JPH07271005A - Method for splicing and separating photographic film - Google Patents

Abstract

PURPOSE:To obtain a method for splicing and separating photographic film by which a cut part caused by repetitively separating and splicing the photographic film is reduced, the photographic film the reprinting of which is ordered is prevented from getting short, and the deformation of a spliced part is restrained even when the photographic film is kept for a long time in a taken-up state. CONSTITUTION:In the case the photographic film is taken up in a comparatively short time such as the case it is taken up in a roll state, a splicing tape 40 is superposed and stuck, so that the number of times of cutting the negative film 26 is reduced. Then, the negative film 26 is cut in such a shape that stress is not concentrated at the time of bending the film 26, whereby the spliced part is not bent even when the film is drawn out after it is kept in a cartridge for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cuts the vicinity of the rear end of a photographic film and separates it from the cartridge. The present invention relates to a method of joining and separating the photographic films in the simultaneous printing step and the reprinting step, in which the photographic films separated from each other are joined to the photographic film remaining together with the cartridge, and wound up and stored in the cartridge.

[0002]

2. Description of the Related Art In general, in a photo lab, a negative film, which has been taken up and is wound up in a cartridge, is taken out and separated from the cartridge for development processing. The developed negative film is cut (piece negative) into a predetermined length (for example, every 6 image frames) and returned to the customer together with a photographic print.

In recent years, there has been studied a method of winding a negative film, which has been subjected to development processing, on a spool without cutting it and returning it to a customer for a long time. This eliminates the need for the work of cutting to a predetermined length and the complicated work of connecting the piece negatives when reprinting.

By the way, especially in a large developing laboratory (large laboratory), since it is necessary to perform the processing quickly, the negative film drawn out from the cartridge is cut while leaving a part thereof, and a plurality of negative films are joined with a bonding tape. After joining and rolling, predetermined processing (development processing in simultaneous printing,
For example, a printing process for printing paper is performed, and a printing process for printing is performed for reprinting.

After the above processing is completed, the negative films are separated one by one, re-bonded to the remaining negative film together with the cartridge, and wound up on the cartridge.

Each time the negative film is bonded, the area where the bonding tape is applied is cut off when the negative film is separated. Since this is premised on winding in a cartridge for long-term storage, if wound with the joining tape left, the negative film will have irregularities (tape movement) due to the joining tape and damage the image. This is because there is a fear. According to experiments, it has been found that the flatness of the film falls within an allowable range when only one bonding tape is attached.

[0007]

However, the negative film is gradually shortened as the number of reprint orders increases. The length of the trailing edge of the negative film after the final image frame is limited due to the relationship with devices such as printers, and if it is cut off, if there is a margin in the length, the number of frames taken and the cost will increase. become.

Further, in the pasting method of attaching the joining tape, the negative film is cut along the width direction, and both are abutted and joined. When such bonding is performed, the film is wound into a cartridge and stored for a long period of time, the next time when the negative film is to be pulled out from the cartridge, the force to straighten the negative film 100 works as shown in FIG. Bending occurs with respect to the curl, stress concentrates on the joining portion that is the weakest against this bending, and the joining tape 102 bends (gull-like deformation as shown in FIG. 5).

For this reason, the film edge portion is caught in the drawing opening of the cartridge, so that the negative film cannot be drawn out smoothly.

In consideration of the above facts, the present invention aims to reduce the cut-off portion by repeating the photographic film separation and joining,
It is an object of the present invention to provide a method for joining and separating photographic films which can prevent the length of the photographic film from being shortened for reprinting orders and can reduce the deformation of the joint portion during long-term storage in a rolled-up state of the photographic film.

[0011]

According to a first aspect of the present invention, a photographic film is cut in the vicinity of its rear end to be separated from a cartridge, and a plurality of photographic films are joined with a joining tape to form a roll. 1 piece of photographic film after prescribed processing
A method of joining and separating the photographic films in the simultaneous printing step of separating each book and joining with the photographic film remaining with the cartridge, and winding and storing in a cartridge, and the reprinting step at the time of the simultaneous printing. At the time of separation after rolling in, the bonding tape pasting area is cut off, and at the time of separation from the cartridge during the reprinting step, the bonding tape used for bonding after separation from the cartridge during the simultaneous printing It is characterized in that it is cut at the intermediate portion of the above, and the joining tape for roll forming is laminated or stuck on the same position.

According to a second aspect of the present invention, after cutting the vicinity of the rear end of the photographic film to separate it from the cartridge, a plurality of photographic films are joined with a joining tape and rolled, and after a predetermined treatment, the photographic film is processed. Is separated for each one,
Joined with the photographic film remaining with the cartridge,
Bonding between the photographic films in the simultaneous printing step of winding and storing in a cartridge and the reprinting step,
A separation method, wherein the joining tape is peeled off at the time of separation after roll formation at the time of the simultaneous printing, and when joining the photographic film remaining on the cartridge side, a peeling trace of the peeled joining tape is covered. Bonding is performed by another bonding tape having the above structure, the bonding tape adhering area is cut off when separating from the cartridge at the time of reprinting, and the bonding tape is separated at the time of separation of the roll trace at the time of reprinting. Is peeled off, and at the time of joining with the photographic film remaining on the cartridge side, it is joined by another joining tape having an area which covers the peeling mark of the peeled joining tape.

According to a third aspect of the present invention, the mating surface for joining the photographic films has at least an inclined surface.

According to a fourth aspect of the present invention, the mating surface for joining the photographic films is cut in the width direction so that both ends in the width direction have steps, and the steps are continuously formed by slopes. It is characterized by being.

[0015]

According to the first aspect of the present invention, in the case of simultaneous printing, the joining tape adhering region is cut off in the conventional separation after roll-forming. However, at the time of reprinting, at the time of separation from the cartridge, cutting is performed at the intermediate portion of the joining tape attached. At this time, the bonding tape remains attached. At the time of joining for roll forming, it is laminated or back-adhered in the same manner as this joining tape.
Since the rolled photographic film is not wound up for a long period of time, there is no fear of deformation of the photographic film due to this joining tape even if there is a part to be overlaid.

When the photographic film is separated after processing,
After cutting the joining tape pasting area as before, it is joined with the photographic film remaining in the cartridge by a new joining tape and wound up, so there is only one joining tape during long-term storage in the cartridge. The flatness can be maintained.

Thus, in claim 1, when the simultaneous printing and the reprinting are both performed once, the number of times the photographic film is cut off can be reduced from three times to two times.

According to the second aspect of the present invention, at the time of separation after rolling during simultaneous printing, the joining tape is peeled off,
At the time of joining with the photographic film remaining in the cartridge, the joining is performed by the joining tape having a larger area than the pasting area of the joining tape. As a result, the glue that remains when the joining tape is peeled off last time does not spill out, and the photographic film wound into layers is not adhered.

At the time of reprinting, when the photographic film is pulled out from the cartridge and rolled, the joining portion is cut off as in the conventional case. However, when separating the rolled photographic film after a predetermined process, the joining tape is peeled off and joined with the photographic film remaining in the cartridge by a joining tape larger than this joining tape.

Thus, according to the second aspect, when the simultaneous printing and the reprinting are both performed once, the number of times the photographic film is cut off can be reduced from the conventional three times to one.

According to the third aspect of the present invention, since the mating surface at the time of joining is an inclined surface, the stress to the joining portion is dispersed when the cartridge is taken out after being wound up, and the film joining portion is not broken. It can be lost.

According to the fourth aspect of the invention, the mating surfaces at the time of joining are not merely inclined surfaces, but only the both widthwise end portions are cut along the widthwise direction. As a result, it is possible to eliminate the acute-angled portions at both widthwise end portions of the photographic film caused by the slope cut, and to more reliably pull out from the cartridge.

[0023]

1 shows a film joining / separating apparatus 10 according to this embodiment. Film splicer / separator 1
At 0, a cartridge hopper unit 12 is provided. The cartridge hopper portion 12 has a tubular shape, and the cartridge 14 is loaded therein in the vertical direction.

The lowermost end of the cartridge hopper portion 12 also serves as a cartridge loading position.

A spool shaft 16 is projected from the cartridge 14. Further, an opening 18 for drawing out and winding the film is provided on a part of the outer periphery of the cartridge 14, and a door 20 which can be opened and closed is attached. This door 20
Is formed on a part of the rotary shaft 22, and one end of the rotary shaft 22 is projected to the outside of the cartridge 14.

At the lowermost part of the cartridge hopper section 12, a spool driver and a door driver (not shown) are projected into the cartridge hopper section 12,
The spool driver is the spool shaft 16 of the cartridge 14.
And the door driver engages with the rotating shaft 22 for opening and closing the door 20.

Further, a shutter (not shown) is attached to one side surface of the cartridge 14 at the lowermost portion, and a pressing means is arranged on the other side surface.
Here, when the processing of the cartridge 14 located at the bottom is completed, the shutter is opened, the cartridge 14 is pushed out by the pressing means, and after being pushed out, the cartridge 14 at the second stage from the bottom is lowered by its own weight. It is configured to fall to the position and become the loading position.

A through hole 24 is provided at a position corresponding to the opening 18 of the cartridge 14 at the loading position of the cartridge hopper portion 12.

When the door 20 of the cartridge 14 in the loading position is opened by driving the door driver and the spool driver is rotated, the spool shaft 1 in the cartridge 14 is rotated.
The negative film 26 wound up and accommodated in 6 is sequentially drawn out, and sent out from the through hole 24 to the conveying section 28.

On the contrary, when the negative film 12 is wound into the cartridge 14, the cartridge hopper unit 1
2, the empty cartridge 14 is loaded, and the transport unit 28
The negative film 26 fed from is wound up in sequence.

A plurality of roller pairs (four roller pairs 30, 32, 34, 36 in this embodiment) are arranged in the conveying section 28, and the negative film 26 is formed by these roller pairs 3.
It is designed to be conveyed while being sandwiched between 0, 32, 34 and 36.

First viewed from the cartridge hopper section 12
A cutter portion 38 is provided between the roller pair 32 and the second roller pair 34, and operates when the negative film 26 is in a substantially fully pulled out state with a slight margin, and The negative film 26 is separated from the cartridge 14 except for a part of the negative film 26 locked to the 26. It should be noted that the amount with this margin is such a length that when the negative film 26 remaining in the cartridge 14 is fully drawn out, it reaches such a degree that it is clamped by the fourth roller pair 46. Also, this remaining negative film 26
Are contained in the cartridge 14.

Here, the cut shape of the negative film 26 by the cutter 38 is, as shown in FIG. 2, slightly cut along the width direction with both ends in the width direction having a step in the length direction, and an intermediate portion. The part is cut so as to be continuous with the cut parts at both ends in the width direction by slopes. By this cutting shape,
With respect to the bending of the negative film 26 after the bonding tape 40, which will be described later, is applied, a structure in which stress is not concentrated at the bonding portion can be adopted.

The second roller pair 32 and the third roller pair 34
A splicer 42 is disposed between the and. The splicer 42 is heated to a predetermined temperature, and is moved so as to come into contact with and separate from the negative film 26.
4 and a pedestal 46 that holds the negative film 26 together with the head portion 44, and includes the joining tape 40 wound in a roll shape.

Two kinds of joining tapes 40 are provided, one of which has a width of 3/4 inch and the other of which has a width of 1 inch (used in the modified example).

Position of this splicer 42 (support 46
When the front end and the rear end of the two negative films 26 are butted against each other and positioned on the upper side, the joining tape 40 is cut into a predetermined length and affixed to the butted surface, and the head portion 44 descends. Then, the joining tape 40 is thermoset, and the negative film 26 is joined.

Third roller pair 34 and fourth roller pair 36
A des-plicer 48 is disposed between and. The desplicer 48 is composed of a head portion 50 which is heated to a predetermined temperature and is moved so as to be able to come into contact with and separate from the negative film 26, and a cradle 52 which holds the negative film 26 together with the head portion 50. There is.

The desplizer 48 heats the joining tape 40 attached by the splicer 42,
The adhesive tape has a function of weakening and stripping the adhesive tape, and the peeled joining tape 40 is accommodated in the waste box 54.

Further, the desplicer 48 is provided with a negative film cutting cutter 57. The cut-out cutter 57 sounds so that two positions in the longitudinal direction of the negative film 26 including the joining tape 40 region can be cut at the same time, and the joining by the joining tape 40 is performed.
The two negative films 26 are separated by being cut off together with the negative film 26. The shape cut by the cutting cutter 57 is also the shape shown in FIG.

The discarded joining tape 40 (and the negative film 26) is stored in the waste box 54.

A reel 56 is arranged downstream of the fourth roller pair 36. The long negative film 26, which is sequentially drawn from the cartridge 14 and joined by the joining tape 40 by the splicer 42, is wound around the reel 56 in layers.

The roll-shaped negative film 26 having a predetermined winding diameter is detached from the reel 56 and conveyed to the developing process or the baking process.

The roll-shaped negative film 26, which has undergone the predetermined steps, is loaded on the reel 56 and is rotated in the opposite direction to be sequentially fed from the outermost layer to the fourth roller pair 36. Has become.

That is, the carrying section 28 is the cartridge 1
Supply of the negative film 26 pulled out from the No. 4 to the reel 56, and the negative film 26 pulled out from the reel 56.
The cartridge 14 has a structure capable of performing two kinds of operations.

The operation of this embodiment will be described below. First, in the case of simultaneous printing, the cartridge 14 containing the photographed negative film 26 is loaded into the cartridge hopper unit 12.

The spool driver is engaged with the spool shaft 16 of the cartridge 14 at the lowest position, and the door driver is engaged with the rotary shaft 22 of the door 20.

Then, by rotating the spool driver in the film drawing direction, the negative film 26 is discharged from the cartridge 14 from the outermost layer through the opening 18. Here, at the time when the leading end is nipped by the second roller pair 32, the cutter unit 38 operates to cut the leading end of the negative film 26 into a predetermined cut shape (FIG. 2).
reference).

Then, the negative film 26 is applied to the first to fourth films.
It is nipped by the roller pairs 30, 32, 34 and 36 of FIG.

When the drawing of the negative film 26 is completed with a slight margin (at least the rear end of the final image), the cutter portion 38 is actuated, and one of the negative films 26 locked to the spool shaft 16 is operated. The negative film 26 is cut and separated from the cartridge 14 except for the portion. The cut shape by the cutter portion 38 is also the shape shown in FIG.

The cartridge 14 separated from the negative film 26 is discharged from the cartridge hopper section 12 by opening the shutter of the cartridge hopper section 12 and operating the pressing means. As a result, the second-stage cartridge 14 drops to the loading position by its own weight.

Here, the conveyance is stopped when the rear end portion in the conveying direction reaches between the second roller pair 32 and the third roller pair 34, that is, when it reaches the pedestal 46 of the splicer 42, and the next cartridge is stopped. Negative film 26 pulled out from 14
Wait for the tip.

When the leading end of the next negative film 26 reaches the position of the receiving base 46 of the splicer 42, the leading end and the trailing end of the negative film 26 are butted against each other. At this time, since the same cutter portion 38 cuts the same cut shape, the negative film 26 can be linearly butted.

In this state, the joining tape 40 is cut into a predetermined length, placed on the abutting surface, and the head portion 44 is lowered and heated. As a result, the bonding tape 40 is thermoset and the negative films 26 can be bonded to each other.

When the bonding is completed, the driving of the first to fourth roller pairs 30, 32, 34, 36 is restarted, and the negative film 26 is sequentially wound on the reel 56.

By repeating the above processing, the reel 5
6, a rolled negative film 26 having a predetermined winding diameter is formed, and the rolled negative film 26 is used for the reel 5
It is removed from No. 6 and is subjected to a developing process and a baking process.

Next, the procedure for rewinding the negative film 26, which has undergone the development processing and the printing processing, into the cartridge 14 will be described.

First, the cartridge 1 when rolled
4, the empty cartridges 14 are loaded again into the cartridge hopper unit 12 in the order corresponding to No.
To load. (First Winding Procedure) The negative film 26 retained by the spool shaft 16 from the cartridge 14 at the lowest position is fully pulled out, and the leading end is conveyed to the position of the splicer 42.

On the other hand, the negative film 26 is pulled out from the reel 56 and the leading end in the carrying direction is sent to the position of the splicer 42. In this state, by operating the splicer 42, the negative film 26 is adhered by the joining tape and rewound into the cartridge 14. (Second and subsequent winding procedures) Next, the negative film 26 is sequentially wound up, and the joining portion with the next negative film 26 is formed by the desplicer between the third roller pair 34 and the fourth roller pair 36. When it reaches the 48th position, the cutting cutter 57 is temporarily stopped and the cutting cutter 57 is operated.

As a result, the two negative films 26 are separated. Negative film 2 on the first cartridge 14
When all 6 are accommodated, this cartridge 14 is ejected, the next cartridge 14 falls to the loading position, the remaining negative film 26 is pulled out, and the splicer 42
The second negative film 26 and the bonding tape 4 at the position
Joined by 0.

By repeating this in sequence, the negative film 26 can be stored in the cartridge 14 again.

At this time, the bonding tape 40 is attached to only one place on the negative film 26 accommodated in the cartridge 14, but one bonding tape 40 is used.
Then, the negative film 26 is not deformed, and long-term storage is possible.

Next, the processing when there is a request for reprinting will be described. At the time of reprinting, the joining portion of the negative film 26 pulled out from the cartridge 14 is aligned with the joining surface while leaving the joining tape 40, and the cutter unit 3 is attached.
It is cut at 8 and rolled, that is, the splicer 42 overlaps and bonds the bonding tape 40 with the bonding tape 40 remaining. In this state, the reel 56 is wound in layers, but since the reel 56 is only wound for a relatively short time, even if the joining tape 40 is affixed to the negative film 26, Does not deform.

The roll-shaped negative film 26 that has been subjected to the reprinting process (baking process) is set on the reel 56 in the same manner as in the simultaneous printing, the joint portion is cut off, and the negative film 26 remains in the cartridge 14. The cartridge 1 is joined by a new joining tape 40.
It is housed in 4. Also in this case, since the number of the joining tapes 40 is one, the negative film 26 is not deformed due to the joining tapes 40 even if it is stored for a long time.

As described above, when the joining tape 40 is used for roll-forming at the time of reprinting, the tapes are overlapped, so that the conventional joining procedure is applied as compared with the case where the conventional joining procedure is applied.
It is possible to reduce the cutting process once for each reprint, and it is possible to effectively use the rear end portion of the negative film 26 rather than the final image.

(Modification) A modification of this embodiment will be described below.

As shown in FIG. 3, a bonding tape 40 having a width of 3/4 inch is used at the time of roll-bonding for simultaneous printing, and when the negative film 26 is separated from the roll, it is positioned at the position of the dessplicer 42. The joining tape 40 having a width of 3/4 inch is peeled off, and the joining tape 40 having a width of 1 inch is used when joining the negative film 26 remaining in the cartridge 14. As a result, the adhesive remaining on the negative film 26 can be covered with the 1-inch width bonding tape 40 when the 3 / 4-inch width bonding tape 40 is peeled off. Film 26
It is possible to prevent the mutual adhesion. Further, by peeling off the joining tape 40 having a width of 3/4 inch, it is possible to avoid the cut-off processing at the time of simultaneous printing. Therefore, the negative film 26 does not become short during simultaneous printing.

On the other hand, at the time of reprinting, the joint portion of the negative film 26 is cut off when rolled. That is, the negative film 26 that remains on the spool of the cartridge 14 is retained by the cutter 57 for discarding the dissplicer 42.
Then, the 1-inch wide joining tape 40 area is cut off.

After that, in the case of roll formation or separation from the roll, as in the case of simultaneous printing, they are joined with a 3/4 inch width joining tape 40, peeled off, and then joined with a 1 inch width joining tape 40.

As a result, the number of times of trimming at the time of reprinting can be completed once, and the truncation in the case where both simultaneous printing and reprinting are performed is performed twice as compared with the case where the conventional joining procedure is applied. Can be reduced.

According to the present embodiment, in the case where the tape is wound for a relatively short time, such as when it is wound in a roll, the bonding tape 40 is laminated and stuck, or the bonding tapes 40 having different widths are used. Using the previous joining tape 40
The adhesive tape remaining after the peeling is completely covered with the wide bonding tape 40, and the number of times the negative film 26 is cut off can be reduced as compared with the case where the conventional bonding procedure is followed as it is, and the final image of the negative film 26 is obtained. The limited length after the frame can be effectively used.

Further, since the cut shape of the negative film 26 is such that stress is not concentrated when the negative film 26 is bent, even if the negative film 26 is stored in the cartridge 14 for a long period of time and then withdrawn, the joint portion does not bend, and it is smooth. It can be pulled out from the opening 18 of the cartridge 14.

As shown in FIG. 4, this cut shape can obtain the same effect by simply cutting diagonally, but the acute angle portion of the cut shape is preferably 60 ° or less. (Application example of the present embodiment) By the way, the above-described configuration can deal with simplification of production management data transfer in a so-called large laboratory that processes a large amount of film.

That is, in a large laboratory, for film development, print processing, etc., usually, a large amount of batch processing is performed after splicing and rolling the film. A punching hole was provided in the film to carry the film in pairs, but in order to eliminate this complexity, the film is stored in a memory card and data is transferred by this memory card (for example, Japanese Patent Laid-Open Publication No. Sho. 63-201641, the same 6
3-201645). In recent years, it has been considered to provide a magnetic layer on the film itself and magnetically record data on the magnetic layer (see, for example, US Pat.
See No. 4,965,627).

The production control data indicates the passage processing time of each process without a lab, lot No. number of lots in a lot, worker ID, exposure condition, used machine No. or ID, pass rate, etc. In order to increase (or manage) productivity in
This is useful information.

Here, although the processing with the memory card eliminates the complexity of transportation, a card reading device is required for each step, the unit price of the card itself is high, and data is recorded on the magnetic layer on the film. Recording is the most efficient and leads to simplification of the device.

On the magnetic layer, for example, depending on the camera and its peripherals, the number of sheets ordered, the type of surface to be printed, the character to be printed, the shooting information (lens used during shooting, shutter speed, sensitivity, temperature, Humidity, date, time, characters for title, character designation color, character background color, etc.) can be recorded. Here, since the information can be read by the magnetic head while the film is being passed along the normal transport path, the lab equipment itself can be manufactured at low cost, and the operator manages something other than the film (in the above, the memory is used. Since the card) is eliminated, work efficiency can be improved.

However, the magnetic layer on the film is a limited area, and the production control data may not be recorded sufficiently in some cases. Even if the customer area and the lab area are separated, the information in the customer area is accidentally deleted, or the information recorded in the lab area leaks out of the lab. There is a fear.

Therefore, as a medium for recording the production control data of each roll in a large laboratory, a leader (or a dummy film) with a magnetic layer is joined to the front end or the rear end of the roll, and this is used as a storage medium.

As a result, even if the film does not have a magnetic layer, the medium on which the production control data is recorded and the film roll can be integrated, and the workability of transportation and the like can be improved. Further, when there is a large amount of information, the length of the storage medium may be freely adjusted, and there is no limit to the amount of data to be stored. Further, even if the film has a magnetic layer, the problem of accidentally erasing the customer's personal data is eliminated.

The most problematic point of joining the leader or the like is that the number of joints of the rolled film increases. This increase in the number of joints results in an increase in the number of film cuts during separation. However, even if the number of joining and separating steps is increased, by applying this embodiment, it is not necessary to cut the film each time the film is separated, and the number of cut films can be reduced.

[0081]

As described above, the method for joining and separating photographic films according to the present invention is intended to reduce the cut-off portion by repeating the photographic film separation and joining, and to prevent the photographic film from being shortened for reprinting orders. It has an excellent effect that it is possible to reduce the deformation of the joint portion for long-term storage in a rolled state of the photographic film.

[Brief description of drawings]

FIG. 1 is a plan view of a film attaching / detaching device according to this embodiment.

FIG. 2 is a plan view showing a cut shape of a negative film.

FIG. 3 is a plan view of a case where joining tapes having different widths according to a modified example are attached.

FIG. 4 is a plan view showing a modified example of the cut shape of the negative film.

FIG. 5 is a side view showing a state in which a negative film in a conventional cut shape is bent.

[Explanation of symbols]

 10 Film Splicing / Separating Device 12 Cartridge Hopper 14 Cartridge 16 Spool 20 Door 26 Negative Film (Photographic Film) 28 Conveyor 38 Cutter 40 Splicing Tape 42 Splicer 48 Desplicer 56 Reel 57 Cut-off Cutter

Claims (4)

[Claims] 1. A photographic film is cut in the vicinity of the rear end thereof and separated from the cartridge, and then a plurality of photographic films are joined with a joining tape to form a roll, and after predetermined processing, the photographic films are separated one by one. A method of joining and separating the photographic films in the simultaneous printing step and reprinting step in which the photographic film remaining together with the cartridge is wound and stored in a cartridge. When separating,
In addition to discarding the bonding tape application area, at the time of separation from the cartridge during the reprinting step, cut at the middle part of the bonding tape used for bonding after separation from the cartridge during the simultaneous printing, and roll it. A method for bonding and separating photographic films, characterized by stacking or backing a bonding tape for the same at the same position. 2. A photographic film is cut in the vicinity of the rear end thereof and separated from the cartridge, and then a plurality of photographic films are joined with a joining tape to form a roll, and after predetermined processing, the photographic films are separated one by one. A method of joining and separating the photographic films in the simultaneous printing step and reprinting step in which the photographic film remaining together with the cartridge is wound and stored in a cartridge. At the time of separation, the joining tape is peeled off, and at the time of joining with the photographic film remaining on the cartridge side, another joining tape having an area covering the peeling mark of the peeled joining tape is joined, and at the time of the reprinting. At the time of separation from the cartridge, the bonding tape attachment area is cut off, and the roll marks during the reprinting process are removed. Is characterized in that the joining tape is peeled off at the time of separation, and at the time of joining with the photographic film remaining on the cartridge side, it is joined by another joining tape having an area to be peeled off of the peeled joining tape. Method of joining and separating photographic films. 3. The method for joining and separating photographic films according to claim 1 or 2, wherein a mating surface for joining the photographic films has at least an inclined surface. 4. The mating surface for joining the photographic films is cut in the width direction so that both ends in the width direction have steps, and the steps are continuous by slopes. A method for joining and separating photographic films according to claim 1 or claim 2.