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    • 4. 发明专利
    • PRODUCTION OF COLOR THREE-DIMENSIONAL MODEL
    • JPH07205551A
    • 1995-08-08
    • JP1779194
    • 1994-01-18
    • NIPPON TELEGRAPH & TELEPHONE
    • IWAZAWA AKIRAFUNAKOSHI NORIHIROISHIKAWA KOICHIRO
    • B41M5/34B41M5/26B41M5/28B41M5/30B41M5/46G03C1/73
    • PURPOSE:To produce a color three-dimensional model by a method wherein thermal color forming dyes of blue, red and yellow and dyes having absorbing regions only with respect to specific laser beam wavelengths are mixed with a binder and a resin powder to prepare respective mixtures which are, in turn, encapsulated to prepare respective microcapsules and these microcapsules are mixed to form a thin layer which is, in turn, irradiated with laser beam. CONSTITUTION:A microcapsule is prepared by encapsulating a dye having an absorbing region only with respect to the wavelength of first laser beam, a blue thermal color forming dye, a binder and a resin powder. In the same way, a microcapsule including a dye having an absorbing region only with respect to the wavelength of second laser beam, a red thermal color forming dye, a binder and a resin powder and a microcapsule including a dye having an absorbing region only with respect to the wavelength of third laser beam, a yellow thermal color forming dye, binder and a resin powder are prepared. Three kinds of the microcapsules are mixed to form a mixture which is, in turn, formed into a thin layer. This thin layer is irradiated with laser beams 3 from a three-wavelength laser head 1 to form a color three-dimensional model 9.
    • 8. 发明专利
    • JPH05340859A
    • 1993-12-24
    • JP15319892
    • 1992-06-12
    • NIPPON TELEGRAPH & TELEPHONEOMATA SADAO
    • FUNAKOSHI NORIHIROOMATA SADAO
    • G01N3/40
    • PURPOSE:To obtain a constant-pressure type hardness detector which provides each measurement value with high reliability even if the entire data is not averaged by driving a servo function along a properly set pressurized profile curve for reducing scattering of error due to measurement. CONSTITUTION:A hardness detector utilizes the principles of a vibrator, detects the frequency fluctuation according to the hardness of a specimen 7 to be inspected, and then detects the hardness according to the amount of frequency fluctuation. Then, it is provided with a vibrator 1 contacting the specimen 7. a vibration drive system 2 of the vibrator 1, a pressure sensor 3 for detecting the contact pressure between the vibrator 1 and the specimen 7. a movement traveling mechanism 4 for pressing the vibrator 1 to the specimen 7, and a servo motor 5 for connecting the pressure sensor 3 and at the same time operating the movement traveling mechanism 4 and the servo motor 5 allows the vibrator 1 to contact the specimen 7 at a constant pressure/speed.