JP2010067297A - Surface treatment method and surface treatment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface treatment method and surface treatment device for taking out a plurality of disks from a cassette, immersing them into a coating solution in a coating tank, and pulling up them from the coating solution to return them to the cassette, wherein proper coating is achieved so as to prevent contact between disks when the coating solution is coated by immersion. <P>SOLUTION: A holding bar 321 is prepared that horizontally extends and is located directly above a support bar 311 and has recesses formed downward at intervals equal to the intervals of magnetic disk media 20. During the period between when the magnetic disk medium 20 is conveyed to directly above the tank 40 and when dipped into a coating solution in a tank 40, the holding bar 321 is kept close to the support bar in a holding state where an upper end of each magnetic disk media 20 enters each recess part 321a. During the period between when the magnetic disk medium 20 is immersed into the coating solution and when pulled out of the coating solution, the holding bar 321 is kept away from the support bar 311 in a retreat state where no interference occurs with the magnetic disk medium 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention relates to a surface treatment method and a surface treatment apparatus that take out a plurality of discs from a cassette, immerse them in a coating solution in a coating tank, and then pull them up from the coating solution and return them to the cassette.

  For example, in manufacturing a magnetic disk medium, a magnetic disk medium in the manufacturing process is immersed in a bath filled with a liquid to form a protective film on the surface of the magnetic disk medium. A surface treatment step of forming a film by dipping on the surface may be performed.

  Here, the surface treatment of the magnetic disk medium will be described as an example.

  FIG. 1 is a perspective view showing a cassette for storing a magnetic disk medium and a magnetic disk medium stored in the cassette.

  The cassette 10 has upper surfaces that are open at both end surfaces, and ribs 111 are formed on the inner walls of the side walls 11 at regular intervals. The magnetic disk medium 20 has a disk shape and is provided with a hole 21 in the center. In the cassette 10, a plurality of magnetic disk media 20 are guided by the ribs 111, and are arranged so that the holes 21 of the magnetic disk media 20 communicate with each other. It is stored in.

  2-10 is a figure which shows the conventional surface treatment apparatus and its operation | movement.

  The surface treatment apparatus 30A is provided with a support mechanism called a hanger 31 for supporting the magnetic disk medium 20 (see FIG. 1). The hanger 31 is provided with a support bar 311 extending horizontally, and the magnetic disk medium 20 is directly supported by the support bar 311. In the example shown here, the hanger 31 is provided with four four support bars 311.

  FIG. 11 is a diagram showing the shape of the support bar and the magnetic disk medium 20 supported by the support bar.

  The support bar 311 provided on the hanger 31 extends sideways as shown in FIG. 11, and has upward concave portions 311a formed at the same interval as the arrangement interval of the magnetic disk media 20 in the cassette 10 shown in FIG. The upper edge of the central hole 21 (see FIG. 1) of each magnetic disk medium 20 is engaged with each recess 311a.

  2 to 10, the operation of the surface treatment apparatus 30A will be described.

  As shown in FIG. 3, when the four cassettes 10 containing the magnetic disk medium 20 approach the surface treatment device 30A, the hanger 31 descends in the direction of arrow A, and the cassette 10 moves to the arrow B shown in FIG. Further, the support bar 311 enters the central hole 21 (see FIG. 1) of the plurality of magnetic disk media 20 housed in the cassette 10, and the hanger 31 is as shown by an arrow C in FIG. As a result, the magnetic disk medium 20 is lifted to the state shown in FIG. In FIG. 5 and the subsequent drawings, a plurality of magnetic disk media 20 arranged as shown in FIG. 11 may be schematically indicated by one cylindrical shape.

  The magnetic disk medium 20 lifted by the hanger 31 as shown in FIG. 5 is conveyed to the position immediately above the four tanks 40 in the direction of arrow D shown in FIG. The four tanks 40 contain a coating solution that is applied to the surface of the magnetic disk medium 20 to form a protective film.

  Next, the hanger 31 descends as shown by arrow E in FIG. 7 and the magnetic disk medium 20 is immersed in the coating solution in the tank 40, and then the hanger 31 rises as shown by arrow F in FIG. The magnetic disk medium 20 is pulled up from the coating solution, conveyed as shown by an arrow G in FIG. 9, and lowered as shown by an arrow H in FIG. 10 to store the magnetic disk medium 20 in the cassette 10 again.

  FIG. 12 is a schematic diagram showing a state in which the magnetic disk medium is immersed in the coating liquid.

  Since the magnetic disk medium 20 is supported only in the recessed portion 311a in a state of entering the recessed portion 311a of the support bar 311, the magnetic disk medium 20 swings in the direction of the arrow XX when adjacent to the coating liquid 41 in the tank 40 and is adjacent thereto. The upper and lower ends of the magnetic disk media 20 may come into contact with each other, and the coating liquid may not be normally applied to the upper and lower ends of the magnetic disk media 20 and the magnetic disk media may become defective in manufacture.

  In order to prevent the magnetic disk media 20 from contacting each other, it is conceivable to support the magnetic disk media 20 not only at the center thereof but also at the upper and lower ends (see Patent Documents 1 and 2). Alternatively, the support member supporting the lower end may be a factor that hinders normal application.

In addition, it is conceivable to increase the arrangement interval between the magnetic disk media, but in this case, the number of sheets that can be processed at one time is reduced, leading to a reduction in manufacturing efficiency.
JP-A-8-41649 JP 2000-123361 A

  The subject of the surface treatment method and surface treatment apparatus of this indication is in performing normal application | coating while avoiding the contact between the arranged discs, when apply | coating a coating liquid by immersion.

In the surface treatment method of the present disclosure, a plurality of discs each having a hole in the center are stored at a predetermined arrangement interval from a cassette that stores the discs in a standing state so that the holes of each disc communicate with each other. It is a surface treatment method in which a disk is taken out, immersed in a coating solution in a coating tank containing a coating solution, and then pulled back from the coating solution and returned to the cassette,
A central hole of a plurality of discs housed in the cassette by moving a support rod extending horizontally and having a plurality of first recesses formed at least upward at the same interval as the arrangement interval relative to the cassette Removing the plurality of discs from the cassette by inserting the discs into the respective first recesses and lifting them up,
A first transport step for transporting a plurality of disks taken out of the cassette by the take-out step to just above the coating tank;
The plurality of discs transported immediately above the coating tank by the first transport step are positioned so as to extend laterally and directly above the support rods, and have a plurality of second recesses at least downwardly at the same interval as the arrangement interval. A dipping step of immersing the formed holding rod in the coating solution in the coating tank while maintaining the state where the upper end edge of each disk is close to the supporting rod until the holding state enters the second recess,
While maintaining the state in which the plurality of discs immersed in the coating solution by the dipping step are kept away from the support rods until the holding rods are retracted so as not to interfere with the plurality of discs, from the coating solution A pulling step to raise,
A second transport step for transporting a plurality of discs in a state of being pulled up from the coating liquid by the pulling step to just above the cassette;
A storage step of storing the plurality of discs transported to the position immediately above the cassette by the second transport step in the cassette.

Further, the surface treatment apparatus according to the present disclosure includes a plurality of discs each having a plurality of discs, each having a hole in the center, stored in a standing state so that the holes of each disc communicate with each other at a predetermined arrangement interval. It is a surface treatment device that takes out a disk of a sheet, immerses it in a coating solution in a coating tank containing a coating solution, and further pulls it up from the coating solution and returns it to the cassette,
A plurality of discs stored in the cassette by having a support bar extending horizontally and having a plurality of recesses formed at least upwardly at the same interval as the array interval; and moving the support rod relative to the cassette; The discs are inserted into the center hole, and the discs are locked in the first recesses and lifted to remove the discs from the cassette, and the discs are transported to just above the coating tank. A disk support mechanism for immersing the coating liquid in the coating tank, further lifting the plurality of disks from the coating liquid to the position directly above the cassette and storing it in the cassette;
A holding bar that extends laterally and is located immediately above the support bar and has a second recess formed at least downwardly at the same interval as the arrangement interval, and the holding bar includes at least the plurality of discs Until it is immersed in the coating liquid in the coating tank after being transported immediately above the coating tank, the upper edge of each of the plurality of discs is held in the holding state so as to enter each second recess. Maintain the holding state close to each other, and at least until the plurality of discs immersed in the coating solution are pulled up from the coating solution, put the holding rod in a retracted state that does not interfere with the plurality of discs. And a dipping assist mechanism that keeps it away from the support rod.

  Shaking (see FIG. 12) occurs when a plurality of discs are supported only by the support rods and immersed in the coating solution when the plurality of discs are being immersed in the coating solution. Thus, after the disk is immersed in the coating liquid and when the immersed disk is pulled up from the coating liquid, the shaking that comes into contact with the adjacent disk hardly occurs.

  The surface treatment method and the surface treatment apparatus disclosed in the present disclosure pay attention to this point, and prepare the holding rod as described above and hold the plurality of discs while they are being lowered to immerse them in the coating liquid. The rods are prevented from shaking by the rods, and after being immersed, the holding rods are separated from the discs and lifted in the separated state, preventing contact between the discs without increasing the spacing between the discs. Then, normal application is performed.

  According to the surface treatment method and the surface treatment apparatus of the present disclosure, when applying the coating liquid by dipping, contact between the arranged disks is avoided and normal application is performed.

  Hereinafter, an embodiment of the present case will be described.

  13 to 21 are views showing the surface treatment apparatus and the operation thereof according to an embodiment of the present case.

  FIGS. 13 to 21 correspond to FIGS. 2 to 10 described above, respectively, and here, differences from FIGS. 2 to 10 will be mainly described.

  The surface treatment apparatus 30B shown in FIGS. 13 to 21 is that the surface treatment apparatus 30A shown in FIGS. 2 to 10 further includes a dipping assist mechanism 32 including a holding rod 321. Here, in this embodiment, four support bars 311 are provided, and four holding bars 321 are also provided.

  The holding bar 321 extends laterally and is located immediately above the corresponding support bar 311, and has a concave portion formed downward at the same interval as the arrangement interval of the magnetic disk media 20 in the cassette 10 shown in FIG. 1. .

  FIG. 22 is a diagram showing the magnetic disk medium supported by both the support bar and the holding bar.

  The method of supporting the magnetic disk medium 20 by the support rod 311 constituting the hanger 31 is the same as that in the conventional case shown in FIG. Here, holding rods 321 constituting the immersion assisting mechanism 32 are arranged directly above the support rod 311, and the upper end of each magnetic disk medium 20 is formed on the holding rod 321, and the recess 311 a of the support rod 311 is formed. The concave portions 321a are arranged in the downward direction arranged at the same pitch as the arrangement pitch.

  FIG. 23 is an enlarged view of a part of FIG.

  The holding bar 321 engages with the recess 311 a of the support bar 311 and the upper end of the magnetic disk medium 20 supported by the support bar 311 enters the recess 321 a of the holding bar 321, and a disturbance acts on the magnetic disk medium 20. In the non-contact state, the support bar 311 is approached to the holding state where it is not in contact with the magnetic disk medium 20. In dipping in a coating liquid described later, the upper end of the magnetic disk medium 20 enters the recess 321a of the holding rod 321 and descends while maintaining a non-contact holding state, so that the magnetic disk medium 20 is immersed in the coating liquid. .

  Returning to FIGS. 13 to 22, the operation of the surface treatment apparatus 30B will be described.

  As shown in FIG. 14, when the four cassettes 10 containing a plurality of magnetic disk media 20 approach the surface treatment device 30B, the four hangers 31 descend in the direction of arrow A, as shown in FIG. When the cassette 10 further advances in the direction of arrow B, the support bar 311 of the hanger 31 enters the central hole 21 (see FIG. 1) of the plurality of magnetic disk media 20 accommodated in the cassette 10, and the hanger 31 is further illustrated in FIG. As shown by arrow C shown in FIG. 16, the magnetic disk medium 20 is lifted to the state shown in FIG.

  While the magnetic disk medium 20 shown in FIGS. 14 to 16 is taken out from the cassette 10, the holding bar 321 is located immediately above the support bar 311 and is sufficiently away from the support bar 311. It is in the retracted state that does not interfere with.

  The magnetic disk medium 20 lifted by the hanger 31 as shown in FIG. 16 is conveyed to the position immediately above the four tanks 40 in the direction of arrow D shown in FIG. At this time, the holding bar 321 also moves in the direction of the arrow D together with the support bar 311, but the holding bar 321 is kept in the retracted state. The four tanks 40 contain a coating solution that is applied to the surface of the magnetic disk medium 20 to form a protective film.

  Next, as shown by the arrow E in FIG. 18, the hanger 31 is lowered and the magnetic disk medium 20 is immersed in the coating solution in the tank 40. At this time, the support rod 311 is stopped and the holding rod is stopped. Only 321 is first lowered to be in a holding state (the state shown in FIGS. 22 and 23), and thereafter, with the holding state being maintained, the support bar 311 and the holding bar 321 are simultaneously lowered, and the magnetic disk medium 20 is stored in the tank 40. It is immersed in the coating liquid inside. At this time, the magnetic disk medium 20 may be subjected to a disturbance that causes the magnetic disk medium 20 to swing in the direction of the arrow XX shown in FIG. Is in the recess 321a of the holding bar 321, so that contact between adjacent magnetic disk media 20 is avoided.

  When the magnetic disk medium 20 is immersed in the coating liquid up to its upper end and the action of disturbance is subsided, the upper end of the magnetic disk medium 20 is not in contact with the recess 321a of the holding rod 321 and the coating liquid reaches the upper end. Normal application.

  Thereafter, the magnetic disk medium 20 is pulled up from the coating solution as indicated by an arrow F in FIG. 19. At this time, first, only the holding bar 321 is pulled up early with the support bar 311 remaining, and is in a retracted state. Thereafter, the support bar 311 is pulled up. In this way, the holding bar 321 acts only when the magnetic disk medium 20 is immersed in the coating liquid, and when the magnetic disk medium 20 is pulled up, the holding bar 321 is retracted to avoid contact between the magnetic disk media 20. Normal coating is performed up to the upper end of the magnetic disk medium 20.

  Thereafter, the sheet is transported as indicated by an arrow G in FIG. 20 and lowered as indicated by an arrow H in FIG. 21, and the magnetic disk medium 20 is again stored in the cassette 10.

  Here, the holding bar 321 works effectively only when the magnetic disk medium 20 is immersed in the coating solution. However, the holding bar 321 may shift to the holding state before the conveyance shown in FIG. 17, for example.

  The holding bar 321 is controlled so that the upper end of the magnetic disk medium enters the recess 321a and does not come into contact with the magnetic disk medium 20 when no disturbance is applied. Even if control is performed so that the upper end of the medium 20 enters the concave portion 321a of the holding rod 321 and comes into contact with the concave portion 321, for example, the holding rod is pulled up immediately before or after the magnetic disk medium 20 is immersed in the coating solution to the upper end. Control may be performed so as not to hinder the application of the coating liquid.

  In this embodiment, the support bar 311 is formed with an upward recess 311a and the holding bar 321 is formed with a downward recess 321a. However, the support bar 311 is only upward and the holding bar 321 is downward. However, the magnetic disk medium 20 is supported by or inserted into the circular groove formed in a small diameter at a predetermined pitch and having a circular groove. The structure to be able to be used may be sufficient.

It is a perspective view which shows the cassette which accommodates a magnetic disc medium, and the magnetic disc medium accommodated in the cassette. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. It is a figure which shows the conventional surface treatment apparatus and its operation | movement. FIG. 2 is a diagram showing a shape of a support bar and a magnetic disk medium supported by the support bar. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is a figure which shows the surface treatment apparatus of one Embodiment of this case, and its operation | movement. It is the figure which showed the magnetic disk medium of the state supported by both the support bar and the holding bar. FIG. 23 is an enlarged view of a part of FIG. 22.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cassette 11 Both-side wall 20 Magnetic disk medium 21 Hole 30A, 30B Surface treatment apparatus 31 Hanger 40 Tank 41 Coating liquid 111 Rib 311 Support bar 311a, 321a Concave part 321 Holding bar

Claims (6)

A plurality of discs, each having a hole in the center, are taken out from a cassette that is stored in a state where the holes of each disc communicate with each other at a predetermined arrangement interval. A surface treatment method of immersing in the coating solution in the coating tank containing the liquid and further pulling up from the coating solution and returning it to the cassette,
The center of a plurality of discs stored in the cassette is moved laterally and a support bar having a plurality of first recesses formed at least upwardly at the same interval as the arrangement interval is moved relative to the cassette. Taking out the plurality of discs from the cassette by inserting each disc into the first recess and lifting it by engaging each first recess; and
A first transport step for transporting the plurality of disks taken out from the cassette by the take-out step to just above the coating tank;
The plurality of discs transported immediately above the coating tank by the first transport step extend laterally and are positioned directly above the support rods, and at least a plurality of second discs at the same interval as the array interval. 2 dipping the holding rod formed with the recesses in the coating solution in the coating tank while maintaining the state where the upper end edge of each disk is close to the support rod until the holding state where the upper end edge of each disk enters each second recess. Dipping step,
Maintaining the plurality of discs immersed in the coating solution in the immersion step, with the holding rods kept away from the support rods to a retracted state that does not interfere with the plurality of discs. While pulling up from the coating solution;
A second transporting step of transporting the plurality of discs in a state pulled up from the coating liquid by the pulling step to just above the cassette;
And a storing step of storing the plurality of discs transported to just above the cassette by the second transporting step in the cassette.   In the dipping step, the holding rod is held in a state in which the upper edge of each of the plurality of disks enters the second recess and is not in contact with the disk in a state where there is no disturbance to the disk. The surface treatment method according to claim 1, wherein the surface treatment method is a step of immersing the plurality of discs in a coating solution in the coating tank while maintaining a state in which the support rod is brought close to the state.   The disk is a magnetic disk medium on which information is magnetically recorded, and the coating liquid is a coating liquid for coating a protective film on the surface of the magnetic disk medium. 2. The surface treatment method according to 2. A plurality of discs, each having a hole in the center, are taken out from a cassette that is stored in a state where the holes of each disc communicate with each other at a predetermined arrangement interval. A surface treatment apparatus that is immersed in the coating solution in a coating tank containing the liquid and further pulled up from the coating solution and returned to the cassette,
A plurality of circles that are horizontally extended and have a support bar having a plurality of recesses formed at the same interval as the array interval and that are moved upward relative to the cassette. The plurality of discs are taken out from the cassette by inserting the discs into the central holes of the plates and lifting the respective discs in the first recesses, and the discs are placed directly above the coating tank. A disk support mechanism for transporting to a coating liquid in the coating tank and further lifting the plurality of disks from the coating liquid to a position directly above the cassette and storing in the cassette;
A holding bar that extends laterally and is located immediately above the support bar and has a second recess formed at least downwardly at the same interval as the arrangement interval, and the holding bar includes at least the plurality of disks. The support until the upper edge of each of the plurality of discs enters the second concave portion until it is immersed in the coating liquid in the coating tank after being transported immediately above the coating tank. Maintaining the holding state close to the rod, and at least until the plurality of discs immersed in the coating solution are pulled up from the coating solution, the holding rod and the plurality of discs A surface treatment apparatus comprising: a dipping assist mechanism that keeps the support rod away from the support rod to a retracted state that is non-interfering.   The dipping assist mechanism is configured so that each of the plurality of sheets is held until the holding rod is dipped in the coating liquid in the coating tank after at least the plurality of disks are transported immediately above the coating tank. Maintaining the holding state close to the support rod to a holding state in which the upper edge of the disk enters each second recess and is not in contact with the disk in a state where there is no disturbance to the disk The surface treatment apparatus according to claim 4, wherein the apparatus is a surface treatment apparatus.   The disk is a magnetic disk medium on which information is magnetically recorded, and the surface treatment apparatus uses the coating liquid for applying a protective film on the surface of the magnetic disk medium as the coating liquid. 6. The surface treatment apparatus according to claim 4, wherein the apparatus is a device for applying a protective film to the surface of the medium.

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