JP2801987B2 - Photo film patrone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film cartridge in which a leading end of a photographic film is discharged from a port of a patrone body by rotating a spool.

[0002]

2. Description of the Related Art There is known a photographic film cartridge in which a photographic film is discharged from a port of a patrone body by rotating a spool in a photographic film feeding direction. In such a photographic film cartridge, it is an important issue to reduce the feeding resistance at the time of discharging the photographic film. For this reason, the applicant has already proposed a method of inclining a pile yarn of a light shielding member provided at a port opening outward (Japanese Patent Application No. Hei 3-18301).
issue).

[0003]

However, in the above method, it is technically difficult to stably manufacture the light shielding member so that the inclination angle of the pile yarn becomes an arbitrary constant value. That is, since the inclination angle of the pile yarn tends to fluctuate, the thickness of the light shielding member fluctuates. If the thickness is thin, light leakage may occur. If the thickness is large, the feeding resistance may increase. Further, when cutting such a light shielding material, the tip of the pile yarn is cut, so that a large amount of waste of the pile yarn is generated. Further, there is a problem that the light shielding member must be attached such that the angle of the pile yarn is directed to the outside of the port opening, and there is a problem that production efficiency is reduced. In addition, since the tips of the upper and lower pile yarns are pressed against each other and shielded from light, the upper and lower pile yarns are entangled by transportation vibration, user handling, long-term storage, etc., and the feeding torque increases. There is a disadvantage that it is difficult to locate the beginning of the photographic film.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the upper and lower pile yarns do not become entangled by vibration due to transportation, handling by a user, and storage for a long time. An object of the present invention is to provide a photographic film cartridge capable of stably sending out the leading end of the photographic film with a low torque without causing light leakage, generation of pile yarn waste, and reduction in production efficiency.

[0005]

The photographic film cartridge of the present invention reaches a port formed in the cartridge body.
Pile fabrics on the upper and lower inner walls of the photo film passage
With the light shielding member of the width,
Remove the leading edge of the photo film from the port
In the above photo film cartridge, the light shielding member is
A long woven fabric that is woven in advance to the width to be attached to the port port
The pile yarn is inclined with respect to the ground cloth using pile fabric,
And the pile yarns of the upper and lower light shielding members are
At least one of the upper and lower light blocking members
End of the pile yarn is inclined with respect to the width direction of the fabric
And cut it to the length to be attached to the port opening.
And make sure that each end of the pile yarn faces the outside of the port
At the port opening. Also, the patrone book
Inside and below the photo film passage leading to the port opening formed in the body
When a narrow light shielding member made of pile fabric is placed on the wall
In both cases, the tip of the photo film is
Photo film patrone designed to be discharged from the port
Wherein the light shielding member is attached to the port opening
Use a long pile fabric that has been woven twice or more in advance.
The pile yarn is inclined with respect to the ground cloth
Of piled yarn facing diagonally to width direction of fabric
To the width and length attached to the port opening
After cutting, the tips of the pile yarns of the upper and lower light shielding members are
It is located at the port opening so that it faces the outside of the port opening.
You.

[0006]

FIG. 2 shows a photographic film cartridge 10 according to the present invention. The cartridge body 11 is composed of two upper and lower cases 11a and 11b, which are light-tightly fixed by ultrasonic welding or the like. A photo film 12 such as Fuji Photo Film Co., Ltd. is installed in the patrone body 11.
Fuji Color Super HG400 (trade name) is wound around a spool 13 and stored.

The patrone body 11 is made of a resin such as a light-shielding plastic, for example, 0.5% carbon black.
Molded with high impact polystyrene (HIPS) resin, the inner wall of which reduces friction with the photographic film 12 and prevents the photographic film 12 from becoming loose.
Book ribs 14a and 14b are formed. Reference numeral 15 denotes a separation claw for separating the leading end 12a of the photographic film 12 from the roll-shaped lower photographic film.
2a is cut into a protruding shape corresponding to the separation claw 15, as shown in FIG. Angles α and β formed by the ridge line of tip 12a with the width direction of photo film 12 as the base line
Were 45 degrees and 30 degrees, respectively.

The patrone main body 11 has a port opening 16 for sending out the photographic film 12 inside dimensions D: 2.
It is formed in 3 mm. Light shielding members 20 are provided on the upper and lower inner walls 17a and 17b of the photographic film passage 17 toward the port opening 16 so as to prevent light from leaking into the cartridge body 11.
21 are respectively stuck using a semi-adhesive hot melt adhesive.

In Example 1, velvet fabrics woven as shown in the organization diagram of FIG. 3 were used as the light shielding members 20 and 21. In addition, the warp and weft constituting the ground cloth are each marked.
The pile yarns are represented by symbols P and W. The pile yarns are represented by the symbol P. The hatched portions indicate portions where the warp is projected on the weft, and the crosses indicate the portions where the pile yarn is hooked on the weft in a V-shape. Is shown. The warp is an antistatic nylon yarn obtained by twisting two 50 denier / 10 filaments, and the weft is 75 denier / 24.
The filament antistatic nylon yarn and pile yarn are woven with 100 denier / 48 filament nylon yarn at a needle loom with a woven fabric width of, for example, 50 mm and a pile yarn portion with a woven width of, for example, 4.5 mm. Material 22
Was cut with a shearing machine so that the height of the pile yarn became 2.0 mm, for example.

After the light-shielding material 22 was dyed black with an acid dye, the pile yarns were inclined in an oblique direction using an apparatus as shown in FIG. This apparatus rotates a 10 cm diameter pig hair brushing roller 23 rotated at 100 rpm at a speed of 8 m / m.
mounting the light-shielding material 22 conveyed in at an angle of attachment γ with respect to the conveyance direction, for example, at 25 degrees (see FIG. 5);
In this way, the pile yarns are inclined in an oblique direction by brushing the light shielding material 22. Further, downstream of the brushing roller 23, a 150 ° C. heat drum for fixing the inclination of the pile yarns by pressing and heating the light shielding material 22 is applied. 24 are provided. As a result of passing through this device, the inclination angle θ of the pile yarn with respect to the direction perpendicular to the conveyance direction of the light shielding material 22 is 30.
It was time. As shown in FIG. 6, since the pile yarn spreads from the root to the end, the inclination angle θ of the pile yarn is defined by the center of the spread of the pile yarn.

The light shielding material 22 woven in this manner is cut to the length of the port opening 16 in the width direction of the photographic film to form light shielding members 20 and 21, as shown in FIG.
The tip of the pile yarn faces the outside of the port opening 16 and the pile yarn 25 of the light shielding member 20 and the pile yarn 2 of the light shielding member 21
6 were adhered to the upper and lower inner walls 17a and 17b so that they intersected each other in a plane parallel to the ground cloth . In addition, "Parallel
"In the plane" is substantially halfway between the light shielding member 20 and the light shielding member 21.
And a plane parallel to the ground cloth of the light shielding members 20 and 21.
And the leading end 12a of the photo film 12 tries to pass through.
This indicates that the plane is Also, "intersect each other"
Is that the pile yarn 25 and the pile yarn 26 are not entangled with each other.
In the opposite direction.
doing. As a result, as shown in FIG.
The inclination angle θ ₁ of the pile yarn 26 and the inclination angle θ ₂ of the pile yarn 26 are each 30 degrees, and the intersection angle θ ₃ is 60 degrees. The thickness of the light shielding members 20 and 21 is 5 g / cm load.
It was 1.7 mm as measured by a Peacock thickness meter in ² , and the crush amount X value of the pile yarn on one side at this time was 0.55 mm. In addition, the width of the light-shielding material 22 to be attached to the port
After weaving twice or more , by cutting to a width to be attached to the port opening, weaving productivity can be increased. That is,
Light-shielding material 22 is "woven twice or more" and piled before cutting.
The yarn is inclined with respect to the ground cloth, and the inclined pile yarn is
Process so that the tip is oblique to the width direction of the fabric
The width and length to be attached to the port opening.
And cross, if placed in the port opening to the direction memorial outside the pile yarn each tip port openings of the upper and lower light blocking member, the upper and lower light blocking
The pile yarns of the members cross each other in a plane parallel to the ground cloth .
In this case, if the pile yarn is inclined after the cutting, the same effect as the pile fabric of claim 1 can be obtained.

The photographic film cartridge of the second embodiment is the same as that of the first embodiment except that the mounting angle γ of the brushing roller 23 is set to 50 degrees with respect to the transport direction as shown in FIG. As a result, as shown in FIG. 9, the inclination angles θ ₁ and θ ₂ of the pile yarns 25 and 26 were each 60 degrees, and the intersection angle θ ₃ was 120 degrees.

The photographic film cartridges of Examples 3 and 4 combine the setting angle of the brushing roller 23, the number of rotations, and the conveying speed of the light-shielding material 22 as shown in Table 1 below. As shown in FIG.
And the inclination angle θ ₁ of each is set to 60 degrees and 15 degrees, respectively.
The inclination angle θ ₂ of the pile yarn 26 is set to 0 degree.

In Comparative Examples 1 and 2, as shown in FIGS. 11A and 11B, a combination in which upper and lower pile yarns 25 and 26 hardly intersect was prepared under the conditions shown in Table 1. This was created in the same manner as in Example 1. Comparative Example 3 is shown in FIG.
As shown in (C), the inclination angle θ ₁ of the pile yarn 25 is 9
In this case, the inclination angle θ ₂ of the pile yarn 26 is set to 0 degree. As a method for inclining the pile yarn, in addition to the present embodiment, a guide is provided immediately before the heat drum, and the pile surface is twisted by 90 degrees from one end of the light shielding material so as to always contact the heat drum surface. There is a method of pressing. In this case, the brushing roller 23 becomes unnecessary. In this method, the width direction is inclined by pressing from one side, and the length direction is inclined by a slight shift in the transport speed between the heat drum and the light shielding material. As a result, an oblique inclination is provided.

[0015]

[Table 1]

For these photographic film cartridges, the torque applied to the spool 13 when the photographic film was caught was measured by a feeding torque meter. The measured value is the tip 12
The peak value until the entire width of “a” protruded from the port opening 16 was set. The cueing rate is a value obtained by dividing 50 by the number of photo film crawling completed by feeding 50 photo film patrone and displaying the result in%. The result is shown in Table 2 below.
Shown in The value after the vibration test is 10
This is a value measured after applying a Hertzian vibration for 8 hours.

[0017]

[Table 2]

As is clear from these results, in all of Examples 1 to 4 of the present invention, the feeding torque is small, the photographic film crawling rate is 100%, and the leading end portion 12a is reliably fed out of the cartridge body 11. And no change in the feeding torque after the vibration test was observed. On the other hand, in Comparative Examples 1 to 3, the feeding torque was low immediately after the preparation, but when the vibration test was performed, an increase in the feeding torque was observed, and with this, occurrence of a cueing failure was also observed. From the above, 0 degrees ≤
It is preferable that a combination of θ ₁ ≦ 60 degrees, 15 degrees ≦ θ ₂ ≦ 60 degrees, or 15 degrees ≦ θ ₁ ≦ 60 degrees and 0 degree ≦ θ ₂ ≦ 60 degrees. In addition, the inclination angle θ ₁ or the inclination angle θ ₂
If either of them exceeds 60 degrees, the resistance when the photographic film 12 passes increases, so that the feeding torque increases.

[0019]

As described above, according to the photographic film patrone of the present invention, the pile is formed by using a long pile woven fabric which is previously woven to a width to be attached to the port opening formed in the patrone main body as a light shielding member. Thread against ground cloth
The pile threads of the upper and lower light blocking members are parallel to the ground cloth.
Of the upper and lower light blocking members so that they intersect each other in the plane.
The tip of at least one pile yarn is inclined with respect to the width direction of the fabric.
And then attach it to the port
Cut to length, each end of pile yarn outside the port opening
Having disposed port opening to face, vibration and user handling of transport, without intertwined tip of thread above and below the pile by prolonged storage, etc., stably feed the photograph film tip at a lower torque be able to. Ma
Pile woven to the width to be attached to the port mouth in advance
Since the fabric is used, after the pile yarn is inclined,
Extremely high pile lint generation compared to width cutting
And contribute to the improvement of production efficiency. Ma
In addition, weave in advance at least twice the width attached to the port mouth
Using a long pile fabric, the pile yarns
And the tip of the inclined pile yarn is
After processing so that it faces diagonally to the width direction,
After cutting to the width and length to be attached to the
So that each end of the pile yarn of the material faces the outside of the port
The upper and lower pile yarns naturally
Because they intersect each other in the same plane,
Up and down piles due to user handling, long-term storage, etc.
The leading end of the photo film can be
Photo file that can be sent out stably with low torque
Mpatrone can be produced efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a relationship between a light shielding member and a photo film according to an embodiment of the present invention.

FIG. 2 is a sectional view showing the internal structure of the photo film cartridge.

FIG. 3 is an organization diagram showing a woven structure of a light shielding member.

FIG. 4 is a schematic view showing an apparatus for imparting an inclination to a pile yarn of an elongated light shielding material.

FIG. 5 is a plan view illustrating a relationship between a brushing roller and a light shielding material in the first embodiment.

FIG. 6 is an explanatory diagram showing a method of defining a tilt angle θ of a pile yarn in a light shielding material.

FIG. 7 is an explanatory diagram showing a relationship between a pile yarn of an upper light shielding member and a pile yarn of a lower light shielding member in the first embodiment.

FIG. 8 is a plan view illustrating a relationship between a brushing roller and a light-shielding material according to a second embodiment.

FIG. 9 is an explanatory diagram showing a relationship between a pile yarn of an upper light shielding member and a pile yarn of a lower light shielding member in Embodiment 2.

FIG. 10A is an explanatory diagram showing a relationship between a pile yarn of an upper light shielding member and a pile yarn of a lower light shielding member in the third embodiment. (B) is an explanatory view showing the relationship between the pile yarn of the upper light shielding member and the pile yarn of the lower light shielding member in Example 4.

11A is an explanatory diagram illustrating a relationship between a pile yarn of an upper light shielding member and a pile yarn of a lower light shielding member in Comparative Example 1. FIG. (B) is an explanatory view showing the relationship between the pile yarn of the upper light shielding member and the pile yarn of the lower light shielding member in Comparative Example 2. (C) is an explanatory view showing the relationship between the pile yarn of the upper light shielding member and the pile yarn of the lower light shielding member in Comparative Example 3.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 photo film patrone 11 patrone main body 12 photo film 12 a tip end of photo film 16 port opening 17 photo film passage 17 a upper inner wall 17 b lower inner wall 20, 21 light shielding member 22 light shielding material 23 brushing roller 25, 26 pile yarn

Claims (2)

(57) [Claims] 1. A pile fabric is formed on upper and lower inner wall surfaces of a photographic film passage leading to a port opening formed in a patrone body.
With placing a light shielding member of narrow, in a photographic film cassette which is adapted to discharge from the port opening of the distal end portion of the photographic film by the spool rotates, the light blocking member, is previously weaving width attached to the port opening length The pile yarns of the upper and lower light shielding members are tilted with respect to the base cloth using a pile pile fabric, and the pile yarns of the upper and lower light shielding members intersect each other in a plane parallel to the base cloth .
At least one of the pile yarns ends in the width direction of the fabric
After being processed so as to be oblique to the port opening , the pile yarn is cut into a length to be attached to the port opening, and is arranged at the port opening so that each end of the pile yarn faces the outside of the port opening. Photo film patrone. 2. A pile fabric is formed on upper and lower inner wall surfaces of a photographic film passage leading to a port opening formed in a patrone main body.
In a photographic film cartridge in which a narrow light-shielding member is arranged and a leading end of the photographic film is discharged from a port by rotating a spool, the light-shielding member is woven in advance so as to be at least twice as wide as the width attached to the port. use a long pile fabric you have, Pa
The ile thread is inclined with respect to the ground cloth, and the inclined pile
Processed so that the end of the yarn is oblique to the width direction of the fabric
And then cut it to the width and length to be attached to the port
Further, a photographic film patrone wherein the upper and lower light shielding members are arranged at the port opening such that the tips of the pile yarns face the outside of the port opening.