JP3574230B2 - Photographic film processing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a photographic film processing apparatus, and more particularly, to a photographic film processing apparatus that collects information other than images recorded on a photographic film from a photographic film and processes the photographic film.
[0002]
[Prior art]
Photographing information (for example, whether or not there is a strobe, a distance to a subject, a focus, a color temperature of subject illumination light, a date at the time of photographing, and a user ID) relating to an image photographed by the camera is printed or displayed. It is effective for. Therefore, as a method of recording information on a photographic film, particularly a negative film, a transparent magnetic substance is applied to the negative film, and information for specifying the negative film and information for specifying an image printed on the negative film are magnetically recorded. (As an example, International Publication Number WO 90/04205). According to this, information can be stored corresponding to each image frame, and the lab can also record the exposure amount at the time of printing for each image frame at the time of printing on photographic paper.
[0003]
In this way, by adding a transparent magnetic recording layer to a photographic film and magnetically recording information on it, for example, it is possible to change the print size at the time of printing, improve the color tone, or print a user's favorite title on the print. Can be baked. Using a photographic film having such a transparent magnetic recording layer, in a machine such as a camera, a laboratory device, or a TV photo player, a magnetic head and a photographic film relatively slide to record and reproduce magnetic information. can do.
[0004]
By the way, due to the relative sliding between the magnetic head and the photographic film, dust and dust in the air and shavings generated from the photographic film may be deposited on the surface of the magnetic head. Had deteriorated. Conventionally, in order to solve this problem, a polishing layer containing a sufficient amount of an abrasive is provided on the surface of a photographic film so that dust or the like deposited on the magnetic head is scraped off by the abrasive action of the abrasive during sliding. I have.
[0005]
[Problems to be solved by the invention]
However, since the contact portion of the photographic film is not only dust or the like deposited on the magnetic head, if a polishing agent is sufficiently contained in the photographic film to prevent the information recording / reproducing performance from deteriorating as in the prior art, Parts other than the deposits, such as the head and the transport path, may also be worn by the abrasive action of the abrasive.
[0006]
The present invention has been made in view of the above circumstances, and has as its object to obtain a photographic film processing apparatus capable of reliably recording or reproducing magnetic information without reducing the durability of a magnetic head.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a conveying means for conveying a photographic film provided with a track for recording magnetic information between a plurality of perforations formed at the film width direction end,
A magnetic head provided to face the track for recording or reproducing the magnetic information; and a magnetic head provided upstream of the magnetic head in the transport direction of the photographic film so as to face the track and adhere to the photographic film. A removing member having a friction coefficient of 0.1 or more on a film sliding surface for removing the attached matter before reaching the magnetic head,A roller that contacts the photographic film, and a pressing unit that includes a spring that biases the roller toward the removing member;It is characterized by having.
[0008]
Next, the operation of the photographic film processing apparatus according to the present invention will be described.
The photographic film used in the photographic film processing apparatus according to the first aspect includes a negative film, a reversal film, an X-ray film, an infrared film, and the like, and a negative film is mainly used.
[0009]
When the photographic film is conveyed by the conveying means, the film contact surface of the removing member removes the adhering matter attached to the photographic film track as the photographic film is conveyed, and the track from which the adhering matter is removed reaches the magnetic head. Magnetic information is recorded or reproduced by a magnetic head. Accordingly, it is possible to prevent dust and dirt from adhering to the magnetic head, and it is possible to reliably record or reproduce magnetic information. Since the coefficient of friction of the film sliding surface of the removing member is 0.1 or more, the effect of removing the adhering matter can be enhanced. Further, since no abrasive is used, the durability of the magnetic head and the transporting means is not impaired.Furthermore, since the spring of the pressing means urges the roller in contact with the photographic film toward the removing member, the effect of removing the attached matter can be enhanced. In addition, the removing member can be reliably slid even with a highly rigid photographic film.
[0010]
According to a second aspect of the present invention, in the photographic film processing apparatus according to the first aspect, the removing member has a film sliding surface having an uneven surface.
[0011]
Next, the operation of the photographic film processing apparatus according to the present invention will be described.
Since the film sliding surface of the removing member is an uneven surface, it is possible to scrape off the attached matter attached to the magnetic recording layer, and the effect of removing the attached matter is higher than a smooth surface.
[0016]
next,Claim 3The operation of the photographic film processing apparatus of the invention described in (1) will be described.
Claim 3In the photographic film processing apparatus described in the above,Since the pressing means presses the photographic film against the removing member,The effect of removing the deposit can be enhanced. Further, even a photographic film having high rigidity can be reliably slid on the removing member.
[0017]
Embodiment
A printer 300 as a photographic film processing apparatus according to an embodiment of the present invention will be described in detail.
[0018]
As shown in FIG. 4, the printer 300 has a light source 314. A print mask 316 is arranged at the uppermost part of the printing optical path L of the light beam emitted from the light source 314, and a part of the roll-shaped photographic paper 16 is sandwiched and fixed to the printing position. The roll-shaped photographic paper 16 is wound in layers on the rotating shafts 318 and 320, and a pair of transport rollers 322 is installed downstream of the print mask 316 to sandwich the photographic paper 16. . The transport roller 322 is rotated in the direction of arrow A in FIG. 4 by the driving force of the motor 344, pulls out the leading end of the printing paper from the outer periphery of one layered winding section (left layered winding section in FIG. 4), and rotates the other. This is a configuration in which it is wound around a shaft 320.
[0019]
The printing paper 16 between the unwinding rotary shaft 318 and the print mask 316 is wound around a tension roller 346. A tension roller 348 is also provided downstream of the transport roller 322, and the printing paper 16 is wound around the tension roller 348. These tension rollers 346 and 348 can be moved in the direction perpendicular to the axis, so as to maintain a constant tension when the photographic paper is transported.
[0020]
On the printing optical path L below the print mask 316, a negative carrier 302 is provided, and a part of the long film F is sandwiched and fixed at a predetermined position. The film F is wound in layers on the rotating shafts 352 and 354, and a pair of transport rollers 356 as transport means is provided downstream of the negative carrier 302 to hold the film F therebetween. I have. The pair of transport rollers 356 are rotated in the direction of arrow B in FIG. 4 by the driving force of the motor 358, pull out the film F from the outer periphery of one layered winding section (the left winding section in FIG. 4), and rotate the other. This is a configuration in which it is wound around a shaft 354.
[0021]
The film F between the unwinding rotation shaft 352 and the negative carrier 302 is wound around a tension roller 368. Further, a tension roller 370 is provided downstream of the transport roller 356, and the film F is wound around the tension roller 370. These tension rollers 368 and 370 are movable in the direction perpendicular to the axis thereof, so that the tension at the time of transporting the film F is kept constant.
[0022]
A magnetic information reproducing unit 372 is provided between the tension roller 368 and the negative carrier 302 (details will be described later). Therefore, the film F passes through the magnetic information reproducing unit 372 and reaches the negative carrier 302. Also, on the upstream side of the magnetic information reproducing unit 372, an optical sensor 50 for detecting the presence or absence and the end of the film F, and that no magnetic information previously recorded on the film F at the time of manufacture or the like is recorded. An optical sensor 51 such as a barcode reader or a line sensor for detecting a mark is provided. For the end of the film, the end information can be obtained from the LSI card. However, in order to detect the end of the long roll-shaped film and the end of the film F without using the LSI card, the difference between the amount of transmitted light and the amount of reflected light is required. It can be determined by a preset identifier. This mark is optically applied to a simple camera or a negative film having no ordinary magnetic recording layer. The mark may be a physical mark, for example, one or a plurality of perforated rows or notches. In addition, the optical mark and the physical mark may be provided in a large laboratory when processing a simple camera or the like. As described above, if an optical or physical mark is provided in advance, it can be easily determined from the output signal of the optical sensor 51 that magnetic information is not recorded.
[0023]
A printing lens 374 and a black shutter 376 are arranged between the negative carrier 302 and the print mask 316. The black shutter 376 can be inserted or removed from the optical path L according to a drive signal from the driver 378. Further, the printing lens 374 can be moved along the optical path L in response to a drive signal from the driver 380, and thus the magnification can be changed.
[0024]
Between the negative carrier 302 and the light source 314, cut filters 382, 384, and 386 of C (cyan), M (magenta), and Y (yellow) are provided. These cut filters 382, 384, 386 are inserted or removed from the optical path L according to signals from the drivers 388, 390, 392, respectively.
[0025]
A light receiver 394 is disposed obliquely above the negative carrier 302. The light receiver 394 detects density information of an image photographed on the film F positioned on the negative carrier 302, and supplies the detected value to the control unit 396. The control unit 396 calculates an exposure correction amount based on the density information, corrects a reference exposure amount based on the calculation result, and according to the corrected exposure amount, the black shutter 376 and the cut filter 382. 384 and 386 are controlled.
[0026]
Further, the film F is provided with a transparent magnetic layer on the side opposite to the emulsion layer, and as shown in FIG. 1, perforations 14A are formed at predetermined intervals at the ends in the width direction. A track 14B for recording magnetic information is provided between the perforations 14A.
[0027]
As shown in FIGS. 1 to 3, the magnetic information reproducing unit 372 is provided with opposing rollers 254 and 256 adjacent to each other. These opposed rollers 254 and 256 are arranged at positions facing the tracks 14B of the film F transported by the transport rollers 356 (not shown).
[0028]
The magnetic information reproducing unit 372 is provided with a pedestal 228 fixed to a housing (not shown). A groove 280 extending in the vertical direction is formed in a lower portion of the pedestal 228, and a rectangular bearing 282 is slidably provided in the groove 280. A hole 284 is formed in the bearing 282, and the shaft 286 of the opposing rollers 254, 256 is rotatably inserted into the hole 284.
[0029]
The opposite roller 254 on the upstream side in the transport direction of the film F (the side opposite to the direction of the arrow R) can read the dirt removing member 258, and the opposite roller 256 on the downstream side can read the magnetic information recorded on the track 14B. The magnetic head 260 faces. The opposing rollers 254 and 256 are urged toward the dirt removing member 258 and the magnetic head 260 by a spring 288, and press the film F against the dirt removing member 258 and the magnetic head 260 with a predetermined force.
[0030]
The opposing roller 254, the bearing 282, and the spring 288 correspond to a pressing unit of the present invention.
[0031]
The magnetic head 260 is connected to a control unit (not shown) of the printer 300, and reads out magnetic information recorded on the track 14B and outputs the magnetic information to the control unit.
[0032]
As shown in FIGS. 1 and 2, the magnetic head 260 of the present embodiment has a substantially arc-shaped side sliding on the film F, and a core 261 embedded in the center in the width direction of the film F. Both sides are formed flat. Note that a gap 261A extending in a direction perpendicular to the transport direction of the film F is formed in a central portion of the core 261.
[0033]
On the other hand, the dirt removing member 258 of this embodiment is formed in substantially the same shape as the magnetic head 260, but has a slightly shorter width in the direction along the transport direction of the film F. The sliding surface of the dirt removing member 258 with the film F is finished smoothly like the sliding surface of the magnetic head 260.
[0034]
As shown in FIGS. 1 and 3, the dirt removing member 258 and the magnetic head 260 are fixed to the base plate 262. Guide portions 268 are provided on both sides of the base plate 262 along the transport direction of the film F (the direction of arrow R). The guide portion 268 protrudes toward the widthwise end surface of the film F, and the side surface 268A faces the widthwise end surface of the film F.
[0035]
The gap 261A between the side surface 268A of the guide portion 268 and the magnetic head 260 is set in accordance with the distance between the end surface of the film F on the side where the track 14B is formed and the track 14B, and the side surface 268A of the guide portion 268 is The gap 261A faces the track 14B when it comes into contact with the end face in the width direction of F. At this time, the substantially arc-shaped portion of the stain removing member 258 also faces the track 14B of the film F.
[0036]
As shown in FIG. 3, a guide case 270 is provided on the pedestal 228 adjacent to the transport path of the film F, and a protruding portion 262A protruding from the base plate 262 is housed in the guide case 270 so as to be able to protrude and retract. Have been. When the protrusion 262A protrudes and retracts from the inside of the guide case 270, the dirt removing member 258 and the magnetic head 260 move together with the base plate 262 along the width direction of the film F (the direction of arrow C and the direction opposite to the direction of arrow C). To move.
[0037]
In the guide case 270, a compression coil spring 272 is provided as urging means for urging the base plate 262 toward the film F along the width direction of the film F. The base plate 262 is held by the compression coil spring 272 at a position where the side surface 268A of the guide portion 268 abuts on the end face in the width direction of the film F.
[0038]
For example, when the film F conveyed on the pedestal 228 is meandered and the widthwise end of the film F passing near the base plate 262 is shifted in a direction away from the guide portion 268, the compression coil spring 272 is pressed. The side surface 268A of the guide portion 268 is moved together with the base plate 262 such that the side surface 268A of the guide portion 268 comes into contact with the widthwise end of the film F. Further, when the film F is displaced in the direction of pushing back the guide portion 268, the base plate 262 moves together with the displacement of the film F together with the guide portion 268, and the projecting portion 262A is pressed against the urging force of the compression coil spring 272. Pushed into case 270. As a result, the dirt removing member 258 and the magnetic head 260 provided on the base plate 262 always face the track 14B at a fixed distance from the widthwise end of the film F.
[0039]
The urging force of the compression coil spring 272 follows the meandering of the film F, easily moves the dirt removing member 258 and the base plate 262 on which the magnetic head 260 is provided, and applies unnecessary force to the film F. Not set In addition, both sides of the guide portion 268 in the film F transport direction are subjected to surface treatment such as chamfering so as not to damage the film F.
[0040]
Next, the operation of the present embodiment will be described.
When the long roll-shaped film set in the printer 300 is pulled out by the transport roller 356, the track 14B portion of the film F passes between the dirt removing member 258 and the facing roller 254, and then faces the magnetic head 260. It passes between the rollers 256. Here, the track 14B portion of the film F slides while being pressed against the dirt removing member 258 by the opposing roller 254, so that the deposits (dust and dirt) attached to the track 14B portion adhere to the dirt removing member 258. Removed.
[0041]
The magnetic head 260 reads magnetic information (information corresponding to each image frame) recorded on the track 14B from the conveyed film F, and the printer 300 performs an exposure process based on the read magnetic information.
[0042]
Since the track 14B from which dirt is removed slides on the magnetic head 260, dirt is less likely to be generated on the magnetic head 260. Therefore, the magnetic information recorded on the track 14B can be reliably read, and a high-quality print can be obtained based on the magnetic information.
[0043]
Since the film F has high rigidity and is hardly deformed, pressing the film F against the dirt removing member 258 by the opposing roller 254 improves the adhesion of the track 14B to the dirt removing member 258 and improves the dirt removing effect. Be sure.
[0044]
In this embodiment, the opposing roller 254 or the like is used as a pressing unit for pressing the film F against the dirt removing member 258, but a pad 292 biased by a leaf spring 290 may be used as shown in FIG. .
[0045]
The higher the pressure applied by the opposing roller 254 and the pad 292, the higher the dirt removal effect can be. However, in the case of the photographic film F, it is preferably 50 gf or more. Further, it is necessary to set the pressing pressure in consideration of the transportability, damage, and the like of the film F, and when these are considered, about 500 gf is the highest pressing pressure.
[0046]
The material of the dirt removing member 258 on which the transparent magnetic layer of the film F slides is preferably one which has excellent wear resistance and is not magnetized. In addition, the higher the coefficient of friction of the surface of the stain removing member 258, the greater the adhesion of stains, and the coefficient of friction is preferably 0.1 or more. The dirt removing member 258 may be made of a material having a friction coefficient of 0.1 or more, or may be subjected to a surface treatment to increase the friction coefficient.
[0047]
Specific examples of the material used for the stain removing member 258 include glass, ceramics, aluminum (for example, A5052), stainless steel (for example, SUS303), and other materials may be used. When the material is aluminum, the surface is preferably subjected to alumite treatment.
[0048]
In the dirt removing member 258 of the above-described embodiment, the portion facing the track 14B of the film F is formed in a substantially arc shape like the magnetic head 260, but the portion facing the film F has a shape other than the arc shape. It may be.
[0049]
For example, as shown in FIGS. 6 and 7, the dirt removing member 258 may be partially cut on the upstream side (the side opposite to the arrow R direction) of the arcuate portion. In the dirt removing member 258 shown in FIGS. 6 and 7, the upstream side of the center line CL by 0.3 mm is shaved by 0.15 mm from the top of the arc-shaped portion to be formed in a planar shape. The step between the arc-shaped portion and the planar portion is an inclined surface inclined by 30 ° with respect to the center line CL.
[0050]
As shown in FIG. 8, the dirt removing member 258 may be further deeply shaved on the upstream side, and as shown in FIG. 9, the upstream side and the downstream side of the arc-shaped portion are left with a predetermined width at the central portion. It may be cut into a flat shape. These are effective not only for attaching dirt to the dirt removing member 258 but also for forcibly removing dirt. In particular, the dirt removing member 258 having the shape shown in FIG. 9 has a high effect of removing fine dust and dust.
[0051]
Further, the portion of the dirt removing member 258 facing the track 14B of the film F may have an uneven shape. For example, as shown in FIG. 10, a plurality of small projections 294 extending in a direction intersecting with the transport direction of the film F (the direction of arrow R) is provided on a portion of the film F that contacts the track 14B (not shown). May be formed along the transport direction. Also in this case, it is effective to forcibly remove dirt attached to the film F.
[0052]
Further, in the case where the opposing roller 254 and the pad 292 are provided, when the leading end portion of the film F is conveyed, the film F is reliably inserted between the dirt removing member 258 and the opposing roller 254 (or the pad 292). The dirt removing member 258 may be temporarily retracted using a solenoid or the like so as to be guided, and a gap may be provided between the dirt removing member 258 and the opposing roller 254 (or the pad 292). The pad 292) may be retracted.
[0053]
Further, the stain removing member 258 of the above embodiment has substantially the same shape as the magnetic head 260, but may have any shape as long as it can remove stain without damaging the film F.
[0054]
In addition, the dirt removing member 258 in the above-described embodiment does not move due to the transport of the film F, but the dirt removing member 258 may be moved in accordance with the transport of the film F. For example, as shown in FIG. 11, the dirt removing member 258 may be a roller that rotates with the transport of the film F, and the dirt removing member 258 moves with the transport of the film F as shown in FIG. A belt may be used. When the dirt removing member 258 is a roller, a belt, or the like, the roller or belt may contact the film F and be driven, or may be forcibly moved by a motor or the like.
[0055]
The present invention also relates to a developing machine for developing a photographic film one by one, and a printer for printing an image on photographic paper for each developed film, developing the photographic paper, and cutting and sorting each image. It can also be applied to a so-called minilab (not shown) that performs DPE by combination with a processor, and further includes a film splicer, a developing machine, a testing machine, an attacher for returning the film to the cartridge, a detacher for removing the film from the cartridge, Application to a rewinding machine or the like for rewinding a film onto a processing reel is also possible.
(Test example)
FIG. 13 shows a case where a plurality of types of dirt removing members having different materials and shapes are prepared, and the number of film passages and the reproduction output (Peak-Peak) of the magnetic head when these dirt removing members are used and not used. It shows the relationship.
[0056]
The shape of the magnetic head in the table of FIG. 13 is the shape shown in FIG. 1, and the shape of the roller is the shape shown in FIG. Further, a film to which a large amount of dirt is forcibly adhered is used for the film so that the difference in effect can be easily understood.
[0057]
As a result of the test, when the number of passages increases, the adhesion of the dirt to the magnetic head increases and the reproduction output also decreases, but the reproduction output decreases less with the dirt removing member than without the dirt removing member. You can see that.
[0058]
Further, it has been found that the dirt removing member that is fixed than the roller has a higher dirt removing effect.
[0059]
In addition, it was found that the material of the stain removing member was higher in the effect of removing the stain of aluminum than in the case of stainless steel, and that the effect of removing the stain of the aluminum subjected to the alumite treatment was higher. Further, it was found that glass had the highest dirt removing effect among the tested materials.
[0060]
【The invention's effect】
As described above, the photographic film processing apparatus according to claims 1 and 2 removes the deposits attached to the photographic film with the removing member before reaching the magnetic head, so that the following excellent effects can be obtained. .
(1) It is possible to prevent dust, dust and the like from adhering to the magnetic head, and to reliably record or reproduce magnetic information over a long period of time.
(2) Maintenance (cleaning) of the magnetic head can be reduced.
(3) Since no abrasive or the like is used, deterioration of the magnetic head and the transport path can be minimized.
(4) Since the coefficient of friction of the sliding surface of the film is 0.1 or more, it is possible to efficiently remove deposits.
(5) Since the spring of the pressing means urges the roller in contact with the photographic film toward the removing member, there is an excellent effect that the attached matter can be removed efficiently. Further, even a photographic film having high rigidity can be reliably slid on the removing member, and has an excellent effect that the attached matter can be surely removed.
[0061]
In the photographic film processing apparatus according to the second aspect, it is possible to scrape off the deposits attached to the magnetic recording layer, and it has an excellent effect that the deposits can be removed more efficiently than a smooth surface.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration around a magnetic head of a magnetic information reproducing unit to which the present invention is applied.
FIG. 2 is a side view of the magnetic information reproducing unit viewed from a film side.
FIG. 3 is a sectional view of a magnetic information reproducing unit in a direction orthogonal to a film transport direction.
FIG. 4 is a schematic configuration diagram of a printer to which the present invention is applied.
FIG. 5 is a side view of the vicinity of a stain removing member of a magnetic information reproducing unit according to another embodiment.
FIG. 6 is a perspective view of a stain removing member according to still another embodiment.
FIG. 7 is a side view of the dirt removing member shown in FIG.
FIG. 8 is a perspective view of a stain removing member according to still another embodiment.
FIG. 9 is a perspective view of a stain removing member according to still another embodiment.
FIG. 10 is a perspective view of a dirt removing member according to still another embodiment.
FIG. 11 is a side view of the vicinity of a stain removing member of a magnetic information reproducing unit according to still another embodiment.
FIG. 12 is a side view of the vicinity of a stain removing member of a magnetic information reproducing unit according to still another embodiment.
FIG. 13 is a graph of test results showing the relationship between the reproduction output of the magnetic head and the number of film passages when the stain removing member is variously changed.
[Explanation of symbols]
F film (photographic film)
254 opposed roller (pressing means)
258 Stain removal member
260 magnetic head
282 bearing (pressing means)
288 spring (pressing means)
290 leaf spring (pressing means)
292 pad (pressing means)
300 Printer (photographic film processing equipment)
356 Transport roller (transport means)

Claims (2)

Conveying means for conveying a photographic film provided with a track for recording magnetic information between a plurality of perforations formed at the film width direction end,
A magnetic head provided to face the track for recording or reproducing the magnetic information,
A friction coefficient of a film sliding surface, which is provided on the upstream side in the transport direction of the photographic film from the magnetic head so as to face the track and removes attached matter on the photographic film before reaching the magnetic head, is 0.1%. A removing member as described above,
A roller that contacts the photographic film, and a pressing unit that includes a spring that biases the roller toward the removing member;
A photographic film processing apparatus comprising: 2. The photographic film processing apparatus according to claim 1, wherein the removing member has a film sliding surface having an uneven surface.

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