JP3855109B2 - Magnetic recording / reproducing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a magnetic recording / reproducing apparatus, and more particularly to a magnetic recording / reproducing apparatus for recording / reproducing magnetic information of a photographic film having a magnetic recording layer.
[0002]
[Prior art]
There has been proposed a camera that uses a photographic film on which a magnetic recording layer is formed, writes the photographic date and time, photographic information, etc. by a magnetic head while feeding the photographic film at the time of photographing, or reads information from this (Japanese Patent Laid-Open No. 4-81735, JP-A-4-285937).
[0003]
There has also been proposed a film image reproducing apparatus that takes a developed photographic film with an image sensor, converts an image of the photographic film into an image signal, outputs the image signal to a monitor TV, and displays the film image.
Such a film image reproducing apparatus is provided with a magnetic recording / reproducing apparatus, and the information recorded on the magnetic recording layer of the photographic film is used as information for reproduction on a monitor TV, or when a film image is printed on photographic paper. It has been proposed to be used as information.
[0004]
[Problems to be solved by the invention]
In the film image reproducing apparatus as described above, when the film is transported, dust or the like adhering to the film surface adheres to the magnetic head that performs magnetic recording or reproduction, or enters the gap of the magnetic head to cause clogging. Magnetic recording / playback may not be possible. In particular, in the case of the above photographic film, the remaining residue of the developing solution adheres to the film, so that the magnetic head is easily clogged.
[0005]
The present invention has been made in view of such circumstances, and provides a magnetic recording / reproducing apparatus for preventing magnetic head clogging due to dust adhering to a film and performing good recording / reproducing of magnetic information. Objective.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a magnetic recording / reproducing apparatus according to claim 1 conveys a photographic film having a magnetic recording layer and magnetically records or reproduces magnetic information on the magnetic recording layer via a magnetic head. In the magnetic recording / reproducing apparatus for carrying out the above, a dust removing member for removing dust adhering to the photographic film by sandwiching the photographic film at a predetermined pressure and a counter pad facing the dust removing member are provided in the conveyance path of the photographic film In addition, the tip of the dust removing member and the counter pad that contacts the photographic film is arcuate, and the curvature of the tip of the dust removing member that contacts the photographic film is the tip of the counter pad that contacts the photographic film. It is characterized by having an arc shape smaller than the curvature .
According to a second aspect of the present invention, there is provided a magnetic recording / reproducing apparatus according to the first aspect of the present invention, further comprising a spring that biases one of the dust removing member and the opposing pad.
A magnetic recording / reproducing apparatus according to a third aspect of the present invention is the magnetic recording / reproducing apparatus according to the first aspect, wherein the dust removing member is provided so that the tip of the dust removing member is in a position retracted from the tip of the magnetic head. The photographic film is wound around the magnetic head.
[0007]
Embodiment
Hereinafter, preferred embodiments of a magnetic recording / reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a structural view showing an embodiment of a film image input apparatus to which a magnetic recording / reproducing apparatus according to the present invention is applied.
[0008]
A film cartridge 12 is mounted in the main body 10 indicated by a two-dot chain line in the drawing of the film image input apparatus. A developed photographic film 14 is wound around a spool 16 in advance in the film cartridge 12. As shown in FIG. 2, the photographic film 14 is formed with image areas 18, 18... At predetermined intervals along the longitudinal direction, and holes 20 A, 20 B indicating the image area 18 are the start ends of the image area 18. Further, a magnetic recording layer 22 is formed on the entire surface of the film or on the edge of the film, and magnetic data indicating photographing data for each frame can be recorded on the magnetic recording layer 22. It is like that.
[0009]
The photographic film 14 is fed from the film cartridge 12 shown in FIG. 1 by a film driving mechanism, and then fed in the direction of the arrow in FIG. The film drive mechanism engages with the spool 16 of the film cartridge 12 and engages with the film supply portion for rotating the spool 16 forward / reversely, and the take-up spool 26 of the film take-up chamber 24, and from the film supply portion. A film take-up unit for taking up the photographic film 14 to be sent out, and a film feed for feeding the photographic film 14 sent out from the film supply unit between the capstans 28 and 28 and the pinch rollers 30 and 30 at a constant speed. It consists of parts.
[0010]
The film supply unit drives the spool 16 of the film cartridge 12 in the clockwise direction in the drawing so that the photographic film 14 is sent out from the film cartridge 12 until the leading end of the film is wound up by the take-up spool 26. Further, the film supply unit is provided with a clutch mechanism for controlling the rotation of the spool 16, and the photographic film 14 is fed with a predetermined tension by the action of the clutch mechanism and the driving force of the capstans 28, 28. Is done.
[0011]
On the other hand, a CCD line sensor 32 is installed above the capstans 28 and 28. The CCD line sensor 32 is arranged in a direction orthogonal to the feeding direction of the photographic film 14, and reads a transmission image of the film 14 being fed illuminated by the light source 34 through the photographing lens 36. The electrical signal converted by the photoelectric conversion element of the CCD line sensor 32 is subjected to image processing by the image processing device 38 and then output to the monitor TV 40 as a video signal. As a result, the image of the photographic film 14 is displayed on the monitor TV 40.
[0012]
The photographic film 14 sent out from the film cartridge 12 is guided to the capstan 28 through the dust removing member 50, the recording head 42, the reproducing head 46 and the dust removing member 54.
The recording head 42, the reproducing head 46, and the dust removing members 50 and 54 are provided above the photographic film 14 and are fixed to the film image input apparatus main body 10. Further, rollers 44 and 48 and opposing pads 52 and 56 are provided below the photographic film 14 corresponding to the recording head 42, the reproducing head 46, and the dust removing members 50 and 54, respectively.
[0013]
The rollers 44 and 48 are biased upward by a spring, and can press the magnetic recording layer 22 of the photographic film 14 against the recording head 42 and the reproducing head 46. Thereby, magnetic data can be recorded from the recording head 42 to the magnetic recording layer 22, and magnetic data recorded on the magnetic recording layer 22 can be read by the reproducing head 46. The magnetic data read by the reproducing head 46 is reproduced by the magnetic recording / reproducing apparatus 51 shown in FIG. 1 and displayed on the monitor TV 40 together with the film image.
[0014]
The opposing pads 52 and 56 are biased upward by a spring, and can press the magnetic recording layer 22 of the photographic film 14 against the dust removing members 50 and 54. As a result, the photographic film 14 is sandwiched between the dust removing members 50 and 54 and the opposing pads 52 and 56, and the dust attached to the photographic film 14 can be removed, and the dust is attached to the recording head 42 and the reproducing head 46. Can be prevented.
[0015]
Note that the dust removing members 50 and 54 may be made of a flexible material such as felt or exene, or a hard material such as aluminum or stainless steel.
The opposing pads 52 and 56 may be a resin such as polyacetal, a metal such as brass, or a rubber roller.
Further, instead of fixing the dust removing members 50 and 54 and attaching the springs to the opposing pads 52 and 56 as described above, the opposing pads 52 and 56 may be fixed and the springs attached to the dust removing members 50 and 54. good.
[0016]
Furthermore, the rollers 44 and 48 are configured to be retracted from the film transport path when the film is transported except when recording / reproducing magnetic data so that the photographic film 14, the recording head 42 and the reproducing head 46 are not in contact with each other. If so, the opposing pads 52 and 56 may be retracted in conjunction with this.
As shown in FIG. 3, the dust removing members 50 and 54 and the opposing pads 52 and 56 are convex circles at least on the side of the film cartridge 12 (FIGS. 50A (54A) and 52A (56A)) in contact with the photographic film. It is formed in an arc shape. Alternatively, chamfering is performed. This prevents the photographic film 14 from being caught by the dust removing members 50 and 54 and the opposing pads 52 and 56 when the photographic film 14 is sent out from the film cartridge 12.
[0017]
Further, as shown in FIG. 4, the tip of the dust removing members 50 and 54 is flat or has a convex arc shape with a small curvature, and the tip of the opposing pads 52 and 56 is a convex arc shape with a large curvature, thereby removing the dust removing member. It is possible to increase the stability of the dust removal effect with respect to the relative positions of 50 and 54 and the opposing pads 52 and 56.
Furthermore, as shown in FIG. 5, the photographic film 14 is wound around the recording head 42 and the reproducing head 46 when the tip of the dust removing members 50 and 54 is higher than the position of the leading end of the recording head 42 and the reproducing head 46. Is preferable because it is stable.
[0018]
【The invention's effect】
As described above, according to the magnetic recording / reproducing apparatus of the present invention, since the dust removal member is provided in the film transport path so that dust attached to the photographic film is not transported to the position of the magnetic head, the photographic film can be fed. Even if it is repeated, dust does not easily adhere to the magnetic head, and good magnetic recording or reproduction can be performed.
[0019]
Further, by providing the dust removing member so that the tip of the dust removing member is retracted from the tip of the magnetic head, the film transport path can be appropriately bent, so that magnetic recording / reproduction is stabilized.
[Brief description of the drawings]
FIG. 1 is a structural view showing an example of a film image input apparatus to which a magnetic recording / reproducing apparatus according to the present invention is applied.
FIG. 2 is a plan view of a photographic film.
FIG. 3 is a view showing an example of the shape of a dust removing member and a counter pad.
FIG. 4 is a view showing an example of the shape of a dust removing member and a counter pad.
FIG. 5 is a diagram showing the attachment positions of the dust removing member and the magnetic head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Film image input device main body 12 ... Film cartridge 14 ... Photo film 22 ... Magnetic recording layer 32 ... CCD line sensor 42 ... Recording head 46 ... Reproduction head 44, 48 ... Roller 50, 54 ... Dust removal member 52, 56 ... Opposite pad

Claims (3)

In a magnetic recording / reproducing apparatus that conveys a photographic film having a magnetic recording layer and performs magnetic recording or reproduction of magnetic information on the magnetic recording layer via a magnetic head,
A dust removing member for removing dust adhering to the photographic film by sandwiching the photographic film at a predetermined pressure and a counter pad facing the dust removing member are provided in the conveyance path of the photographic film, and the dust removing member and the The tip of the opposing pad that contacts the photographic film is arcuate, and the curvature of the tip of the dust removing member that contacts the photographic film is arcuate smaller than the curvature of the tip of the counterpad that contacts the photographic film. A magnetic recording / reproducing apparatus characterized by the above.   2. The magnetic recording / reproducing apparatus according to claim 1, further comprising a spring that biases one of the dust removing member and the opposing pad.   2. The dust removing member is provided so that a tip portion of the dust removing member is retracted from a tip portion of the magnetic head, and the photographic film is wound around the magnetic head. Magnetic recording / reproducing apparatus.

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