JP3413299B2 - Shading control method for photo film patrone production line - 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 production line, and more particularly to a method of controlling light shielding in the production line.

[0002]

2. Description of the Related Art The operation of storing a photographic light-sensitive material such as a photographic film in a storage case or a packaging bag is performed in a dark room to prevent exposure of the photographic light-sensitive material or by covering the device with a light-shielding cover. Has been done. For example, as a device for storing a 135-size photographic film in a cartridge, Japanese Patent Publication No. 6-5363 and Japanese Utility Model Publication No. 1
In the invention and the invention described in JP-A-43707, a photographic film is pulled out from a film roll in which a long photographic film is wound in a roll shape, and perforation and perforation are performed on this photographic film to form a photographic film strip. The steps of manufacturing, winding this photographic film strip around a spool, and storing it in a cartridge are performed while the photographic film passes through the darkrooms which are arranged next to each other. The photo film is transferred between the dark rooms through an opening formed in a partition wall that shields the dark rooms. Further, a light-blocking shutter that blocks light between the dark rooms in an emergency is attached to this opening.

Further, each dark room is provided with a door for exposing the apparatus installed in the dark room to the outside of the dark room or for entering the dark room, for maintenance of the apparatus or loading of film rolls. Is used for. This door has a light-shielding function, and when it is closed, it completely shields the dark room to prevent the photographic film from being exposed.
Further, in the dark room, as in the case of the door, an illumination device that is turned on at the time of maintenance of the device and illuminates the dark room is attached. A white lamp or the like is used as this lighting device. As a result, when a device malfunctions in one of the dark rooms, the light-shielding shutter of the dark room is closed, and then the door is opened to turn on the lighting device. The equipment can be repaired without exposing the photographic film in.

[0004]

By the way, whether or not the photographic film is exposed to light cannot be known unless it is subjected to development processing, but since this development processing is a destructive inspection, it should be carried out on all photographic films. I can't. for that reason,
The exposed photo film is discovered when the user develops it after photographing. Such a defective product not only eliminates the photographing performed by the user, but also significantly lowers the reliability of the product and the manufacturer. In order to prevent such a manufacturing error, in the above-described photo film cartridge manufacturing apparatus, the photo film exposed to light in a dark room is promptly discarded, and in order to reduce the photo film exposed to light, the door and the The illumination device and the light-shielding shutter are operated in a fixed procedure. However, human management such as management of operating procedures largely depends on the degree of skill of the operator, and there is a problem that erroneous operations cannot be completely prevented.

The present invention has been made in view of the above problems, and provides a light-shielding control method for a photographic film cartridge production line in which the photographic film exposed to light is reduced and the exposed photographic film is not mixed into the product. The purpose is to do.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided with a light-shielding shutter at each opening for conveying a photographic film, and at least the open / closed state of these shutters, While collectively monitoring the operating state of the doors that are opened during maintenance or the lighting devices that are turned on during maintenance, provided in any of the darkrooms, when any of these operations are performed to expose the photographic film, The operation is invalidated. According to this, even if the operation of the illumination device, the door, the light-shielding shutter, or the like is mistaken, the operation is invalidated, so that the photographic film is not exposed to light.

According to the second aspect of the present invention, the photograph is set by discriminating whether the photographic film set in a dark room is for production in which an emulsion is coated on a support or for testing. Only when the film is for production, when the operation of exposing the photo film to the door, the lighting device, and the light-shielding shutter is performed, the operation is invalidated. As a result, when the film roll is for testing, it is possible to freely test lighting devices, doors, light-shielding shutters, etc., and even when the film roll is for production, the photo film is exposed to light even if it is operated incorrectly. There is no.

Further, according to the invention of claim 3, a sensor for identifying lighting of the lighting device is provided in the dark room, and when the sensor detects lighting of the lighting device, it is within a range exposed by the lighting device. The photo film is automatically discarded. As a result, the exposed photographic film is not mixed with the product.

According to the present invention, a sensor for identifying the opening and closing of the door is provided in the dark room, and when the sensor detects the opening of the door, the photo film in the dark room is automatically discarded. It was done. As a result, the exposed photographic film is not mixed with the product.

The photographic film cartridge shown in FIG. 9 will be described below. The photo film cartridge 2 includes an upper case 3 and a lower case 4 made of plastic, a spool 5 housed in the upper and lower cases 3 and 4, a lid member 6 and a lock lever 7, and upper and lower cases 3 and 4. Patrone body 9 composed of a label 8 attached to the outside
And a photographic film strip 10 wound around the spool 5 and stored in the cartridge body 9. A photographic film outlet 11 through which a photographic film strip 10 enters and exits is formed at the front-side joint of the upper and lower cases 3 and 4, and a lid member 6 is rotatably provided in the back of the photographic film outlet 11. It is assembled and opened and closed. Also,
A separation claw 12 serving as a guide for picking up the leading end of the photographic film strip 10 wound on the spool 5 and guiding it to the photographic film delivery port 11 is provided at the back of the photographic film delivery port 11 of the lower case 4. There is.

The spool 5 is a photographic film strip 1
A shaft portion 14 around which a rear end portion 13 of 0 is locked and wound;
A data plate 15 formed at one end of the shaft portion 14, a display plate 16a and a gear 16b for locking the spool 5 are provided, and a rotating member 16 attached to the other end of the shaft portion 14 and these data plates. It is composed of disks 17 and 18 attached to the shaft portion 14 between the rotary member 15 and the rotary member 16.

A data label 19 having a bar code printed thereon is attached to the outside of the data plate 15. This bar code indicates information such as the sensitivity of the photographic film strip 10 stored in the cartridge main body 9 and the number of shots, and is read by a device such as a camera. Further, the display plate 16a of the rotating member 16 displays the usage status depending on how it is seen from the opening formed on the side surface of the cartridge 2.
The lock lever 7 is meshed with the gear 16b of the rotating member 16 when the lid member 6 is in the closed position, and the rotation of the spool 5 is restricted. When the lid member 6 is in the open position, the lock lever 7 is separated from the gear 16b and the spool 5
Unlock.

The disks 17 and 18 have a two-step cup shape, and an opening 2 into which the shaft portion 14 is inserted is formed in the central portion.
0 is formed. At the outermost circumferences of the disks 17 and 18, there are formed lips 21 that wrap around the outermost circumference ends of the photographic film strip 10 wound around the shaft portion 14.
The lip 21 prevents the photographic film strip 10 from being loosened in the cartridge body 9 and reliably transmits the rotation in the photographic film feeding direction.

Such a photographic film cartridge 2 is
When unused or used, the photographic film strip 10 is completely wound up in the cartridge body 9 up to the tip thereof, and the lid member 6 is rotated to a closed position for closing the photographic film delivery port 11. In this state, external light does not enter the inside of the cartridge body 9 from the photo film delivery port 11, and the spool 5 is locked by the lock lever 7, so that the spool 5 does not rotate carelessly. Then, the lid member 6 is the photo film delivery port 11
Is released and the spool 5 is rotated clockwise in the figure,
The tip of the photographic film strip 10 is scooped up by the separating claw 12 and sent out from the photographic film delivery port 11.

The photographic film strip 10 housed in the cartridge body 9 described above has a thickness of 80 to 105 μm.
The support is coated with a photosensitive layer having a thickness of 3 to 30 μm. Polyethylene-2,6 naphthalate (PEN) is used as the support. In addition, FIG.
As shown in, the length L of the photographic film strip 10 along the film feeding direction is, for example, 500 to 1700 m.
It has become m. This is determined according to the number of frames of the photographic film cartridge produced. The length W in the film width direction is, for example, 25 mm.

A perforation 23, which is a hole penetrating the photographic film strip 10, is formed on one side in the width direction of the film. This perforation 23
Two are provided on the upper side of the photographing screen 24 along the film feeding direction, and are used to position the photographing screen 24 on the aperture of the camera. In addition, at both ends of the photographic film strip 10, the rear end portion 1 described above is provided.
3 and a tip portion 25 are formed, and a notch 25a is formed in the tip portion 25. The notch 25a is caught by the disc 17 when the photographic film strip 10 is entirely wound in the cartridge body 9, and the notch 25a is formed.
It prevents the portion beyond the end from being caught in the disk 17. As a result, the leading end portion 25 of the photographic film strip 10 slightly floats on the outer periphery of the disc 17, and the leading end portion 25 and the separation claw 12 are easily contacted with each other, so that the feeding of the photographic film strip 10 is more reliable. Become.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 showing an outline of a photographic film cartridge manufacturing apparatus and in FIG. 2 showing a control system, the apparatus is a film processing chamber 27 for processing a long photographic film into a photographic film strip 10, and a photographic film strip. 1
Film winding chamber 2 for winding 0 in the cartridge body 9
8 and. Various operation switches and sensors provided in the film processing chamber 27 and the film winding chamber 28 are controlled by the facility controller 30. Further, the equipment controller 30 is controlled by the host main controller 31 together with the assembling devices arranged in the chambers 27 and 28.

The film processing chamber 27 is a dark room so as not to expose the photographic film to light. The first dark room door 33 and the second dark room door 34, which are doors for entering the room, are provided between the doors 33, 34. And the entry preparation room 35 arranged in the. The first darkroom door 33 and the second darkroom door 34 are automatic doors, and when the operation switch 36 connected to the input port 30a of the equipment controller 30 is operated, a signal instructing opening or closing from the output port 30b. Is sent to the first darkroom door 33 and the second darkroom door 34, and the first darkroom door 33 and the second darkroom door 34 are operated according to this signal. The first darkroom door 33 and the second darkroom door 34 are controlled so that one of them is always closed in order to keep the inside of the film processing chamber 27 in a darkroom state at all times, and the input port 30a of the equipment controller 30 is controlled. Sensors 33a and 34a for detecting the open / closed state of the first darkroom door 33 and the second darkroom door 34 are connected to the.

At the upper part of the film processing chamber 27, there is a white lamp 3 which is a lighting device for illuminating the inside of the film processing chamber 27.
8 is attached. The white lamp 38 is turned on or off by the operation switch 39 connected to the input port 30a of the facility controller 30. Even if the operation switch 39 is operated during the manufacture of the photographic film cartridge 2, the facility controller 30 controls so as not to accept the operation. Further, a sensor 40 for detecting whether the white lamp 38 is on or off is connected to the facility controller 30.

In the film processing chamber 27, a film supply section 43 for supplying a long photographic film 42 is provided. A long photo film 4 is provided in the film supply section 43.
A reel 44, in which 2 is wound with the emulsion surface side up, is set. A label on which a bar code indicating the information of the photo film 42 being wound is printed is attached to the reel 44, and the bar code is read by the reading device 45 when the bar code is set in the film processing chamber 27. To be The reading device 45 is provided with the set photographic film 4
2 identifies whether it is a production film having an emulsion coated on a support or a test film, and sends the result to the equipment controller 30.

Further, based on the data of the photographic film 42 read by the reading device 45, the facility controller 30 causes the equipment controller 30 to operate the first dark room door 33 and the second dark room door 3 described above.
4 and the control contents of the white light 38 are switched. For example, when the photographic film 42 is for production, the first darkroom door 33 and the second darkroom door 34 are normally operated.
One of the two is always closed so that the operation is not accepted even if the white lamp 38 is to be turned on. When the photographic film 42 is for testing, the control contents are switched so that both the first dark room door 33 and the second dark room door 34 can be opened and the white lamp 38 can be turned on.

The photographic film 42 pulled out from the film supply section 43 is conveyed to a perforation section 47 which is also provided in the film processing chamber 27. In the punching portion 47, as shown in FIG.
As shown in, two perforations 23 are formed for each frame of the photographing screen 24 on one side in the width direction of the photographic film 42. Note that the actual punching portion 47 is, for example, 1
There are two devices for forming 0-frame perforations and 1 device for forming 5-frame perforations, which are combined according to the number of photographs of the photo film cartridge 2 to be manufactured. Perforate.

The photographic film 42 perforated by the perforations 23 is conveyed to the standard length cutting section 48 and processed into the photographic film strip 10. Standard length cutting unit 48
Then, the conveyed photographic film 42 is pre-exposed with a frame number, an identification mark, etc., measured to a prescribed length, and cut by a cutter 49. Further, at the time of this cutting, both ends of the photographic film strip 10 are respectively shaped into a front end portion 25 and a rear end portion 13 as shown in FIG.
Next, the photographic film strip 10 is sent to the sorting unit 50 with the rear end portion 13 as the head. The distribution unit 50 is a disc 51 that is rotatable in the distribution direction, and a guide 52 that serves as a passage for the photographic film strip 10 is attached to the disc 51. The photographic film strip 10 is arranged radially with respect to the disc 51. 4 transport paths 53, 54, 55,
Divide to 56.

The four transport paths 53, 54, 55, 56
Are connected to the inside of the film winding chamber 28 via a partition wall 58. In the partition wall 58, (A) of FIG.
Four openings 59 shown in (B) are formed, and the photographic film strip 10 is fed from the film processing chamber 27 to the film winding chamber 28 through the openings 59. Further, on the film processing chamber 27 side of each opening 59, the operation switch 6 connected to the equipment controller 30.
There is provided a light-shielding shutter 60 which is opened / closed by the shutter 4. The light blocking shutter 60 includes a light blocking block 61 provided on the outer periphery of the opening 59, a light blocking plate 62 slidably fitted in a groove 61 a formed in the light blocking block 61, and a light blocking plate 62.
Is composed of an air cylinder 63 that moves between a closed position that closes the opening 59 and an open position that opens the opening 59. The air cylinder 63 has a light blocking plate 62
Sensors 63a and 63b for detecting the position of are installed, and the detection result is sent to the input port 30a of the equipment controller 30.

The film winding chamber 28 is disposed adjacent to the film processing chamber 27 via a partition wall 58,
The light shielding cover 66 keeps the interior in a dark room.
The interior of the film winding room 28 is divided into three rooms, a first dark room 67, a second dark room 68, and a third dark room 69, which are shielded from light, and each of the dark rooms 67, 68, and 69 has a photographic film inside. Film winding devices 70, 71, 72 for winding the strip 10 inside the cartridge body 9 are arranged, and the transport paths 53, 54, 55 are connected. The transport path 56
Is a passage for discarding the photographic film 42 in which the perforations 23 have failed to be punched or the like, or the exposed photographic film 42, and is projected to the outside through the film winding chamber 28.

The first dark room 67, the second dark room 68, and the third dark room 69 are provided with doors 74 and 75 for maintenance, respectively.
76 is provided. As shown in FIGS. 4A and 4B, the door 74 will be described as an example. The door 74 is attached to the light shielding cover 66 by a hinge 77 so as to be openable and closable.
The handle 78 is used to open and close. Door 74
A packing 79 is disposed between the light shielding cover 66 and the light shielding cover 66 to shield the inside of the dark room 67 from light. Also, the door 74
A solenoid 80 that engages with the light shielding cover 66 and locks the door 74 at the closed position is attached to the. The solenoid 80 is controlled by the equipment controller 30, and the equipment controller 30 unlocks the door 74 only when the light-shielding shutter 60 of the dark room 67 including the door 74 is closed. As a result, the door 74 is not opened carelessly, and the photo film 42 in the film processing chamber 27 is not exposed to light through the transport path 53. Further, a sensor 81 is attached to the door 74, and the equipment controller 30 detects opening / closing of the door 74 by the sensor 81.

In the bright room outside the film winding room 28, the cartridge supply / exhaust devices 83, 84, 85 are arranged and connected to the first dark room 67, the second dark room 68 and the third dark room 69, respectively. ing. Patrone supply and discharge device 83
Numerals to 85 supply the assembled cartridge main body 9 to the film wrapping devices 70 to 72, and discharge the photographic film cartridge 2 with the photographic film strip 10 wound into the next packaging step. Also,
Between the cartridge feeding / discharging devices 83 to 85 and the film winding devices 70 to 72, light shielding rotors 86, 87, 88 capable of passing the cartridge body 9 while shielding the film winding chamber 28 are arranged. ing.

Further, as shown in FIG. 2, an alarm device 90 is connected to the output port 30b of the equipment controller 30. The alarm device 90 is, for example, a buzzer, a lamp, or the like, and issues a warning to the operator when the darkroom doors 33 and 34, the white lamp 38, the light-shielding shutter 60, and the door 74 are erroneously operated.

Next, the operation of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. In FIG. 1, first, in order to set the photographic film 42 in the film supply section 43 in the film processing chamber 27, the film processing chamber 27 is entered into the film processing chamber 27.
To enter the film processing chamber 27, the first darkroom door 3
The operation switch 36 is operated so as to open 3. The equipment controller 30 which receives the instruction from the operation switch 36 at the input port 30a outputs an open signal to the first darkroom door 33 from the output port 30b. Thereby, the first darkroom door 3
Since 3 is opened, the entry preparation room 35 is entered. After entering the entry preparation room 35, the first darkroom door 33 is closed. Then, since the entrance preparation room 35 also becomes a dark room, even if the second dark room door 34 is opened next time, light does not enter the film processing room 27, and it enters the film processing room 27 even during the manufacture of the photographic film strip 10. be able to.

If the second darkroom door 34 is opened when the operation of opening the first darkroom door 33 is performed,
The equipment controller 30 outputs an alarm signal to the alarm device 90 from the output port 30b, and the alarm device 90 warns the operator that the second darkroom door 34 is open with a buzzer, a lamp, or the like. The facility controller 30 also closes the second darkroom door 34 with a warning. Thus, the worker can enter the film processing chamber 27 by opening the first darkroom door 33 again. In this way, the first darkroom door 33 and the second darkroom door 34 are controlled by the facility controller 30 so that one of them is always closed, and therefore, even if the operator makes an error in entering the room, The photographic film 42 is not exposed unnecessarily.

The facility controller 30 performs the above control when the photo film 42 set in the film processing chamber 27 is for production, and the set photo film 42 is for test. At the time of, even if the second darkroom door 34 is opened, the first darkroom door 33 can be opened.

A photo film 42 is placed in the film processing chamber 27.
Is set, the photographic film is pulled out from the film supply section 43 and conveyed to the punching section 47. Perforated part 47
Then, as shown in FIG. 10, two perforations 23 are formed for each frame of the photographing screen 24 on one side in the width direction of the photographic film 42. The photographic film 42 perforated by the perforations 23 is conveyed to the standard length cutting section 48. In the fixed length cutting unit 48, the conveyed photographic film 42 is pre-exposed with a frame number or the like, measured to a prescribed length, and cut by a cutter 49 to form the photographic film strip 10. At the time of this cutting, both ends of the photographic film strip 10 are trimmed into the shapes of the front end portion 25 and the rear end portion 13 as shown in FIG.

The photographic film strip 10 has a rear end portion 1
3 is transferred to the distribution unit 50, and is distributed to the conveyance paths 53 to 55 by the rotation of the disk 51 and the guide 52. The photographic film strip 10 that has passed through the transport paths 53 to 55 is transported to the film winding devices 70 to 72.

The cartridge main body 9 comprises a light-blocking rotor 86-
By 88, the film is supplied from the cartridge supply / discharge devices 83 to 85 to the film winding devices 70 to 72. In the film winding devices 70 to 72, the lid member 6 of the cartridge body 9 shown in FIG. 9 is rotated to the open position. The photographic film strip 10 transported through the transport paths 53 to 55 is transported by the transport rollers installed in the film winding devices 70 to 72, and the rear end side 13 is the spool 5
Locked in. Then, the spool 5 is rotated to wind the photo film strip 10 around the shaft portion 14 of the spool 5. After all the photo film strips 10 have been rolled up, the lid member 6 is rotated to the closed position. The main body of the cartridge 9 that houses the entire photo film strip 10
The film-rolling devices 70-72 are again used by the light-shielding rotors 86-88 to transfer the film from the film cartridge supply / discharge devices 83-88.
It is sent to 85 and conveyed to the packaging process.

When the operator mistakenly operates the white lamp operation switch 39 so that the white lamp 38 is turned on during the manufacture of the photographic film cartridge 2 as described above, the equipment controller 30 activates the alarm device 90. Warning. Further, since the operation is not accepted, the photo film 42 in the film processing chamber 27 is not exposed to light. If the white light 38 is turned on due to some trouble, the white light sensor 40 detects the lighting of the white light 38, and the equipment controller 3
Inform 0. The facility controller 30 distributes the photo film 42 within the range irradiated with the white light 38 to the transport path 56 for disposal by the distribution unit 50. Therefore, the exposed photo film 42 is stored in the cartridge body 9. It is not transformed.

If, for example, the film winding device 70 out of the film winding devices 70 to 72 in the film winding chamber 28 fails, the photographic film strip 1 will be described.
By allocating 0 to the second dark room 68 and the third dark room 69, the film winding device 70 can be repaired even during the manufacture of the photographic film cartridge 2. When repairing the film winding device 70, the door 74 is opened. At this time, when the door 74 is opened, the light shielding shutter 60 is closed before the door 74 is opened so that the light does not enter the film processing chamber 27 through the transport path 53 and expose the photographic film 42.

When the light-shielding shutter operation switch 64 is operated, the equipment controller 30 drives the air cylinder 63 of the light-shielding shutter 60 as shown in FIG. The air cylinder 63 slides the light blocking plate 62 in the groove 61 a of the light blocking block 61 to close the opening 59.
Further, the equipment controller 30 confirms that the light shielding plate 62 closes the opening 59 with the sensor 63a, and unlocks the lock. Thereby, the door 74 can be opened by using the handle 78, and the film winding device 70 can be repaired. Further, even if the operator accidentally tries to open the door 74 without closing the light-shielding shutter 60, the door 74 is locked by the solenoid 80, so the photo film 42 in the film processing chamber 27 is inadvertently exposed to light. There is no end.

Further, even if the doors 74 to 76 are opened due to some trouble during the manufacture of the photographic film cartridge 2,
The equipment controller 30 detects the doors 74 to 7 by the sensor 81.
Since the open / closed state of 6 is known, the equipment controller 3
0 temporarily discards the operation of the apparatus and discards the exposed photo film 42. As a result, the exposed photographic film 42 is not commercialized.

The repair of the film winding device 70 is completed,
When restarting the production of Photo Film Patrone 2,
If the door 74 is not closed before opening the light-shielding shutter 60, the photo film 42 in the film processing chamber 27 will be exposed. Therefore, the facility controller 30 does not open the light-shielding shutter 60 even if the light-shielding shutter operation switch 64 is operated unless the sensor 81 confirms that the door 74 is closed.

[0040]

As described above, the light-shielding management method of the photographic film cartridge manufacturing line of the present invention allows the operator to erroneously operate the door, lighting device, light-shielding shutter, etc. so that the photographic film exposes the light. Since these operation states are collectively monitored, the operation can be invalidated, and the photographic film is not unnecessarily exposed. In addition, the control to invalidate the erroneous operation was made only when the photo film for production was set.Therefore, when testing the device, it is possible to work with the lighting device turned on or the door open. The work efficiency is improved. Furthermore, when the lighting device is accidentally turned on or the door is opened during the manufacture of the photo film cartridge, the photo film is automatically discarded, so that the photo film exposed to light can be commercialized. There is no.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a photographic film cartridge manufacturing apparatus.

FIG. 2 is a block diagram showing a control system of a photographic film cartridge.

3A and 3B are a sectional view and a front view of a main part showing a structure of a light-shielding shutter.

FIG. 4 is a cross-sectional view and a front view of a main part showing a structure of a door.

FIG. 5 is a flowchart showing a method for controlling a darkroom door.

FIG. 6 is a flowchart showing a method of controlling a white light.

FIG. 7 is a flowchart showing a control method when opening a door.

FIG. 8 is a flowchart showing a control method when opening the light shielding shutter.

FIG. 9 is an exploded perspective view showing the structure of a photographic film cartridge.

FIG. 10 is an explanatory view showing the shape of a photographic film strip.

[Explanation of symbols] 2 Photo film Patrone 9 Patrone body 10 Photo Film Strip 27 film processing room 28 film roll-in room 30 Equipment controller 33,34 Darkroom door 33a, 34a Sensor for darkroom door 38 White light 40 Sensor for white light 42 Photo Film 60 light-shielding shutter 74,75,76 doors

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03C 3/00 590 G03D 17/00

Claims (4)

(57) [Claims] 1. A light-shielding management method for a production line, wherein a plurality of dark chambers are light-tightly connected to each other through openings, and a photographic film cartridge is assembled while sequentially passing a photographic film into each of the dark chambers. Each of the openings is provided with a light-shielding shutter, and the opening / closing state of these shutters and the operating state of at least one of the darkrooms that are opened during maintenance or the operating state of the lighting device that is turned on during maintenance are collectively monitored. At the same time, when an operation for exposing the photographic film to any one of these is performed, the operation is invalidated, and a light shielding management method for a photographic film cartridge production line. 2. A photographic film set in the dark chamber is used for identifying whether the photographic film coated with an emulsion on a support is for production or for testing, and the photographic film set is for production. 2. When the operation of exposing the photo film to the door, the lighting device, and the light-shielding shutter is performed, the operation is invalidated, and the light-shielding management of the photo film cartridge production line according to claim 1. Method. 3. A line for manufacturing a photographic film cartridge in a dark room equipped with a lighting device that is turned on during maintenance, wherein a sensor for identifying lighting of the lighting device is provided in the dark room,
A light-shielding management method for a photographic film cartridge production line, which automatically discards a photographic film within a range exposed by the illuminating device when the sensor detects lighting of the illuminating device. 4. In a line for manufacturing a photographic film cartridge in a dark room having a door opened during maintenance, a sensor for identifying opening / closing of the door is provided in the dark room, and when the sensor detects the opening of the door. , A method of shading control of a photo film patrone production line, characterized by automatically discarding photo films in a dark room.