JPH08292501A - Photographic film processing device - Google Patents

Abstract

PURPOSE: To surely record and read magnetic information on/from a magnetic recording layer on photographic film, to obtain a clear image without damage and to reduce the heaped quantity of sediment such as dust or the like at a magnetic head part. CONSTITUTION: A head part 186 including a head core 184 is provided to have nearly the same width of the width of the magnetic truck of negative film on the sliding surface 182 of a read head 140, and the head part 186 is projected by a step part 188 formed at both end parts in a width direction, so that only the head core 184 is brought into contact with the negative film. Also, a notched part 192 is formed on a downstream side in the carrying direction of the negative film with respect to a head gap as shown by an arrow and the head part 186 at a point where the negative film is attached and detached in the read head 140. A recording head is made to have a similar shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film processor, and more particularly to a photographic film processor for collecting information other than images recorded on the photographic film to process the photographic film.

[0002]

2. Description of the Related Art Photographing information regarding an image photographed by a camera (for example, presence / absence of a strobe, distance to a subject,
Information such as the focus, the color temperature of the illuminating light of the subject, the date when the image was taken, and the user ID information) is effective for printing or displaying on the display. Therefore, as a method of recording information on a photographic film, particularly a negative film, a transparent magnetic material 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. It has been proposed (for example, International Publication No. WO 90/04205). According to this,
It is possible to store information corresponding to each image frame, and in the laboratory, it is also possible to record the exposure amount at the time of printing for each image frame when printing on photographic paper.

Since the actual recording area (magnetic track) is preferably provided at a position which has little influence on the image recorded on the photographic film, it is arranged at the edge portion of the photographic film outside the image screen. A magnetic head is provided on the negative carrier, which is a means for transporting the negative film, corresponding to the magnetic track, and information is recorded / read out as the negative film is transported.

FIG. 11 shows a commonly used magnetic head 200. The magnetic head 200 has an arc-shaped sliding surface 202, and the periphery thereof is surrounded by a magnetic shield case 204. Magnetic shield case 204
Is hollowed out in a rectangular shape at substantially the center of the sliding surface 202 of the magnetic head, and the head core surface 206 is arranged at the center of the rectangular shape. Head core surface 206 and magnetic shield case 20
The resin for holding the head core surface is exposed in the gap 208 with respect to No. 4. A head gap 210 is arranged at the apex of a circular arc at the center of the sliding surface 202.

On the other hand, due to relative sliding between the magnetic head and the photographic film, dust and dirt in the air, shavings generated from the photographic film, processing liquid components, etc. may be deposited on the surface of the magnetic head. Have deteriorated the performance for recording and reproducing information. In order to reduce the deterioration of the photographic performance of photographic film as much as possible, the coating amount of the magnetic material on the photographic film is the same as that of ordinary magnetic media (for VTR, ATR, FD, etc.).
It was reduced to several tenths to one hundredths, and the adverse effect of the deposit was more serious.

In order to solve this problem, conventionally, a polishing layer containing a sufficient amount of abrasive is provided on the surface of the photographic film to scrape off dust and the like accumulated on the magnetic head by the abrasive action of the abrasive during sliding. I am trying.

[0007]

However, the image on the photographic film is photographed as large as the film width, and the width on the film usable as a magnetic track is only a few mm (2 to 4 mm). Absent. For this reason, the sliding surface of the magnetic head comes into the image surface recorded on the photographic film, and the contact surface causes damage to the image recording surface.

Further, in the method of removing the dust accumulated on the magnetic head by the polishing effect of the abrasive, the removal of the deposit is not sufficient, and the surface of the magnetic head is scraped off together with the deposit, and this scrap is an image. It may cause scratches on the surface.

The present invention takes the above facts into consideration, and provides a photographic film processing apparatus capable of surely recording and reading magnetic information on a magnetic recording layer on a photographic film and obtaining a clear image without scratches. The purpose is to provide.

Further, in addition to the above objects, it is another object of the present invention to reduce the amount of deposits such as dust in the magnetic head portion.

[0011]

A photographic film processing apparatus according to claim 1, wherein the photographic film processing apparatus includes a conveying means for conveying a photographic film provided with a magnetic recording layer for recording information, and magnetic recording on the magnetic recording layer. Or a head core surface which is provided for reading information recorded on the magnetic recording layer and is in sliding contact with the magnetic recording layer of the photographic film carried by the carrying means, and a width dimension of the head core surface in the photographic film carrying direction is the magnetic field. And a magnetic head having a first cutout portion that recesses at least one end in the width direction of the head core surface so as to substantially match the width dimension of the recording layer.

According to a second aspect of the present invention, there is provided a photographic film processing apparatus which conveys a photographic film provided with a magnetic recording layer for recording information, and magnetically records on the magnetic recording layer or the magnetic recording layer. A head core surface which is provided for reading the information recorded on the recording medium and is in sliding contact with the magnetic recording layer of the photographic film conveyed by the conveying means, and a part of the head core surface is recessed in a direction perpendicular to the photographic film conveying direction. And a magnetic head having a second notch portion.

According to a third aspect of the present invention, there is provided a photographic film processing apparatus, which conveys a photographic film provided with a magnetic recording layer for recording information, and magnetically records on the magnetic recording layer or the magnetic recording layer. A head core surface which is provided to read information recorded on the magnetic recording layer of the photographic film conveyed by the conveying means, and a width dimension of the head core surface in the photographic film conveying direction is the width dimension of the magnetic recording layer. A first cutout portion that recesses at least one end in the width direction of the head core surface so as to substantially coincide with each other, and a second cutout portion that recesses a part of the head core surface in a direction perpendicular to the photographic film transport direction. And a magnetic head.

According to a fourth aspect of the present invention, in the photographic film processing apparatus according to any one of the first to third aspects, a gap between the periphery of the head core of the magnetic head and the casing is filled with resin, and the head core and the casing are formed. The gap with the casing is 0.2 mm.

According to a fifth aspect of the present invention, in the photographic film processing apparatus according to any one of the first to third aspects, the magnetic recording head gap in the magnetic head is larger than the magnetic reading head gap.

According to a sixth aspect of the present invention, in the photographic film processing apparatus according to any one of the first to third aspects, the head core surface of the magnetic head is covered with a hard coating.

[0017]

According to the first aspect of the invention, the magnetic head for recording and reading information on the magnetic recording layer on the photographic film has the head core surface and the first cutout portion.
At least one end of the first notch portion in the width direction of the head core surface is recessed so that the width dimension of the head core surface in the photographic film transport direction substantially matches the width dimension of the magnetic recording layer. As a result, the head core surface of the photographic film facing the magnetic recording layer is projected, and a height difference is generated between the head core surface and the first cutout portion. Therefore, when facing the photographic film, the head core surface is brought into contact with the magnetic recording layer in the same width dimension to read the magnetic information recorded in the magnetic recording layer or record the magnetic information. On the other hand, the first cutout portion does not come into contact with the photographic film even when the head core surface comes into contact with the photographic film due to the height difference between the head core surface that can come into contact with the photographic film.

Therefore, it is provided adjacent to the magnetic recording layer,
The magnetic head does not come into contact with the area on the photographic film on which the image is recorded, and it is possible to prevent scratches due to the contact.

According to the second aspect of the invention, the magnetic head for recording and reading information on the magnetic recording layer on the photographic film has a head core surface and a second cutout portion. The second cutout portion is formed by recessing a part of the head core surface in a direction perpendicular to the photographic film transport direction of the head core surface. By providing the second cutout portion, a height difference is formed on the head core surface, whereby dust such as dust of the developing treatment liquid accumulated along the transport direction of the photographic film can be removed and removed. Therefore, the amount of deposits deposited on the magnetic head surface can be reduced.

According to the third aspect of the invention, the magnetic head for recording and reading information on the magnetic recording layer on the photographic film has a head core surface and first and second notches. . At least one end of the first cutout portion in the width direction of the head core surface is recessed so that the width dimension of the head core surface in the photographic film transport direction substantially matches the width dimension of the magnetic recording layer. The second cutout portion is formed by denting a part of the head core surface in a direction perpendicular to the photographic film transport direction of the head core surface. That is, these two cutouts are provided in parallel and at right angles to the head core surface. As a result, only the head core surface can come into contact with the photographic film by the first cutout portion, and the second cutout portion forms a height difference on the head core surface so that dust falls off. Therefore, there is no contact with the image recording surface on the photographic film, and in addition to this, the amount of deposits on the head core surface can be reduced.

According to a fourth aspect of the present invention, in the head core surface of the magnetic head, the gap between the head core periphery and the casing is filled with resin, and the gap between the head core and the casing is 0.2 mm or less. It has become. That is, the distance between the head core and the casing is 0.2 mm.
The resin is exposed below. Since the casing having the magnetic shield function is close to 0.2 mm or less with respect to the periphery of the head core, the exposed portion of the resin can be made small, and the noise caused by the deterioration of the magnetic shield function by the resin can be sufficiently generated. It can be reduced.

According to the fifth aspect of the invention, since the magnetic recording head gap is larger than the magnetic reading head gap, the leakage magnetic field from the head gap increases in the recording head, and recording can be performed easily. The head can also reliably read high-frequency signals.

According to the sixth aspect of the invention, since the head core surface of the magnetic head is coated with the hard coating, the wear resistance and durability of the magnetic head are improved, and dust due to scraps of the magnetic head causes dust. Can be prevented.

[0024]

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a negative carrier 10 applied to this embodiment. This negative carrier 10 has a photographic film (hereinafter referred to as "negative film 12", FIG. 6A).
(See)) is to be installed. Further, FIG. 2 shows a printer processor 160 to which the negative carrier 10 is attached.

The printer processor 160 comprises a printer section 162 and a processor section 164, and a work table 16 protruding from the printer section 162.
The negative carrier 10 is mounted on the negative carrier 10 and the light emitted from the light source unit 168 arranged under the work table 166 is applied to the negative film 12 mounted on the negative carrier 10.
To reach the printing section 170. A printing paper (not shown) drawn from the magazine 172 is arranged in the printing section 170, and the light transmitted through the negative film 12 is imaged on the printing paper to print an image.

The photographic printing paper on which the image has been printed is sent to the processor section 164 and subjected to predetermined development processing such as color development, bleach-fixing, washing with water and drying, and then cut into image frames. It is ejected as a photo print.

As shown in FIG. 6 (A), one end of the negative film 12 loaded in the negative carrier 10 is retained by the spool shaft 16 of the cartridge 14 and wound in layers to be accommodated. A large number of image frames 12A in which images are recorded at predetermined intervals along the longitudinal direction are provided. The negative film 12 has a perforation 18 formed at one end in the width direction in accordance with the position of each image frame 12A, and magnetic information is recorded at a position between the perforations 18 and adjacent to the image frame 12A. A track 20 is provided.

This magnetic track 20 is a cartridge 1
It is formed on the back surface of the negative film 12 which is the outer side in the state of being wound up on the image recording medium 4, and the information such as information at the time of photographing the image recorded in each image frame 12A, the print size at the time of performing the print processing, the exposure condition, etc. Various information is recorded. The magnetic track 20 provided at the end opposite to the perforation 18 mainly records information at the time of photographing by a photographing device such as a camera.

A bar code 17 indicating a DX code is recorded on the end of the negative film 12 on the side opposite to the side where the perforations 18 are formed, and the tip of the negative film 12 in the upper part of FIG. 6 (A) is recorded. A notch 13 is formed in the part.

The front and back of the negative film 12 can be discriminated by the side of the bar code 17 and the perforation 18 in the width direction of the negative film 12. In addition, the negative film 12 has a back surface side (an outer surface side when wound around the cartridge 14).
A magnetic recording layer is coated on the negative film 12, and magnetic information can be recorded on and read from the magnetic track 20 by sliding the magnetic head from the back side of the negative film 12.

As shown in FIG. 6B, in the cartridge 14, the outlet of the negative film 12 is closed by the door 22, and the door shaft 22A is rotated to rotate the door 2.
By opening 2, the negative film 12 can be pulled out. Further, on one side surface of the cartridge 14, display holes 24A, 24B, 24C, 24D for identifying the processing state of the negative film 12 housed therein are provided around the spool shaft 16. By rotating the display plate 14A so as to display the display hole 24D, it is possible to identify that the negative film 12 contained in the cartridge 14 has been developed. In this embodiment, the negative film 12 accommodated in the cartridge 14 which is displayed as being developed by the display hole 24D is printed.

As shown in FIG. 1, a negative carrier 10
Is attached to one end of the pedestal portion 30 (see FIG. 1).
(Not shown) is loaded in the cartridge loading section 32.
And the negative film 1 pulled out from the cartridge 14.
A film accommodating portion 34 capable of accommodating 2 is provided, and a central portion is covered with a cover 36.

The cover 36 is normally locked by a lock lever 42 that engages with the locking hole 40 and a lock plate (not shown) that engages with the slide button 44 in a closed state covering the upper surface of the pedestal portion 30. By releasing this locked state, the bracket 38 is rotated about its center to open the upper surface of the pedestal portion 30.

As shown in FIG. 3, a transport path 46 for the negative film 12 is formed on the upper surface of the pedestal portion 30 covered by the cover 36, and an opening 48 for printing is formed at the center of the transport path 46. It is provided. In addition, the cover 36 includes
An opening 50 is provided so as to face the opening 48, and a pressure bonding plate 68 is arranged between the pedestal 30 and the cover 36. The crimping plate 68 is also formed with an opening 68A facing the openings 48 and 50.

In the negative carrier 10, the image frame 12A of the negative film 12 is arranged in the opening 48, and the negative film 12 is sandwiched between the peripheral edge of the opening 48 and the peripheral edge of the opening 68A of the pressure plate 68. The light source unit 168 of the printer processor 160 below the opening 48 irradiates the negative film 12 with the light for printing. The light applied to the negative film 12 is emitted from the opening 50 and imaged on the printing paper of the printing unit 170. The peripheral edge of the opening 48 is slightly separated from the surface of the negative film 12 (see FIG. 4), which causes the light irradiated to the negative film 12 to be refracted at the peripheral edge of the opening 48. The image is prevented from becoming unclear or dark when the image is formed on the photographic paper.

As shown in FIG. 3, the conveyance path 46 of the pedestal portion 30 is provided with guides 52 at both ends in the width direction and a plurality of conveyance rollers 54 whose outer peripheral portions are partially exposed from the guides 52. Is provided. The driving force of the carry motor 58 is transmitted to these carry rollers 54 via an endless timing belt 62 wound around a pulley 60. Further, as shown in FIG. 4, the cover 36 includes
The idle roller 5 faces each of the transport rollers 54.
6 is rotatably provided, and holds the negative film 12 between the transport roller 54 and the idle roller 56.

Therefore, the driving force from the transport motor 58 is transmitted to rotate the transport roller 54, and the idle roller 56 which is opposed to the idle roller 56 is rotated to follow the negative film 12.
When the negative film 12 is sandwiched, the negative film 12 can be accurately conveyed in the conveying direction (arrow A direction) and the opposite direction (arrow B direction) in which the negative film 12 is conveyed frame by frame during printing.

On the other hand, as shown in FIGS. 1 and 3 to 5, the cartridge loading portion 32 is provided with a housing 64 having a substantially trapezoidal shape and into which the cartridge 14 is loaded. The pedestal portion 30 side of the upper surface of the housing 64 is inclined toward the transport path 46, and the negative insertion portion 66 is provided.
Are formed. The negative insertion portion 66 is provided on the holding member 6
The 6A and the guide 66B provided on the cover 36 serve as an insertion port for the so-called strip negative film 12 not accommodated in the cartridge 14 into the transport path 46.

In the housing 64, the cartridge 1
4 is provided with an opening through which a pair of guide rods 7 are provided to one end side of the negative film 12 in the conveyance width direction.
0 is projected. A cartridge holder 72 is slidably attached to the guide rod 70 toward the housing 64.

The cartridge holder 72 is provided with a recess 72A for accommodating the lower portion of the cartridge 14 at the center thereof.
A holding lever 74 is rotatably attached to the opposite side of the pedestal portion 30 and the film accommodating portion 34. This restraint lever 7
4, a biasing means such as a torsion spring (not shown) holds the upper end of the cartridge 14 in contact with the upper end of the cartridge 14 housed in the recess 72A. When the cartridge 14 is mounted in the cartridge holder 72 in this state, the cartridge 14 is held by the cartridge holder 72.

The cartridge 14 is loaded by pushing the cartridge holder 72 into the housing 64 while being mounted in the cartridge holder 72. A lock lever 76 and a slide button 78 are provided on the pedestal portion 30, and a claw portion 76A at the tip of the lock lever 76 is projected toward the guide rod 70 by the urging force of an urging means (not shown) such as a spring. The cartridge holder 72 is brought into contact with the cartridge holder 72 to prevent the cartridge holder 72 from moving in the drawing direction from the housing 64.
Further, by retracting the claw portion 76A of the lock lever 76 by sliding the slide button 78, the cartridge 14 can be pulled out from the housing 64 together with the cartridge holder 72.

As shown in FIG. 5, a holding lever 80 is mounted on the top of the housing 64. The restraining lever 80 has a restraining roller 82 attached to the tip end thereof, and is biased by a biasing means such as a spring (not shown) so that the restraining roller 82 is on the lower side. 6
When it is pushed into the inside of the cartridge 4, the pressing roller 82 abuts against the upper surface of the cartridge 14 and holds it, and holds the cartridge 14 so as not to rotate unnecessarily.

As shown in FIG. 3, the cartridge holder 72 is rotatably provided with a shaft 84 that engages with the spool shaft 16 of the cartridge 14 housed in the recess 72A. Further, the cartridge loading section 32 is provided with a drive box 86 in which a door driver 88 and a spool driver 90 project toward the housing 64, and is mounted on the cartridge holder 72 to push the cartridge 14 into the housing 64. By inserting, the door driver 22 and the spool driver 90 are engaged with the door shaft 22A of the cartridge 14 and the spool shaft 16, respectively.

The driver box 86 includes a pulley 9
Endless timing belts 96A and 9 wound around 4A and 94B and between pulleys 94C and 94D, respectively.
The driving force is transmitted from the delivery motor 92 via 6B. The spool driver 90 drives the delivery motor 92 to drive the spool shaft 16 of the cartridge 14.
Is rotated in the feeding direction of the negative film 12 from the cartridge 14 and the rewinding direction of the negative film 12. By the rotation of the spool shaft 16, the negative film 12 is sent out from the cartridge 14 and the negative film 12 is wound around the cartridge 14.

The door driver 88 is adapted to rotate the door shaft 22A of the cartridge 14 in the opening direction or the closing direction of the door 22.
May be driven by the driving force of the delivery motor 82, and the door driver 22 may be controlled by the door driver 88.
When A is pressed and engaged, the door driver 88 moves the door shaft 2
2A is rotated in the opening direction of the door 22, and the cartridge 1
Various driving methods such as rotating the door 22 in the closing direction may be used when the four are separated.

On the other hand, as shown in FIG. 4, the film accommodating portion 34 provided so as to face the cartridge loading portion 32 is a film winding for accommodating the negative film 12 in the housing 100 by winding it around the winding shaft 102. Toribe 104
And a take-up motor 106 for driving the take-up shaft 102 to rotate, and a discharge cover 108 is provided on the upper part of the housing 100. 108 and guide 118
And is fed into the film winding section 104.

A guide roller 12 is provided at the lower end of the film winding section 104 so as to extend toward the winding shaft 102 and is provided at the tip.
A guide lever 122 to which 0 is attached is provided, and the guide lever 122 is biased by a biasing means (not shown) such as a spring (not shown) so that the guide roller 120 contacts the peripheral surface of the winding shaft 102. Therefore, the negative film 12 fed to the film winding unit 104 is guided and sandwiched between the guide roller 120 and the winding shaft 102 by the guide lever 122.

Further, as shown in FIG. 3, the winding shaft 10
2 is between the pulleys 110A and 110B and the pulley 110
The driving force of the winding motor 106 is transmitted via the endless belts 112A and 112B wound around C and 110D, respectively, so that the winding motor 106 rotates. For this reason,
By rotating the take-up shaft 102 in the take-up direction of the negative film 12 (clockwise in FIG. 4), the negative film 12 sandwiched between the take-up shaft 102 and the guide roller 120 is layered on the take-up shaft 102. The winding shaft 102 is wound up and accommodated.
Is rotated in the direction opposite to the winding direction, so that the negative film 12 wound around the winding shaft 102 is transferred to the conveying path 4
Sent to 6.

Further, as shown in FIG. 4, the guide 11
One end of 8 is connected to the shaft 116. As shown in FIG. 3, the shaft 116 is connected to a solenoid 126 via a lever 124. For this reason,
When the solenoid 126 is not operating, the guide 1
The tip of 18 moves upward and guides the negative film 12 fed from the conveying path 46 to the film winding section 104,
By energizing the solenoid 126, the guide 11
The leading end of the negative film 8 moves downward to the film discharge portion 127 provided at the center of the upper surface of the discharge cover 108.
The conveying path of the negative film 12 is switched so as to guide the film 2. This allows strips of negative film 12
The film can be directly discharged without being wound into the film winding unit 104 and housed therein.

By the way, as shown in FIG. 1, an opening 128 is formed in the cover 36 on the cartridge loading portion 32 side of the opening 50, and the magnetic head portions 132, 134 and the sensor are formed in the opening 128. The part 136 is arranged.

A read head 140 for reading the magnetic information recorded on the magnetic track 20 of the negative film 12 and a recording head 142 for recording magnetic information on the magnetic track 20 of the negative film 12 are provided in each of the magnetic head portions 132, 134. And are provided. These read heads 14
0 and the recording head 142 are connected to a control unit (not shown), and are connected to a printing control circuit (not shown) of the printer processor 160 via this control unit.

On the other hand, in the transport path 46 of the pedestal portion 30, the backup roller 14 facing the read head 140 and the recording head 142 of the magnetic head portions 132 and 134, respectively.
4A and 144B are provided, and the negative film 12 is provided by these backup rollers 144A and 144B.
The magnetic track 20 of the read head 140, the recording head 1
Each of the 42 is closely contacted.

The magnetic head portion 132 faces one end of the negative film 12 in the width direction, facing the magnetic track 20 on which information at the time of photographing is mainly recorded, and the magnetic head portion 134 forms the magnetic head portion. It faces the magnetic track 20 at the end opposite to the portion 132.

In the magnetic heads 132 and 134, when the image frame 12A is arranged in the opening 48, the read head 140 has two image frames 12A and two image frames 12A and 3A before the exposed image frame 12A. 12A and the magnetic tracks 20 corresponding to 12A. Therefore, when the image frame 12A is disposed in the opening 48, the reading head 140 is in contact with the non-recording area between the magnetic tracks 20 adjacent to the image frame 12A, and therefore reading is not performed. On the other hand, image frame 12A
When the negative film 12 is frame-fed and conveyed to expose, the read head 140 slides on the magnetic track 20 corresponding to one image frame 12A at a constant speed, and the magnetic field recorded on the magnetic track 20 is read. It is designed to read information.

In the magnetic head portions 132 and 134, the recording head 142 is arranged adjacent to the reading head 140. Therefore, when the image frame 12A is arranged in the opening 48, it comes into contact with a part of the magnetic track 20. When the image frame 12A has finished exposure and is being frame-fed and conveyed, the image frame 12A is slidably contacted over the two magnetic tracks 20 across the non-recording area, and is slidably contacted to the magnetic tracks 20 for each unit at a constant speed. Because I can't
When the frame is fed in the forward path, the recording head 1
No. 42 does not record magnetic information on the magnetic track 20. On the other hand, after the exposure of all the images on the negative film 12 is completed, the conveying direction is reversed and the negative film 12
When the sheet is conveyed (returned) to the conveying path 46 again, since the exposure is completed, it is not necessary to perform the frame feeding conveyance, and the whole negative film 12 is conveyed at a constant speed. The recording head 142 is attached to the magnetic track 2
It is designed to come into sliding contact with 0 on at a constant speed.

As a result, the negative film 12 conveyed (outward) from the cartridge loading section 32 side toward the opening section 48 is read by the read head 14 of the magnetic head sections 132 and 134.
After the magnetic information of each image frame 12A recorded on the magnetic track 20 is read by 0, each image frame 12A is sequentially arranged in the opening 48, and printing is performed based on the read magnetic information. It has become. When the printing is completed, the conveying direction is reversed and the negative film 12 is rewound on the conveying path 46 again at a constant speed (return path), and accordingly, the recording heads 142 of the magnetic head portions 132 and 134 are moved to the negative film 12 side. The magnetic information is recorded by sliding on all the magnetic tracks 20 at a constant speed.

On the other hand, in the conveyance path 46, between the opening 48 and the backup rollers 144A and 144B facing the magnetic heads 132 and 134, LEDs 146A and 146B facing the sensor 136 are provided on both sides in the width direction, respectively. It is arranged. These LEDs 146A, 146B
Are the optical sensors 1 arranged in the sensor unit 136, respectively.
It faces 36A and 136B and is connected to a control unit (not shown).

LED provided on the magnetic head 134 side
The 146A and the optical sensor 136A are adapted to detect the perforation 18 indicating the position of the image frame 12A formed on the negative film 12. In the control unit (not shown), each of the image frames 12A can be accurately arranged in the opening 48 by detecting the perforation 18, and at the same time, the reading head 1
The magnetic information read by 40 indicates which image frame 1
2A and the recording head 142 records magnetic information on a predetermined magnetic track 20 for each image frame 12A. In addition, the magnetic head unit 13
LED 146B and optical sensor 136B provided on the second side
Detects the bar code 17 formed on the negative film 12 at the end opposite to the perforation 18.

Further, as shown in FIG. 3, the pedestal portion 30
A film sensor 148 for detecting passage of the negative film 12 fed into the transport path 46 from the leading end is provided at the center of the transport path 46 of the cartridge loading section 32 side, and in the vicinity of the LEDs 146A, 146B. An image sensor 150 for measuring the image density of each image frame 12A of the negative film 12 is provided.

The film sensor 148 and the image sensor 150 are connected to a control unit (not shown). Further, the control unit is connected to the carry motor 58, the feed motor 92, and the winding motor 106, and is provided with a cartridge sensor for detecting whether or not the cartridge 14 is loaded in the cartridge loading section 32.

In the control unit (not shown), the transport motor 58, the feed motor 92 and the winding motor 10 are operated by a print start signal from the printer processor 160 or by operating a print start switch (not shown).
6 is started to start the conveyance of the negative film 12, and when the film sensor 148 detects the passage of the leading end of the negative film 12, the detection results of the optical sensors 136A and 136B of the magnetic head portions 132 and 134 and the sensor portion 136 It is confirmed whether the negative film 12 has been fed without making a mistake on the front and back sides, and based on the magnetic information and the optical information recorded on the negative film 12, each image frame 12A is accurately placed in the opening 48 and the printing operation is performed. When the printing is completed and the printing is completed, new magnetic information is recorded as necessary.

Next, referring to FIG. 7, the read head 14 described above is used.
0 and the recording head 142 will be described in detail.

As shown in FIG. 7A, the read head 140 is composed of a magnetic shield case 180 and a head core 184 provided on the sliding surface 182.
The magnetic shield case 180 is made of permalloy or the like,
The head core 184 is not affected by the surrounding magnetic field.

The sliding surface 182 has an arc shape having an appropriate curvature along the conveying direction of the negative film 12 from the viewpoint of the wear resistance of the head core 184 and the contact property with the negative film 12. The curvature of R is determined from the wear resistance and the contact with the negative film 12.

At the center of the sliding surface 182, the magnetic track 2
0, two head cores 184A and 184B corresponding to the number of two tracks are arranged parallel to the transport direction facing the tracks, and a head gap for reading magnetic information is provided at the center of each of the head cores 184A and 184B. 18
5 is formed.

In the gap 190 between the head cores 184A and 184B and the magnetic shield case 180, the head core 18 is
The resin holding 4 is exposed. The magnetic shield case 180 has a sliding surface 182 on which the head core 18 is attached.
4A, 184B and the shape of the head core surface constituted by these gaps, the width dimension L and the length dimension M of the gap 190 are substantially equal to each other and are uniformly 0.2 mm or less. As a result, the area of the exposed portion of the resin is made smaller than in the conventional case (see FIG. 11), and the generation of noise due to the resin is reduced. 0.2 m
If it exceeds m, the generation of noise due to the resin cannot be sufficiently reduced.

The head cores 184A and 184B, the gaps between them, and the gap 190 form a head portion 186 on the sliding surface 182. The arcuate width dimension of the head portion 186 is the width of the magnetic track 20 on the negative film 12 in the conveying direction. It is almost equal to the size.

Further, a step portion 188 as a first notch portion is provided at both ends of the sliding surface 182 in the arcuate width direction in the direction parallel to the conveying direction of the negative film 12, whereby the head portion 186 is provided. The height difference is formed between the apex of the head portion 186 and the step portion 188. The height difference is within the range of several 100 μm to several mm,
The stepped portion 188 does not come into contact with the negative film 12.

Therefore, the sliding surface 182 of the read head 140
Is provided with a head portion 186 including a head core 184 with a width substantially equal to the width of the magnetic track 20 of the negative film 12, and the head portion 186 is protruded by step portions 188 formed at both ends in the width direction of the head core 184, Only 184 is in contact with the negative film 12.

On the other hand, the sliding surface 182 of the recording head 142
Has a shape similar to that of the sliding surface 182 of the read head 140 and has a head portion 18 having a width dimension substantially equal to that of the magnetic track 20.
6 and a step portion 188 are formed. This allows
Also in the recording head 142, only the head core 184 is in contact with the negative film 12.

Further, the reading head 140 and the recording head 1
The gap length of the head gap in 42 is larger in the recording head 142 than in the reading head 140. As a result, in the recording head 142, since the leakage magnetic field from the head gap increases, recording becomes easy, while in the reading head 140, a high-frequency signal can be read reliably. As an example, in this embodiment, the gap length of the recording head 142 is 5 μm, and the gap length of the reading head 140 is 2.5 μm.

Next, the operation of this embodiment will be described. When the image recorded on the negative film 12 by the printer processor 160 is printed on photographic paper to produce a photographic print, the cartridge 14 containing the negative film 12 is inserted into the cartridge loading unit 3 of the negative carrier 10.
Load 2

On the other hand, when the image recorded on the strip negative film 12 is printed, the strip negative film is inserted from the negative insertion portion 66 provided on the upper surface of the housing 64.

Thereafter, the negative film 12 is pulled out from the cartridge 14 and the optical sensor 13 of the sensor section 136 is pulled out.
The position of each image frame 12A is judged from the perforation 18 detected by 6A, and the magnetic information relating to each image frame 12A recorded on the magnetic track 20 is read by the read head 140 of the magnetic head unit 132 or the magnetic head unit 134.
While reading by, the image frame 12A is sequentially opened in the opening 4
It is arranged at No. 8 and baking work is performed (outward route).

The image frame 12A portion that has been printed is
The film is wound up and stored in the film storage portion 34, and when the printing operation is completed, it is rewound into the cartridge 14. New magnetic information relating to the image frame 12A for which image printing has been completed is provided to the recording head 142 of the magnetic head units 132 and 134.
The read head 140 confirms whether or not accurate recording is performed by recording or correcting at a predetermined position.

Next, the operation of the read head 140 and the recording head 142 will be described with reference to the magnetic head portion 134 shown in FIG. Note that FIG. 8A shows the magnetic head portion 134.
8B shows a case where the magnetic head portion 134 in FIG. 8A is viewed from above (in the direction of arrow D).
8C is a view of the magnetic head portion 134 in FIG. 8A viewed from the downstream side in the transport direction of the negative film 12 (direction of arrow E).
The case is shown.

After the baking work is completed, the film accommodating portion 34
The negative film 12 wound up and contained in the cartridge 14 is conveyed and passed through the magnetic head portion 134 in the direction of the arrow F, and is rewound into the cartridge 14.

At this time, the negative film 12 has the recording head 142, the backup roller 144B, and
The reading head 140 and the backup roller 144A sandwich the sheet and the sheet is conveyed (see FIG. 8A).

The negative film 12 is the first recording head 1
42 and the backup roller 144B. The head portion 186 of the recording head 142 protrudes by providing the step portion 188 (see FIG. 8C), and the head core 184 contacts the opposing magnetic tracks 20 on the negative film 12. The width of the head portion 186 is substantially equal to the width of the perforations 18 and the magnetic tracks 20 provided on the negative film 12 (see FIGS. 8B and 8C), and the negative film 12 is conveyed. When the image frame 12A is sent as a result, the recording head 142 records magnetic information on the magnetic track 20 in contact therewith.

On the other hand, the step portion 188 has a height difference with the apex of the head portion 186 (see FIG. 8C), and when the negative film 12 is conveyed, the image frame 1 on the negative film 12 is conveyed.
It does not come into contact with 2A and passes over it (see FIGS. 8B and 8C).

The magnetic track 20 is recorded by the recording head 142.
The negative film 12 having the magnetic information recorded thereon is conveyed after the recording is completed, and is sandwiched between the read head 140 and the backup roller 144B which are arranged on the downstream side in the conveying direction.

Like the recording head 142, the reading head 140 has a head portion 186 and a step portion 188 on its sliding surface 182, and the protruding head portion 186 (see FIG. 8C) causes the head core 184 to move. The magnetic information recorded by contacting the magnetic track 20 (see FIG. 8B) having substantially the same width as the head portion 186 is confirmed. on the other hand,
The step portion 188 has a height difference from the apex of the head portion 186 (see FIG. 8C), and the image frame 1 on the negative film 12 is formed.
It does not come into contact with 2A and passes over it (see FIGS. 8B and 8C).

Therefore, as shown in FIG. 8C viewed from the direction of arrow E in FIG. 8A, the recording head 142 and the reading head 140 have the head portion 186 and the negative film 1.
The second magnetic track 20 comes into contact with the stepped portion 188, and the stepped portion 188 does not come into contact with the portion of the negative film 12 on which the image frame 12A is recorded.

As a result, recording on the magnetic track 20 and reading of the recorded information can be performed by the head portion 186 of each of the recording head 142 and the reading head 140, and the step portion 188 is formed on the sliding surface 182. By providing, it is possible to avoid contact between the sliding surface 182 and the image frame 12A on the negative film 12. Therefore, it is possible to prevent the image frame 12A from being damaged by the contact.

FIG. 9 shows another embodiment of the head portion 186 of the reading head 140 used in this embodiment.

In this reading head 140, a notch 192 is further formed in the head portion 186 at the position where the negative film 12 is detached, which is downstream in the transport direction of the negative film 12 indicated by the arrow with respect to the head gap. Are formed. The cutout portion 192 is arranged in a direction perpendicular to the transport direction (arrow) of the negative film 12.

As a result, it is possible to remove dust and the like that are accumulated on the downstream side of the negative film 12 in the transport direction. Further, since the cutout portion 192 is formed in the direction perpendicular to the transport direction, it is possible to uniformly and efficiently remove dust in the width direction of the magnetic track contacting the head portion 186.

FIG. 10 shows a reading head 140 in which two notch portions 192 are provided on the upstream side and the downstream side in the transport direction of the negative film 12 with the head gap 185 interposed therebetween. This makes it possible to more efficiently remove dust that accompanies the transport of the negative film 12, and also to remove the dust even when the transport direction of the negative film 12 is reversed.

In this embodiment, the stepped notch 192 is formed.
Although the dust is removed by providing, the shape is such that the height difference can be provided on the arcuate surface of the head core 184,
The shape is not limited to the step shape, and may be, for example, an arc shape, a curved shape, or a linear notch.

In this embodiment, in order to improve the wear resistance of the head portion 186, a hard film of ceramic, titanium or the like can be formed on the surface of the head portion 186 on the head portion 186. Thereby, even if an abrasive is applied to the negative film 12 in order to reduce the deposits on the head surface, the surface of the head portion 186 is not damaged and the durability is not impaired.

Further, on the surface of the head portion 186, silicon,
It is possible to prevent dust and the like from accumulating on the surface of the head portion 186 by forming a film of a polymer agent having a low coefficient of friction such as Teflon.

Further, the bottom surface of the read head 140 opposite to the sliding surface 182 may be covered with a material having a high magnetic shield effect such as permalloy to reduce noise by a so-called back shield. .

In this embodiment, the width dimension of the head core 184 is set to be substantially the same as the width dimension of the magnetic track 20.
If the protruding head portion 186 on the sliding surface 182 does not come into contact with the image frame 12A, it may be larger than the width dimension of the magnetic track 20. This makes it possible to record or read information reliably.

In this embodiment, the step portion 188 is formed so as to be parallel to the conveying direction of the negative film 12, but the head gap 185 is used for reading or recording the information recorded on the magnetic track 20. If the head portion 186 having a necessary width and protruding to the image frame 12A does not come into contact with the image frame 12A, the same effect can be obtained without being limited to the parallel direction. For example, the head gap of the head portion 186 has a sufficient width with respect to the magnetic track 20,
The head gap 185 may be formed in an arc shape so that the sliding surface 182 does not come into contact with the image area where the image frame 12A of the negative film 12 is recorded.

Further, although two step portions 188 are provided on both sides in the width direction of the head portion 186 in the present embodiment, the present invention is not limited to this, and may be provided only on the side facing the image frame 12A.

Further, a step difference 188 is provided so that the sliding surface 182 has a height difference so that only the head portion 186 contacts the magnetic track 20, but a curved or linear notch portion is provided. Even in this case, the same effect can be obtained.

In this embodiment, the exposure of the image frame 12A recorded on the negative film 12 is performed on the outward path, but it may be performed on the return path. In that case, it is necessary to change the positions of the read head 140 and the recording head 142 in the magnetic head portions 132 and 134 of the negative carrier 10. That is, when the image is exposed on the return path, the conveyance on the return path is performed for each image frame 12A. Therefore, when the image frame 12A is arranged in the opening 48,
The recording head 142 is arranged so that the recording head 142 is located between the image frames 12A. As a result, the magnetic information recorded on the magnetic track 20 is read by the read head 140 whose position is not limited on the forward path, and is exposed based on the read information on the return path, and the negative film 12 is conveyed for each image frame 12A. Information can be recorded by the recording head 142.

[0099]

As described above, according to the present invention,
It is possible to provide a photographic film processing device capable of surely recording and reading magnetic information on a magnetic recording layer on a photographic film and obtaining a clear image without scratches.

Further, according to the present invention, it is possible to provide a photographic film processing apparatus capable of reducing the amount of deposits such as dust on the magnetic head portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a negative carrier applied to this embodiment.

FIG. 2 is a perspective view showing a printer processor to which a negative carrier is mounted.

FIG. 3 is a schematic plan view of a negative carrier.

FIG. 4 is a schematic cross-sectional view taken along a conveyance path of a negative carrier.

FIG. 5 is a schematic cross-sectional view of the cartridge loading unit of the negative carrier as seen along the carrying direction.

FIG. 6A is a schematic plan view of a negative film applied to the present embodiment, and FIG. 6B is a schematic side view of a cartridge containing the negative film.

FIG. 7 is a perspective view showing a reading head used in this embodiment (a resin cross-section line is added to clarify a resin portion).

8A is an enlarged schematic view of a magnetic head portion, FIG. 8B is an enlarged schematic view of a magnetic head portion as seen from a direction of an arrow D,
(C) is a diagram of an enlarged schematic view of the magnetic head portion as seen from the direction of arrow E.

FIG. 9 is a perspective view showing another reading head used in this embodiment (a resin cross-section line is added to clarify a resin portion).

FIG. 10 is a perspective view showing another reading head used in this embodiment (a resin cross-section line is added to clarify a resin portion).

FIG. 11 is a perspective view showing a conventionally used read head (a resin cross section line is added to clarify a resin portion).

[Explanation of symbols]

 10 negative carrier 12 negative film 14 cartridge 18 perforation 20 image frame 30 pedestal part 132, 134 magnetic head part 140 read head 142 recording head 182 sliding surface 184 head core 186 head part 188 step part 192 cutout part

Claims (6)

[Claims] 1. A conveying means for conveying a photographic film provided with a magnetic recording layer for recording information, and a means for magnetically recording on the magnetic recording layer or for reading information recorded on the magnetic recording layer. Along with the width of the head core surface of the photographic film carried by the carrying means, the head core surface is in sliding contact with the magnetic recording layer and the width dimension of the head core surface in the photographic film carrying direction is substantially the same as the width dimension of the magnetic recording layer. A photographic film processing apparatus comprising: a magnetic head having a first cutout portion that recesses at least one end in the direction. 2. A transporting means for transporting a photographic film provided with a magnetic recording layer for recording information, and a magnetic recording means for magnetically recording on the magnetic recording layer or for reading information recorded on the magnetic recording layer. In addition, a head core surface which is in sliding contact with the magnetic recording layer of the photographic film conveyed by the conveying means and a second notch portion for recessing a part of the head core surface in the direction perpendicular to the photographic film conveying direction are provided. A photographic film processing apparatus having a magnetic head. 3. A conveying means for conveying a photographic film provided with a magnetic recording layer for recording information, and a means for magnetically recording on the magnetic recording layer or for reading information recorded on the magnetic recording layer. Together with the width of the head core surface of the photographic film conveyed by the conveying means, the head core surface in sliding contact with the magnetic recording layer and the width dimension of the head core surface in the photographic film conveying direction are substantially the same as the width dimension of the magnetic recording layer. A magnetic head having a first cutout portion for recessing at least one end in the direction and a second cutout portion for recessing a part of the head core surface in a direction perpendicular to the photographic film transport direction; apparatus. 4. The gap between the head core of the magnetic head and the casing is filled with a resin, and the gap between the head core and the casing is 0.2 mm or less. The photographic film processing apparatus according to any one of items. 5. The photographic film processing apparatus according to claim 1, wherein in the magnetic head, a magnetic recording head gap is larger than a magnetic reading head gap. 6. The head core surface of the magnetic head is covered with a hard coating.
The photographic film processing apparatus as described in any one of 1 above.