clip, and the rear end of the photographic film is inserted and fixed therein. (8) The photographic film cartridge according to claim (7), characterized in that an insertion guide for removing the photographic film from the film drawer opening is inserted when the photographic film is removed from the spool or inserted into the spool. (9) Any one of claims (1) to (8), characterized in that the photographic film is inserted or pulled out only by rotating the spool from outside the cartridge body without destroying or disassembling the cartridge body. Photographic film cartridge described in section. (10) The photographic film cartridge according to any one of claims (1) to (8), further comprising a pull-out limit excess prevention hole for preventing the photographic film from coming off the spool.