JP3327675B2 - Disposal method of tape for bonding photographic film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a photographic film in which the front and rear ends of two photographic films joined by a tape coated with an adhesive are positioned between a pedestal and a head. The present invention relates to a method for disposing of a tape for bonding photographic films, wherein the tape on the pedestal remaining after the photographic film is separated by pulling and separating the photographic films in a direction away from each other is reduced by applying pressure and heating by applying pressure and heating.

[0002]

2. Description of the Related Art At present, large-scale developing laboratories use a film splicer to join approximately 50 to 100 films via a splice tape in order to efficiently perform a developing process and a baking process. The processing is performed in a scaled state.

[0003] The processed film is separated into individual films by removing the tape affixed area, cut into predetermined numbers (for example, 6 frames) to form a piece negative, and then referred to as a negative sheet. The piece negatives are returned to the customer with the pieces stored in the container.

[0004] By the way, US Patent No. 4,834,306,
No. 4,846,413 and JP-A-3-37645.
Japanese Patent Application Laid-Open Publication No. H11-163873 proposes a photographic film patrone having a function of assembling a patrone body with a resin molded product and sending a photographic film out of the patrone body by rotation of a spool.

In this photographic film cartridge, unlike the conventional one, the leader portion of the photographic film does not protrude from the patrone main body in both the unused state and the used state, so that the photographic film can be housed more light-tight. This has the advantage that handling before and after use is simplified.

In the above photographic film cartridge,
To enable reuse, the rear end of the photographic film is locked on a spool in the patrone body instead of cutting the rear end, unlike a conventional 135 film. By releasing the stop, the photographic film is separated from the patrone. It is desirable that 50 to 100 separated photographic films be bonded through a splice tape and processed efficiently as in the past.

Here, in order to return the developed photographic film in a state of being rewound to the patrone when returning the photographic film to the customer, it is necessary to leave a process which can be locked on a spool formed at the rear end of the photographic film. Need to be kept.

[0008]

However, when the spliced tape-attached area of the processed photographic film is cut as in the conventional means, special processing (retaining to the spool) performed on the rear end of the photographic film is performed. Processing to do)
Is cut and cannot be locked on the spool.

[0009] It is conceivable that the rear end of the photographic film after the splice tape affixing area is cut is again subjected to a process capable of engaging with the spool, but the number of steps is increased and the working efficiency is reduced. . In addition, it is conceivable that the film length becomes shorter at the time of reprinting and re-printing, and a large amount of film dust is generated.

[0010] Therefore, it is desirable to peel off the splice tape joining the front and rear ends of the two photographic films. In this case, the spliced tape that has been peeled has a slight adhesive force, and may remain at the portion where the joint portion is positioned for peeling, which hinders the next operation.

In view of the above facts, the present invention provides a method for disposing a tape for a photographic film joint, which can quickly discard the remaining tape after the separation of the joint between two photographic films is completed. Is the purpose.

[0012]

According to a first aspect of the present invention, a portion in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head. A tape for bonding between photographic films for discarding the tape remaining on the pedestal after the head portion is brought closer to the pedestal by pressing and heating to weaken the adhesive force of the tape, pulling the photographic film in a direction away from each other and separating the photographic film from each other. Wherein air is blown out from a part of the tape mounting surface of the pedestal, and the tape is blown off in a predetermined direction by a discharge pressure of the air.

According to a second aspect of the present invention, when the air is blown out, the head section continues to pressurize and heat, and the tape is pressed down on the head section in accordance with the subsequent separation of the head section. It is characterized in that it is separated in a state where it is left, and is discarded by dropping together with release of air discharge.

According to a third aspect of the present invention, the portion where the front and rear ends of the two photographic films are joined by the tape coated with the adhesive is positioned between the pedestal and the head, and the head is placed on the pedestal. A method for discarding a tape for bonding photographic film, wherein the tape on the pedestal remaining after the photographic film is pulled apart in a direction separating from each other is discarded by pressing and heating to weaken the adhesive force of the tape by approaching the photographic film in a direction away from each other. An air suction port is provided in the head portion, and when the head portion is separated, the tape is sucked and separated from the pedestal, and the tape is discarded by dropping together with the release of the air suction.

According to a fourth aspect of the present invention, the portion where the leading ends of the two photographic films are joined by the tape coated with the adhesive is positioned between the pedestal and the head, and the head is placed on the pedestal. A method for discarding a tape for bonding photographic film, wherein the tape on the pedestal remaining after the photographic film is pulled apart in a direction separating from each other is discarded by pressing and heating to weaken the adhesive force of the tape by approaching the photographic film in a direction away from each other. A pressing pin is projected from a part of the tape mounting surface of the pedestal, and the tape is separated from the pedestal surface and dropped.
It is characterized by being discarded.

According to a fifth aspect of the present invention, the portion where the front and rear ends of the two photographic films are joined by the tape coated with the adhesive is positioned between the pedestal and the head, and the head is placed on the pedestal. A method for discarding a tape for bonding photographic film, wherein the tape on the pedestal remaining after the photographic film is pulled apart in a direction separating from each other is discarded by pressing and heating to weaken the adhesive force of the tape by approaching the photographic film in a direction away from each other. By leaving a part of the pedestal and depressing the other, the contact area with the tape is made extremely small, and the pedestal is discarded.

According to a sixth aspect of the present invention, a portion where the front and rear ends of the two photographic films are joined by a tape coated with an adhesive is positioned between the pedestal and the head, and the head is placed on the pedestal. A method for discarding a tape for bonding photographic film, wherein the tape on the pedestal remaining after the photographic film is pulled apart in a direction separating from each other is discarded by pressing and heating to weaken the adhesive force of the tape by approaching the photographic film in a direction away from each other. After the head part is separated, the peeling claw is moved so as to interfere with the tape, and the tape is peeled off from the base in accordance with the movement.

According to a seventh aspect of the present invention, a portion in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between the pedestal and the head, and the head is placed on the pedestal. A method for discarding a tape for bonding photographic film, wherein the tape on the pedestal remaining after the photographic film is pulled apart in a direction separating from each other is discarded by pressing and heating to weaken the adhesive force of the tape by approaching the photographic film in a direction away from each other. Providing an air suction port in the head portion, the head portion pressurizes, blows air from a part of the tape mounting surface of the pedestal while heating is continued, and sucks the tape when the head portion is separated. While separating the head, the tape is separated from the pedestal in a state where the tape is held down by the head,
It is characterized in that it is discarded by falling along with release of suction and discharge of air.

[0019]

According to the first aspect of the present invention, after the photographic film is separated, the tape remaining on the pedestal is removed from the pedestal by being blown off by the discharge pressure of air. Since only air is projected, work efficiency is high, and the tape can be reliably removed from the pedestal.

According to the second aspect of the present invention, when the air is blown off, it is surely removed from the pedestal, but it is difficult to blow it off in a predetermined direction. Therefore, when the head is approaching the pedestal, the discharge of air is started. Thus, when the head section separates, the tape is pressed against the head section and separated from the pedestal. Thereafter, when the ejection of the air is released, the tape falls under its own weight, so that the discard direction is ensured.

According to the third aspect of the present invention, by providing the air suction port on the head portion side, the head portion moves while sucking the tape when the head portion is separated, and the tape is separated from the pedestal. it can. Thereafter, by releasing the air suction, the tape naturally drops by its own weight and is discarded.

According to the fourth aspect of the present invention, the tape is separated from the pedestal by projecting the pressing pin from the pedestal. Thus, the tape attached to the pedestal can be separated from the pedestal with a slight adhesive force, and can be discarded by various means such as natural fall or air.

According to the fifth aspect of the present invention, except for a part of the pedestal, most other parts are recessed. Thereby, the contact area between the pedestal and the tape becomes extremely small, and the adhesive strength is drastically reduced. Therefore, the tape can be easily removed from the pedestal.

According to the sixth aspect of the present invention, the peeling claw is moved along a predetermined movement locus. During this movement, the tape interferes with the tape and actively removes the tape from the pedestal. Although the number of mechanical parts such as peeling claws increases, the tape is positively peeled off, so there is no mistake in removing the tape, and the most reliable configuration can be obtained.

According to the seventh aspect of the present invention, the second and third aspects are used in combination, that is, air is blown from the pedestal while the heating and pressurizing of the tape is continued. At the same time, air is sucked from the suction port of the head portion, and the head portion is separated in this state.

As a result, the adhesive force of the tape to the head portion (pressing by suction and blowing) increases, and the tape can be reliably separated from the pedestal. Thereafter, the tape is naturally dropped by its own weight and discarded by releasing both the air suction and the air blowing.

[0027]

FIG. 1 shows a photographic film joint separating apparatus (hereinafter, referred to as a desplicer) 10 according to the present embodiment.

This desplicer 10 is a negative film 1
2 is moved in the vertical direction, and a loading section 14 for loading the negative film 12 wound in a roll shape is disposed at the top.

As shown in FIG. 2, the front and rear ends of the negative film 12 are joined by a splice tape 16, and the above-mentioned one roll is formed by joining about 50 to 100 negative films 12. Have been.

Here, the front and rear ends of the negative film 12 applied to this embodiment are specially processed. That is, the front end of the negative film 12 has its end face cut in a slanted shape, and the rear end has a pair of circular holes 18 and an elongated hole 20 provided between the circular holes 18.

By rotating a spool (both not shown) provided in the patrone, the negative film 12 can be pulled out from the outlet through the guide member provided in the spool. I can do it. The rear end of the negative film 12 is not connected to the spool by a tape or the like, and
Are wound and housed in a state of being locked by claws or the like provided on the spool. Therefore, the negative film 12 can be easily separated from the cartridge by releasing the locked state between the claw and the circular hole 18.

Further, the jig is attached to the elongated hole 20 and the rear end of the developed negative film 12 is inserted from the outlet of the patrone. Can be wound up.

As described above, since the special processing is performed, the front and rear ends of the negative film 12 are not cut so as to be easily joined, and are joined in the original form.

As shown in FIG. 1, the outermost layer of the roll-shaped negative film 12 loaded in the loading section 14 is guided by a guide plate 24 and pulled out.

The negative film 12 pulled out from the loading section 14 includes a large-diameter roller 26 and a pair of small-diameter rollers 28, 32.
, And is wound around the large-diameter roller 26 and turned around 90 ° to form the roller group 33.
Is driven by the guide plate 34 and further passed through the roller group 29 to the separation unit 30. Note that the winding angle is not limited to 90 °, but may be 90 °.
Since the range of ° to 180 ° is a preferable wrapping angle,
It can be changed as needed.

Here, between the loading section 14 and the roller group 33, the guide plate 3 corresponding to the front and back surfaces of the negative film 12 is provided.
4, one guide plate is formed in an arc shape.

The roller group 29 is rotatable in forward and reverse directions as shown by an arrow B in FIG. Therefore, when the roller group 29 is reversed, the negative film 12 becomes
The roller is pulled back between the roller group 33 and the roller group 29. The pulled back negative film 12 is loosened in an arc along the arc of the guide plate 34 (FIG. 1).
), Bending and the like are prevented.

On the upstream side of the separating section 30, the negative film 12
A transmissive infrared sensor 101 is provided in which a light projecting unit and a light receiving unit are provided so as to sandwich the transport path. The sensor 101 is positioned at a position of a predetermined dimension from an intermediate point in the width (short side) direction of the vertical wall portion 62 of the base 52 described later. The function of the sensor 101 will be described later.

Downstream of the separation section 30, a large-diameter roller 36
And a roller group 4 composed of a pair of small-diameter rollers 38 and 40
2 are provided. These rollers 42 are driven to rotate only in one direction as shown by an arrow C in FIG. 1, and guided by a guide plate 44 to be transported by the negative film 1.
2 is wound around a large-diameter roller 36 so as to change the direction by approximately 90 °. The winding angle is not limited to 90 °, but is preferably in the range of 90 ° to 180 °.

The reversed negative film 12 is
The negative film 12 is fed into a device 46 for storing the negative film 12 in the patrone again.

That is, in this device 46, the circular hole 1
The negative film 8 is engaged with a claw of a spool and wound around the spool, so that all of the negative film 12 is accommodated in a cartridge.

The separation unit 30 is provided with a head unit 48 facing one surface (the left side surface in FIG. 1) of the negative film 12. The head portion 48 is provided with the rod 5 of the cylinder 50.
It is attached to the tip of 0A. For this reason, the head portion 48 is driven by the driving force of the cylinder 50 (intake and discharge of air and the like).
Thus, the negative film 12 can be approached and separated.

A pedestal 52 is disposed opposite to the other surface (the right side surface in FIG. 1) of the negative film 12 in the separating section 30.

The head portion 48 is heated to a predetermined temperature by a heating means (not shown), and the cylinder 50 is moved in a state where the joint between the negative films 12 is positioned at a predetermined position on the pedestal 52 (the state shown in FIG. 3). By approaching the negative film 12 in the direction of the negative film 12 and pressing and heating the splice tape 16 attached to the joint of the negative film 12, the splice tape 16 is softened and the adhesive force is weakened. .

FIG. 4 shows the details of the pedestal 52. The pedestal 52 is composed of a main body 58 formed with a pair of side walls 56 erected from both ends in the width direction of the base portion 54, and a pair of back pads 60 called back pads housed in the main body 58. ing.

The distance between the side walls 56 is the same as that of the negative film 12.
Is slightly larger than the width dimension of the negative film 12.
Pass between the side walls 56 (see FIG. 3).

The intermediate position between the side walls 56 is a vertical wall 62
The upper end surface is a tape support base surface 64, and only the splice tape 16 is located at a position facing the splice tape 16 as shown in FIG.

Here, the center of the vertical wall portion 62 (see the dashed line CL in FIG. 2) is used as a reference for the mounting position of the sensor 101, and is located upstream by a predetermined dimension L.

The light emitted from the light projecting portion of the sensor 101 transmits through the negative film 12 but does not transmit through the splice tape 16. Therefore, the edge of the splice tape 16 can be detected while the negative film 12 is being transported.

The splice tape 16 is also attached so that the center of the gap between the splice tape and the center of the gap between the films coincides. Therefore, if the width dimension (W) of the splice tape 16 is recognized, the gap between the films can be reduced. The dimension (W / 2) from the center to both ends can be easily obtained.

During the transport of the negative film 12, the downstream edge of the splice tape 16 in the transport direction is
1 and conveyed by L + (W / 2) from this detection point, the center of the splice tape 16 can be positioned on the tape support table surface 64. As a result, as described above, the tape support On the platform 64,
Only the splice tape 16 (the gap between the negative films 12) is opposed.

Further, a slit-shaped through hole 66 is formed in the vertical wall portion 62 so that air is discharged from the tape support base surface 64 by air supplied from air supply means (not shown) from the bottom side. It has become.

A back pad 60 is provided on the base portion 54 partitioned by the vertical wall portion 62. The upper end surface of the back pad 60 is a base surface 68 provided at a position flush with the tape support base surface 64, and is integrally formed with a leg 70 formed below the base surface 68.

An elongated hole 72 penetrating both sides is formed in the leg 70.
Is formed, and the shaft 74 is penetrated. On the other hand, coaxial circular holes 76 are formed in the side walls 56, and both ends of the shaft 74 are fitted. Thereby, the back pad 60 can move up and down along the long hole 72. A compression coil spring 78 is provided between the lower end of the leg 70 and the base 54 to urge the back pad 60 upward. Therefore, the back pad 60 is held in a state where the shaft 74 is at the lower end position of the elongated hole 72 in FIG. At this time, the base surface 68
Are flush with the tape support table surface 64 (FIG. 5).
(A)).

Also, as shown in FIG.
Has a plurality of grooves 6 along the transport direction of the negative film 12.
8A are formed. This groove 68A has a groove width of 1 mm
And at intervals of 1 mm. The formation of the groove 68A allows the negative film 12 by the head portion 48 to be formed.
, The contact area between the base surface 68 and the negative film 12 is reduced.

Here, as described above, when the head portion 48 approaches and the joint portion of the negative film 12 is sandwiched between the head portion 48 and the pedestal 52, the splice tape 16 Is securely sandwiched, and the back surface of the back surface against the urging force of the compression coil spring 78 by the thickness of the negative film 12 is provided on the base surface 68 where the portion where the negative film 12 and the splice tape 16 overlap is opposed. 60 is lowered, and the pressure applied to this portion is a light pressure of only the urging force of the compression coil spring 78 (see FIG. 5B). Further, the groove 6
The formation of 8A reduces the contact area.

In this state, by rotating the roller group 29 in reverse and driving the roller group 42, the two negative films 12 easily separate from the splice tape 16 regardless of the pressure of the head portion 48, and are separated. (See FIG. 6). Further, since the groove 68A is provided along the pulling direction of the negative film 12,
The negative film 12 can move more smoothly.

Although only the splice tape 16 remains on the pedestal 52 after the negative film 12 has been separated, when the head portion 48 holds only the splice tape 16 between the negative film 12 and the pedestal 52. (See FIG. 6), air is discharged from a through hole 66 provided in the tape support table surface 64, the head part 48 is separated, and a spur tape is sprayed on the head part 48 by the force of the air (FIG. 6). (See FIG. 1B.) After the air stops, it falls by its own weight, is guided by the guide plate 80, and is stored in the waste box 82 (see FIG. 1).

The operation of this embodiment will be described below. The negative film 12 wound in a roll shape is loaded in the loading section 14, and the outermost negative film 12 is guided by the guide plate 24 and pulled out.

The negative film 12 is nipped by a group of rollers 33, is driven to rotate forward, is guided by a guide plate 34, passes through a group of rollers 29, and is fed into a separation unit 30.

During this feeding, the sensor 101
The edge of the splice tape 16 is detected. That is,
The light emitted from the light projecting unit of the sensor 101 transmits through the negative film 12 but does not transmit through the splice tape 16. Therefore, when this light cannot be detected by the light receiving unit, it can be determined that the downstream edge of the splice tape 16 in the transport direction has reached the position of the sensor 101.

Here, the dimension L between the sensor 101 and the center of the tape support surface 64 (see the dashed line CL in FIG. 2) is
Since the width (W) of the splice tape 16 is also determined in advance, the edge of the splice tape 16 is detected by the sensor 101, and then L + (W / 2)
By transporting by a distance, the center of the splice tape 16, that is, the gap between the negative films 12 can be opposed to the tape support table surface 64, and this is a predetermined position.

The joint reaches the pedestal 52 of the separation unit 30,
When the cylinder 50 is positioned at a predetermined position as shown in FIG.
The head portion 48 attached to the tip of A approaches the negative film 12.

Here, the head section 48 is heated to a predetermined temperature in advance by a heating means, and the heated head section 48 and the base 52 allow the negative film 12 to be heated.
The joint between them is pinched.

By this heating and pressurizing treatment, the splice tape 16 is softened and the adhesive strength is weakened. Here, by pulling the negative film 12 in a direction away from each other, the negative film 12 and the splice tape 16 are separated from each other. However, the head portion 48 and the pedestal 52 press with a relatively strong pressing force. If the negative film 12 is pulled in this state, the negative film 12 may be deformed or damaged. There is a limit to the reduction of the pressing force, and the negative film 12 may adhere to the base surface 68 to increase the resistance.
2 had to be pulled with great force. However, in the present embodiment, the pedestal 52 is divided into a tape support base surface 64 and a base surface 68 provided so as to sandwich the tape support base surface 64, and the base surface 68 extends along the tensile direction of the negative film 12. The groove 68A was provided, and the base surface 68 was formed on the back pad 60 held by the urging force of the compression coil spring 78.

For this reason, the back pad 60 is normally held at the right end position of the long hole 72 in FIG. 5 by the urging force of the compression coil spring 78, and the base surface 68 is
It is in the same state as 4. Here, when pressurization (heating) by the head unit 48 is started, the tape support table surface 64
In this example, only the splice tape 16 is opposed, so that the pressure is reliably applied. On the other hand, the base surface 6
In FIG. 8, since the overlapping portions of the negative film 12 and the splice tape 16 are opposed to each other, the back pad 60 is moved by the thickness of the negative film 12 against the urging force of the compression coil spring 78 ( The shaft 74 is moved from the right end position as shown in FIG. 5 (B)).

As a result, a compression coil spring 78 is provided at the overlapping portion of the negative film 12 and the splice tape 16.
Only a relatively small pressure corresponding to the urging force is applied.

When the upstream roller group 29 is rotated in the reverse direction and the downstream roller group 42 is rotated in the normal direction, the negative films 12 are easily moved away from each other and separated from the splice tape 16. At this time, the base surface 6
8, the groove 68A is formed along the tensile direction of the negative film 12, so that the tensile force of the negative film 12 is further reduced.

[0069] Here, the negative film 12 to be pulled back by the rollers 29, because it is curved along the guide plate 3 4 arcuate as slackening between the rollers 29 and rollers 33, bent such inconvenience Absent.

Negative film 1 sandwiched by roller group 42
2 becomes a single unit and is sent to the device 46 in this state. In the device 46, the circular holes 18 are engaged with the claws of the spool and wound around the spool, and the entire negative film 12 is accommodated in the cartridge.

The splice tape 16 remains on the pedestal 52 after the negative film 12 has been separated, and is adhered to the tape support surface 64 with a slight adhesive force. Therefore, before the head portion 48 comes off (the state of FIG. 6A).
By discharging air from the through holes 66 provided in the tape support table surface 64, the head part 48 is detached, and the splice tape 16 is moved by the force of the air.
8 (see FIG. 6 (B)). After that, after the air stops, it falls by its own weight, and is guided by the guide plate 80 and stored in the waste box 82.

Here, if the negative film 12 is entirely stored in the patrone, the customer cannot see the image recorded on the negative film. Therefore, when returning the patrone to the customer, it is preferable that the image recorded on the negative film is returned together with an index print recorded in a matrix on one sheet.

The patrone, the printed photographic paper and the index print are stored in a DP bag and returned. However, the patrone and the index print, the printed photographic paper,
In order to verify the DP bag, the desplicer 10 and / or the device 46 may have a function to be performed by an ID provided in the cartridge. A sticker on which a barcode is recorded in advance is attached to the patrone, and a collation operation can be easily performed by providing a device for reading the sticker.

In the apparatus 46, the DP bag may be provided with an ability to store photographic material, and may be fully automatic in combination with the desplicer 10.

As described above, in the present embodiment, the pressure applied by the head portion 48 to the negative film 12 is reduced by the holding structure of the back pad 60 by the compression coil spring 78, and the groove 68 is formed in the base surface 68. By forming, the contact area between the base surface 68 and the negative film 12 was reduced, and the resistance force due to the close contact was reduced, so that the negative film 12 was deformed during the work of separating the negative film 12 after pressing and heating. There is no.

Further, since the remaining splice tape 16 is blown off by the force of the air, it is not necessary for the operator to remove the splice tape 16 each time.

Further, in this embodiment, the roller groups 29 and 33
Is the separation of the negative film 12 and the splice tape 16,
Since the transport of the negative film 12 is performed at the same time, the working efficiency is improved.

In this embodiment, 90 ° is taken as an example, but the winding angle is preferably 90 ° to 180 °. Note that even if the winding angle is smaller than 90 °, the effect is not completely ineffective, and a remarkable effect appears practically (no failure such as slippage occurs) at 90 ° or more. Further, the effect is not limited to the angle of wrapping around one roller, and the effect becomes remarkable if the sum of the wrapping angles around a plurality of rollers is 90 ° or more. [Experimental Results for Determining Control Factors When Separating Negative Film 12 and Splice Tape 16] Negative Film 1
The control factors for separating the splice tape 2 from the splice tape 16 include a death splice speed, a back pad type, a death splice temperature, and a death splice time.

The death splicing speed is a pulling speed of the negative film 12. As for the type of the back pad, the surface is preferably Teflon, and it is conceivable to use a urethane foam or a spring as in this embodiment to bias the surface.

The death splice temperature is the temperature of the head section 48. The death splice time is a time from when the head unit 48 moves and comes into contact with the splice tape 16 until the head 48 starts separating the film and the tape.

It is conceivable that the optimal conditions for the death splice are that the amount of the adhesive remaining on the splice tape 16 remaining on the film is small, and that the separation force for separating the film and the tape, that is, the death splice force is small.

The experimental values of the above control factors were set as shown in Table 1 below.

[0083]

[Table 1] FIG. 7 shows the effect of the thickness of the adhesive residue on the film of each factor based on the experimental value of each control factor. In addition,
The SN ratio on the vertical axis indicates that the higher the decibel value, the smaller the thickness of the adhesive residue on the film.

As shown in FIG. 7, it is understood that the optimal level is the level 4 for the death splice, the level 3 for the type of back pad, the level 2 for the temperature of the splice, and the level 1 for the splice time.

However, on the other hand, as shown in FIG. 8, a result different from the effect of the thickness of the adhesive residue on the film was obtained in the desplice force effect. That is,
The optimal level of the death splice speed is 1, the level of the back pad is level 3, the level of the death splice temperature is level 3, and the level of the death splice time is level 2.

Tables 2 and 3 below show the optimum levels of the control factors based on the results. Table 2
Shows the case where the desplice force is set to 40N or less (the same applies to 30N or less), and Table 3 shows the case where the desplice force is set to 50N or less.

[0087]

[Table 2]

[0088]

[Table 3] Further, by providing the groove 68A in the base surface 68 of the back pad 60, the desplice force could be reduced. Further, by optimizing each control factor as described above, it is possible to bring the adhesive remaining thickness on the film as small as possible. The re-adhesion due to the adhesive residue on the top could be eliminated. [Modified Example of Each Part] (Modified Example of Pedestal 52) Pedestal 52 shown in the above embodiment.
Is configured such that the back pad 60 is pressed by the urging force of the compression coil spring 78 so that the base surface 68 is flush with the tape support base surface 64 and is pulled in by the thickness of the negative film 12 when pressed by the head portion 48. However, this pedestal 52
With respect to the configuration described above, the following aspects can be considered. "-Modification 1" As shown in FIG. 9, a concave portion 88 is provided in a portion of the pedestal 84 where the base surface 86 is formed, and first a heat-resistant soft material 90 such as urethane foam, silicon rubber or fluorine rubber is filled. , Teflon plate or SU on the surface
A sheet material 92 coated with Teflon is attached to S. If this surface layer is made flush with the tape support base surface 94, the pedestal 84 normally maintains its flatness, and only the portion corresponding to the soft material 90 is elastically deformed when the head portion 48 is pressed, so that the negative The film 12 can be drawn in by the thickness of the film 12. "-Modification 2" As shown in FIG. 10, a concave portion 104 is provided in a portion of the base 100 where the base surface 102 is formed.
The entire surface is filled with a heat-resistant soft material 106 such as silicon rubber or fluorine rubber, and the upper surface is used as a base surface 102.
Although the same effects as those of the first modification can be obtained with a simple configuration, the first modification is better in consideration of the slipperiness of the negative film 12. "-Modification 3" Modification 3 has the same structure as that of the back pad 60 and the compression coil spring 78 shown in the first embodiment, and includes the entire pedestal 52 and the back pad 60.
Is that Teflon processing is applied to all of them. Thereby, the slipperiness is improved. (Modification of Joint Positioning Sensor) “-Modification 1” In the above embodiment, the splice tape 1 is used.
6 is presumed to be affixed to the correct position (the center is the position of the gap between the negative films 12). If the negative film 6 is displaced in the transport direction of the negative film 12, the accuracy is corrected by the displaced amount. Gets worse.

Therefore, as shown in FIG.
01 (the center in the width direction of the negative film 12) and the sensor 101A corresponding to one end in the width direction of the negative film 12.
Is arranged. The sensor 101 is connected to the downstream edge of the splice tape 16 in the transport direction (A in FIG.
Part) is detected.

The sensor 101A is a negative film 12
The sensitivity is adjusted to prevent transmission at the base density of the negative film 12 and the rear end corner of the front side of the negative film 12 in the transport direction (B in FIG.
Part). Here, the sensor 10
At the position 1A, there is a perforation 12A for each image frame provided on the negative film 12 and a notch 12B provided near the leading end of the film, and the perforation 12A and the notch 12B may be erroneously detected. However, when the sensor 101 is used in combination, the sensor 101 first detects the edge of the splice tape 16, and when the edge is detected after a predetermined time, the detection of the rear end corner of the negative film 12 (part B in FIG. 11) By doing so, erroneous detection can be prevented.

The dimensions from the portion A to the portion B when the splice tape 16 is accurately attached are stored in advance, and the sensor 101 actually detects the portion A, and the sensor 101A detects the portion B. By calculating an error between the distance obtained from the time until the detection and the conveying speed and the stored dimension, if the error is corrected and the normal position is corrected, the gap between the negative films 12 can be accurately adjusted. It can be made to face on the tape support surface 64. "-Modification 2" As shown in FIG. 12, by disposing two sensors 101B and 101C at both ends in the width direction of the negative film 12, the negative film 1
The rear end corner of the front side in the transport direction 2 (parts B and C in FIG. 12)
Can be detected, and the negative film 12 can be accurately positioned based on the detection result. "-Modification 3" As shown in FIG. 13, by disposing the line sensor 101D capable of scanning the whole area of the negative film 12 in the width direction, the shape of the joint can be recognized, and the positioning can be easily and accurately performed. can do. "-Modification 4" As shown in FIG. 14, in -Modification 4, only the sensor 101A of Modification 1 is provided. For this reason, erroneous detection (detection of the perforations 12A and the notches 12B) is performed by the sensor 101A, but the perforations 12A are provided regularly.
Since the position of the notch 12B from the detection of the final perforation 12A is determined, this regularity may be stored in advance, and may be canceled by software. Thereby, accurate positioning can be performed by one sensor 101A, and even if the position where the splice tape 16 is stuck is shifted, this shift can be corrected. "-Modification 5" As shown in FIG. 15, in Modification 5, one sensor 101E is
A and the notch 12B were disposed at the widthwise end of the negative film 12 on the side where there was no notch 12B. This eliminates the need to cancel the detection of the perforations 12A and the notches 12B by software. "-Modification 6" As shown in FIG. 16, a new perforation 12C is provided at a predetermined distance from the end of the negative film 12 in the transport direction. This perforation 12
By detecting C by the sensor 101A, the end in the negative film transport direction can be accurately recognized. (Modification of processing shape to base surface 68) “-Modification 1” As shown in FIGS. 17A and 17B, a groove 68B is formed in the base surface 68 along the width direction of the negative film 12. did. The grooves 68B prevent the negative film 12 from adhering to the base surface 68, and reduce the frictional force due to the reduced contact area. "-Modification 2" As shown in FIGS. 18A and 18B, a plurality of dimples 68C (hemispherical grooves) were formed on the base surface 68. Thereby, the close contact between the negative film 12 and the base surface 68 can be prevented, and the frictional force can be reduced by reducing the contact area. That is, the effect can be obtained by reducing the contact area of the negative film 12 with various shapes such as a roller shape and a ball shape, not limited to the grooves. (Negative film 12 arranged upstream and downstream of separation unit 30)
Modified Example of Structure for Separating Roller from Splice Tape 16) “-Modified Example 1” As shown in FIG. 19, a plurality of roller pairs (−3 in the modified example)
Pairs) 220, 222, and 224 are provided, and the negative film 12 is separated from the splice tape 16 by rotating these roller pairs 220, 222, and 224 forward and backward. Although the holding force of each roller pair 220, 222, 224 is weak, the holding force is doubled by providing a plurality of rollers, and the negative film 12 does not slip. "-Modification 2" As shown in FIG. 20, a holding body 200 for holding the negative film 12 separate from the transport system on a plane is disposed upstream and downstream of the separation unit 30. This holding body 2
At 00, the pair of flat plates 200A and 200B are normally separated from each other, and the negative film 12 passes between them. When the negative film 12 and the splice tape 16 are separated from each other, the flat plates 200A and 200B are moved in a direction approaching each other, or one of them is moved in a direction approaching the other. The negative film 12 is moved in the transport direction (the rewinding direction is upstream on the separation unit 30 and the feeding direction is downstream).

Thus, the negative films 12 can be pulled in a direction away from each other and separated from the splice tape 16. Since the negative film 12 is held between the surfaces, the holding is ensured. "-Modification 3" As shown in FIG. 21, three rollers 202, 204, 2
06 are arranged in a staggered manner so as to sandwich the transport path of the negative film 12, and the axes of the rollers 202, 204 and 206 are located at the vertices of an equilateral triangle.
For this reason, the negative film 12 is
With a driving force of 4, 206, the sheet is conveyed meandering while being wound around these predetermined angles. By winding a small amount around each of the rollers 202, 204, and 206 in this manner, the clamping force is increased by several steps as compared with a case where the film is merely clamped, and the negative film 12 can be reliably pulled.

Incidentally, in order to prevent meandering of the negative film 12 during normal transport, one roller 204 may be movable in the direction perpendicular to the axis. "-Modification 4" As shown in Fig. 22, the shape is the same as -Modification 3, but in -Modification 4, when the negative film 12 is separated from the splice tape 16, each roller 202, 204, Stop driving of 206,
The negative film 12 is moved in the transport direction. In other words, by winding a small amount around each of the rollers 202, 204, and 206, it is equivalent to holding the negative film 12, and by pulling the negative film 12 as it is, the negative film 12 can be separated from the splice tape 16. (Modification of Structure for Removing Splice Tape 16 from Separating Section 30) “-Modification 1” As shown in FIG. 23, in this -Modification 1, the air suction port 48A is provided in the head portion 48 and is not shown. This is a structure in which air is sucked by suction means. For this reason, as shown in FIG. 23A, after the head portion 48 is brought close to the separating portion 30 and pressurized, the negative film 12 is separated in the state of FIG. 23B, and after the separation, the negative film 12 is drawn from the suction port 48A. Suction is started, and the head unit 4 is sucked while the splice tape 16 is being sucked.
8 is separated from the separation unit 30 (FIG. 23).
(See (C)), the splice tape 16 is peeled off from the separation unit 30 and then dropped into the waste box 82 by its own weight by releasing suction. "-Modification 2" As shown in FIG. 24, this -Modification 2 has a structure in which the push-out pin 208 protrudes from the base surface 68. That is, as shown in FIG. 24A, after the head portion 48 is brought close to the separating portion 30 and pressed, the negative film 12 is separated in the state of FIG. When the tape is returned to the original state, the splac tape 16 is
Remains. By causing the push pin 208 to protrude in this state, the splice tape 16
8 and is separated from the base surface 68 and the tape support base surface 64 (see FIG. 24C). Here, by returning the push-out pin 208 to its original position, the splice tape 16 has already lost its adhesive strength,
And, the tape support table surface 64 can be slid down and dropped into the waste box 82. "-Modification 3" As shown in FIG. 25, the feature of the -Modification 3 is that, after the negative film 12 is separated, the base surface 68 is opposed to the tape supporting surface 64 against the urging force of the compression coil spring 78. Dent.

As shown in FIG. 25A, the head 4
8 is brought close to the separation unit 30 and pressurized.
When the negative film 12 is separated in the state shown in FIG.
Remains on the base surface 68 and the tape support surface 64. When the base surface 68 is depressed in this state, the splice tape 16
Is supported only by the tape support table surface 64 (see FIG. 25C). Since the tape support surface 64 has a small area, the drop due to its own weight overcomes the adhesive force, and the splice tape 16 falls into the waste box 82. Note that air may be blown out from the slit hole 66 as in this embodiment. "-Modification 4" As shown in FIG. 26, -Modification 4
In the figure, a narrow groove 212 is formed in the tape support surface 64 in the width direction of the negative film 12. This groove 2
A peeling member 214 is provided in the extension direction of the twelve.
The peeling member 214 has a claw portion 214A that enters the groove 212 from one side in the width direction of the tape support base surface 64 by the driving force of a driving unit (not shown) and exits the other. That is,
The width of the claw portion 214A is slightly smaller than the width of the groove 212.

When the separation of the negative film 12 is completed and only the splice tape 16 is left in the separation portion 30, the peeling member 214 is driven to move from one of the tape support table surfaces 64 toward the groove 212. Let it. As a result, when the claw portion 214A passes through the groove 212, the claw portion 214A comes into contact with the splice tape 16 and gradually separates from the width direction of the tape support base surface. When the peeling member 214 comes off to the other side, the splice tape 16 is completely separated from the separation unit 30 and falls into the waste box 82 by its own weight.

As described above, in the fourth modification, since the splice tape 16 is directly removed, the work reliability is the highest.

[0097]

As described above, the method for discarding a photographic film joining tape according to the present invention can quickly discard the tape remaining after the separation of the joining portion between two photographic films is completed. It has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a separation device between joints according to the present embodiment.

FIG. 2 is a plan view showing a joining portion at the front and rear ends of a negative film.

FIG. 3 is a plan view showing a state where a joint portion of a negative film is positioned on a pedestal.

FIG. 4 is an exploded perspective view of the base.

FIG. 5A is an enlarged view of a separation unit showing a state in which a joining unit is positioned on a pedestal, and FIG. 5B is a diagram showing a state in which a head unit is operated to apply pressure and heat.

FIG. 6 is a side view showing an operation state of a head unit and a base when a splice tape is peeled off.

FIG. 7 is an effect diagram of a glue remaining factor in each control factor.

FIG. 8 is a diagram showing the effect of the death splice force on each control factor.

FIG. 9 is a side view showing a modified example of the pedestal (-modified example 1).

FIG. 10 is a side view showing a modification of the pedestal (-modification 2).

FIG. 11 is a plan view showing a modified example of an arrangement state of a sensor for positioning a joint (-modified example 1).

FIG. 12 is a plan view showing a modified example of an arrangement state of a sensor for positioning a joint (-modified example 2).

FIG. 13 is a plan view showing a modified example of the arrangement state of the sensors for positioning the joint (-modified example 3).

FIG. 14 is a plan view showing a modification of the arrangement state of the sensors for positioning the joint (-modification 4).

FIG. 15 is a plan view showing a modification of the arrangement state of the sensors for positioning the joint (-modification 5).

FIG. 16 is a plan view showing a modification of the arrangement of the sensors for positioning the joint (-modification 6).

FIG. 17 is a plan view showing a modification of the processing for reducing the contact area formed on the base surface (-modification 1).

FIG. 18 is a plan view showing a modification of the processing for reducing the contact area formed on the base surface (-modification 2).

FIG. 19 is a side view showing a modified example of the holding structure when the negative film is separated from the splice tape (-Modified Example 1).

FIG. 20 is a side view showing a modified example of the holding structure when the negative film is separated from the splice tape (-Modified Example 2).

FIG. 21 is a side view showing a modification of the holding structure when the negative film is separated from the splice tape (−Modification 3).

FIG. 22 is a side view showing a modification of the holding structure when the negative film is separated from the splice tape (-Modification 4).

FIG. 23 is a side view showing a modification of the step of removing the splice tape (-Modification 1).

FIG. 24 is a side view showing a modification of the step of removing the splice tape (-modification 2).

FIG. 25 is a side view showing a modification of the splice tape removing step (-modification 3).

FIG. 26 is a side view showing a modification of the splice tape removing step (-modification 4).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Desplicer (separation apparatus) 12 Negative film (photographic film) 30 Separation part 48 Head part 50 Cylinder 52 Pedestal 58 Main body 60 Back pad 64 Tape support base surface 68 Base surface 68A Groove (non-contact part) 78 Compression coil spring

Claims (7)

(57) [Claims] 1. A part in which the front and rear ends of two photographic films are joined by a tape to which an adhesive has been applied is positioned between a pedestal and a head portion, and pressure is applied by bringing the head portion close to the pedestal. A method for disposing of a tape for bonding photographic films, comprising heating and weakening the adhesive strength of the tape, and discarding the tape on the pedestal remaining after the photographic film is pulled and separated in a direction away from each other, wherein the tape mounting on the pedestal is performed. Air is blown out from part of the mounting surface,
A method for discarding a tape for bonding photographic films, wherein the tape is blown off in a predetermined direction by the discharge pressure of the air. 2. The head unit continues to pressurize and heat at the time of the air blowing, and separates from the pedestal in a state where the tape is pressed down on the head unit according to separation of the head unit thereafter. 2. The method according to claim 1, wherein the tape is discarded by dropping when the air is released. 3. A part in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head, and the head is brought close to the pedestal to apply pressure. A method of discarding a tape for joining photographic films, wherein the tape is heated to weaken the adhesive strength of the tape, and the tape on the pedestal remaining after the photographic film is pulled and separated in a direction away from each other is discarded. A method for discarding a tape for bonding photographic films, characterized in that an opening is provided, the tape is sucked when the head part is separated, separated from the pedestal, and discarded by dropping together with release of air suction. 4. A position where the leading ends of the two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head portion, and pressure is applied by bringing the head portion close to the pedestal. A method for disposing of a tape for joining photographic films, comprising heating and weakening an adhesive force of the tape, and discarding a tape remaining on a pedestal remaining after the photographic film is pulled and separated in a direction away from each other, wherein the tape mounting on the pedestal is performed. Push the pressure pin out of a part of the mounting surface to separate the tape from the pedestal surface and drop it.
And a method for discarding a tape for bonding photographic films. 5. A portion in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head portion, and pressure is applied by bringing the head portion close to the pedestal. A method for disposing of a tape for bonding photographic films, comprising heating and weakening the adhesive strength of the tape, and discarding the tape on the pedestal remaining after the photographic film is pulled and separated in a direction away from each other, wherein a part of the pedestal is removed. By leaving and recessing others,
A method for discarding a tape for bonding photographic films, wherein the contact area with the tape is extremely small and discarded. 6. A portion in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head portion, and pressure is applied by bringing the head portion close to the pedestal. A method of discarding a tape for bonding between photographic films, wherein the tape is heated to weaken the adhesive force of the tape, and the tape on the pedestal remaining after the photographic film is pulled and separated in a direction away from each other is discarded. Disposing a peeling claw so as to interfere with the tape, and peeling off the tape from a pedestal according to the movement. 7. A portion in which the front and rear ends of two photographic films are joined by a tape coated with an adhesive is positioned between a pedestal and a head, and the head is brought close to the pedestal to apply pressure. A method of discarding a tape for joining photographic films, wherein the tape is heated to weaken the adhesive strength of the tape, and the tape on the pedestal remaining after the photographic film is pulled and separated in a direction away from each other is discarded. Providing a mouth, the head unit pressurizes, blowing air from a part of the tape mounting surface of the pedestal while continuing heating, and separating the head unit while sucking the tape when the head unit separates, Wherein the tape is separated from the pedestal in a state where the tape is held down by a head portion, and is discarded by dropping together with suction and discharge of air and discarded. The method of disposal.