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    • 61. 发明专利
    • VACUUM TREATMENT SYSTEM AND CONTROL METHOD THEREOF
    • JPH01319675A
    • 1989-12-25
    • JP15231188
    • 1988-06-22
    • HITACHI LTD
    • KATAOKA HIROYUKIFURUSAWA KENJIABE KATSUODAIROKU NORIYUKIKAWANA TAKESHIKOKADO YUICHINAKAZATO JUNHAYASHI MASAAKI
    • C23C14/52C23C14/56
    • PURPOSE:To allow the free additional installation and removal of vacuum chambers and to improve the treatment speed over the entire part of the system by connecting plural units of the vacuum chambers by connecting means and providing means of synchronizing the carry in and out of objects to be treated between the vacuum chambers. CONSTITUTION:The respective vacuum chambers including a charge heating chamber 3, a heating chamber 4, sputtering chambers 5, 6, a magnetic characteristic measuring atmosphere isolating chamber 7, a CVD chamber 8, a cooling chamber 9, a taking out chamber 10, etc., are joined by the means such as door valve-contg. flanges 11, etc., to form the vacuum treatment system. The operations of the flanges 11 are controlled by the vacuum chambers on the side the carry out ports of which are connected to the flanges 11. Chamber control computers 13 are mounted to the respective vacuum chambers and are connected with each other by communication circuits 31; further, a host computer 14 to control the entire part of the system is connected. The operations to repeat the operations for the carry in of pallets, treatment or measurement and carry out of the pallets are programmed in the chamber control computers 13. The above-mentioned two computers 13, 14 operate cooperatively to synchronize the carry in and out operations between two units of the vacuum chambers.
    • 62. 发明专利
    • SPUTTERING ELECTRODE
    • JPH01259167A
    • 1989-10-16
    • JP8503988
    • 1988-04-08
    • HITACHI LTD
    • KATAOKA HIROYUKIABE KATSUOFURUSAWA KENJI
    • C23C14/36C23C14/35
    • PURPOSE:To keep the intensity of a magnetic field constant with a simple mechanism by separating a magnet unit into a magnetic pole part and a yoke part and providing the transferring mechanisms by which the former and the latter are transferred in the specified directions respectively. CONSTITUTION:A magnet unit is separated into a magnetic pole part 1 and a yoke part 5 and the magnetic pole part 1 is constituted by integrally joining a central magnet 2 to the peripheral magnets 3 with the fixing members 4. A first and second transferring mechanisms 6, 9 are connected to the magnetic pole part 1 and the yoke part 9 respectively so that the magnetic pole part 1 and the yoke part 9 can be transferred. The magnetic pole part 1 is reciprocated and transferred by the transferring mechanism 6 on the straight line shown by an arrow (a) via a shaft 8 with a motor 7 in the face parallel to the surface of a target plate 13. On the other hand, the yoke part 5 is reciprocated and transferred by the transferring mechanism 9 on the straight line shown in an arrow (b) via a shaft 11 with a motor 10 to the vertical direction for the magnetic pole part 1.
    • 64. 发明专利
    • PRODUCTION OF MAGNETIC DISK
    • JPS61294638A
    • 1986-12-25
    • JP13408985
    • 1985-06-21
    • HITACHI LTD
    • KATAOKA HIROYUKIYONEKAWA TAKAOABE KATSUO
    • G11B5/72C09D171/02G11B5/82G11B5/84
    • PURPOSE:To decrease the adhesive power of a magnetic disk to a magnetic head by alternately laminating films consisting of an oxide, nitride or carbide and having different hardnesses on the surface of a magnetic medium and forming a lubricating layer on the uppermost layer. CONSTITUTION:Silicon nitride layers 104 and silicon oxide layers 103 are formed into 4 layers on the surface of the magnetic disk substrate 2. These layers are made into the multi-layered structure consisting of the thin films having the high hardness and the thin films having the low hardness and are so formed that the uppermost layer acts as the protective film exhibiting the low adhesive power by destructing the low hardness surface of said layer when the magnetic head tightly contacts with the surface of the protective film. The destruction is made difficultly propagable to the lower parts by the generation of shears on the adhered surfaces between the films of the multi layers. The magnetic disk having the small adhesive power to the magnetic head is thus obtd.
    • 65. 发明专利
    • AC SPUTTERING DEVICE
    • JPS61174373A
    • 1986-08-06
    • JP16493384
    • 1984-08-08
    • HITACHI LTD
    • KATAOKA HIROYUKIYONEKAWA TAKAOABE KATSUO
    • C23C14/54C23C14/40
    • PURPOSE:To control precisely a film forming speed by measuring the DC bias voltage to be applied to a sputtering electrode, comparing the measured voltage with a set value and controlling the bias voltage according to the deviation therebetween. CONSTITUTION:The AC voltage generated by an AC power source 7 is applied via a coaxial cable 5 and a transmission type watthour meter 6 to an impedance matching device 4. The matched AC voltage is applied to the sputtering electrode 3. Energy is thereby exerted to the plasma in a vacuum vessel 1 and a target 31 disposed on the electrode 3 is sputtered, by which the film is formed on a substrate 21. The DC bias voltage applied to the electrode 3 is measured by a measuring means 9 and the output thereof is applied to a means 10 for controlling the output of an AC power source. The means 10 compares the output of the measuring means 9 and the predetermined DC bias voltage and regulates the output of the AC power source 7 according to the deviation therebetween. The film forming speed is thus precisely controlled without being affected by the generation of Joule heat, etc., of the electrode 3, etc.