JPH04124653A - Photographic film cartridge - Google Patents

Abstract

PURPOSE:To easily separate a photographic film from a cartridge main body without any need for destroying operation for the cartridge main body and cutting operation for the photographic film at a developing laboratory by forming a cut in a special shape for connection with a spool at the tail of the photographic film. CONSTITUTION:When the photographic film 11 is all pulled out, the cut 16 for engagement engages a shaft 20 for engagement. The engagement part is made so narrow as to enable the breadthwise movement of the cut for engagement for the disengagement of the spool 12 from the shaft 20 for engagement. When the photographic film 11 which is drawn out of a film lead-out slot is moved as shown by an arrow A, the film is disengaged. This disengagement is facilitated since both edges of the tail part 11b are cut to size Ws and the tail end part 11b is exposed from the film lead-out slot.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic film cartridge for storing photographic film.

[Conventional technology]

In conventional photographic film cartridges, the photographic film is wound around the spool in a roll with the end of the photographic film locked to the spool. There is. The main body of the cartridge has a film drawer opening from which photographic film is pulled out, and when loaded into a camera, a predetermined amount of photographic film is fed out from the film drawer opening to take pictures. After shooting is completed, the photographic film cartridge is submitted by the user to a photo lab.

At the photo lab, the submitted photographic film cartridge is processed through a processing device. In this processing step, it is first necessary to cut the end of the photographic film with a cutter and separate the photographic film from the main body of the cartridge.

Further, there are times when it is necessary to destroy the main body of the cartridge in a darkroom or within the apparatus to remove the photographic film. The photographic film separated from the cartridge main body in this manner is subjected to development processing by applying it to a processing device.

[Problem B to be Solved by the Invention] However, the above-mentioned work requires manpower and time, and is not efficient.Furthermore, in the processing laboratory, the cartridge body with a small amount of the end of the photographic film remaining must be removed. It was disposed of as scrap.

[Purpose of the invention]

The present invention was made in consideration of such a background, and
To provide a photographic film cartridge in which the photographic film can be easily separated from the cartridge body and developed without requiring destruction of the cartridge body or cutting of the photographic film in a developing laboratory.

[Means to solve the problem]

In order to achieve the above object, in the photographic film cartridge of the present invention, the end of the photographic film serves as an engaging portion. The width of the engaging portion is as narrow as possible to allow movement of the engaging notch in the width direction for attachment and detachment from the engaging shaft of the spool. Furthermore, after being wound up, the gap between the spool inner width and the film width is reduced so that the engagement notch at the end of the film does not come off the spool's engagement axis.

Furthermore, the rotational position where the spool can be easily engaged can be easily seen from the outside of the cartridge body. Further, by providing a click portion on the cartridge body and the spool, the rotational position of the spool can be determined.

[Effect]

According to the above configuration, the end of the photographic film does not remain inside the cartridge body (if the spool and the cartridge body are molded from the same material, the material of the cartridge body can be recovered). Since the engagement shape is a simple shape, in the event of breakage, it is possible to cut out the damaged part and then form a new engagement shape at the end.

Embodiments of the present invention will be described in detail below with reference to the drawings.

〔Example〕

In FIG. 1 showing a first embodiment of a photographic film cartridge according to the present invention and FIG. 2 showing a main part of this first embodiment, this photographic film cartridge 10 is a
It consists of a spool 12 wound with a spool, and a cartridge main body 13 that rotatably stores the spool. This cartridge main body 13 is provided with a film drawer opening 14 for pulling out the photographic film 11, and a light shielding member 15 such as a telescope is provided at the back of this film drawer opening 14 to keep the interior of the cartridge main body 13 light-tight at all times. I have to.

The end of the photographic film 11 is latched to the spool 12, and when the photographic film 11 is completely pulled out from the film outlet 14 in this state, the photographic film 11 located from the tip of the photographic film 11 to the front of the film outlet 14 will be removed. The film width dimension of is Wl, and the film width dimension of the photographic film 11 located from this position to the end of the photographic film 11 is obtained by cutting out a length Ws from both edges of the film with the dimension W. The film width dimension is W2. The end portion 11b of the photographic film 11 whose film width dimension is Wz is indicated by hatching as shown in FIG. Two numbers 16 are provided.

The spool 12 has flanges 17 provided at both ends,
The shaft portion 18 supports these flanges 17. This shaft portion 18 is formed with an opening 19 into which the end portion 11b is inserted, and two engaging shafts 20 are provided within this opening 19.

The shape of the engagement notch 16 is such that it can be engaged with or separated from the engagement shaft 20 by moving the end portion 11b in the direction of arrow A or B shown in FIG. It has a shape. Since the dimension W cut out from the film width dimension W is a dimension that allows the movement, the film drawer opening 14
The movement can be easily performed by manipulating the photographic film 11 pulled out from the camera.

The shape of both edges of the photographic film 11 cut out by the dimension W is gently inclined with respect to the film winding direction, and when the photographic film 11 is wound, the light shielding member 15 There is no risk of getting caught. The dimension W of the shaft portion 18 in the film width direction is a dimension that allows the width dimension W1.

As shown in FIG. 1, both outer sides of the flange 17 are pivotally supported by the cartridge main body 13 and are exposed to the outside of the cartridge main body 13.

Patrone main body 13 with these flanges 17 exposed
A positioning mark portion 21 for determining the rotational position of the spool 12 is provided on one side of the spool 12 . A mark part 22 serving as a reference for the rotational position of the spool 12 is provided on the surface of the flange 17 exposed on the side surface, and the position of the mark part 22 is determined while rotating the spool 12. When the opening 19 of the spool 12 is aligned with the position, the spool 12 is in a rotational position in which the opening 19 of the spool 12 faces the direction of the film outlet 14 .

Hereinafter, the effects of the above configuration will be explained.

When the user submits the photographic film cartridge 10 to the processing laboratory, the photographic film 11 is pulled out from the cartridge main body 13 at the processing laboratory.
1 is completely pulled out, the engagement notch 16 is engaged with the engagement shaft 20, as shown in FIG. 3.

In this state, when the photographic film 11 pulled out from the film outlet 14 is moved in the direction of arrow A shown in FIG. 2, the locking is released.

This release can be easily performed because both edges of the end portion 11b are cut out by the dimension W5 and the end portion 11b is exposed from the film outlet 14.

In this manner, the photographic film 12 can be easily separated from the cartridge body 13 and developed at the developing laboratory without the need for destroying the cartridge body 13 or cutting the photographic film 12.

Furthermore, the negative film obtained after development can be stored in a separate cartridge main body 13. To briefly explain this operation, first, the spool 12 is rotated so that the mark part 22 marked on the spool 12 is aligned with the positioning mark part 21 marked on the cartridge main body 13. After that, the drawer opening 14 of the separated cartridge main body 13
A negative film is inserted into the film from its end 11b. This insertion is performed because the rotational position of the spool 12 is at the rotational position of the spool 120 with the opening 19 facing the direction of the film outlet 14 so that the engagement notch 16 and the engagement shaft 20 can be easily engaged. The portion 11b can be easily inserted into the opening 17. And photographic film 11
When the engaging shaft 20 is moved in the direction of arrow B shown in FIG.
and the engagement notch 16 are engaged with each other.

Thereafter, the negative film is stored in the separate cartridge body 13 by rotating the spool 12 in the film winding direction with a jig or the like. By returning the stored cartridge main body 13 to the user together with the printed photos, the process of cutting the negative film into lengths of six frames each, which is done in current photo labs, and the process of cutting these cuts. There is no need for a sheet or the like to house negative film, and the work efficiency can be improved in the developing laboratory.

In addition, in this embodiment, the engagement notch 16 and the engagement shaft 20
Marking portions 22 and 23 are provided to determine the rotational position of the spool 12 in order to easily lock the spool 12, but as another example, a jig or the like may be used to determine the rotational position of the spool 12. .

This jig 24, for example, as shown in FIG. 4, is made of two thin plate-like elastic bodies pasted together, and a passage is formed between them into which the end portion 11b of the negative film is inserted. This passage has 0 gaps of about 0.2-0.5 kaku,
The width dimension of the passage in the film width direction corresponds to the film width WI of the photographic film 11.

This jig 24 is provided with a guide stopper 24a, and when the guide stopper 24a and the drawer opening 14 are brought into contact with each other, the tip of the jig 24 is placed on the spool 12.
The rotational position of the spool 12 is positioned so that the opening 19 of the spool 12 is directed toward the film outlet 14, and
The length of the jig 24 inserted into the cartridge main body 13 from the film outlet 14 is defined. Note that the thin plate-like elastic body is made of a material such as metal or plastic.

Therefore, when such a jig 24 is used in a developing laboratory, the efficiency of the work of storing negative films in the cartridge main body 13 is surely improved.

Another method for determining the rotational position of the spool 12 in order to easily engage the engagement notch 16 and the engagement shaft 20 is to
It is also possible to have a structure in which a load is applied to the rotation of the spool 12 only when the spool 12 is in the rotational position facing the 17 and the cartridge main body 13 that pivotally supports it, there is a click mechanism 25.2 on the sliding part.
There are 6. According to this, when the rotation of the spool 12 is stopped at a position where a load is applied to the hand when the spool 12 is rotated by hand, the rotation position of the spool 12 is reached.

Next, a second embodiment of the photographic film cartridge according to the present invention will be described with reference to FIG.

In this embodiment, one engagement notch 16 and one engagement shaft 20 are provided in the end portion 11b of the photographic film 11 and the spool 12, respectively.

The end portion 11b of this photographic film 11 has a film width dimension W obtained by cutting out a length W5 from one edge of the film width dimension W of the photographic film 11.

The engagement notch 16 and the engagement shaft 20 are engaged by moving the photographic film 11 in the direction of arrow C shown in the figure. Of this movement, the movement amount W4 in the film width direction is shorter than the cutout length W. In addition, the length W of the shaft portion 18 of the spool 12 is formed to be approximately 0.05 to 0.5 times smaller than the film width dimension W of the photographic film 11 in the film width direction. It is something. It goes without saying that this embodiment also provides the same effects as described in the first embodiment.

Next, a third embodiment of the photographic film cartridge according to the present invention will be described with reference to FIG.

This embodiment is an example in which the photographic film 11 is moved only in the width direction of the film in order to engage the engagement notch 16 and the engagement shaft 20.

Therefore, the film width dimension W8 of the end portion 11b is fixed by the shaft portion 1 of the spool 12 so as to be locked by the movement.
In order to make the length W from one end of the photographic film to the center of the engagement shaft 20 shorter than the length W from one end of the photographic film to the center of the engagement shaft 20,
, Ws is the notch size.

As explained above, the scope of the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the invention described in the claims, and these also fall within the scope of the present invention. For example, the first
As explained in the embodiment, the engagement notch 16 and the engagement shaft 2
In order to easily lock the spool 12 with the cassette cartridge 13, the cartridge main body 13 and the spool 12 are provided with one marking portion 21, 22 for determining the rotational position of the spool 12.
Approximately the same effect can be obtained by providing these in three places, and these marking parts 21 and 22 can also be attached to the cartridge main body 13.
The same effect can be obtained with the one provided on the opposite side. Furthermore, as another example, an example in which the click mechanism 25.26 is provided has been described, but the click mechanism 25.2
It goes without saying that the same effect can be obtained even if the angle 6 is provided at a plurality of locations.

〔Effect of the invention〕

As described above, when the photographic film cartridge according to the present invention is submitted to a photofinishing laboratory, it can be easily separated into the photographic film and the cartridge body. In addition, after development, the obtained negative film can be stored in a separate cartridge body, which eliminates the work of cutting negative film into lengths of six frames, which is done in current photo labs. No need for sheets etc. to store cut negative film,
This has the effect of improving work efficiency in photo labs. moreover,
It is economical because there is no need to dispose of the main body of the cartridge as waste.

[Brief explanation of the drawing]

Figure 1 shows the first photographic film cartridge according to the present invention.
It is a perspective view showing an example. FIG. 2 is a perspective view showing the main parts of the first embodiment. FIG. 3 is a sectional view of the first embodiment. FIG. 4 shows another example of determining the rotational position of the spool. FIG. 5 is another example of determining the rotational position of the spool. Figure 6 shows the second photographic film cartridge according to the present invention.
FIG. 2 is a plan view showing an example. Figure 7 shows the third part of the photographic film cartridge according to the present invention.
FIG. 2 is a plan view showing an example. 10/11? 1b 12 ・ 13 ・ 14 ・ 16 ・ 17 ・ 18 ・ 19 ・ 20 ・ 21 ・ Photographic film cartridge, photographic film, end, spool, cartridge body, film drawer opening, engagement notch, flange, shaft, opening - Engagement shaft/positioning mark section 22...Marker section 24...Jig 25.26...Click mechanism. Figure 5 b

Claims (4)

[Claims] (1) In a photographic film cartridge in which a spool on which photographic film is wound is rotatably housed in a cartridge main body, and a film drawer opening for pulling out the photographic film is provided, the end of the photographic film is provided with the spool and the spool. A photographic film cartridge characterized in that a notch for connection is formed, and the width of the end of the photographic film provided with the notch is smaller than the width of the photographic film other than this end. (2) In order to align the rotational position of the spool with the engagement position, a convex portion or a concave portion for rotating the spool exposed outside the cartridge is provided at a constant position or at a constant angle with respect to the engagement position. A photographic film palone according to claim 1 characterized in that it is characterized by: (3) In order to adjust the rotational position of the spool to the engagement position, a click portion with a lightweight click feeling is provided on the Pallone main body and the spool, as set forth in claim 1 or 2. photo film palone. (4) The photographic film according to any one of claims 1 to 3, wherein a visible display portion is provided on the spool exposed outside the cartridge in order to adjust the rotational position of the spool to the engagement position. Palone.