JPH0915744A - Magnetic head inspecting method and film carrier - Google Patents

Abstract

PURPOSE: To inspect whether a recording head and a reading head are appropriately actuated or not. CONSTITUTION: A film carrier is executed when pulling-out of a negative film from a cartridge is started (step 100) and first inspection data is recorded in an inspecting track by a recording head (step 102, 104). Then, when the negative film is rewound (confirmed in step 106), the data recorded in the inspecting track is read by a reading head (step 108, 110), and the read data is compared with the inspection data (step 112). Whether the recording head and the reading head appropriately actuated or not is determined based on the result of this comparison (step 114), and when parts of the data are different from each other, displaying is performed so as to urge cleaning of the recording head and the reading head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film carrier for sequentially arranging image frames of a photographic film at predetermined printing positions during printing processing, and more particularly to recording magnetic information on a photographic film and recording magnetic information on the photographic film. The present invention relates to a film carrier having a magnetic head for reading information and a method for inspecting a magnetic head provided on the film carrier.

[0002]

2. Description of the Related Art Recently, a magnetic recording layer has been provided at a predetermined position of a non-image portion of a photographic film (for example, a negative film),
There has been proposed a photographic system that records information on the image of each frame, information at the time of printing, and the like together with information about the negative film, and uses the information recorded at the time of printing. In this photographic system, the negative film that has undergone the development processing is not cut into a piece negative by cutting it into a plurality of frames (for example, 6 frames), but is rewound into a cartridge again.
The recorded magnetic information is not damaged.

In order to use the information recorded on such a negative film at the time of printing, it is necessary for the film carrier to have a function of recording and reading magnetic information. Various film carriers having a head have been proposed.

By the way, in order to perform accurate recording and reading of magnetic information, it is necessary to bring the magnetic head into close contact with the magnetic recording layer of the negative film. As a result, dust or dirt on the surface of the negative film becomes magnetic. It adheres to the head and stains the surface, making it difficult to accurately record and read magnetic information. Therefore, for example, it is necessary to provide a read head that reads the data recorded by the recording head and inspects whether the recording head is operating properly.

[0005]

However, in the film carrier, it is necessary to feed the image recorded on the negative film frame by frame in order to print it on the photographic paper, and the mounting position of the magnetic head or the recording head is limited. Furthermore, if a read head for recording data on the recording head and inspecting the data is provided, the number of parts increases, and if magnetic information is recorded during frame advance, the mounting position of this read head for inspection is also restricted. The film carrier becomes larger than necessary.

The present invention has been made in consideration of the above facts, and a magnetic head for inspecting whether or not a recording head and a reading head can accurately record and read magnetic information without providing a large number of magnetic heads. The purpose of the invention is to propose an inspection method and a film carrier.

[0007]

A method of inspecting a magnetic head according to the present invention is a method of reciprocating a photographic film contained in a cartridge in the direction of pulling out from the cartridge and in the winding direction, while conveying the photographic film in one direction. A recording head for recording magnetic information on the magnetic recording layer of the photographic film and a read head for reading the recorded magnetic information, which are provided on a film carrier for positioning the recorded image at a predetermined exposure position A method of inspecting a magnetic head for inspecting operation, comprising recording inspection data preset in the magnetic recording layer by the recording head when the photographic film is transported in the forward path, and recording the recorded data on the return path of the photographic film. It is characterized in that it is read by a reading head at the time of conveyance and compared.

The film carrier according to the present invention is capable of reciprocally conveying a photographic film along a conveyance path, and at the time of either one of the conveyances, a conveyance positioning means for frame-advancing the photographic film and positioning it at a predetermined exposure position; A read head which is provided on the path and reads the magnetic information recorded on the magnetic recording layer when the photographic film is conveyed; and an arbitrary position at the exposure position on the conveying path upstream of the exposure position in the backward conveying direction. A recording head that is arranged between adjacent image frames when the image frames are positioned and is capable of recording magnetic information on the magnetic recording layer of the photographic film; Magnetic head control means for reading the magnetic information and recording the magnetic information by the recording head at the time of the backward transportation, An inspection means for recording inspection data on a predetermined magnetic recording layer at the time of forward transportation and reading the inspection data recorded at the time of backward transportation and comparing with the recorded inspection data. Characterize.

[0009]

According to the magnetic head inspection method of the present invention, inspection data is recorded at a predetermined position of the photographic film when the photographic film is conveyed in the forward direction, and is recorded when the photographic film is conveyed in the backward direction. The read data is read, and it is determined whether both the recording head and the reading head can operate properly.

For example, when it becomes impossible to record or read accurate magnetic information due to stains on either the recording head or the reading head, the read data is different from the recorded inspection data. It can be determined that the recording head and the reading head need to be cleaned.

In the film carrier of the present invention, the magnetic information recorded on the magnetic recording layer of the photographic film is read by the reading head during the forward transportation, and the magnetic information is recorded by the recording head during the backward transportation.

The magnetic head inspecting means records the inspection data preset at a predetermined position of the magnetic recording layer by the recording head when the photographic film is conveyed in the forward path, and reads the data by the reading head in the backward path. I do. By comparing the data read in this way with the inspection data, it can be confirmed whether both the recording head and the reading head are operating properly, and a reading head for inspecting the operating state of the recording head can be used. It is not necessary to provide it, and the operating state of the read head can be confirmed.

A recording head by the processing of photographic film,
Contamination gradually adheres to the read head, and the adhered dirt gradually affects the operations of the recording head and the read head. By inspecting such a recording head and a reading head each time a photographic film is processed or a predetermined amount of photographic film is processed, magnetic information is recorded on the photographic film and the recorded magnetic information is read. Can be done accurately. In particular, if the recording head and the reading head are inspected each time a photographic film is processed, even if any malfunction occurs, this malfunction can be detected.

When the photographic film pulled out from the cartridge is rewound (during backward transport), one of the image frames of the photographic film is placed at the exposure position, and when the photographic film is placed at the exposure position, the two photographic films are moved downstream in the backward transport direction. It is sufficient to arrange the storage head so that it is between adjacent image frames,
When the photographic film is pulled out of the cartridge (forward transport), the read head is placed so that it is located between the adjacent image frames on the upstream side of the opening in the forward transport direction (downstream of the backward transport direction). Good.

Thus, the operating states of both the recording head and the reading head can be inspected without providing a magnetic head for inspection, and it is not necessary to provide a large number of magnetic heads, and a compact film carrier can be obtained. be able to.

[0016]

1 to 3 show a film carrier 10 applied to this embodiment. The film carrier 10 is attached to a photographic printer such as a printer section of a printer processor (not shown),
It is used to print the image recorded in each image frame of "Negative film 12" as an example on the photographic paper. The photographic paper on which the image is printed is color developing, bleach-fixing and rinsing (washing). A series of processes such as drying, etc. are performed, and each printed image is cut and finished as a photographic print.

As shown in FIGS. 5A and 5B, the negative film 12 mounted on the film carrier 10 is composed of a reader portion 14, an image recording portion 16 and a tail portion 18. . The negative film 12 has the tail portion 18 locked to the spool shaft 22 of the cartridge 20, is wound in layers on the spool shaft 22, and is accommodated in the cartridge 20. Further, in the image recording unit 16, image frames 16A on which images are recorded by photographing or the like are formed at predetermined intervals.

Further, in the image recording portion 16 of the negative film 12, perforations 24 are formed at one end in the width direction at predetermined intervals along the longitudinal direction. Each perforation 24 corresponds to the image frame 16A, and the position of the image frame 16A can be accurately known from the position of these perforations 24. In addition, on the image recording unit 16 side of the reader unit 14 and the tail unit 18, an around perforation 14A,
18A are provided respectively, and further, a detachment perforation 18B indicating the rear end position of the negative film 12 is formed in the tail portion 18, and a notch 14B is formed in the tip portion of the leader portion 14.

On the other hand, magnetic recording layers for recording magnetic information are provided at both ends in the width direction of the negative film 12, and magnetic information is provided at both ends in the width direction from the reader portion 14 to the tail portion 18. The magnetic tracks 26 for recording magnetic information are provided between the perforations 24 adjacent to each other in the image recording unit 16.
It is used as On the magnetic track 26, information about the negative film 12 and information at the time of shooting the image of each image frame 16A are recorded, and it is possible to record the exposure condition and the like when printing each image on photographic paper. Has become. A substantially transparent magnetic recording layer may be provided on the entire surface of the negative film 12, and a part of the magnetic recording layer may be used as the magnetic track 26.

As shown in FIGS. 1 to 3, the film carrier 10 on which the negative film 12 is mounted includes a pedestal 30, a cartridge loading section 32, and a film accommodating section 34.
And a cover 36 that covers the upper surface of the pedestal 30. Further, on the upper surface of this pedestal 30, the cartridge loading section 32
A transport path 38 is formed to connect the film storage section 34 and the film storage section 34. The transport path 38 is usually covered with the cover 36.

The cartridge 20 containing the developed negative film 12 is mounted in the cartridge loading section 32, and the spool shaft 22 is rotated by the drive of the motor 40 (see FIG. 2) to drive the negative film 12 from the cartridge 20. Of the negative film 12 sent out by the reverse rotation drive of the motor 40 to the spool shaft 22.
The cartridge 20 is wound up and stored in the cartridge 20.

The transport path 38 is provided with feed rollers 42A to 42D provided in pairs on the pedestal 32 and the cover 36, and holds the negative film 12 by driving the motor 44 (see FIG. 2) to remove the negative film 12 from the cartridge 20. The sheet is conveyed in the pull-out direction (arrow A direction in the drawing) and the feeding direction into the cartridge 112 (direction opposite to the arrow A direction).

Further, as shown in FIG. 3, in the film accommodating portion 34, the negative film 12 fed through the conveying path 38 is guided by guides 46 and 48 along the peripheral surface of the winding shaft 50, and is guided. The negative film 12 is sandwiched between the winding shaft 50 and the winding roller 50 by the guide rollers 52 provided at the tips of the rolls 46 and 48 and wound up. Thereby, the negative film 12 is temporarily accommodated, and even if the negative film 12 has a curl or the like, it is prevented from being entangled and damaged.

In the cartridge loading section 32, it is confirmed whether or not the negative film 12 contained in the cartridge 20 has been developed, and then the negative film 12 is sent out to the conveying path 38, and the undeveloped negative film 12 is removed. It prevents you from accidentally pulling it out and exposing it.

The film carrier 10 has a conveying path 3
An opening 54 for printing is formed in the center of the image frame 8, and each image frame 16A of the negative film 12 is positioned in the opening 54 in order. A light beam emitted from a light source (not shown) emitted from below the pedestal 30 passes through the opening 54, passes through the positioned negative film 12, and is imaged on a photographic paper by an optical system (not shown). As a result, the image recorded on the negative film 12 is printed on the printing paper. A negative pressure-bonding plate 56 is provided between the pedestal 30 and the cover 36, and when the negative film 12 is positioned with respect to the opening 54, the periphery of the image on the negative film 12 is made uniform with the pedestal 30. To prevent distortion of the image printed on the photographic paper.

On the other hand, as shown in FIGS. 2 and 3, the film carrier 10 is provided with a magnetic head portion 58 and a sensor portion 60. The magnetic head portion 58 includes a recording head 62 for writing magnetic information and a reading head 64 for reading the written magnetic information, and is attached to the cover 36 so as to face both end portions in the width direction of the transport path 38.
In addition, the pedestal 30 includes a recording head 62 and a reading head 6.
4 is provided with a backup roller 66 facing each other, and the magnetic recording layers at both ends in the width direction of the negative film 12 conveyed along the conveyance path 38 are formed on the recording head 62.
And the read head 64.

As shown in FIG. 6, the magnetic head portion 58.
Is arranged between the opening 54 of the transport path 38 and the cartridge loading section 32, and when any one of the image frames 16A of the negative film 12 is positioned in the opening 54, the opening 5
4 is mounted so as to be between the image frames 16A adjacent to each other on the cartridge loading portion 32 side (left side of the paper surface of FIG. 6) of No. 4 and the read head 64 has the opening 5
It is attached to the 4 side.

Therefore, when the negative film 12 is frame-fed, the magnetic track 26 of the negative film 12 moves at a constant speed while being in contact with the recording head 62, and magnetic information can be recorded on the magnetic track 26. I am trying to become. Further, when the negative film 12 is continuously conveyed at a constant speed without frame-by-frame feeding, the read head 64 can read the magnetic information recorded on the magnetic track 26.

As shown in FIG. 3, the sensor section 60 includes
It is provided between the opening 54 and the magnetic head portion 58, and is provided with a plurality of sensors 72 and 74 each constituted by a light projecting portion 68 and a light receiving portion 70. These sensors 72,
As for 74, one of the light projecting section 68 and the light receiving section 70 is provided on the cover 36, and the other is provided on the pedestal 30.

As shown in FIGS. 2 and 6, the sensor 7
2 are arranged so as to face both ends of the conveyance path 38 in the width direction, and the perforations 24 and the around perforations 14A formed on the negative film 12 are provided.
18A is detected. When optical information such as a bar coded DX code is recorded on the negative film 12, the optical information can be read. Further, the sensor 74 is arranged along the width direction of the transport path 38 and is for detecting an image of the negative film 12 passing through the transport path 38.

As shown in FIG. 4, the magnetic head portion 58 and the sensor portion 60 of the film carrier 10 are connected to the motor 4
0, 42, and the operation switch 76 (see FIG. 1) are connected to the print controller 80 via the connector 78. The print controller 80 includes a CPU and R
A microcomputer (not shown) including an OM, a RAM, etc. is provided, and this printing process is controlled when the image recorded on the negative film 12 is printed on photographic paper by a printer processor (not shown).

In this print controller 80, when the negative film 12 is pulled out from the cartridge 20 of the cartridge loading section 32 and conveyed toward the film accommodating section 34 in the direction of arrow A at a constant speed, the reading head 64
The magnetic information recorded on the magnetic track 26 is read by.

Next, the printer controller 80 feeds the negative film 12 accommodated in the film accommodating portion 34 frame by frame when it is wound into the cartridge 20, and sequentially positions each image frame in the opening 54 to perform exposure. At this time, the exposure condition, the exposure size, etc. are set based on the read magnetic information. Further, the printer controller 80 records the magnetic information on the magnetic track 26 each time the exposure is completed while the negative film 12 is frame-fed.

By the way, the print controller 80
Then, when the negative film 12 is pulled out from the cartridge 20 and rewound and conveyed, the operating states of the recording head 62 and the reading head 64 of the magnetic head portion 58 are confirmed. The print controller 80 confirms the operating state of the magnetic head portion 58 by checking the cartridge 20.
Pull out the negative film 12 from the film accommodating portion 34
When the film is once wound up, the inspection data previously set and recorded by the recording head 62 is written at a preset position that does not affect the magnetic information recorded on the negative film 12.

As shown in FIG. 5A, the writing position of the inspection data is a predetermined position between the notch 14B of the reader portion 14 and the around perforation 14A, or the surrounding perforation 18A of the tail portion 18 and the detachment. At a predetermined position between the perforations 18B, a position that does not affect the magnetic information recorded on the negative film 12 is detected.
8 can be used. This inspection truck 28
Position of the notch 14B detected by the sensor 70,
It can be determined from the positions of the surround perforations 14A and 18A and the detach perforation 18B.

Next, in the print controller 80, when the negative film 12 is wound onto the cartridge 20, the read head 64 reads the data recorded on the inspection track 28, and the read data must be the recorded data. I'm trying to confirm.

Here, in the print controller 80,
When the recorded content and the read content are partly different, it is determined that the recording head 62 and the reading head 64 are dirty, and a CRT display for printing or the like provided in the printer processor is provided. Display device 82
In addition, the recording head 62 and the reading head 6 of the magnetic head unit 58
The display for urging cleaning in 4 is displayed. Further, when the predetermined data cannot be read, it is displayed on the display device 82 to inform that the operation of the magnetic head unit 58 is abnormal, and the exposure work is interrupted and the magnetic head unit 58 is inspected. I am trying.

As shown in FIGS. 1 to 3, the film carrier 10 is provided with a film insertion opening 86 in the cartridge loading section 32 and a film ejection opening 88 in the film accommodating section 34. Cartridge 20
So-called strip negative film 1 not housed in
Processing of 2 is also possible.

Next, the operation of this embodiment will be described. In the film carrier 10, when the cartridge 20 is loaded in the cartridge loading unit 32 and the start of the exposure operation of the negative film 12 is instructed, the spool shaft 22 is rotated by the drive of the motor 40 to load the negative film 12 from the cartridge 20. At the same time as sending out, the motor 44 rotates the feed rollers 42A to 42D and the winding shaft 50 of the film accommodating section 34 to pull out the negative film 12 from the cartridge 20 at a constant speed and convey it, and then once to the film accommodating section 34. It is wound around the winding shaft 50.

At this time, in the film carrier 10, the read head 64 of the magnetic head portion 58 reads the magnetic information recorded on the magnetic track 26 of the negative film 12.

Next, in the film carrier 10, the motor 4
0 and 44 are reversely driven to pull out the negative film 12 from the film accommodating portion 34 and wind it up to the cartridge 20.
At this time, the print controller 80 detects the perforation 24 provided corresponding to each image frame 16A by the sensor 72, sequentially positions each image frame 16A in the opening 54, and is recorded in this image frame 16A. The printed image is printed on photographic paper based on the read magnetic information.

Along with this, the print controller 80
Records magnetic information corresponding to the image for which printing has been completed on the magnetic track 26.

By the way, the print controller 80
Then, in parallel with the exposure of the image recorded on the negative film 12 to the photographic printing paper, the operating states of the recording head 62 and the reading head 64 of the magnetic head unit 58 are inspected.

FIG. 7 shows the print controller 80.
An example of the inspection of the magnetic head portion 58 by the above is shown, and will be described below with reference to this flowchart. Note that this flowchart is executed for each of the magnetic head portions 58 provided on both sides of the negative film 12 in the transport width direction.

First Step 10 of this Flowchart
At 0, it is judged whether or not the processing of the negative film 12 by the film carrier 10 is started. Here, when the motors 40 and 44 are driven to start pulling out the negative film 12 from the cartridge 20, the next step 102
Then, it is confirmed whether or not the sensor 72 detects the notch 14B formed in the leader portion 14 of the negative film 12 by shifting to.

When the sensor 70 detects the notch 14B (affirmative determination in step 102), the drive amount of the motor 44 causes the recording head of the magnetic head portion 58 to detect the track 2 for inspection.
The inspection data is written to the inspection track 28 at the timing when 8 is located (step 104).

When the magnetic head portion 58 is inspected using the tail portion 18 of the negative film 12, the inspection data may be written after the sensor 72 detects the around perforation 18A.

In the next step 106, the negative film 1
It is confirmed whether or not the rewinding of No. 2 is started, and if an affirmative determination is made, then it is confirmed by the sensor 72 whether or not the around perforation 14A is detected. When the aligned perforation 14A is detected (affirmative determination in step 108), the position of the inspection track 28 is confirmed from the position of the around perforation 14A, and the magnetic information recorded on the inspection track 28 is read by the read head 64. Read by (Step 11
0).

In the next step 112, the read head 64
The data of the inspection track 28 read by is compared with the inspection data recorded in the recording head 62.

In the next step 114, it is judged whether or not the read data and the inspection data match, and when they match, this flowchart is ended.

On the other hand, when the read data of the inspection track 28 and the inspection data do not match, step 1
Then, the process proceeds to 16 and a predetermined display is performed on the display device 82 (error processing).

The display on the display device 82 is considered to be because the recording head 62 or the reading head 64 is contaminated when the read data and the inspection data do not partially match with each other. Try to encourage cleaning of 58.

The recording head 62 of the film carrier 10,
When the reading head 64 comes into contact with the negative film 12, dust, dirt, or the like on the surface of the negative film 12 adheres and gradually becomes dirty. Due to such dirt, the recording head 6
It becomes difficult to accurately record the magnetic information by the magnetic recording medium 2 and accurately read the magnetic information by the read head 64.

In the print controller 80, whether or not the inspection data cannot be partially accurately recorded or the recorded data cannot be accurately read due to the dirt attached to the recording head 62 and the reading head 64. The recording head 62 of the magnetic head unit 58,
Prompt cleaning of the read head 64. This ensures that the magnetic head portion 58 of the film carrier 10 can always operate properly.

When the read head 64 cannot read the magnetic information from the inspection track 28, the recording head 62 or the read head 64 may be defective. As a result, it can be assumed that the recording of magnetic information on the magnetic track 26 of the negative film 12 or the reading of the magnetic information from the magnetic track 26 was not accurately performed. Therefore, in the print controller 80, the display device 8 is used.
It is also possible to display a message prompting the user to inspect the magnetic head unit 58 as well as displaying that it is necessary to interrupt the exposure work.

As described above, in the film carrier 10 in which the recording head 62 and the reading head 64 are provided as a pair,
The inspection data is recorded by the recording head 62 at a predetermined position on the negative film 12, and the recorded data is read by the reading head and compared to confirm whether or not the magnetic head portion 58 is in an appropriately operable state. By doing so, it is not necessary to provide a read head for confirming the operation of the recording head 62 in addition to the read head 64 for reading the magnetic information recorded on the negative film 12. This allows
It is possible to suppress an increase in the number of parts of the film carrier 10 and an increase in size thereof, and at the same time, a recording head 64 and a reading head 64
The operating status of can be checked collectively.

The present embodiment shows one example of the present invention and does not limit the present invention. For example, although the magnetic head unit 58 is inspected by the printer controller 80 provided in the printer processor (not shown) in the film carrier 10, this function may be provided in the film carrier 10 itself.

Further, in this embodiment, the negative film 12 is fed frame by frame when it is conveyed in the returning route, but it may be frame fed when it is conveyed in the outward route. In this case, when the image head 16A of the negative film 12 is positioned, the read head 64 may be positioned between the image frames 16A adjacent to each other on the upstream side in the forward transport direction. It may be arranged adjacent to the reading head 64, and may be arranged on the opposite side (the film accommodating portion 34) across the opening 54.
It may be provided on the side) apart from the read head 64.

Further, the present invention relates to the negative film 12-1.
The present invention can also be applied to a photographic print system having a function of arranging images recorded for main lines in a matrix and creating an index print that allows the images recorded on the negative film 12 to be checked at a glance.

In this case, the printer processor is equipped with an image reading device such as a scanner and an analyzer, and first, the negative film 12 is conveyed from the cartridge 20 at a constant speed to read the magnetic information of the negative film 12 by the reading head 64 and at the same time the image is read. When the image recorded in each image frame is read by the reading device, the recording head 6
2, the inspection data is recorded at a predetermined position on the negative film 12 (the inspection track 28 or the like). Next, the data recorded by the recording head 62 may be read by the reading head 64 when the frame-feeding conveyance is performed to expose the image on the negative film 12 onto the photographic paper.

When the negative film 12 is conveyed at least twice along a predetermined conveying path provided with the magnetic head portion 58, the recording head 62 is used to inspect at a predetermined position of the negative film 12 at the first conveying. When data is recorded and then the negative film 12 is conveyed along this conveyance path, the data recorded by the recording head 62 is read by the reading head 64 and compared with the inspection data to compare the recording head and the reading head. The operation state may be confirmed.

Thus, the strip negative film 12 can be processed by the film carrier 10. At this time, when the strippable negative film 12 is first inserted, the inspection data is recorded when the magnetic information of the negative film 12 is read while being conveyed at a constant speed, and then the negative film 12 is inserted. When performing frame-by-frame advance, the previously recorded data may be read and compared.

[0063]

As described above, according to the present invention, it is determined whether or not the magnetic head unit is in an appropriate operating state by recording inspection data when the photographic film is conveyed in the forward path and reading the data when the backward path is conveyed. Since it is confirmed that there is no need to provide a read head for confirming the operation of the recording head, it is possible to suppress an increase in the number of parts of the film carrier and an increase in size. In addition, the operations of the recording head and the reading head can be confirmed accurately, and the magnetic head portion of the film carrier can be maintained in an appropriate operating state, which is an excellent effect.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a film carrier applied to this example.

FIG. 2 is a main part plan view showing a pedestal of a film carrier.

FIG. 3 is a schematic cross-sectional view of the film carrier along the negative film transport direction.

FIG. 4 is a block diagram showing a control system of the film carrier.

5A is a plan view showing a schematic configuration of a negative film mounted on a film carrier, and FIG. 5B is a schematic plan view showing a state where a part of the negative film is pulled out from a cartridge.

FIG. 6 is a schematic plan view showing a relative position between an opening of a film carrier and a magnetic head portion.

FIG. 7 is a flowchart showing an example of inspection of a magnetic head unit.

[Explanation of symbols]

10 Film Carrier 12 Negative Film (Photographic Film) 20 Cartridge 26 Magnetic Track 28 Inspection Track 38 Conveying Paths 40, 44 Motor (Conveying Positioning Means) 58 Magnetic Head Section 60 Sensor Section (Conveying Positioning Means) 62 Recording Head 64 Reading Head 80 Print controller (conveyance positioning means, magnetic head control means, inspection means) 82 Display device (notification means)

Claims (2)

[Claims] 1. A photographic film contained in a cartridge is reciprocally conveyed in the direction of pulling out from the cartridge and in the winding-up direction, and at the time of conveyance in any one direction, a frame-by-frame image is recorded at a predetermined exposure position A method for inspecting the operation of a recording head, which is provided on a film carrier for positioning and which records magnetic information on a magnetic recording layer of the photographic film, and an operation of a read head which reads the recorded magnetic information, the method comprising: A magnetic recording medium, characterized in that inspection data set in advance in the magnetic recording layer is recorded by the recording head during the forward transportation of the film, and the recorded data is read and compared by the reading head during the backward transportation of the photographic film. Head inspection method. 2. A transport positioning means capable of reciprocally transporting a photographic film along a transport path and transporting the photographic film frame by frame during one of the transports to position it at a predetermined exposure position.
A read head which is provided in the transport path and which reads magnetic information recorded in a magnetic recording layer when the photographic film is transported, and an exposure position in an upstream transport path in the backward transport direction of the exposure position. A recording head, which is arranged between adjacent image frames when an arbitrary image frame is positioned and is capable of recording magnetic information on the magnetic recording layer of the photographic film, and magnetic recording by the reading head when the photographic film is transported in the forward path. A magnetic head control means for reading magnetic information from the layer and recording the magnetic information by a recording head at the time of backward transportation, and recording inspection data on a predetermined magnetic recording layer at the time of forward transportation of the photographic film and at the time of backward transportation. An inspection means for reading the recorded inspection data and comparing it with the recorded inspection data. Film carrier that.