Abstract:
A magnetic recording medium is manufactured without the disappearance of the surface of a substrate that comprises a magnetic recording layer by ion milling and without being influenced by the atmosphere. A magnetic recording medium manufacturing device manufactures a magnetic recording medium by implanting an ion beam into a substrate that comprises a magnetic recording layer and removing by ashing the surface of the substrate that comprises the magnetic recording layer after the ion beam is implanted. The magnetic recording medium manufacturing device comprising an ion implantation chamber for implanting the ion beam into the substrate that comprises the magnetic recording layer coated with a resist film or a metal mask, and an ashing chamber for removing, by ashing, with plasma, the resist film or the metal mask of the substrate that comprises the magnetic recording layer coated with the resist film or the metal mask. The ion implantation chamber and the ashing chamber are coupled in a vacuum state. The magnetic recording medium manufactured device is provided with a substrate carrier for carrying the substrate into which the ion beam is implanted from the ion implantation chamber to the ashing chamber.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a magnetic recording medium manufacturing device for manufacturing a high density magnetic recording medium. 
       BACKGROUND 
       [0002]    In a conventional method for manufacturing a magnetic recording medium, a magnetic layer is etched in accordance with a resist pattern formed on the magnetic layer by using plasma or an ion beam at first, and then a groove in the etched magnetic layer is filled with a non-magnetic material. Next, after flattening a surface of the magnetic layer through a flattening process, such as ion beam etching and polishing, a protective film is formed on the surface (For example, refer to Patent Document 1). 
         [0003]    Using the method of manufacturing a magnetic recording medium, disclosed in Patent Document 1, requires steps of filling with a non-magnetic material and flattening the surface of the magnetic layer after etching an area other than an information recording area for removal, so that the manufacturing process becomes complicated. Accordingly, this also results in another unfavorable effect that the production cost increases. 
         [0004]    As a method for solving the unfavorable issues described above, proposed is a method, in which ions are locally implanted into a magnetic film to change a magnetization state there, and afterwards an entire surface of the magnetic film is annealed (For example, refer to Patent Document 2). 
       PRIOR ART DOCUMENTS 
     Patent Documents 
       [0000]    
       
         
           
             Patent Document 1: JP2003-16621A (FIG. 3) 
             Patent Document 2: JP2005-228817A (FIG. 1) 
           
         
       
     
       SUMMARY OF INVENTION 
     Problems to be Solved 
       [0007]    However, in the method of manufacturing a magnetic recording medium disclosed in Patent Document 2, it is required to implant high-density ions within a density range from 1×10 16  ions/cm 2  to 1×10 19  ions/cm 2  for changing a composition ratio of atomic elements in a magnetic film. Accordingly, there exists a risk that a resist film and a protective film may disappear, and a further risk that a magnetic film may also disappear owing to ion beam milling. Meanwhile, since a substrate is externally transferred when being moved among manufacturing processes, the substrate exposes itself to the atmosphere so that unfortunately deterioration in quality happens. 
         [0008]    Thus, it is an object of the present invention to provide a magnetic recording medium manufacturing device that can manufacture a magnetic recording medium with neither any disappearance of a resist film, a protective film, and a magnetic film owing to ion beam milling, nor any effect of the atmosphere. 
       Means to Solve the Problems 
       [0009]    To achieve the object described above, the present invention provides the following aspect; i.e., a magnetic recording medium manufacturing device for manufacturing a magnetic recording medium through steps of dosing an ion beam into a substrate having a magnetic recording layer, and ashing and removing at least one of a resist film and a metal mask on a surface of the substrate having the magnetic recording layer after the ion beam dosing; the magnetic recording medium manufacturing device including: an ion implantation chamber, to which a required kind of ions are supplied from a source of ion supply for generating ions; the ions being accelerated to have an energy as required, and the ion beam then being dosed into a substrate having a magnetic recording layer created by applying one of a resist film and a metal mask; and an ashing chamber equipped with a plasma generator for generating and diffusing plasma; in the ashing chamber, at least one of the resist film and the metal mask being ashed and removed by using the plasma diffused with the plasma generator, from the substrate having the magnetic recording layer created by applying one of the resist film and the metal mask; wherein, the ion implantation chamber and the ashing chamber are connected with a vacuum valve under vacuum condition, and the magnetic recording medium manufacturing device is equipped with a substrate carrier for carrying the substrate from the ion implantation chamber to the ashing chamber after the ion beam dosing. 
         [0010]    According to the structure described above, the ion implantation chamber and the ashing chamber are connected with the vacuum valve under the vacuum condition. Therefore, the substrate having the magnetic recording layer can be processed continuously without exposing itself to the atmosphere at an inter-process point between the ion implantation and the ashing. Accordingly, this arrangement makes it possible to avoid a quality deterioration of the magnetic recording medium owing to a bad effect of the atmosphere. 
         [0011]    In addition to the above aspect, it is preferable that the magnetic recording medium manufacturing device further includes a CVD (Chemical Vapor Deposition) chamber for forming a thin film on a surface of the substrate, having the magnetic recording layer after the ashing, by means of generating plasma through applying a high-frequency power to one of a parallel plate electrode and an inductive coupling antenna; wherein the ashing chamber and the CVD chamber are connected with a vacuum valve under vacuum condition, and the substrate carrier carries the substrate having the magnetic recording layer after the ashing from the ashing chamber to the CVD chamber. 
         [0012]    According to the structure described above, the magnetic recording medium manufacturing device makes it possible to form a protective film on a surface of the substrate. Therefore, it becomes possible to avoid damage of the magnetic recording medium due to a defect, and also to surely avoid a quality deterioration of the magnetic recording medium owing to a bad effect of the atmosphere. 
         [0013]    In addition to the above aspect, it is preferable that furthermore the substrate carrier includes; a substrate holder for holding the substrate; and a driving mechanism for driving the substrate holder. 
         [0014]    According to the structure described above, the substrate having the magnetic recording layer can smoothly be transferred to a next process chamber. 
       Advantageous Effect of the Invention 
       [0015]    According to the present invention, a magnetic recording medium can be manufactured with neither any disappearance of a surface of a substrate, including a magnetic recording layer, owing to ion milling, nor any effect of the atmosphere. Furthermore, a manufacturing process according to the present invention is simplified in comparison with the manufacturing method described in Patent Document 1 so as to enable cost reduction. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]      FIG. 1  is a side view drawing for explaining a structural overview of a magnetic recording medium manufacturing device according to an embodiment of the present invention. 
           [0017]      FIG. 2  is a cross sectional view of the magnetic recording medium manufacturing device taken along the line A-A of  FIG. 1 . 
           [0018]      FIGS. 3A and 3B  show a structure of a substrate carrier of  FIG. 1 ; namely  FIG. 3A  is a side view drawing of the substrate carrier, and  FIG. 3B  is a cross sectional view of the substrate carrier taken along the line B-B of  FIG. 3A . 
           [0019]      FIG. 4  is a cross sectional view of an ion implantation chamber taken along the line C-C of  FIG. 1 . 
           [0020]      FIG. 5  is a cross sectional view of an ashing chamber taken along the line D-D of  FIG. 1 . 
           [0021]      FIG. 6  is a cross sectional view of a CVD chamber taken along the line E-E of  FIG. 1 . 
           [0022]      FIGS. 7A to 7D  are drawings for explaining processes of manufacturing a magnetic recording medium by using the magnetic recording medium manufacturing device according to an embodiment of the present invention; namely,  FIG. 7A  is a cross sectional view for explaining an ion implantation,  FIG. 7B  is a cross sectional view of a substrate having a resist film after the ion implantation,  FIG. 7C  is a cross sectional view of a substrate having a magnetic recording layer after an ashing operation, and  FIG. 7D  is a cross sectional view of a magnetic recording medium. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0023]    A magnetic recording medium manufacturing device  10  according to an embodiment of the present invention is described below with reference to the accompanied drawings. In the following explanation, each direction shown in  FIGS. 1 to 6  represents its corresponding direction as described below: Directions of arrows X 1  and X 2  represent the front and the rear, respectively. Directions of arrows Y 1  and Y 2 , which are perpendicular to the directions of the arrows X 1  and X 2  in a horizontal direction, represent the left and the right, respectively. Directions of arrows Z 1  and Z 2 , which are perpendicular to the X-Y plane, represent the top and the bottom, respectively. 
         [0024]      FIG. 1  is a side view drawing for explaining a structural overview of the magnetic recording medium manufacturing device  10  according to the embodiment of the present invention.  FIG. 2  is a cross sectional view of the magnetic recording medium manufacturing device  10  taken along the line A-A of  FIG. 1 . 
         [0025]    As shown in  FIG. 1  and  FIG. 2 , the magnetic recording medium manufacturing device  10  is an endless in-line type apparatus, in which connected in series are an ion implantation chamber  20 , an ashing chamber  30 , and a CVD chamber  40  (when the ion implantation chamber  20 , the ashing chamber  30 , and the CVD chamber  40  are referred to collectively, these chambers are simply called the “process chambers  20 ,  30 , and  40 ”) and a substrate transfer passage  50  interconnects these chambers externally. The magnetic recording medium manufacturing device  10  is equipped with a substrate carrier  60  for carrying a substrate including a magnetic recording layer (hereinafter, a substrate before and after a processing operation in the process chambers  20 ,  30 , and  40  is collectively called a substrate  52 ). In the meantime, the substrate  52  taken in at a start point  54  is processed through the process chambers  20 ,  30 , and  40  for each processing operation, and then the substrate  52  is transported back to the start point  54 . 
         [0026]    A load lock chamber  56  is each placed at the rear of the ion implantation chamber  20  and in front of the CVD chamber  40 . Each load lock chamber  56  is used for a preparatory vacuuming operation in order to avoid the air from entering the process chambers  20 ,  30 , and  40 , before the substrate carrier  60  with the substrate  52  is introduced from the substrate transfer passage  50 , having the atmospheric environment, into the process chambers  20 ,  30 , and  40  under vacuum condition. The ion implantation chamber  20 , the ashing chamber  30 , the CVD chamber  40 , a front vertical passage  50   a  to be described later, a bottom horizontal passage  50   d  to be described later, and each load lock chamber  56  are connected one another by means of a connecting part  58  so as to be airtight. Though being not shown in  FIG. 1 , each connecting part  58  for connecting the process chambers  20 ,  30 , and  40  and the load lock chamber  56  is equipped with a shutter valve working as a vacuum valve. 
         [0027]    The substrate transfer passage  50  includes the front vertical passage  50   a , a rear vertical passage  50   b , a top horizontal passage  50   c , and the bottom horizontal passage  50   d . These passages are circularly connected so as to interconnect one load lock chamber  56  with the other load lock chamber  56  for making up an endless circuit (Refer to  FIG. 1 ). All of the front vertical passage  50   a , the rear vertical passage  50   b , the top horizontal passage  50   c , and the bottom horizontal passage  50   d  are tubular and box-shaped in their cross section. The front vertical passage  50   a  is placed at a further front position from the load lock chamber  56  installed in front of the CVD chamber  40 . A lower part of the front vertical passage  50   a  is connected to the load lock chamber  56  through the connecting part  58 . Facing the front vertical passage  50   a , the rear vertical passage  50   b  is placed in front of the ion implantation chamber  20 . The start point  54  is placed, for example, at a lower position of the rear vertical passage  50   b . The top horizontal passage  50   c  connects upper parts of the front vertical passage  50   a  and the rear vertical passage  50   b  in a horizontal direction. The bottom horizontal passage  50   d  connects the load lock chamber  56  installed at the rear of the ion implantation chamber  20  to a lower part of the rear vertical passage  50   b  in a horizontal direction. In the meantime, being provided in plurality, substrate carriers  60  are placed, for example, inside the process chambers  20 ,  30 , and  40  as well as the substrate transfer passage  50  at predetermined intervals. 
         [0028]    Described below next is a structure of a substrate carrier  60 . 
         [0029]      FIGS. 3A and 3B  show the structure of the substrate carrier  60 ; namely  FIG. 3A  is a side view drawing of the substrate carrier  60 , and  FIG. 3B  is a cross sectional view of the substrate carrier  60  taken along the line B-B of  FIG. 3A . 
         [0030]    As  FIGS. 3A and 3B  show, the substrate carrier  60  includes a substrate holder  62  for holding the substrate  52 , and driving rollers  64  of a driving mechanism for driving the substrate holder  62 . The substrate holder  62  includes a protrusion  65 , which protrudes in a horizontal direction at an upper part of the substrate holder  62  (Refer to  FIG. 3B ), and a flat plate section  66  that is almost flat. Then, the substrate holder  62  has its cross-section being almost T-shaped. Placed almost at the center of the flat plate section  66  are 3 circular bores  67  penetrating horizontally through the flat plate section  66 . The circular bores  67  are each placed at positions corresponding to 3 corners of an equilateral triangle. Then, each of the circular bores  67  in the flat plate section  66  is equipped with substrate clamps  68  at its outer edge part for holding a substrate  52 . The substrate clamps  68  for each of the circular bores  67  are each laid out at diagonal positions of 4 corners of a square internally touching an inside wall of the circular bore  67 . The substrate  52  having a disc-like shape is placed inside the circular bore  67 . Then, the substrate clamps  68  clamp an outer circumferential area of the substrate  52  to retain the substrate  52  in the substrate holder  62 . When the substrate  52  is retained in the substrate holder  62 , both surfaces of the substrate  52  are arranged so as to be almost in parallel with a Z-X plane of the substrate holder  62 . 
         [0031]    The driving rollers  64 , for example 4 sets in number, are laid out at a bottom of the substrate holder  62  in a back-and-forth direction. When the driving rollers  64  rotate, the substrate holder  62  moves backward and forward. Through controlling rotation movement of the driving rollers  64  by a control device, not shown in the drawing, movement of the substrate carrier  60  is controlled. 
         [0032]    Explained next with reference to  FIG. 4  is a structure of the ion implantation chamber  20 .  FIG. 4  is a cross sectional view of the ion implantation chamber taken along the line C-C of  FIG. 1 . 
         [0033]    As shown in  FIG. 4 , the ion implantation chamber  20  principally includes a mass flow controller (MFC)  21  for blowing off process gas while controlling the gas blowing operation, an ion generator  23  that generates and diffuses ions while controlling the amount of ions to be generated, an accelerating electrode  24  for regulating the diffusion and energy of the ions, a substrate storage section  25  for storing the substrate carrier  60 , a substrate holding section  26  for holding the substrate carrier  60 , and a vacuum pump  27  for discharging a residual gas out of the ion implantation chamber  20  externally. 
         [0034]    Each of both left and right sides of the substrate storage section  25  is provided with one MFC  21 , one ion generator  23 , and one accelerating electrode  24 . The MFC  21  regulates the amount of process gas that is supplied from a process gas supply source, not shown in the drawing, into the ion generator  23 . The MFC  21  and the ion generator  23  are so connected with a tube  28  that the process gas is fed from the MFC  21  through the tube  28  to the ion generator  23 . The ion generator  23  generates the ions according to the supplied process gas, and regulates the amount of ions and its spatial distribution. Then, the accelerating electrode  24  blows off and accelerates the ions, for example with a voltage within the range of 20 KV to 30 KV. Thus, the accelerated ions are dosed from the ion generator  23  and the accelerating electrode  24  into the substrate  52  as an ion beam. 
         [0035]    The substrate holding section  26  is placed in an upper area of the substrate storage section  25 , being almost at a center position in an Y 1 -Y 2  direction of the substrate storage section  25 . Provided at a bottom section of the substrate holding section  26  is an engaging groove  26   a  prepared by cutting out a part upward in a back-and-forth direction. While a protrusion part  65  of the substrate holder  62  being in engagement with the engaging groove  26   a  under contact-free condition, the substrate holder  62  is held almost at a center position of the ion implantation chamber  20 . Then, an ion beam is radiated toward the substrate  52  held by the substrate holder  62  to accomplish ion implantation. A residual gas remaining inside the substrate storage section  25  after the ion implantation is discharged externally by the vacuum pump  27 . 
         [0036]    Explained next with reference to  FIG. 5  is a structure of the ashing chamber  30 .  FIG. 5  is a cross sectional view of the ashing chamber  30  taken along the line D-D of  FIG. 1 . 
         [0037]    As shown in  FIG. 5 , the ashing chamber  30  principally includes an MFC  21 , a plasma generator  32  that generates and diffuses plasma, a substrate storage section  34  for storing the substrate carrier  60  sent out of the ion implantation chamber  20 , a substrate holding section  26 , a vacuum pump  27 , and a conductance-variable valve  35 . 
         [0038]    Each of both left and right sides of the substrate storage section  34  is provided with one MFC  21 , and one plasma generator  32 . An appropriate amount of process gas regulated by the MFC  21  is supplied from a process gas supply source, not shown in the drawing, to the plasma generator  32 . As the process gas for an ashing operation, a commonly used oxygen-based or fluorine-based single-component gas or a mixed gas including those components can be used. The MFC  21  and the plasma generator  32  are so connected with a tube  36  that the process gas is fed from the MFC  21  through the tube  36  to the plasma generator  32 . In the plasma generator  32 , the fed process gas is excited by a high-frequency wave to generate plasma, and then the generated plasma is diffused toward a center of the substrate storage section  34 . Thus, the plasma is radiated to the substrate  52  held by the substrate holding section  26  to perform ashing for a resist film on the substrate  52 . Then, after the ashing operation, a gas inside the substrate storage section  34  is externally exhausted by the vacuum pump  27 . The conductance-variable valve  35  placed between the vacuum pump  27  and the substrate storage section  34  controls an effective exhausting speed of the exhaust out of the vacuum pump  27  to control a partial pressure inside the substrate storage section  34 . Connected to the substrate holding section  26  of the ashing chamber  30  is a bias applying power supply which is able to apply a substrate bias to the substrate holder  62  held by the substrate holding section  26 , the bias applying power supply being not shown in the drawing. Then, energy of the plasma radiated to the substrate  52  can be controlled by means of controlling the substrate bias to the substrate holder  62 . 
         [0039]    Explained next with reference to  FIG. 6  is a structure of the CVD chamber  40 .  FIG. 6  is a cross sectional view of the CVD chamber  40  taken along the line E-E of  FIG. 1 . 
         [0040]    As shown in  FIG. 6 , the CVD chamber  40  principally includes an MFC  21 , a plate electrode  41  installed in a substrate storage section  44 , the substrate storage section  44  for storing the substrate carrier  60  sent out of the ashing chamber  30 , a substrate holding section  26 , a vacuum pump  27 , and a conductance-variable valve  35 . 
         [0041]    Each of both left and right sides of the substrate storage section  44  is provided with one MFC  21 , and one plate electrode  41 . A high-frequency power is applied through a high-frequency power supply, not shown in the drawing, to each plate electrode  41 . In the meantime, an appropriate amount of process gas regulated by the MFC  21  is supplied from a process gas supply source, not shown in the drawing, to the substrate storage section  44 . Furthermore, while the substrate holding section  26  being connected to a ground potential, connected to the substrate holder  62  held by the substrate holding section  26  is a bias applying power supply which is able to apply a substrate bias, the bias applying power supply being not shown in the drawing. Then, a film forming performance is controlled through controlling the substrate bias applied to the substrate holder  62 . As the process gas for a CVD operation, a commonly used carbon-based gas mixture can be used. The MFC  21  and the substrate storage section  44  are so connected with a tube  46  that the process gas is introduced from the MFC  21  through the tube  46  to the substrate storage section  44 . Under the condition, when the high-frequency power is applied to the plate electrode  41 , the process gas introduced from the MFC  21  to the substrate storage section  44  discharges between the substrate holder  62  and the plate electrode  41  to become plasma in the substrate storage section  44 . The process gas energized into plasma reaches a surface of the substrate  52 , which is held by the substrate holding section  26  at a center of the substrate storage section  44 , to form a thin film on the substrate  52  as expected. Then, after the film forming operation, the gas inside the substrate storage section  44  is externally exhausted by the vacuum pump  27 . In the meantime, connected to the substrate holding section  26  of the CVD chamber  40  is a bias applying power supply which is able to apply a substrate bias to the substrate holder  62  held by the substrate holding section  26 , the bias applying power supply being not shown in the drawing. Then, characteristics of the thin film formed on the substrate  52  can be controlled by means of controlling the substrate bias to the substrate holder  62 . 
         [0042]    Explained next is a series of processes for manufacturing a magnetic recording medium  70  by using the magnetic recording medium manufacturing device  10 . 
         [0043]      FIGS. 7A to 7D  are drawings for explaining processes of manufacturing the magnetic recording medium  70  by using the magnetic recording medium manufacturing device  10 ; namely,  FIG. 7A  is a cross sectional view for explaining an ion implantation,  FIG. 7B  is a cross sectional view of a substrate  80  having a resist film after the ion implantation,  FIG. 7C  is a cross sectional view of a substrate  84  having a magnetic recording layer after an ashing operation, and  FIG. 7D  is a cross sectional view of a magnetic recording medium  70 . 
         [0044]    At first, a substrate with a resist film  71 ; in which a magnetic film  72 , a protective film  74 , and a resist film  76  are laminated in this order on a base substrate  73  shown in  FIG. 7A ; is placed into the substrate carrier  60  by using a transfer device at the start point  54  shown in  FIG. 1 . The placement of the substrate with a resist film  71  into the substrate carrier  60  is carried out through holding the substrate with a resist film  71  by using the substrate holder  62 , as described above. The substrate with a resist film  71  has its contour shaped almost like a disc in the same manner as the base substrate  73  has. Used as the base substrate  73  is, for example, a nonmagnetic substrate such as an aluminum alloy substrate, a silicon glass substrate, and the like. Preferably, the magnetic film  72  should be provided with an ordered structure having a high magnetic anisotropy. The protective film  74  is a coating film, for example, made of diamond like carbon and so on. The resist film  76  is a thin film of a resist material having a certain pattern. 
         [0045]    The substrate with a resist film  71  is placed into the substrate carrier  60 , and then the substrate carrier  60  passes through the bottom horizontal passage  50   d  shown in  FIG. 1 , and arrives at the load lock chamber  56 . After the pressure inside the load lock chamber  56  is lowered through vacuum evacuation down to a pressure level that does not significantly affect the pressure inside the ion implantation chamber  20 , the substrate carrier  60  passes through the load lock chamber  56  and moves into the ion implantation chamber  20 , if the load lock chamber  56  is opened. Then, engaging with the substrate holding section  26  in the ion implantation chamber  20 , the substrate carrier  60  is held almost at a center of the ion implantation chamber  20 . Subsequently, an ion beam  77  from the ion generator  23  is radiated to a surface of the substrate with a resist film  71  for ion implantation (Refer to  FIG. 7A ). As the ion implantation is carried out into the surface of the substrate with a resist film  71 , a magnetic force decreases at a part with implantation  78  where the ion implantation is carried out through an opening area of the resist film  76 , as shown in  FIG. 7B . 
         [0046]    Next, the substrate carrier  60  moves from the ion implantation chamber  20  through the connecting part  58 , shown in  FIG. 1 , into the ashing chamber  30 . Then, engaging with the substrate holding section  26  in the ashing chamber  30 , the substrate carrier  60  is held almost at a center of the ashing chamber  30 . Subsequently, the plasma from the plasma generator  32  is radiated to a surface of a substrate with an ion-implanted resist film  80  for ashing and removing the resist film  76  and the protective film  74 . As a result, formed is a substrate with a magnetic recording layer  84 ; in which a characteristic magnetic film  82  having a certain magnetic characteristics is laminated on the base substrate  73 , as shown in  FIG. 7C . 
         [0047]    Next, the substrate carrier  60  moves from the ashing chamber  30  through the connecting part  58 , shown in  FIG. 1 , into the CVD chamber  40 . Then, engaging with the substrate holding section  26  in the a CVD chamber  40 , the substrate carrier  60  is held almost at a center of the CVD chamber  40 . Subsequently, while a process gas is supplied to the substrate storage section  44 , a high-frequency power is applied to the plate electrode  41 , so that the supplied process gas is energized into plasma inside the substrate storage section  44 . Then, the process gas energized into plasma is radiated to the substrate with a magnetic recording layer  84  to form a CVD protective film  86  having a flat surface on the substrate with a magnetic recording layer  84 . According to those processes described above, manufactured is the magnetic recording medium  70  in which the CVD protective film  86  is laminated on the substrate with a magnetic recording layer  84 , as shown in  FIG. 7D . 
         [0048]    Next, under the condition that the pressure inside the load lock chamber  56  is equal to the atmospheric pressure, the substrate carrier  60  holding the magnetic recording medium  70  passes through the load lock chamber  56  and moves to the front vertical passage  50   a . Furthermore, as the substrate carrier  60  moves from the front vertical passage  50   a  through the top horizontal passage  50   c  to the rear vertical passage  50   b , the magnetic recording medium  70  is transferred back to the start point  54 . Then, being dismounted out of the substrate carrier  60  by using the transfer device at the start point  54 , the magnetic recording medium  70  can be removed from the magnetic recording medium manufacturing device  10 . 
         [0049]    In the magnetic recording medium manufacturing device  10  structured as described above, the ion implantation chamber  20 , the ashing chamber  30 , as well as the CVD chamber  40  are connected in series under the vacuum condition so that the processes of the ion implantation, the ashing and the CVD can be carried out continuously without any contact with the atmosphere. Therefore, this arrangement makes it possible to avoid a quality deterioration of the magnetic recording medium  70  owing to a bad effect of the atmosphere. 
         [0050]    Furthermore, the magnetic recording medium manufacturing device  10  makes it possible to form the CVD protective film  86  on a surface of the substrate  52 . Accordingly, it becomes possible to avoid damage of the magnetic recording medium  70  due to a defect, and also to surely avoid a quality deterioration of the magnetic recording medium  70  owing to a bad effect of the atmosphere. 
         [0051]    Moreover, in the magnetic recording medium manufacturing device  10 , the substrate  52  is transferred into the process chambers  20 ,  30 , and  40  while being held by the substrate carrier  60 . Therefore, when being transferred, the substrate  52  exposes its surfaces in the substrate holder  62  in a right-angle direction in relation to its moving direction. Accordingly, the substrate  52  can be set ready for processing instantly by simply holding the transferred substrate carrier  60  in the process chambers  20 ,  30 , and  40 . 
         [0052]    With respect to the embodiment according to the present invention as described above, the present invention is not limited to the above embodiment and various other variations may be made. 
         [0053]    In the above embodiment, the substrate transfer passage  50  is so placed as to be circular in a vertical plane in relation to the process chambers  20 ,  30 , and  40 . Alternatively, instead of the placement of the passage in a vertical plane, the substrate transfer passage  50  may as well be placed to be circular in a horizontal plane. Furthermore, the magnetic recording medium manufacturing device  10  may be prepared in any arrangement other than such a circular inline mode. 
         [0054]    In the above embodiment, the substrate carrier  60  is driven by the driving rollers  64 . Since the present invention is not limited to such an arrangement, alternatively possible may be another arrangement in which, for example, a line is placed in the magnetic recording medium manufacturing device  10  and the substrate carrier  60  moves along the line. Furthermore, in the above embodiment, the number of substrates, i.e., the substrate  52  provided in plurality, to be held in the substrate carrier  60  at the same time is 3. Alternatively, the number of substrates may be 2 or less, or 4 or more, instead of the number of substrates at 3. 
         [0055]    In the above embodiment, the substrate carrier  60  is held in the process chambers  20 ,  30 , and  40  by means of the engagement with the substrate holding section  26 . Since the holding method is not limited to such engagement, alternatively the substrate carrier  60  may be held in the process chambers  20 ,  30 , and  40  by any other method. 
         [0056]    In the above embodiment, a mono-atomic ion beam is adopted. Since the type of ion beams is not limited to that of such a mono-atomic ion beam, alternatively adopted may be for example a cluster ion beam that includes a number of atoms in a bunch. 
         [0057]    The ion implantation chamber  20 , the ashing chamber  30 , and the CVD chamber  40  are connected in series in the above embodiment. Instead, adopted may be another arrangement in which a processing chamber for preheating or cooling the substrate  52  is placed among the process chambers  20 ,  30 , and  40 . Furthermore, a buffer chamber for controlling the pressure in the process chambers  20 ,  30 , and  40  may as well be placed. 
         [0058]    In the above embodiment, the plasma is generated in the CVD chamber  40  by means of applying a high-frequency power to the plate electrode  41 . Alternatively, a loop-shaped inductive coupling antenna may be placed instead of the plate electrode  41  to generate inductive coupling high-frequency plasma by means of applying a high-frequency power to the antenna. 
       INDUSTRIAL APPLICABILITY 
       [0059]    The magnetic recording medium manufacturing device according to the present invention can be applied in various electronic industries using semiconductors. 
       REFERENCE NUMERALS 
       [0000]    
       
           10 . Magnetic recording medium manufacturing device 
           20 . Ion implantation chamber 
           30 . Ashing chamber 
           32 . Plasma generator 
           40 . CVD chamber 
           41 . Plate electrode (parallel plate electrode) 
           60 . Substrate carrier 
           62 . Substrate holder 
           64 . Driving rollers (driving mechanism) 
           70 . Magnetic recording medium (substrate) 
           71 . Substrate with a resist film (substrate) 
           76 . Resist film 
           80 . Substrate with an ion-implanted resist film (substrate) 
           86 . CVD protective film (thin film)