公开(公告)号：JPH08100269A

公开(公告)日：1996-04-16

申请号：JP23784094

申请日：1994-09-30

Applicant: KAO CORP

Inventor： WAKABAYASHI SHIGEMI ,  KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  SHIGA AKIRA

IPC: C23C16/50 ,  C23C16/27 ,  C23C16/511 ,  C23C16/54 ,  G11B5/84

Abstract: PURPOSE: To provide a thin film producing device provided with a waveguide for suppressing the generation of electric discharge in the waveguide. CONSTITUTION: This thin film producing device is provided with a microwave CVD device 1 for introducing a microwave into a plasma excitation chamber 13 through a waveguide 12, converting a raw gas introduced into the chamber 13 to plasma with the microwave and irradiating a material to be vapor- deposited with the ion in the plasma and a device 2 to travel the material. The waveguide is packed with a material for suppressing an electric discharge. Consequently, an electric discharge is not generated in the waveguide 12, and the microwave output is increased, as required.

公开(公告)号：JPH0836732A

公开(公告)日：1996-02-06

申请号：JP17405594

申请日：1994-07-26

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/72 ,  G11B5/84

Abstract: PURPOSE:To obtain a highly durable medium by interposing a substance having a hydrophilic group and a hydrophobic group between a magnetic layer of a metallic thin film type and a protecting layer. CONSTITUTION:A Co magnetic metal film 2 is formed by an oblique vapor deposition method or the like manner on a polyethylene terephthalate (PET) film 1. A solution of toluene including a silane-based coupling agent having a hydrophilic group and a hydrophobic group, or the like is applied on the surface of the film 2, to form a coupling agent, layer 3. A diamond-like carbon film 4 is formed on the layer 3. Then, a fluoric inert liquid is applied on the film 4 to form a lubricating layer 5. Accordingly, a highly durable medium is obtained.

公开(公告)号：JPH0836729A

公开(公告)日：1996-02-06

申请号：JP17108294

申请日：1994-07-22

Applicant: KAO CORP

Inventor： WAKABAYASHI SHIGEMI ,  KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  SHIGA AKIRA

IPC: G11B5/66 ,  G11B5/72 ,  G11B5/725 ,  G11B5/84

Abstract: PURPOSE:To improve a durability of a lubricating function of a protecting film by forming fine recessed parts in a diamond-like carbon film set on a recording film and interposing a lubricant. CONSTITUTION:A diamond-like carbon film 13 is set by a CVD device or the like on the surface of a Co magnetic film 12. Then, the film 13 is processed by plasma etching, hereby fine holes 14 are formed with a predetermined surface density. A fluoric lubricant is applied on a surface of the film 13. Ultrasonic vibrations are applied to the film 13 for a predetermined time. Accordingly, such a medium that runs well for a long time, has superior recording/ reproducing properties and is sufficiently durable, is obtained.

公开(公告)号：JPH0835069A

公开(公告)日：1996-02-06

申请号：JP17108194

申请日：1994-07-22

Applicant: KAO CORP

Inventor： WAKABAYASHI SHIGEMI ,  KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  SHIGA AKIRA

IPC: C23C16/26 ,  C23C16/27 ,  C23C16/50 ,  C23C16/511 ,  C23C16/54 ,  G11B5/84

Abstract: PURPOSE:To form a protective film with excellent efficiency, at the time of forming a diamond-like carbon film as a protective film on the surface of a metallic film on the surface of a magnetic recording medium, by adopting a microwave ECR plasm CVD method. CONSTITUTION:For protecting the surface of a magnetic recording medium in which a magnetic film by the fine powder of a magnetic metal by Fe, Co or Ni-base metals or alloys is formed on one side of a wide, long and thin suppporting body by a nonmagnetic polymer material by a vacuum deposition method or the like, the metal magnetic film of a magnetic recording medium 11 is wound in a state in which it is not abutted on a columnar cooling can roll 12 through a guide roll 13. While it is conveyed at a high speed of about 50m/, the space of an electrode sheet 14 and the cooling can roll 12 is fed with gaseous hydrocarbon such as benzene as a carbon source, high frequency voltage is impressed between the space of the cooling can roll 12 and electrode sheet 14 by an electric source 15 to generate plasma discharge, and carbon produced by the thermal decomposition of benzene is formed on the metal magnetic film as a diamond-like carbon protective film.

公开(公告)号：JPH07334831A

公开(公告)日：1995-12-22

申请号：JP12491294

申请日：1994-06-07

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/72 ,  G11B5/84

Abstract: PURPOSE:To obtain a recording medium excellent in protecting function and lubricating function by forming a diamondlike carbon film on a recording film formed on a substrate and then forming a graphite film on the surface of the diamondlike carbon film. CONSTITUTION:A magnetic film 2 of Co is formed on a PET film 1 by depositing Co particles using a diagonal vapor deposition device. A diamondlike carbon film 3 is formed on the magnetic film 2 with benzene and carbon dioxide as reactive gases using a CVD device. The surface layer of the film 3 is then modified by irradiation with IR laser beams having 8,000Angstrom wavelength or electron beams having 100eV at 1 deg. incident angle to form a graphite film 4.

公开(公告)号：JPH07326048A

公开(公告)日：1995-12-12

申请号：JP11615494

申请日：1994-05-30

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: C09D171/02 ,  C09D171/00 ,  G11B5/84

Abstract: PURPOSE:To simplify a producing process, to reduce cost and to obtain a high quality magnetic recording medium by carrying out stages from the formation of a metallic magnetic film to the application of a lubricant in vacuum vessels. CONSTITUTION:A metallic magnetic film is formed on a substrate 1 made of a PET film by diagonal vapor deposition in a 1st vacuum vessel A and a metallic protective film is formed on the magnetic film in 100Angstrom thickness by CVD in a 2nd vacuum vessel B. The PET film 1 with the magnetic film and the protective film is allowed to run into a 3rd vacuum vessel C having about 1X10 Torr degree of vacuum, the film 1 is brought into contact with a heating roll 2 and a lubricant soln. is sprayed on the protective film on the film 1 from an ultrasonic spray nozzle 3. The lubricant soln. is prepd. by diluting Demnum S(R) as a lubricant with perfluoro-polyether to 0.1wt.% concn. After drying with the heating roll 2 and a heating lamp 4, the film 1 is wound around a winding roll 5 and then slit to about 8mm width to obtain the objective magnetic tape for 8mm VTR.

公开(公告)号：JPH07311939A

公开(公告)日：1995-11-28

申请号：JP10240794

申请日：1994-05-17

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/84

Abstract: PURPOSE:To enhance the traveling performance while eliminating the warp by providing a thin metal film forming means for forming a back coat film, and an abrasive means for making coarse the surface of back coat film thus formed. CONSTITUTION:At the position of a cooling can roll, a back coat film (Cu-Al film) is formed and then it is made coarse by a coarsening means 10. Subsequently, the back coat film is fed through an oxygen bombard processor 9b and wound about a winding roll 3b. The back coat thus produced has an appropriate surface roughness for lowering the frictional coefficient and enhancing the traveling performance thus realizing enhancement in the recording/reproducing characteristics.

公开(公告)号：JPH07296382A

公开(公告)日：1995-11-10

申请号：JP8288094

申请日：1994-04-21

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/86

Abstract: PURPOSE:To realize a low cost mass-production of software by disposing means for cooling a first magnetic recording medium closely to a transfer head dis posed oppositely to a guide means. CONSTITUTION:A mother tape 1 fed from a feed reel is made to touch arround a transfer drum 2 made of a high permeability material (permalloy) and rolled around a rewinding side reel (not shown). The motor tape 1 and a blank tape 3 are made to touch around the transfer drum 2 cooled down to 80 deg.K, as shown in the figure, thus performing the magnetic field transfer in a vacuum chamber of 10 Torr. The transfer is effected by applying a bias field from a ring type magnetic head 4 disposed oppositely to the transfer drum 2. The transfer operation can be repeated 16000 times before the output of the mother tape 1 drops below 3dB.

公开(公告)号：JPH07272271A

公开(公告)日：1995-10-20

申请号：JP5969494

申请日：1994-03-30

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/86 ,  C21D9/38 ,  C22C38/46

Abstract: PURPOSE:To obtain a transfer device in which a mother tape is hardly scratched, durability is superior, and transfer to many blank tapes is quickly performed. CONSTITUTION:An AC bias magnetic field is impressed to a mother tape M running between a supplying side roll 1a and a wind up side roll 2b and a blank tape B1 running between a supplying side roll 2a and a wind up side roll 2b from a magnetic head 5 on a transfer drum 4, an information signal of the mother tape M is transferred to the blank tape B1. And when transfer operation to the blank tape B1 is finished, a base plate 8 is slid, it is fitted to a blank tape B2 between a supplying side roll 3a and a wind up side roll 3b, an AC bias magnetic field is impressed to the blank tape B2 running between the supplying side roll 3a and the wind up side roll 3b in the reverse direction for the running direction of the blank tape B1, and an information signal of the mother tape M is transferred to the blank tape B2.

公开(公告)号：JPH07254150A

公开(公告)日：1995-10-03

申请号：JP4438094

申请日：1994-03-15

Applicant: KAO CORP

Inventor： KITAORI NORIYUKI ,  YOSHIDA OSAMU ,  MIZUNOYA HIROHIDE ,  WAKABAYASHI SHIGEMI ,  SHIGA AKIRA

IPC: G11B5/86

Abstract: PURPOSE:To easily execute copying at a low cost by making it possible to execute copying without requiring a mirror mother VTR and mirror mother tape. CONSTITUTION:A blank tape B1 transferred with prescribed information signals by a master VTR and a blank tape B2 of the same kind has the blank tape B1 are mounted at a transfer device shown in Fig. At this time, the tape B1 and the blank tape B2 are mounted at the magnetic transfer device by superposing both tapes in such a manner that the growth direction 1M of the columns in the magnetic metallic film 1 of the tape B1 and the growth direction 1B of the columns in the magnetic metallic film 1 of the blank tape B2 intersect with each other and that the magnetic metallic films l come into contact with each other. A bias magnetic field is perpendicularly impressed to the tapes from the base side of the blank tape B2 by a ring type magnetic head 5, by which the recording information signals of the tape B1 are transferred to the blank tape B2. Next, the blank tape B3 of the same kind as the tape B2 recorded with the information signals used and the information signals are transferred to the tape B3 in the same manner as for the transfer from the tape B1 to the blank tape B2.