JPH04124627A - Film for photography and printer - Google Patents

Abstract

PURPOSE:To improve magnetic recording density and to enhance stability in magnetic recording by making a magnetic recording layer a magnetic stripe layer. CONSTITUTION:Magnetic stripes 4a and 4b are added to both ends in the width direction of a photographic film. It is enough that the width of the stripes 4a and 4b is equal to or above a track width required for the magnetic recording. In the case of a conventional 35mm camera, a picture frame 5 is 24mm in the width direction of the film, so that there is surplus by 5.5mm at both ends of the film respectively and it is enough as space for the magnetic stripes 4a and 4b. The magnetic stripe layers 4a and 4b are not superposed on the picture 5 used for photographing and sufficient recording materials are added, thereby holding the recording density equivalent to the conventional audio tape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic film and a printer for photographic film, and more particularly to a photographic film equipped with a magnetic recording layer in which information is recorded by a magnetic recording means, and a photographic film thereof. It relates to printers used for film.

[Conventional technology]

As known from International Publication No. W090104205, a photographic film having a transparent magnetic recording layer has been proposed. This magnetic recording layer is used as a magnetic recording area for the film type, film characteristics such as film sensitivity, frame number, etc., and is also used as a recording area for photographic information by the magnetic recording device built into the camera. It is used as a recording area for print data by the printer's magnetic recording device.

By using such a magnetic recording area, for example, it is possible to automatically read film sensitivity information and read out the photographed frame position using a readout device built into the camera, as well as to make it possible to read out the photographed frame position. By storing customer codes and print data on the photographic film itself, it is also possible to improve the efficiency of reprinting operations.

On the other hand, as known from Japanese Patent Laid-Open No. 1-306845, a photographic film cartridge has been proposed in which the leading end of the film is sent out of the cartridge by rotating a spool in the film feeding direction. Unlike conventional 35mm photo film cartridges, this cartridge does not have the film tip pulled out in advance, making loading film into the camera very easy, even for inexperienced users.

[Problem to be solved by the invention]

The above-mentioned transparent magnetic recording layer is applied to the entire surface of the film, so it is formed as a substantially transparent magnetic recording layer so as not to have any adverse optical effects during photographing or printing processing. Therefore, the magnetic recording density is very low compared to conventional magnetic recording layers for audio and the like, and only about 1/100th the amount of information can be recorded. In addition, with conventional negative films, the coloring of the film due to the magnetic recording layer formed on the entire surface of the film does not have any adverse optical effects, but with films that require transparency such as reversal films, , it is not possible to apply a magnetic recording layer over the entire surface of the film.

[Purpose of the invention]

The present invention was made in view of the above background, and
To provide a film capable of reliably recording various information during camera photography and printing, and a printer compatible with the film.

[Means to solve the problem]

In order to achieve the above object, in the first to third aspects of the present invention, the magnetic recording layer on the film is a magnetic stripe layer, and no magnetic recording layer is provided on the screen of the film. Further, in a fourth invention, reading information from the magnetic recording layer;
The printer is equipped with a device capable of writing and reading information by optical recording.

[Effect]

According to the above configuration, since the magnetic density of the magnetic recording layer is high, reliable magnetic recording is possible. It can also be applied to reversal films.

Hereinafter, the present invention will be explained in detail according to the drawings.

〔Example〕

An example of the photographic film according to the present invention is shown in FIG.

This photographic film 1 is a roll film used in a film cartridge 2 in which a rotatable spool 3 is incorporated. The end portion of the photographic film 1 is wound in engagement with a spool 3. The photographic film shown in FIG. 1 is an example in which magnetic stripes 4a and 4b are provided at both ends in the width direction of the photographic film. It is sufficient that the width of the magnetic stripes 4a, 4b is at least the track width required for magnetic recording. In the case of conventional 35 mm film, the screen frame 5 is 24 mm in the film width direction, so
Since there is a margin of 5.degree. and 5 mm at each end of the film, there is sufficient space for the magnetic stripes 4a and 4b.

The magnetic stripe layers 4a and 4b of the present invention do not overlap the screen 5 used for photographing and can be provided with sufficient magnetic recording material, making it possible to maintain a recording density equivalent to that of conventional audio tapes. . That is, international publication W
Comparing the magnetic recording layer shown in O90104205 with the magnetic stripe layer according to the present invention, the latter has a magnetic recording density about 100 times that of the former. This improves the reliability of magnetic recording, increases the amount of information that can be recorded, and allows for easy reading and writing with a simple magnetic head, making it possible to reduce the cost of cameras using the photographic film of the present invention.

In addition, since no magnetic recording material overlaps the screen, there is no risk of deterioration in image quality.

Next, Fig. 2 shows the perforations 6 corresponding to each screen 5.
A photographic film having one image per screen is shown. The perforations 6 are effective for positioning each screen, and each screen only needs at least one perforation. Of course, in order to improve positioning accuracy, two may be provided, for example, on both sides of each screen, or in front and behind each screen. Further, the perforations 6 may be located inside or outside the magnetic stripe 4a, or may be located toward the magnetic stripe 4b.

FIG. 3 shows an example in which perforations 6 corresponding to each screen 5 are provided at one end of the photographic film 1 in the width direction, and a magnetic stripe layer is provided at the other end. Since the magnetic head contacts the photographic film 1 in the camera, it is preferable that the magnetic head be located on the side opposite to the perforation 6. That is, since the film is run with the magnetic head in contact with the film, when the magnetic head hits the perforations 6, the film is scraped there, which may cause clogging of the magnetic head.

On the other hand, incorporating a magnetic head for magnetic recording into a camera will obviously increase the cost of the camera.
An optical method for recording information with a camera during photographing may also be considered. When using photographic film as shown in Figure 3, the magnetic stripe 4b is used to record film-specific information recorded before camera shooting, as well as dealer, laboratory, print information, etc. after shooting. Information can be recorded optically in the area 7 between each perforation 6 by a camera. The position of the optical information recording may be the interval 8 between each screen 5.

FIG. 9 shows an optical recording camera. The camera 71 has an optical recording device 73 such as an LED built therein, and optically records encoded information on the film in synchronization with the running of the film. Camera 72 shown in FIG.
is an example of a camera that incorporates both an optical recording device 73 and a magnetic recording device 74, and the optical recording device 73 and magnetic recording device 74 write information in the area 7 and the magnetic stripe 4b shown in FIG. 3, respectively. Cameras with only optical recording are relatively low-end models, while cameras with both optical and magnetic recording are compatible with high-end models.

The layer structure of the photographic film according to the present invention is shown in FIG. 6, FIG. 7, and FIG. 8. Photographic films 61, 62, and 63 each show examples of magnetic stripes on one side, magnetic stripes on both sides, and magnetic stripes on the surface. Both photographic films 61 and 62 are composed of a protective layer 64, a magnetic recording layer 65, a support 66, a photosensitive layer 67, and a spacer 68. The photographic film 63 has a magnetic recording layer 65 exposed on the surface of the film and has no protective layer. The magnetic recording layer may be formed by any method such as coating, co-casting, printing, etc.

Next, FIG. 4 shows a printer using the photographic film provided with the magnetic stripe layer of the present invention. This printer is
Exposure section 41 for printing, magnetic recording read head 4
2a1 magnetic recording write head 42b1 optical recording read head 43, recording information processor 44, exposure control device 4
5. Consists of a print information writing processor 46.

The magnetic recording/reading head 42a magnetically reads information unique to the film and the information at the time of photographing with the camera, the optical recording/reading head 43 optically reads the information at the time of photographing with the camera, and the recording information processor 44 reads the information at the time of photographing with the camera. Send the necessary information. The exposure control device 45 performs appropriate exposure based on the information recorded on the film and the information from the photographed screen, and the exposure conditions are set on the magnetic stripe layer 4b by the magnetic recording writing head 42b through the print information writing processor 46. recorded. magnetic stripe layer 4b
The magnetic information and optical information recorded in the areas 7 and 7 are read by a magnetic recording read head 42a and an optical record read head 43, respectively, before a screen corresponding to each piece of information comes to the exposure unit 41.
When the screen is read in and exposed, the exposure control device 45 controls the exposure so that the exposure is appropriate.

Figure 5 shows magnetic stripes on one side, magnetic stripes on both sides,
An example of a printer compatible with the transparent magnetic recording layer provided film is shown below. This includes magnetic recording/reading heads 51as51b1, magnetic recording/writing heads 51c, 51d, and optical recording/reading heads 52 at both ends of the photographic film 1 in the width direction.
a, 52b, and reading and writing are possible no matter which side magnetic recording or optical recording is placed on.

Figure 11 shows a photographic film provided with a transparent magnetic recording layer.
It is recorded by superimposing optical records. In a transparent magnetic recording layer 81, a coded optical record 85 is recorded in a superimposed manner on a track 82 used for magnetic recording. Even in such a case, the printer shown in FIG. 5 can easily handle the situation.

FIG. 12 shows an example of a photographic film cartridge in which film is fed out by rotating the spool in the film feeding direction. Regulating tongues 10a and 10b formed in opposing directions at the ends of the flanges 9a and 9b regulate the outermost peripheral surface of the film roll to prevent loosening of the film roll, and release the restriction by deforming the tongues at the position where the film is sent out. It has means 11a and llb. The photographic film 1 is fed out from the cartridge 2 by rotating the spool 3 in the film feeding direction.

〔Effect of the invention〕

As described above, according to the photographic film and printer of the present invention, by using a magnetic stripe layer as the magnetic recording layer, the magnetic recording density can be significantly increased, so that magnetic recording can be performed reliably and stably. This made it possible to dramatically increase the amount of information that can be recorded per unit track. Furthermore, by increasing the magnetic recording density, recording and reproducing can be performed easily even with a simple and inexpensive magnetic head, so it is possible to reduce the cost of a camera equipped with a built-in magnetic head.

In addition, providing perforations corresponding to each screen of the film increases the positional accuracy of the screen, and provides a magnetic stripe layer on one end of the film for magnetic recording, while the other end is separated by 4° between the perforations from the camera. Use in optical recording can eliminate clogging of magnetic heads caused by scratches on the film and reduce camera costs.

On the other hand, a photographic printer equipped with both an optical recording reading device and a magnetic recording reading and writing device uses magnetic recording,
It is now compatible with both optical recording, magnetic, and optical recording films, and can accommodate any variation of camera-side recording methods.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a first embodiment of a photographic film according to the present invention. FIG. 2 is a plan view showing a second embodiment of the photographic film according to the present invention. FIG. 3 is a plan view showing a third embodiment of the photographic film according to the present invention. FIG. 4 is a plan view showing the main parts of a fourth embodiment of the printer according to the present invention. FIG. 5 is a plan view showing the main parts of another embodiment of the present invention. FIGS. 6, 7, and 8 are cross-sectional views showing examples of the layer structure of photographic films. FIGS. 9 and 10 are plan views showing an example of an optical recording camera and an optical/magnetic recording camera with the back cover opened. FIG. 11 is a plan view showing an example in which optical recording is superimposed on a film provided with a transparent magnetic recording layer. FIG. 12 is a sectional view showing an example of a cartridge that feeds film by rotating the spool. 1 ・ ・ ・ ・ φ 2 ・ φ ・ ・ φ 3 ・ ・ ・ ・ Numbers 4a, 4b ・ 5 ・ ・ ・ ・ ・ 6 ・ ・ ・ ・ 7Oφ ・ ・ ・ 8 ・ ・ ・ ・・ ・ 41Φ ・ Fist ・ ・ 42a, 51a. - Photographic film - Film cartridge - Spool - Magnetic stripe - Screen perforation area - Spacing - Exposure section 51b...Magnetic recording reading head 42b, 51c, 51d...Magnetic recording writing head 43.52a, 52b ...Optical recording/reading head 44... Recording information processor 45... Exposure control device 46... Print information writing processor 61.6
2.63 Photographic film 64 Protective layer 65 Magnetic recording layer 66 Support 67 Photosensitive layer 68 ...Spacer 71.72-#ψLeft camera 3...Optical recording device 74...Magnetic recording device 81...Transparent magnetic recording layer 82... Track 83...Fist 9...Perforation 84...Screen 85...Optical records 9a, 9b...Flanges 10a, 10b...Restriction tongues 11a, llb... Measures for lifting restrictions No. 2 Figure b b 3rd group b Figure 4

Claims (3)

[Claims] (1) In the case of 35 mm photographic film, the leading end of the photographic film wound around the spool is fed out of the cartridge body by rotating the spool, which is rotatably provided within the cartridge body, in the film feeding direction. 1. A photographic film having a magnetic stripe layer for magnetic recording on at least one end in the width direction of the film. (2) The photographic film according to claim (1), characterized in that there are one or two perforations on one side of the screen corresponding to each screen. (3) In 35 mm photographic film, the leading end of the photographic film wound around the spool is fed out of the cartridge body by rotating the spool, which is rotatably provided inside the cartridge body, in the film feeding direction. A photographic film having a magnetic stripe layer for magnetic recording at one end in the width direction of the film, and one or two perforations corresponding to each screen at the other end. (4) In a printer that uses photographic film on which information other than image information from photography is recorded, a device for optically reading said information and a device for magnetically reading said information;
It is characterized by being equipped with a writing device,
Printer for photographic film.