JP2915718B2 - 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 photographic film is fed by rotating a spool in a film feeding direction.

[0002]

2. Description of the Related Art The 135 type photographic film patrone, which is most widely used, has a patrone body made of a thin metal plate and a patrone body.
A patrone body is composed of two caps, and a spool around which one end of the photographic film is fixed and wound is stored. As a method of assembling the photo film patrone, there is a method in which a photographic film is wound around a spool and prepared and wrapped in a patrone main body by working in a dark room as known from Japanese Patent Publication No. 2-691.

[0003] Further, in Japanese Unexamined Patent Publication No. 49-107732 and Japanese Unexamined Patent Publication No. 52-77723, a cartridge body incorporating an empty spool is made in a light room, and formed in the cartridge body. Insert a tongue-shaped guide plate into the film passage. Using this as a guide, insert the photo film into the cartridge body from the rear end side, lock the rear end of the photo film on the spool, rotate the spool, and wind the photo film into the cartridge body. ing.

On the other hand, as disclosed in US Pat. Nos. 4,834,306 and 4,846,418, and Japanese Patent Application Laid-Open No. 3-37645 by the present applicant,
2. Description of the Related Art A photographic film patrone having a function of assembling a patrone body with a resin molded product and sending the photographic film out of the patrone body by rotating a spool is known. This photo film patrone is different from the previous ones.In both the unused state and the used state, the leader of the photographic film does not protrude from the patrone body, and not only can the photographic film be stored more light-tight,
There is an advantage that handling before and after use is simplified.

A method of winding a photographic film around such a photographic film cartridge is disclosed in Japanese Patent Application No. Hei.
No. 212135 is proposed. According to this method, an insertion member which can freely enter and exit the patrone main body through a film passage of the pre-assembled patrone main body is used, and the rear end of the photographic film is held at the front end of the insertion member. Then, the photographic film is passed through the photographic film together with the insertion member into the film passage of the patrone main body, and the rear end is locked by the rear end locking means formed on the spool. Thereafter, the insertion member is pulled out of the patrone body, the spool is driven in the direction in which the photographic film is wound, and the photographic film is wound into the patrone body while being wound around the spool.

Similarly, in the method of separating a photographic film from the patrone main body proposed in the above specification, first, the photographic film is pulled out from the patrone main body until the winding amount around the spool becomes less than one turn. After that, the separation member is inserted into the cartridge body from the film passage provided in the cartridge body to release the lock between the spool and the rear end of the camera film, and then the camera film is separated from the cartridge body by pulling out the camera film. I am trying to do it.

[0007]

However, there is a disadvantage that the force required to insert the insertion member and the separation member into the spool in the above-described method is too large, and the insertion member and the separation member are deformed. In addition, when the insertion member and the separation member are passed through the narrow film passage due to the small radius of curvature of the insertion member and the separation member, the film passage is rubbed to damage or wear the patrone body, and the hair of the telemump is turned upside down. In some cases, this could hinder film delivery.

The present invention has been made in consideration of the above-mentioned problems of the prior art. By increasing the radius of curvature of the insertion member and the separation member, the insertion resistance to the spool is reduced and the clearance between the spool and the film passage is minimized. An object of the present invention is to provide a photo film patrone which can be made large.

[0009]

In order to achieve the above-mentioned object, the center line of the slit having the film locking portion of the spool and the holding rib is deviated from the rotation center of the spool.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing an example of a photographic film patrone embodying the present invention, a patrone main body 10 is composed of an upper case 7 and a lower case 8 which are integrally formed of resin and a spool 12. A pair of ribs 15 are formed on the inner walls of the upper and lower cases 7 and 8, and a spool 12 around which a photo film is wound in a roll shape is used.
The rib 15 contacts the outermost periphery of the photographic film to prevent loosening from the spool 12. Therefore, when the spool 12 is rotated in the film feeding direction (clockwise in the drawing), the film roll also rotates integrally with the spool 12 in the same direction. Reference numeral 17 denotes a leading edge separating claw. When the film roll is rotated together with the spool 12, the leading edge separating claw 17 scoops up the leading end of the photographic film.

The upper and lower cases 7, 8 have port portions 7a, 8a.
When the upper and lower cases 7, 8 are combined and integrally connected, a film passage 19 is formed at the joint of the port portions 7a, 8a. A cover member 14 is incorporated between the port portions 7a and 8a. Rotation support portions 14 a are provided at both ends of the lid member 14, and the lid member 14 is rotatable about an axis parallel to the rotation axis of the spool 12. A key 16 is further provided at one end of the rotation support portion 14a, and is exposed on a side surface of the cartridge body 10. The cover member 14 can be rotated between the position where the film passage 19 is opened and the position where the film passage 19 is closed by fitting the cover opening member 18 to the key 16 from outside and rotating it.

The spool 12 is provided integrally with a pair of flanges 12a.
It is wound around the shaft portion 12b between a. Both ends of the spool 12 are exposed on the side surface of the cartridge body 10, and a key 13 is provided in the exposed portion. As is well known, the key 13 is used to engage a member for driving the spool when the spool 12 is rotated. As shown, a notch 13 a is provided at one end of the key 13.
The spool 12 is for winding a photographic film having a large number of shots (for example, 36 to 40 shots), that is, a photographic film having a long film length. The diameter of the shaft portion 12b is, for example, about 5 mm to 10 mm.

The shaft 12b of the spool 12 has a slit 2
0 is formed. As shown in FIG. 2, a pair of locking claws 21 and pressing ribs 22 are provided inside the slit 20, and the pressing ribs 22 project downward between the locking claws 21. In FIG. 2, the left side of the slit 20 is the insertion port side, and the rear end of the photo film is inserted through the insertion port. Through the center of the gap 20 in the height direction
The slit 20 is provided so that the center line of the spool is located off the center of rotation of the spool 12. Slit 20
The distance between the rotation center of the center line and the spool 12 When A _1, its value is 0.3mm~4mm example. The thickness t of the upper portion of the spool 12 provided with the holding rib 22 is 0.3 mm to 1.5 mm (preferably 0.8 mm to 1.5 mm).
1.2 mm) and can be easily deformed.

As shown in FIG. 3, a pair of locking holes 25 are formed at the rear end of the photographic film 24, and the locking claws 21 are engaged with the locking holes 25. And holding rib 2
2 is to hold the rear end of the photo film 24 so as not to rise, so that the locking between the locking claw 21 and the locking hole 25 is maintained, and the photo film 24 can be pulled out even if a force is applied in the direction of pulling out the photo film 24 from the slit 20. There is no. At the rear end of the photo film 24, a pair of holes 26 are further formed outside the locking holes 25, and these holes 26 are used when the photo film 24 is inserted into the slit 20.

FIG. 4 schematically shows a device for locking the rear end of the photo film 24 to the cartridge body 10 constructed as described above. This device is provided with a spool 1 on a patrone main body 10 comprising upper and lower cases 7 and 8.
2. Used when the photo film 24 is wound around the spool 12 after the lid member 14 is assembled. A receiving portion 31 corresponding to the outer shape of the patrone main body 10 is formed in the base block 30 to receive the patrone main body 10. A holding arm 32 driven via, for example, a hydraulic cylinder device or a link mechanism (both not shown) is mounted on the base block 30. When the cartridge body 10 is supplied to the receiving portion 31, the cartridge body 10 is moved. Hold down.

The patrone body 1 is held by the holding arm 32.
When 0 is pressed, the cartridge body 10 is held in a fixed posture by the shape of the receiving portion 31 and the port receiving portion 33, and the entrance of the film passage 19 is also fixed at a fixed position. A pair of arms 35 is provided on both sides of the base block 30.
Is mounted on a shaft 35a, and is rotated by driving of a stepping motor (not shown). The arm 35 is connected by a mounting plate 37, which is an insertion member.
Nail plate 39 is fixed that. The claw plate 39 is formed of a flexible metal thin plate that is curved in an arc shape and has a claw 39a at the tip of a pair of arms protruding in an arm shape. The center line of the slit 20 of the spool 12 and the shaft 12
Since the intersection of the locking claw 21 and the pressing rib 22 provided on the b is deviated from the rotation center of the spool 12, increasing the radius of the curved surface of the nail plate 39 (e.g. R18mm～R30mm)
it can.

A slide frame 40 is mounted on one side of the base block 30 so as to be movable between a position close to the side of the cartridge body 10 and a position away from the side. The slide frame 40 includes a fork member that engages with the key 13 of the spool 12 and a motor that drives the fork member, and a drive unit 41 that includes a lid opening member 18 that engages with the key 16 of the lid member 14 and a motor that drives the fork member.
Holding. The slide frame 40 is in the retracted position until the patrone main body 10 is set in the receiving portion 31, and moves to the drive position after setting the patrone main body 10 in a predetermined position. As a result, the spool driving fork 41a and the lid opening member 18 incorporated in the driving unit 41 are connected to the key 13 and the lid member 14 of the spool 12, which are exposed on the side of the cartridge body 10, respectively.
Key 16.

On the other side of the base block 30, a photo sensor (not shown) is incorporated. This photosensor detects the position of the notch 13a provided in the key 13 of the spool 12, and performs an operation of identifying whether or not the spool 12 is at a fixed rotation position. For this reason,
Exactly the same key 13 and notch 13a are provided on the other end side surface of the spool 12.

A film guide 45 is provided so as to face the base block 30. The film guide 45 is connected to a supply device for the photographic film 24, and after the photographic film 24 has been wrapped around the patrone main body 10, the rear end of the photographic film 24 is again stopped at a predetermined position. Therefore, when the rear end of the photographic film 24 is projected from the film guide 45, the hole 26 and the claw 39 are provided.
The position relative to “a” is always constant.

FIG. 5 shows a receiving portion 31 of the patrone main body 10.
And the positional relationship between the patrone main body 10 and the arm 35 when positioned in a fixed posture by the port portion receiver 33. A point A in the figure indicates an intersection between the center line of the slit 20 and the shaft portion 12b when viewed from the direction of the rotation axis of the spool 12, and points B and C indicate the upper and lower surfaces of the film passage 19 at the back and outside, respectively. The center position is shown. Nail plate 39
The trajectory of the claw 39a is substantially equal to the arc formed by connecting the points A, B, and C, and the claw 39a and the claw plate 39 pass through the center of the film passage 19.

Therefore, when the arm 35 is rotated counterclockwise from the standby position shown in FIG. 5, the claw 39a passes through the film passage 19 and enters the slit 20 formed in the shaft portion 12b of the spool 12. Become. At this time, the thickness of the upper portion of the shaft portion 12b of the spool 12 is 0.8 mm to
Since it is easily deformed at about 1.2 mm, the insertion resistance of the claw plate 39 is as low as 300 gf to 700 gf (conventionally, 80 gf).
0 gf to 1000 gf) The nail 39a is less likely to be deformed. The notch 13a described above is used for setting the spool 12 to the rotational position shown in FIG.

The photographic film 2 in which the present invention is carried out by the above-described apparatus is attached to the patrone body 10 of the photographic film patrone.
4 will be described. As shown in FIG. 1, the cartridge body 10 is assembled in a light room with an empty spool 12 incorporated. Since the assembly is performed in a light room, it is also possible to securely incorporate another member such as the cover member 14 and the like, a display member before and after use, a spool rotation regulating member, and the like.
It can be done easily. Further, the upper and lower cases 7, 8 are firmly connected by ultrasonic welding or claw fitting, and the patrone body 10 itself is sent to the next step as a finished product.

The assembled patrone main body 10 is sent to a dark room, and is set from above into a winding device for the photographic film 24 shown in FIG. When the patrone body 10 is set, the holding arm 32 is in the open position, and the slide frame 40 is in the retracted position. When the cartridge body 10 is set in the receiving portion 31, the holding arm 32
Moves to the holding position, and the patrone main body 10 is
It is held in a fixed posture by the port 1 and the port receiver 33. Thereafter, the slide frame 40 moves to the driving position, the fork is connected to the key 13, and the lid opening / closing member 18 is moved to the key 1 position.
6 is engaged.

When the engagement between the fork and the key 13 and the engagement between the lid opening / closing member 18 and the key 16 are confirmed, the drive unit 41 operates to move the spool 12 in the direction in which the photo film 24 is wound (counterclockwise in FIG. 4). Direction). When the spool 12 is driven in this manner, the photo sensor monitors the position of the notch 13a provided in the key 13, and sends a stop signal to the drive unit 41 when the notch 13a reaches a certain position. As a result, as shown in FIG.
The spool 12 stops when the intersection A is located above the rotation center of the spool 12 with the entrance side of the slit 20 formed in b facing the film passage 19 side. It is also possible to adjust the rotational position of the spool 12 to the above-mentioned position while the cartridge body 10 is being conveyed to the receiving section 31. In this case, the base block 30
Therefore, the photo sensor can be omitted.

Next, the lid opening / closing member 1 is driven by the drive unit 41.
8 is driven, the cover member 14 is rotated, and the film passage 19 is rotated.
To release. Thereafter, the arm 35 is rotated by a certain angle by driving the stepping motor. The claw plate 39 is rotated by the rotation of the arm 35, and the claw 39a is engaged with the hole 26 at the rear end of the photo film 24. When the arm 35 further rotates, the claw 39a moves while capturing the rear end of the photo film 24, and the photo film 24 is pulled out from the film guide 45.

With the rotation of the arm 35, the claw 39a holds the rear end of the photographic film 24 while holding the rear end of the photographic film 24.
5 passes through the vicinity of the points C and B shown in FIG. Further, the arm 35 is rotated counterclockwise, and the claw 39a enters the slit 20 provided on the shaft portion 12b of the spool 12. Since the claw 39a moves while capturing the rear end of the photo film 24, the claw 3a is moved.
When the film 9a enters the slit 20, the rear end of the photo film 24 is passed between the locking claw 21 and the holding rib 22 provided at the back of the slit 20 as shown in FIG. The pawl 21 fits into the locking hole 25.

At this time, even if the claw plate 39 may slide on the inner wall of the slit 20, the claw plate 39 itself has flexibility and the upper portion of the shaft portion 12b can be easily deformed. The claw 39a moves to a position almost passing through the slit 20 without being caught in the middle. In FIG. 3, since the upper half is broken, illustration of the holding rib 22 is omitted.

When the rear end of the photo film 24 is locked by the shaft 12b of the spool 12, the arm 35 rotates to the standby position shown in FIG. 5, whereby the pawl 39a is moved out of the cartridge body 10. Pulled out. The locking claw 21 is shaped to prevent the photographic film 24 from moving in the pulling-out direction, so that once the locking hole 25 is engaged with the locking claw 21, the claw plate 39 is moved from the slit 20. It does not come off from the locking claw 21 when it is pulled out. Also, nail 3
When the arm 9 is pulled out of the slit 20, it is possible to rotate the spool 12 counterclockwise to separate the claw plate 39 from the slit 20 before rotating the arm 35 in the returning direction. It may be rotated to the original standby position.

After the arm 35 is returned to the standby position, the fork is driven by the drive unit 41 and the spool 1
2 is driven counterclockwise. As a result, the spool 12
The photo film 24 is wound around the shaft portion 12b from the rear end side. During this time, the photo film 24 is in the spool 1
The photographic film 24 is pulled out from the film guide 45 by the tension caused by the rotation of 2, and the photographic film 24 is wound into the cartridge body 10. When the photo film 24 passes through the photo film guide 45 to a predetermined length, the rotation of the spool 12 is stopped, and the cutter in the supply device of the photo film 24 operates to cut the photo film 24. By this cutting, the front end shape of the photographic film 24 which is currently being wound is shaped, and the locking holes 25 and holes 26 are pierced at the rear end.

When the cutting of the photographic film 24 is completed, the spool 12 is driven again, and the photographic film 24 is continuously wound around the cartridge body 10. When the leading end of the photo film 24 is caught in the cartridge body 10, the drive of the spool 12 is stopped. Thereafter, the lid opening / closing member 18 is driven counterclockwise to move the lid member 14 to a position where the film passage 19 is blocked. Thus, the inside of the cartridge body 10 is completely shielded from light. Subsequently, the holding arm 32 moves to the release position, the cartridge body 10 in which the photographic film 24 is entangled is taken out of the receiving portion 31, and a new cartridge body 10 is supplied to the receiving portion 31. Thereafter, the same operation is repeated.

FIG. 6 shows a case where the photographic film 24 is separated from the patrone main body 10 contrary to the above-described embodiment. This device is used in a dark room or a bright room, and its basic structure is the same as that shown in FIG. First, the photographic film 24 is fully pulled out of the patrone main body 10, and then the arm 35 is rotated in a counterclockwise direction .
The leading end of the film separating plate 50 as a separating member enters the film passage 19 of the cartridge body 10 along the lower surface side of the photo film 24. When tension is applied to the photo film 24, the spool 12
Is directed toward the film passage 19, the leading end of the film separation plate 50 passes through the slit 20 and enters the interior. It is also effective to detect the notch 13a with a photo sensor in order to confirm whether the entrance side of the slit 20 is correctly directed to the film passage 19.

When the film separating plate 50 enters the slit 20, the pressing rib 22 formed on the upper surface of the slit 20 is pressed to bend the upper portion of the shaft portion 12b. Further, since the film separation plate 50 enters between the locking claw 21 and the photo film 24, the locking hole 25 is removed from the locking claw 21 and the locking between the rear end of the photo film 24 and the spool 12 is released. . When the film separation plate 50 is inserted, the emulsion surface of the photographic film 24 functions as an insertion guide, but there is no problem with friction with the film separation plate 50 since no photographing is performed on the rear end emulsion surface.

At this position, the rotation of the arm 35 is temporarily stopped, and then the photographic film 24 is pulled out of the cartridge body 10. Since the rear end of the photo film 24 is detached from the spool 12, the photo film 24 is entirely pulled out of the cartridge body 10. Thereafter, the arm 35 rotates in the reverse direction and returns to the standby state shown in FIG. Thereafter, the same operation is repeated.

In the case of a photographic film cartridge containing a pair of flanges provided with lips as disclosed in US Pat. No. 4,834,306, the width of the claw plate 39 and the width of the film separation plate 50 are equal to those of the pair of flanges. Preferably, it is smaller than the lip spacing so as not to contact the flange.

FIG. 7 shows another embodiment of a photographic film cartridge embodying the present invention. In the above-described embodiment, the photo film patrone for storing the photo film 24 having a large number of shots has been described. However, the photo film patrone shown in FIG. 7 is a photo film having a small number of shots (for example, taking 10 to 28 shots), that is, the film length. For winding short photo films. Therefore, the diameter of the shaft portion 60a of the spool 60 rotatably housed in the cartridge body 10 is larger than that of the above-described embodiment by φ11.
mm to φ13 mm.

A ₂ shown in the figure is the distance between the center of rotation of the spool 60 and the intersection of the center line of the slit 63 and the shaft portion 60a.
It is preferable that the value is equal to or smaller than the value of ( ₁ ).
The angle θ formed by the line 64 parallel to the direction of the slit 63 and passing through the center of the spool 60 with the horizontal line 65 is desirably equal to or greater than the similar amount of the spool 12 in the above-described embodiment. Further, it is desirable that the angle Ψ formed by the inclined line 66 and the horizontal line 65 of the surface of the locking claw 61 facing the film insertion side be equal to the same amount of the spool 12 of the above-described embodiment.

The photographic film cartridge configured as described above, which accommodates the photographic film spool 60 with a small number of photographed images, can be wound with the same device as in the above-described embodiment, and the same effect can be obtained. In addition,
In the above embodiment, the photographic film cartridge having the light shielding cover member 14 has been described.
It is also effective for a photographic film patrone in which light is shielded by pasting a light on the surface.

[0038]

As described above, according to the photographic film cartridge of the present invention, the center line of the slit having the film locking portion and the holding rib of the spool is deviated from the center of rotation of the spool. In addition, the insertion resistance of the separation member can be reduced, and the insertion member and the separation member can be prevented from being deformed. Further, since the radius of curvature of the insertion member and the separation member can be increased, the resistance at the time of inserting the spool is increased, and the photographic film cartridge is prevented from being damaged or worn by rubbing against the film passage. Further, it is possible to reduce the upside-down when passing through the telemping, and there is no problem in feeding the film.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a photographic film cartridge embodying the present invention.

FIG. 2 is a cross-sectional view of a main part of the photographic film cartridge shown in FIG.

FIG. 3 is an engagement portion of the photographic film cartridge shown in FIG. 1 with a rear end of the film.

FIG. 4 is an explanatory view of a device for winding a film around the photographic film cartridge shown in FIG. 1;

5 is a sectional view of the photographic film cartridge shown in FIG. 1 when the film is locked.

6 is a sectional view of the photographic film cartridge shown in FIG. 1 when the film is separated.

FIG. 7 is a sectional view of another embodiment of the photographic film cartridge embodying the present invention.

DESCRIPTION OF SYMBOLS 10 patrone main body 12 spool 12b shaft 13 key 14 lid member 19 film passage 20 slit 21 locking claw 22 pressing rib 24 photograph film 26 locking hole 35 arm 39 claw plate 39a claw 50 film separating plate

Continuing on the front page (72) Inventor Koichi Takahashi 210 Nakanakanuma, Minamiashigara, Kanagawa Prefecture Inside Fujisha Shin Film Co., Ltd. (72) Inventor Haruo Ichikawa 210 Nakanakanuma, Minamiashigara City, Kanagawa Prefecture Fujisha Shin Film Co., Ltd. (56) Reference Document JP-A-4-248546 (JP, A) JP-A-4-122925 (JP, A) JP-A-4-124465 (JP, A) JP-A-2-1066738 (JP, A) 16777 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03C 3/00 540 G03C 3/00 530 G03C 3/00 555 G03C 3/00 590

Claims (2)

(57) [Claims] In the unused state, even the leading end of the photographic film is completely stored in the patrone main body, and the photographic film is sent out by rotating a spool rotatably provided in the patrone main body in the film feeding direction. as in the a photographic film cassette, a slit having a full <br/> Ilm locking portion and the pressing rib to said spool, this
Deviates from the rotation center of the height direction of the slit center line gas pools, the photographic film to the distal end of the insertion member
Hold the rear end of the photo film and attach it to the patrone.
Inserting the insertion member through the opened film passage
The rear end of the photo film inside the patrone body.
And insert the rear end of the photo film into the
After inserting the insertion member into the cartridge
And then rotate the spool to take a photo.
Wrap the true film around the spool from the rear end
A photo film patrone characterized in that the photo film is rolled into the rhone body . 2. The insertion member rotates in an arc shape.
To insert the photo film into the patrone body.
2. The photographic film patrol according to claim 1, wherein
Ne.