JPH06148798A - Photographic film and magnetic head cleaning film - Google Patents

Abstract

PURPOSE:To provide the photographic film which can easily and surely clean a magnetic head or the magnetic head cleaning film. CONSTITUTION:This photographic film 8a has a cleaning part 2a of a prescribed length, for example, the length slightly shorter than the length at which the film is fed to a first frame by automatic winding, at the beginning end of a silver salt film loaded in a cartridge 7a. The film has also a magnetic band part 1a in succession to this cleaning part 2a. The magnetic layer constituting the magnetic band part 1a is constituted of, for example, magnetic powder, binder, carbon, alumina, and various kinds of lubricants, dispersants, etc. The cleaning layer forming the cleaning part 2a is constituted of a coating film which is formed by application of a special coating material contg. a polishing material, such as, for example, alumina or chromium oxide, or a magnetic coating material having a high polishing property and has an excellent cleaning effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film and a magnetic head cleaning film, and more particularly to a magnetically recordable photographic film capable of cleaning a magnetic head and a magnetic head cleaning film.

[0002]

2. Description of the Related Art In recent years, many proposals have been made regarding a camera capable of recording shooting information on a magnetic recording medium provided on a film by a magnetic head. Further, a proposal has also been made regarding the cleaning process of the magnetic head, for example, a camera having a magnetic head disclosed in Japanese Patent Laid-Open No. 172835/1993, when a cleaning film is loaded, after being wound up. A camera configured to rewind and perform cleaning,
The number of times the cleaning film has been used is recorded.

[0003]

However, in the camera disclosed in the above-mentioned Japanese Patent Laid-Open No. 3-172835,
The structure of the cleaning film itself is not specifically shown. Further, the number of times the cleaning film has been used cannot accurately determine whether the cleaning is excessive or insufficient.

The present invention has been made to solve the above-mentioned problems, and provides a photographic film or a magnetic head cleaning film capable of easily and reliably cleaning the magnetic head. With the goal.

[0005]

The photographic film of the present invention comprises a magnetic recording medium and a magnetic head cleaning means.

Further, the magnetic head cleaning film of the present invention is characterized in that the magnetic head cleaning means and the magnetic recording medium on which the test signal is recorded are provided alternately at a predetermined interval.

[0007]

According to the photographic film or the magnetic head cleaning film described above, the magnetic head can be cleaned by sliding the film on the magnetic head. Further, in the magnetic head cleaning film, magnetic recording is performed. The test signal recorded on the medium can detect the cleaning state of the magnetic head, and thereby the proper cleaning state can be determined.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a photographic film 8 according to the first embodiment of the present invention.
It is a perspective view of the state which pulled out the front-end | tip part of a from the cartridge 7a. Further, FIG. 2 is an enlarged sectional view of the photographic film 8a. As shown in FIG. 1, the photographic film 8a
Is a photographic film for a silver halide camera having a cleaning film portion 2a which is a magnetic head cleaning means and a magnetic band portion 1a which is a magnetic recording medium.

The photographic film 8a is a cartridge 7a.
At the start end of the silver salt film loaded in the tape, a cleaning unit 2a having a predetermined length, for example, a length slightly shorter than the length of the first frame fed by automatic winding is provided. 1a is provided. The magnetic layer forming the magnetic band portion 1a is composed of, for example, magnetic powder, binder, carbon, alumina and various lubricants and dispersants. Further, the cleaning layer forming the cleaning portion 2a is formed of a coating film excellent in cleaning action, which is applied by using a special coating material containing an abrasive such as alumina / chromium oxide or a magnetic coating material having high polishing property. .

FIG. 2 is a view showing the sectional structure of the photographic film 8a of this embodiment. A photosensitive layer 5a including an antihalation layer and a protective layer is provided on the film base 6a in the same manner as a normal film. Further, the photosensitive layer 5a
Magnetic band portion 1a provided on the upper surface side of the object, that is, on the side surface of the subject
Is coated with a magnetic layer 3a composed of a transparent magnetic band, and the cleaning portion 2a on the photosensitive layer 5a is also coated with
The cleaning layer 4a is applied. The magnetic layer 3a and the cleaning layer 4a have almost the same thickness (for example, several μm).
Formed). Therefore, the film thickness becomes substantially uniform, and the winding operation can be performed smoothly. The film 8a of this embodiment shown in FIG. 2 can be applied to a camera in which a magnetic head is mounted on the subject side of the film.

Next, the shooting and film feeding operations of the photographic film 8a of this embodiment will be described. When the film travels, first, the film is started to be wound, and when the cleaning unit 2a travels on a magnetic head unit (not shown), the cleaning unit 2a removes magnetic powder and other dust adhering to the magnetic head. Next, when the film is wound up to the first frame and is in a shooting standby state, the cleaning unit 2a
Of the magnetic band portion 1a is completed, and a normal photographic film state is set. As described above, according to the photographic film 8a of the present embodiment, the magnetic head is cleaned every time a new film is loaded in the camera, and the occurrence of information writing or reading errors is alleviated.

FIG. 3 shows a photographic film 8 of the first embodiment.
The expanded cross section of the film 8aA which is a modification of a is shown. In the film 8aA of this modified example, the photosensitive layer 5a including an antihalation layer and a protective layer is provided on the upper side of the film base 6a, that is, on the side surface of the subject, in the same manner as a normal film. Furthermore, on the lower side of the film base 6a, that is, on the magnetic strip portion 1aA opposite to the side of the photosensitive layer 5a,
The magnetic layer 3aA, which is not necessarily transparent, is applied, and
A cleaning layer 4aA is applied to the cleaning portion 2aA. The magnetic layer 3aA and the cleaning layer 4aA
Have substantially the same thickness (about several μm).
Therefore, the film thickness becomes substantially uniform, and the winding operation can be performed smoothly. The film of this modification shown in FIG. 3 can be applied to a camera in which the magnetic head is mounted on the side opposite to the subject from the film. Further, the photographing and film feeding operations using the photographic film 8aA of this modification are the same as those of the photographic film 8a of the first embodiment.

FIG. 4 is a film showing another modification of the photographic film of the first embodiment, which is the film 8b.
Is effective for a camera equipped with a magnetic head having a prewinding function. The photographic film 8b of this modification is
As shown in FIG. 4, a cleaning unit 2b having a predetermined length, that is, a length from the end of the last frame to the end is provided at the end of the silver salt film loaded in the cartridge 7b. The portion is provided with a magnetic band portion 1b. The magnetic strip portion 1b and the cleaning portion 2b
2 has the same structure as the magnetic strip portion 1a and the cleaning portion 2a shown in FIG. Further, the magnetic band portion 1aA and the cleaning portion 2aA of the modification shown in FIG. 3 may have the same configuration.

Next, the shooting and film feeding operations of the film 8b will be described. When the film 8b is running, first, all the film 8b is wound up, and then,
Begin rewinding the film 8b. When the cleaning unit 2b slides on a magnetic head unit (not shown), the cleaning unit 2b removes magnetic powder and other dust attached to the magnetic head. Next, when the first frame, for example, 24 films are taken, the rewinding progresses to the 24th frame, and when the shooting standby state is reached, the cleaning unit 2b has finished running and the magnetic band unit 1b starts running. Then, the photographic film in which the normal photographic information is magnetically recorded is fed. Therefore, the magnetic head is cleaned each time a new film is loaded in the camera, and the occurrence of information writing or reading errors is mitigated.

Further, as another modified film, a film in which the cleaning part 2a of FIG. 1 and the cleaning part 2b of FIG. 4 are both provided in one film can be proposed. In this case, there is an effect that it can be used regardless of the winding method of the camera.

FIG. 5 is a perspective view of the photographic film 8c according to the second embodiment of the present invention in a state in which the front end portion is pulled out from the cartridge 7c. Further, FIG. 6 shows the photographic film 8c.
FIG. As shown in FIG. 5, the photographic film 8c is a silver salt camera photographic film having a cleaning film portion 2c which is a magnetic head cleaning means and a magnetic band portion 1c which is a magnetic recording medium.

The photographic film 8c has a predetermined length at the beginning of the silver salt film loaded in the cartridge 7c as in the case of the first embodiment, for example, the length of the film fed to the first frame by automatic winding. The cleaning section 2c having a slightly short length is provided, and the magnetic band section 1c is provided following the cleaning section 2c. The magnetic band portion 1c and the material forming the cleaning portion 2c are the same as those in the first embodiment.

Referring to FIG. 6, the film 8 of the second embodiment described above.
Explaining the sectional structure of c, the photosensitive layer 5 including an antihalation layer and a protective layer on the side of the subject of the film base 6c.
c is provided like a normal film. Further, a magnetic layer 3c composed of a transparent magnetic band is applied to the upper side of the photosensitive layer 5c on the object side, and the magnetic layer 3c is further coated.
A cleaning layer 4c is applied to the cleaning portion 2c on the upper surface of the.

In the film 8a of the first embodiment shown in FIG. 2, the magnetic layer 3a and the cleaning layer 4a must be joined together, which increases the number of manufacturing steps, but the film of FIG. 5 of the present embodiment. 8c can be obtained by applying the cleaning layer 4c on the magnetic layer 3c, which reduces the number of manufacturing steps. The film 8c of this embodiment can be applied to a camera in which a magnetic head is mounted on the subject side of the film. Further, the shooting and film feeding operations by the film 8c of the present embodiment are the same as the operations of the film 8a of the first embodiment shown in FIG. FIG. 7 shows the second
It is an enlarged view of the cross-section structure of the film which shows the modification of the film 8c of an Example. In this modified example, a photosensitive layer 5c including an antihalation layer and a protective layer is provided on the side of the subject of the film base 6c in the same manner as a normal film. Further, the magnetic layer 3cA constituting the magnetic strip 1cA is applied to the lower side of the film base 6c which is the side opposite to the subject, that is, the side opposite to the photosensitive layer 5c, and the cleaning provided on the lower side surface of the magnetic layer 3cA is applied. A cleaning layer 4cA is applied to the portion 2cA. The magnetic layer 3cA
Does not have to be a transparent magnetic band. The first shown in FIG.
In the film 8aA of the modified example of the embodiment, the magnetic layer 3aA and the cleaning layer 4aA had to be bonded, which increased the number of manufacturing steps, but the film 8a of FIG.
Since the cleaning layer 4cA may be applied on the magnetic layer 3cA for cA, the number of manufacturing steps can be reduced. The film 8cA in FIG. 7 can be applied to a camera in which the magnetic head is mounted on the side opposite to the subject from the film.

FIG. 8 is a perspective view of a film showing another modified example of the photographic film of the second embodiment. The film 8d of this modified example is effective for a magnetic head mounted camera having a prewinding system function. It is a film. As shown in FIG. 8, the photographic film 8d is provided with a cleaning portion 2d having a predetermined length at the end of the silver salt film loaded in the cartridge 7d, and a magnetic band portion 1d at the front portion thereof. The configurations of the magnetic strip portion 1d and the cleaning portion 2d are the same as those of the magnetic strip portion 1c and the cleaning portion 2c shown in FIG. Further, the magnetic band portion 1cA and the cleaning portion 2cA of the modification shown in FIG. 7 may have the same configuration. Further, the shooting and film feeding operations using the present film are the same as the operations of the film 8b of FIG. 4 which is a modified example of the first embodiment.

FIG. 9 is a perspective view of the magnetic head cleaning film 8e according to the third embodiment of the present invention in a state where the front end portion thereof is pulled out from the cartridge 7e. In addition, FIG.
It is an expanded sectional view of the cleaning film 8e. As shown in FIG. 9, the cleaning film 8e is a cleaning film portion 2 which is a magnetic head cleaning means.
e is a cleaning film for a silver salt camera having a magnetic band 1e which is a magnetic recording medium.

The cleaning film 8e is provided with a cleaning portion 2e having a predetermined length at the starting end of the silver salt film loaded in the cartridge 7e, and following the cleaning portion 2e, a magnetic band portion 1e having a predetermined length. Is equipped with.
Further, a cleaning portion 2e having a predetermined length is provided subsequent to the magnetic strip portion 1e, and thereafter, the magnetic strip portions 1e and the cleaning portions 2e are alternately arranged at predetermined intervals repeatedly until the end of the film. The end portion is reached at the portion 1e. However,
The start end may start from the magnetic strip 1e and the end may end at the magnetic strip 1e. This is to support a camera equipped with a magnetic head having a prewinding function. The magnetic layer forming the magnetic band portion 1e is, for example,
It is composed of magnetic powder, binder, carbon, alumina and various lubricants and dispersants.
The cleaning layer forming e is composed of a coating film excellent in cleaning action, which is applied by using a special coating material containing an abrasive such as alumina / chromium oxide or a magnetic coating material having high polishing property.

The cross-sectional structure of the film 8e will be described with reference to the enlarged cross section of the main cleaning film 8e shown in FIG. A photosensitive layer 5e including an antihalation layer and a protective layer is provided on the side of the subject of the film base 6e in the same manner as a normal film. Further, on the upper side of the photosensitive layer 5e which is the subject side, the magnetic layer 1e is provided with a magnetic layer 3e formed of a transparent magnetic band, and the cleaning unit 2e is provided with a cleaning layer 4e, which are alternately arranged in a plurality of regions. Is applied to. The magnetic layer 3e and the cleaning layer 4e are formed to have substantially the same thickness (about several μm). Therefore, the film thickness becomes substantially uniform, and the winding operation can be performed smoothly. The cleaning film 8e shown in FIG.
The magnetic head is applied to a camera arranged on the subject side of the film.

Next, the cleaning operation of the cleaning film 8e of this embodiment will be described with reference to the flowchart of FIG. First, a film is loaded in step S11, and it is determined in step S12 whether the film is a cleaning film. As a determination method, for example, if a DX code is input, it is determined to be a normal film with a magnetic band, and if no DX code is input, it is determined to be a cleaning film.
Next, if it is determined that the film is a normal film with a magnetic band, the film is wound up for several frames in step S21, and then in step S2
The film winding is stopped in 2 and the photographing standby state is set in step S23.

On the other hand, if the cleaning film is determined, the cleaning film is started to be wound in step S13, and the cleaning unit 2e runs on the magnetic head unit (not shown) in step S14 to perform cleaning. Then, the magnetic powder and other dust attached to the magnetic head are removed by the cleaning unit 2e. Next, in step S15, the test signals recorded in the magnetic band portion 1e, for example, the frequencies of 1.5 KHz and 3 KHz are reproduced, and the reproduction output level is stored in the EEPROM or the like. next,
In step S16, the reproduction output level is compared with the previous reproduction output level, and if it is increased, the process returns to step S14,
The processing of steps S14 and S15 is repeated. However, at the first time, since the previous reproduction output level is reset to 0, the process always returns to step S14.

In step S16, the reproduction output level is compared with the previous reproduction output level. If there is no increase, it is determined that the head cleaning is completed, and the process proceeds to step S17.
Then, the film winding is stopped. Next, in step S18, the film is rewound. When the film is rewound to the starting end in step S19, the rewinding is ended, and in step S20, the process is completed and the cleaning film is taken out.

In the case of performing the cleaning as described above, the reproduction output level is repeatedly checked every time the magnetic head is cleaned little by little to prevent the magnetic head from being worn due to excessive cleaning, or due to insufficient cleaning. Prevents magnetic powder and dust from remaining on the magnetic head.
By performing the processing as described above, cleaning is appropriately performed, and the occurrence of information writing or reading errors is mitigated.

FIG. 14 shows the transition of the reproduction output level with respect to the running of the cleaning film in which the horizontal axis represents the cleaning film running time and the vertical axis represents the reproduction output level. Reference symbols a1 to a6 represent reproduction outputs when the magnetic band portion 1e, which is the test signal recording portion, is passing through the magnetic head, and b1 to b6 are reproduction outputs when the cleaning portion 2e is passing through the magnetic head. Is shown. Then, a5 indicates a point where the reproduction output is saturated, and a6 indicates a point where it is determined that the reproduction output does not increase.

FIG. 11 is an enlarged view of a sectional structure of a cleaning film 8eA showing a modified example of the cleaning film of the third embodiment. In this modification, a photosensitive layer 5e including an antihalation layer and a protective layer is provided on the film base 6e in the same manner as a normal film.
Further, the lower side of the film base 6e, that is, the photosensitive layer 5e.
The magnetic layer 3eA is applied to a plurality of regions on the magnetic band portion 1eA, and the cleaning layers 4eA are alternately applied to a plurality of regions on the cleaning portion 2eA on the side opposite to the side. The magnetic layer 3eA does not have to be a transparent magnetic band. Further, the magnetic layer 3eA and the cleaning layer 4eA
Have substantially the same thickness (about several μm). Therefore, the film thickness becomes uniform, and the winding operation can be performed smoothly. Cleaning film 8e of this modification
A is applied to a camera in which a magnetic head is mounted on the side of the film opposite to the subject. Note that FIG. 12 shows the arrangement of the cleaning section 2e and the magnetic band section 1e at the end of the cleaning film 8e of the third embodiment shown in FIG.

FIG. 15 shows a magnetic head cleaning film 8g according to the fourth embodiment of the present invention, in which a tip portion of a magnetic head cleaning film 8g is replaced by a cartridge 7g.
It is a perspective view in the state pulled out from. FIG. 16 is an enlarged sectional view of the cleaning film 8g. FIG.
FIG. 16 is a perspective view showing the state of the end of the cleaning film 8g of FIG. As shown in FIG. 15, the magnetic head cleaning film 8g of the present embodiment is a cleaning film for a silver salt camera having a cleaning film portion 2g which is a magnetic head cleaning means and a magnetic band portion 1g which is a magnetic recording medium.

The cleaning film 8 shown in FIG.
The sectional structure of g will be described. Photosensitive layer 5g including antihalation layer and protective layer on the side of the subject of film base 6g
Is provided in the same manner as a normal film. Further, a magnetic layer 3g, which is a magnetic band portion 1g of a transparent magnetic band, is applied onto the photosensitive layer 5g, and further, a cleaning layer 4g is intermittently provided at predetermined intervals in a cleaning portion 2g on the magnetic layer 3g. It is applied at multiple points. In the film structure shown in FIG. 10, the magnetic layer 3e and the cleaning layer 4e have to be joined at a plurality of points, which increases the man-hours of the manufacturing process, whereas the present cleaning film shown in FIG. It suffices to apply the cleaning layer 4g on the layer 3g, which reduces the number of manufacturing steps. The cleaning film 8g is effective for a camera in which a magnetic head is mounted on the subject side of the film.

FIG. 17 is a view showing the cross-sectional structure of a cleaning film showing a modification of the cleaning film of the fourth embodiment shown in FIG. In the cleaning film 8gA of this modification, a photosensitive layer 5g including an antihalation layer and a protective layer is provided on a film base 6g in the same manner as a normal film. Further, a magnetic layer 3gA, which is a magnetic band portion 1gA, is applied to the lower side of the film base 6g, which is the side opposite to the subject, that is, the side opposite to the photosensitive layer 5g side, and cleaning on the magnetic layer 3g is further performed. The cleaning layer 4gA, which is the portion 2gA, is intermittently applied at a plurality of locations at predetermined intervals.

The magnetic layer 3gA does not have to be a transparent magnetic band. In the cleaning film 8g of the fourth embodiment of FIG. 11, the magnetic layer 3g and the cleaning layer 4g have to be bonded, and the number of manufacturing steps increases, whereas the cleaning film 8gA shown in FIG. Since the cleaning layer 4gA may be applied on the layer 3gA, the number of manufacturing steps can be reduced. The cleaning film 8gA can be applied to a camera in which a magnetic head is mounted on the side of the film opposite to the subject.

[0034]

As described above, the photographic film of the present invention is
By providing a magnetic recording medium and a magnetic head cleaning means, the magnetic head can be cleaned when a film is loaded, and recording or reproducing error of the magnetic head can be prevented. Further, in the cleaning film of the present invention, the magnetic head cleaning means and the magnetic recording medium on which the test signal is recorded are alternately arranged at a predetermined interval, and the test signal is detected during the cleaning operation to perform magnetic recording. The test signal recorded on the medium can detect the cleaning state of the magnetic head, which can determine the proper cleaning state and at the same time prevent the abrasion of the magnetic head due to excessive cleaning.

[Brief description of drawings]

FIG. 1 is a perspective view of a photographic film according to a first embodiment of the present invention in a state in which a front end portion is pulled out from a spool.

FIG. 2 is an enlarged sectional view of the photographic film of FIG.

FIG. 3 is an enlarged sectional view of a film showing a modification of the photographic film of the first embodiment shown in FIG.

FIG. 4 is a perspective view showing another modified example of the photographic film of the first embodiment of FIG. 1 in a state where a film is pulled out from a spool to a terminal end portion.

FIG. 5 is a perspective view of the photographic film of the second embodiment of the present invention with the tip portion thereof pulled out from the spool.

FIG. 6 is an enlarged sectional view of the photographic film of FIG.

FIG. 7 is an enlarged sectional view of a film showing a modification of the photographic film of the second embodiment shown in FIG.

FIG. 8 is a perspective view showing another modified example of the photographic film of the second embodiment shown in FIG. 5 in a state where the film is pulled out from the spool to the end portion.

FIG. 9 is a perspective view of a magnetic head cleaning film according to a third embodiment of the present invention with a tip portion thereof pulled out from a spool.

10 is an enlarged cross-sectional view of the cleaning film of FIG.

FIG. 11 is an enlarged sectional view of a cleaning film showing a modification of the cleaning film of the third embodiment shown in FIG.

FIG. 12 is a perspective view of the cleaning film of FIG. 9 pulled out from the spool to the end portion. .

FIG. 13 is a flowchart of a cleaning process using the cleaning film of FIG.

14 is a diagram showing a change in reproduction output with respect to a film running time in the cleaning process of FIG.

FIG. 15 is a perspective view of a magnetic head cleaning film according to a fourth embodiment of the present invention with a tip portion thereof pulled out from a spool.

16 is an enlarged cross-sectional view of the cleaning film of FIG.

FIG. 17 is an enlarged sectional view of a cleaning film showing a modification of the cleaning film of the fourth embodiment shown in FIG.

FIG. 18 is a perspective view of the cleaning film of FIG. 15 pulled out from the spool to the end portion.

[Explanation of symbols]

1a, 1aA, 1b, 1c, 1cA, 1d, 1e, 1e
A, 1g, 1gA ......... Magnetic band (magnetic recording medium) 3a, 3aA, 3c, 3cA, 3e, 3eA, 3g, 3
gA ......... Magnetic layer (magnetic recording medium) 2a, 2aA, 2b, 2c, 2cA, 2d, 2e, 2e
A, 2g, 2gA ... Cleaning unit (cleaning means) 4a, 4aA, 4c, 4cA, 4e, 4eA, 4g, 4
gA ... Cleaning layer (cleaning means) 8a, 8aA, 8b, 8c, 8cA, 8d ....
… Photographic film 8e, 8eA, 8g, 8gA …………………… Magnetic head cleaning film

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 11, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

FIG. 2 is a view showing the sectional structure of the photographic film 8a of this embodiment. A photosensitive layer 5a including an antihalation layer and a protective layer is provided on the film base 6a in the same manner as a normal film. Further, the photosensitive layer 5a
Magnetic band portion 1a provided on the upper surface side of the object, that is, on the side surface of the subject
Is coated with a magnetic layer 3a composed of a transparent magnetic band, and the cleaning portion 2a on the photosensitive layer 5a is also coated with
The cleaning layer 4a is applied. However, magnetic strip
When 1a is applied only on the part other than the frame
Need not be a transparent magnetic band. The magnetic layer 3a and the cleaning layer 4a are formed with substantially the same thickness (for example, about several μm). Therefore, the film thickness becomes substantially uniform, and the winding operation can be performed smoothly. The film 8a of this embodiment shown in FIG. 2 can be applied to a camera in which a magnetic head is mounted on the subject side of the film.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

FIG. 4 is a film showing another modification of the photographic film of the first embodiment, which is the film 8b.
Is effective for a camera equipped with a magnetic head having a prewinding function. The photographic film 8b of this modification is
As shown in FIG. 4, the cleaning unit 2 has a predetermined length at the end of the silver salt film loaded in the cartridge 7b, that is, a length slightly shorter than the length from the end of the last frame to the end.
b, and a magnetic band portion 1b is provided in a portion before the cleaning portion 2b. The configurations of the magnetic strip portion 1b and the cleaning portion 2b are the same as those of the magnetic strip portion 1 shown in FIG.
a and the cleaning unit 2a are the same. Also, in FIG.
Magnetic band portion 1aA and cleaning portion 2aA of the modification shown in FIG.
The same configuration may be used.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Referring to FIG. 6, the film 8 of the second embodiment described above.
Explaining the sectional structure of c, the photosensitive layer 5 including an antihalation layer and a protective layer on the side of the subject of the film base 6c.
c is provided like a normal film. Further, a magnetic layer 3c composed of a transparent magnetic band is applied to the upper side of the photosensitive layer 5c on the object side, and the magnetic layer 3c is further coated.
A cleaning layer 4c is applied to the cleaning portion 2c on the upper surface of the. However, the magnetic strip portion 1a is the shooting frame portion.
If it is applied only to the
May be.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

The cross-sectional structure of the film 8e will be described with reference to the enlarged cross section of the main cleaning film 8e shown in FIG. A photosensitive layer 5e including an antihalation layer and a protective layer is provided on the side of the subject of the film base 6e in the same manner as a normal film. Further, on the upper side of the photosensitive layer 5e which is the subject side, the magnetic layer 1e is provided with a magnetic layer 3e formed of a transparent magnetic band, and the cleaning unit 2e is provided with a cleaning layer 4e, which are alternately arranged in a plurality of regions. Is applied to. However, the magnetic strip part 1a is only for the parts other than the shooting frame part.
If applied, it need not be a transparent magnetic band.
The magnetic layer 3e and the cleaning layer 4e are formed to have substantially the same thickness (about several μm). Therefore, the film thickness becomes substantially uniform, and the winding operation can be performed smoothly.
The cleaning film 8e shown in FIG. 10 is applied to a camera in which a magnetic head is arranged on the subject side of the film.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

The cleaning film 8 shown in FIG.
The sectional structure of g will be described. Photosensitive layer 5g including antihalation layer and protective layer on the side of the subject of film base 6g
Is provided in the same manner as a normal film. Further, a magnetic layer 3g, which is a magnetic band portion 1g of a transparent magnetic band, is applied onto the photosensitive layer 5g, and further, a cleaning layer 4g is intermittently provided at predetermined intervals in a cleaning portion 2g on the magnetic layer 3g. It is applied at multiple points. However, the magnetic strip 1a is
Transparent magnetic when applied only on the frame
It does not have to be a belt. In the film structure shown in FIG. 10, the magnetic layer 3e and the cleaning layer 4e have to be joined at a plurality of points, which increases the man-hours of the manufacturing process, whereas the present cleaning film shown in FIG. It suffices to apply the cleaning layer 4g on the layer 3g, which reduces the number of manufacturing steps. The cleaning film 8g is effective for a camera in which a magnetic head is mounted on the subject side of the film.

Claims (2)

[Claims] 1. A photographic film provided with a magnetic recording medium and a magnetic head cleaning means. 2. A magnetic head cleaning film, wherein magnetic head cleaning means and a magnetic recording medium on which a test signal is recorded are provided alternately at predetermined intervals.