JPH0822084A - Photographic film feeding device - Google Patents

Abstract

PURPOSE:To prevent the damage of an engaging part between photographic film and a cartridge by recognizing a position where a final image frame should be recorded and inhibiting the final image frame from being drawn out over a specified position in the case of drawing out the photographic film without separating the film from the cartridge. CONSTITUTION:As soon as the final image frame is recognized based on detection signals from a perforation sensor 32, a CCD sensor 74 and a bar code sensor 30 and the final image frame 14A is processed to be printed at a printing position, the negative film 14 is rewound to the cartridge 16, so that the negative film 14 is printed in a state where it is not separated from the cartridge 16. In such a case, unnatural force is not exerted on the engaging part between the spool of the cartridge 16 and the negative film 14, thereby avoiding the damage thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with perforations provided in advance at a predetermined interval for a single image frame area so that each image has a constant relative position with respect to the perforation. The photographic film photographed in (1) is loaded into a cartridge that is wound in layers and the inner end of which is engaged with the spool, and the outer end of the layered photographic film is pulled out from this cartridge and conveyed. The present invention relates to a photographic film transporting device for sequentially feeding the image frames so that the image frames are sequentially positioned at predetermined positions.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
A 135 size negative film or the like is provided with perforations (rectangular holes) at a predetermined pitch in advance.
This perforation is fitted with a sprocket or the like when it is loaded in the camera to give a driving force to the negative film, and it corresponds to a contactor or the like provided on the camera side to determine whether the negative film is conveyed correctly. It has a role of detecting whether or not. In the transportation by the camera, there are various initial positions, that is, the initially loaded positions, so that the relative position between the perforation position and the image frame position to be photographed is indefinite.

By the way, when a photographed photographic film is printed by, for example, a printing apparatus, the negative film is removed from a cartridge called a cartridge (the cartridge is discarded when the film is separated from the negative film), and the negative film is used alone. Alternatively, a plurality of negative films are connected and the image frames are sequentially fed so that the image frames are sequentially positioned at the printing position.

The negative film is conveyed in only one direction, and the negative film having undergone the baking process is sent out from the side opposite to the sending side with respect to the printing position. Further, the negative film that has undergone the printing process is cut into a predetermined number of frames (usually 6 frames), is stored in a negative sheet in a piece negative state, and is returned to the customer.

In recent years, it has been proposed to provide a magnetic recording layer on a photographic film and record information at the time of photographing or information at the time of printing on this magnetic recording layer. In such a photographic film, the magnetic recording layer is not cut every predetermined number of frames even if it is developed and printed so that the magnetic recording layer is not divided. Further, the developing process and the printing process are performed without separating the cartridge from the cartridge, and the cartridge is rewound into the original cartridge. Therefore, when returning to the customer,
It is considered that the cartridge is returned in the state of being housed in the cartridge.

As a result, it is possible to prevent the magnetic recording layer from being divided and prevent the magnetic recording layer from being damaged and being unable to read and write information.

By the way, the cartridge and the inner end portion of the photographic film wound in layers in the cartridge are
It is temporarily fixed so that the photographic film can be removed from the cartridge if necessary. This is because when processing a large amount of photographic film, it is more efficient to process by connecting a plurality of photographic films.

However, when the photographic film is printed without being removed from the cartridge, if the position of the last frame cannot be specified, the photographic film is successively conveyed in the drawing direction of the photographic film and temporarily fixed to the rear end of the photographic film and the cartridge. Unreasonable force is applied to the part, resulting in damage to the temporary fixing part.

In consideration of the above facts, the present invention recognizes the position where the final image frame should be recorded when the photographic film is pulled out without removing it from the cartridge, and the final image frame exceeds the predetermined position. It is an object of the present invention to obtain a photographic film transporting device capable of preventing damage to the engaging portion between the photographic film and the cartridge by prohibiting it from being pulled out.

[0010]

According to a first aspect of the present invention, a predetermined number of perforations are provided in advance at a predetermined interval for one image frame area, and each image has the perforations and the respective perforations. A cartridge containing the photographic film photographed so that the relative position is constant is wound in layers and the inner end is engaged with the spool, and the outer end of the layered photographic film is loaded from this cartridge. A transporting device for a photographic film that pulls out a portion of the photographic film and transports the photographic film in a longitudinal direction so that the image frames are sequentially positioned at predetermined positions, the transporting means transporting the photographic film along a longitudinal direction, and the perforation. Detecting a perforation detecting sensor, and a perforation position detected by the perforation detecting sensor On the basis of this, an image frame discriminating means for discriminating whether or not an image frame exists at a position where an image should be recorded, and a specific mark which is previously given to a photographic film and which specifies a position where a final image frame should be recorded are detected At least one of the mark detection means is provided, and the position of the final image frame is recognized by one or a combination of perforation presence / absence / count value, image frame presence / absence / count value, and presence / absence of a specific mark. And a prohibiting means for prohibiting the conveyance of the photographic film from the cartridge by the conveying means so that the final image frame recognized by the recognizing means does not exceed a predetermined position.

[0011]

According to the first aspect of the present invention, the position of the final image frame is determined by one or a combination of perforation presence / absence and count value, image frame presence / absence and count value, presence / absence of a specific mark. The photographic film is not pulled out from the cartridge more than necessary to prevent the photographic film from being conveyed by the conveying means so that the final image frame does not exceed a predetermined position by the prohibiting means. The engagement part between the cartridge and the cartridge is not damaged.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a camera 10 and a photo printing apparatus 12 according to this embodiment. The camera 10 is equipped with a cartridge 16 on one side of which the negative film 14 is wound around a spool 16A and accommodated therein. Camera 1
At 0, a drive reel 22 driven by a motor 20 connected to the control unit 18 is provided. The negative film 14 is frame-fed by locking the leading end of the negative film 14 to the drive reel 22.

As shown in FIG. 1, the negative film 14 is provided with two perforations 24A and 24B for each image frame 14A. The perforations 24A and 24B are preliminarily bored, and are used for positioning when mounted on the camera 10, for example. Therefore, each image frame 1
4A and two corresponding perforations 24
The relative positions of A and 24B always match.

Two perforations 24A,
24B are located at both ends of the corresponding image frame 14A in the negative film transport direction.

Also, perforations 24A and 24B
A magnetic recording layer 25 is provided at one end in the width direction of the negative film 14 provided with. The magnetic recording layer 25 is coated on the entire surface of the negative film 14, and as shown in FIG. 1, the actual recording area is a short strip portion.

On the magnetic recording layer 25, shooting information (shutter speed, aperture, shooting date, shooting location, etc.) of the camera 10 is recorded.

Further, two kinds of optical information are recorded on the end of the negative film 14 opposite to the end in the width direction where the perforations 24A and 24B are provided. The first optical information is a bar code 14C indicating an ID number, a frame number, etc., which has been pre-printed at the manufacturing stage of the negative film 14. The second optical information is, for example, the size designation mark 14D that is printed to indicate the printing size (AL size, AH size, AP size) of the printing paper when the image is taken by the camera. The AL size is the size when finished with normal simultaneous printing with an aspect ratio of 5: 3.5, and the AH size is the size that has been adopted as a high-definition television size with an aspect ratio of 16: 9 in recent years. The AP size is a size in which two AL sizes having an aspect ratio of 10: 3.5 are arranged side by side. The size designation mark 14D is defined by the number of black circle-shaped marks, for example, and can be visually identified.

The size of the image frame 14A is constant regardless of the size designation mark 14D, and it is possible to deal with each size by changing the print magnification. Therefore, the size of the same image frame 14A can be changed.

As shown in FIG. 2, a photoelectric sensor 29 is installed on the conveyance path of the negative film 14 of the camera 10. The photoelectric sensor 29 is provided with two detection points, which correspond to the paths provided with the perforations 24A and 24B, respectively, and a light projecting section and a light receiving section are provided so as to straddle the front and back of the negative film 14. , The photoelectric sensor 29 when the light receiving section receives the light beam from the light projecting section.
Outputs a high level signal to the control unit 18.

The pitch dimension of the detection points of the photoelectric sensor 29 is
The perforations 24A and 24B provided on the negative film 14 have the same pitch size as two adjacent ones. Here, when the negative film 14 passes between the light projecting section and the light receiving section and two approaching perforations 24A and 24B are detected at the same time, a predetermined photographing area is positioned at a predetermined position. It has become so. It should be noted that this photographing area becomes the image frame 14A after photographing and development.

A magnetic head 28 is provided corresponding to the magnetic recording layer 25 so that the date and time of photographing, the place of photographing, the shutter speed, the aperture value and the like can be magnetically recorded.

The negative film 14 which has been photographed is rewound into the cartridge 16 again, taken out from the camera 10, and brought into the laboratory through the DPE store. In this lab, the negative film 14 is developed and placed at a predetermined position of the photo printing device 12.

As shown in FIG. 2, the photo printing apparatus 12
The negative carrier 54 is disposed on the optical axis of the light source 52 that is irradiated during printing. As shown in FIG. 1, the negative film 14 has a predetermined transport path 54A for the negative carrier 54.
Is being guided to.

The negative carrier 54 is provided with a driving roller 58A (see FIG. 1) which is rotated by the driving force of a driving unit 58 connected to the control device 56, and the negative film 14 is moved in the direction of arrow A in FIG. To be transported to. Further, the negative carrier 54 is provided with a solenoid 60, and the negative film 14 can be clamped and pressed in the opening 55A (see FIG. 1) of the mask 55 at the printing position by a signal from the control device 56.

C is provided between the light source 52 and the negative carrier 54.
Each MY filter 62 is interposed so that the MY filters are projected and retracted on the optical axis according to the exposure amount of each color.

The light rays that have passed through the negative film 14 are irradiated onto the photographic printing paper 66 via the lens 64, and the image is printed on the photographic printing paper 66. A shutter 68 is interposed between the photographic paper 66 and the lens 64,
A signal from the control device 56 is used to retract from the optical axis during exposure.

As shown in FIG. 1, the perforations 24 on the transport path 54A of the negative film 14 are provided.
A perforation sensor 32 is provided on the trajectories of A and 24B. Therefore, the perforation 2 is detected by the detection signal of the perforation sensor 32.
4A or 24B can be detected.

By the way, the negative film 14 of the present embodiment.
Is a perforation 24A, 2 in the camera 10.
Since 4B is used as a reference for transport, positioning, and shooting,
The relative positions of the perforations 24A and 24B and the image frame 14A are always the same. Therefore, the position of the image frame 14A can be recognized by detecting the perforations 24A and 24B.

That is, as shown in FIG. 1, a predetermined distance upstream from the position of the perforations 24A and 24B corresponding to the image frame 14A positioned at the printing position (the opening 55A of the mask 55) (in the present embodiment, the printing position). The detection point of the perforation sensor 32 is provided at a position (between the first frame and the second frame before the image frame in FIG.

After the perforations 24A and 24B are detected by the perforation sensor 32, the perforations 24A and 24B are stopped at a predetermined distance, and the image frame 14A corresponding to the perforations 24A and 24B is positioned at the printing position.

Further, this perforation sensor 32
It is possible to discriminate the area in which the final image frame is to be recorded, by the count value of the perforations 24A and 24B detected in. That is, for example, when the number of shootable images (the number of shots taken) is constant or when the number of shootable images is recognized by the setting, the perforations 24A and 24B are counted to correspond to the final image frame. Perforation 24
Identifying A and 24B is easy.

Further, the perforation sensor 32
Further, a linear CCD sensor 74 is provided on the upstream side (in this embodiment, three frames before the image frame 14A at the printing position). The CCD sensor 74 can detect the density of the negative film 14. The density of the negative film 14 is obviously different between the image printed portion and the base portion.

For example, it can be determined that a portion having a high transmission density is an image area and a portion having a low transmission density is a base portion. In this embodiment, the density can be detected by the CCD sensor 74 two frames before the printing position, and it can be determined whether or not the image actually exists in the area where the image is recorded. Therefore, if it is determined that there is no image in the area where the image is recorded, it is determined that the last determined image is recorded in the final image frame area on condition that the image frames 14A are continuously provided. Can be recognized.

Further, between the CCD sensor 74 and the printing position, and at the boundary between the two image frames 14A (in this embodiment, the second and third frames before the image frame at the printing position). The magnetic head unit 76 is provided in the space. The magnetic head unit 76 is equipped with a head for recording information at a predetermined position on the magnetic recording layer 25 while the negative film 14 is being conveyed and for reading information from the magnetic recording layer 25. This magnetic head unit 7
In No. 6, when the negative film 14 is stopped (when one image frame 14A is positioned at the printing position), the recording position is a position deviated from the magnetic recording layer 25 (actual recording area). Are arranged as follows, 1 for each frame advance
Each frame can pass over the magnetic recording layer 25.

If a symbol indicating that the final image frame is to be recorded is previously recorded on the magnetic recording layer 25 in the camera 10 or in the manufacturing stage, the final image frame is read by reading this symbol. The position of can be recognized.

On the other hand, the magnetic recording layer 25 of the negative film 14
A bar code sensor 30 is arranged at the end portion on the side opposite to the side where the is provided. This barcode sensor 3
In No. 0, a light projecting portion and a light receiving portion are arranged so as to sandwich the negative film 14, and light received from the light projecting portion and transmitted through the negative film 14 is received by the light receiving portion. Therefore, by performing the reading while the negative film 14 is being conveyed, it is possible to recognize the presence or absence and the width of the bar of the bar code 14C. In addition, this barcode sensor 3
At 0, the size designation mark 14D can also be detected.

The mounting position of the bar code sensor 30 is
It is determined based on the mounting position of the perforation sensor 32, and the perforations 24A, 24B
The bar code sensor 30 is arranged so that the reading start position of the bar code sensor 30 is located at the head of the bar code 14C at the same time when the two are simultaneously detected.

The bar code 14C is provided in advance in each area where an image is to be recorded at the manufacturing stage. If the bar code 14C is not detected, the bar code 14C detected last is the final one. It can be recognized that it corresponds to an image frame.

The operation of this embodiment will be described below. When the photographing is completed and the negative film 14 (cartridge 16) is taken out from the camera 10 and the DPE store is requested to print, the DPE store conveys the film to the lab. To place. In the photographic printing apparatus 12, when the cartridge 16 is loaded and the leading end of the negative film 14 is drawn out, the negative film 14 starts to be conveyed. That is, the drive unit 58 is driven by the control of the control device 56, and the negative film 14 is conveyed in the direction of arrow A in FIG. 1 by the rotation of the drive roller 58A.

At the time when the front side perforation 24A of the image frame 14A and the rear side perforation 24B one frame ahead are simultaneously detected during conveyance, the CCD sensor 74 is detected.
When the image frame 14A is detected by, the image frame is positioned at the printing position at the third step. Since the transport distance for these three steps is predetermined, the image frame 14
A can be easily positioned.

When the predetermined image frame 14A reaches the printing position, the solenoid 60 is driven and the negative film 14 is nipped and pressed at the printing position.

In this state, the shutter 68 is opened and C
By making each of the MY filters 62 appear and disappear on the optical axis according to the exposure amount, the light rays that have passed through the negative film 14 are irradiated onto the photographic paper 66 through the lens 64, and the image is printed on the photographic paper 66.

Next, when the conveyance is restarted and the images are continuously recorded, the printing process is performed while the frame feeding is repeated step by step. When the printing process is finished, that is, when the printing process of the final image frame 14A is finished, the winding on the cartridge 16 is executed.

By the way, when recognizing the final image frame 14A, for example, all the lengths of the negative film 14 are uniform,
If the number of images that can be taken is constant, the number of printing processes and the number of frame feeds may be counted.
May have different lengths, or may stop shooting and rewind to the cartridge 16 without actually shooting to the end.

Therefore, it is necessary to recognize the final image frame by some means. The procedure for recognizing the final image frame 14A will be described below.

Since the presence / absence of an image is always detected by the CCD sensor 74, if the presence / absence of an image is detected and it is determined that there is no image in the area where the image is to be recorded, the image frame one frame ahead is detected. 14A is recognized as the final image frame.

In the above description, when one frame is fed in advance, the image frame 14A that is one frame ahead of the idle feed area may be determined to be the last image frame. When it is determined that there is no image, the image frame 14A that is two frames ahead is recognized as the final image frame.

The presence or absence of an image is detected by the CCD sensor 74, and even if the simultaneous detection of the perforations 24A and 24B has passed for a predetermined time (time for carrying one frame) after it is determined that there is no image in the area where the image should be recorded. When it is not possible, the image frame finally determined by the CCD sensor 74 to be present is recognized as the final image frame.

The presence or absence of an image is detected by the CCD sensor 74, it is determined that there is no image in the area where the image is to be recorded, and the image frame 1 is displayed on the barcode sensor 30.
After the bar code 14C corresponding to 4A has passed, if the next bar code 14C cannot be detected within a predetermined time (time for carrying one frame), the image frame finally judged by the CCD sensor 74 to be the last one. Recognize as an image frame.

When the perforation sensor 32 detects the perforations 24A and 24B at the same time, and the next perforations 24A and 24B cannot be detected even after a lapse of a predetermined time (time for carrying one frame), the last detected perforation 24A is dealt with. The image frame 14A to be recognized is recognized as the final image frame.

In the above, since the perforations 24A and 24B corresponding to the final image frame may not exist, the perforation sensor 32 detects the perforations 24A and 24B at the same time, and then 2
The next perforation 2 even after the time for frame transfer has passed
When 4A and 24B cannot be detected, the image frame 14A corresponding to the last detected perforation 24A is recognized as the final image frame.

When the perforations 24A and 24B are simultaneously detected by the perforation sensor 32, and the next perforations 24A and 24B cannot be detected even after a predetermined time (time for carrying one frame) elapses, and the image is displayed on the barcode sensor 30. When the next bar code 14C cannot be detected within a predetermined time (time for carrying one frame) after the bar code 14C corresponding to the frame 14A has passed, the last detected perforation 24
The image frame 14A corresponding to A is recognized as the final image frame.

The presence or absence of an image is detected by the CCD sensor 74, and even if the simultaneous detection of the perforations 24A and 24B has passed for a predetermined time (time for carrying one frame) after it is determined that there is no image in the area where the image should be recorded. If not, and the image frame 1 is displayed on the barcode sensor 30.
If the next bar code 14C cannot be detected within a predetermined time (time for carrying one frame) after the bar code 14C corresponding to 4A has passed, the image frame 14A corresponding to the last detected perforation 24A is finalized. Recognize as an image frame.

After the barcode 14C corresponding to the image frame 14A passes over the barcode sensor 30,
When the next bar code 14C cannot be detected even after the lapse of a predetermined time (time for carrying one frame), the image frame 14A corresponding to the detected bar code 14C is finally recognized as the final image frame.

In the above (1) to (2), two kinds of discrimination are used together, or the same discrimination is repeated twice. By thus performing the combination of two types of discrimination or repeating the same discrimination, the following erroneous determination is made. Can be prevented.

That is, in the case of discriminating only the image density,
It is difficult to determine the presence or absence of an image when the transmission density of the image is low, such as in a night view, a starry sky, fireworks, or ultra-underexposure shooting. Also,
After the final image frame, there may be light fog,
There is a risk of misjudging that there is an image.

On the other hand, perforations 24A and 24B
In the case of making a distinction only by the end, the edge portion in the width direction of the negative film 14 after the final image frame may be scratched and may be erroneously judged as perforation.

Further, in the case of discriminating only by the bar code 14C, if light is covered after the recorded portion of the bar code 14C or after the final image frame, the signal may not be read and the judgment may be erroneous.

As described above, in this embodiment, the perforation sensor 32 for detecting the perforations 24A and 24B, the CCD sensor 74 for detecting the presence or absence of an image, and the bar code 14C for detecting the bar code 14C previously recorded on the negative film 14 are detected. The final image frame is recognized based on the detection signal of the sensor 30, and the negative film 14 is immediately rewound into the cartridge 16 immediately after the final image frame 14A is printed at the printing position. When the printing process is performed without removing the film 14, it is possible to apply no unreasonable force to the engaging portion between the spool 16A of the cartridge 16 and the negative film 14,
It is possible to avoid damage and the like.

In the present embodiment, the photographic printing device 12 is described as an example of the photographic film transporting device, but the invention can be applied to other photographic film transporting devices such as a tester.

In this embodiment, information (perforations 24A, 24A) previously recorded on the negative film 14 is recorded.
B, the image frame 14A, and the barcode 14C) are used to recognize the final image frame 14A. For example, by recording in advance the number of shots on the magnetic recording layer 25 and reading this information. The final image frame 14A can be easily recognized only by counting the number of printing processes or the number of frame feeds.

Alternatively, the tension of the negative film 14 may be detected, and when the tension becomes equal to or more than a predetermined value, it may be determined that the film is in the fully drawn state, and the film may be rewound.

Furthermore, the camera 10 uses the final image frame 14A.
A mark indicating that it is the final image frame 14A may be newly added in the vicinity of, or a mark for specifying the final image frame 14A may be added before and after the development processing. An optical mark may be used before the development, and a mark such as a cutout may be added after the development.

[0064]

As described above, the photographic film transporting apparatus according to the present invention recognizes the position where the final image frame should be recorded when the photographic film is pulled out without being removed from the cartridge, and the final image frame is recorded. This has an excellent effect that it is possible to prevent the frame from being pulled out beyond a predetermined position and prevent damage to the engaging portion between the photographic film and the cartridge.

[Brief description of drawings]

FIG. 1 is a plan view showing a conveyance state of a negative film on a negative carrier according to this embodiment.

FIG. 2 is a schematic configuration diagram of a photographic printing apparatus and a camera according to this embodiment.

[Explanation of symbols]

 12 Photographic Printing Device 14 Negative Film 14A Image Frame 14C Bar Code 24A, 24B Perforation 25 Magnetic Recording Layer 30 Bar Code Sensor 32 Perforation Sensor 74 CCD Sensor 76 Magnetic Head Unit

Claims (1)

[Claims] 1. A photographic film having perforations provided at a predetermined interval and in a predetermined number for one image frame area, and each image is photographed so that the relative position of the perforations is constant. Is loaded into a cartridge which is wound in layers and accommodates the inner end in a state of being engaged with the spool, and the outer end of the layered photographic film is pulled out from this cartridge and conveyed.
A transport device for a photographic film that sequentially feeds the image frames so as to be positioned at a predetermined position, wherein the transport means transports the photographic film in a longitudinal direction, a perforation detection sensor for detecting the perforation, An image frame discriminating means for discriminating whether or not an image frame exists at a position where an image should be recorded based on the perforation position detected by the perforation detection sensor, and a final image frame recorded in advance on a photographic film is recorded. At least one of mark detecting means for detecting a specific mark for specifying a power position is provided, and one or more of each condition of perforation presence / absence and count value, image frame presence / absence and count value, presence / absence of specific mark are provided. Depending on the combination, it is possible to recognize the position of the final image frame. Means and the recognized last image frame recognition means photographic film transfer apparatus having a prohibiting means for prohibiting the pull-out direction conveyance of the photographic film from the cartridge by the conveying means so as not to exceed a predetermined position.