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    • 33. 发明专利
    • PHOTOCHROMIC ORGANOPOLYSILOXANE AND ITS PRODUCTION
    • JPH10101802A
    • 1998-04-21
    • JP27555296
    • 1996-09-26
    • DOW CORNING TORAY SILICONEIRIE MASAHIRO
    • NAKAJIMA HISATAKAIRIE MASAHIRO
    • G03C1/73C08G77/392
    • PROBLEM TO BE SOLVED: To obtain the subject compound useful for an optical memory, etc., capable of causing change in molecular structure followed by change in spectrum by irradiation with ultraviolet light and restoring the molecular structure to its original state by irradiation with visible light, by bonding a specific photochromic organic group to silicon in the molecule. SOLUTION: This photochromic organopolysiloxane is obtained by bonding an organic group of formula I [R is H or a monofunctional organic group (Z ) which is an alkyl, an aryl, etc., or a bifunctional organic group (Z ) which is a group containing an alkylene chain and an arylene (X ), an ester bond (X ), an amide bond (X ) or an ether bond (X ) or is an alkylene and one or more R s are Z ; (n) is 3 or 4] to Si in a polyorganosiloxane molecule. The compound is obtained by reacting a polyorganosiloxane containing H bonded to Si in the molecule with a compound of formula II [R is a monofunctional organic group (Z ) which is a group containing an alkenyl (X ) and X , X , X or X or is X or Z and one or more R s are Z in the presence of a catalyst for a hydrosilylating reaction.
    • 40. 发明专利
    • REPRODUCING METHOD OF OPTICAL RECORDING MEDIUM
    • JPH05128523A
    • 1993-05-25
    • JP29160191
    • 1991-11-07
    • SANYO ELECTRIC COIRIE MASAHIRO
    • TSUJIOKA TSUYOSHIIRIE MASAHIRO
    • G11B7/00G11B7/005G11B7/30G11B20/00
    • PURPOSE:To remove a cross-talk component by a method wherein a beam of reflected replay light of a multiple recording medium is separated into corresponding components, they are detected independently and an operation processing operation is executed to a part between signals. CONSTITUTION:Rd represents a reflection factor at a time when no recording operation is executed; Rc, Rb and Ra are reflection factors at a time when lambdab and lambdaa as well as lambdaa and lambdab are irradiated respectively and a recording operation is executed. DELTAR1 (Rb to Rd) not equal to DELTAR2 (Ra to Rc) and deltaR (Ra to Rb) not equal to deltaR* (Rc to Rd). At this time, a reflection factor at lambdaa corresponds to a value which has changed Rb to Rd at an amplitude of DELTAR1/2 according to lambdaa (omega1) at a part not irradiated with lambdab. Consequently, a change DELTAR ch1 (proportional replay output) in the reflection factor at lambdaa is a value which has amplitude-modulated a signal omega by omega2 (a signal at lambdab) and which has superposed the signal omega2. deltaR ch2 at lambdab can be found in the same manner. When xsi...eta are used as cross-talk parameters, nonlinear cross-talk terms corresponding to a product exist in a standardized reproduced output in addition to linear terms. In order to reduce a cross-talk component, a specific operation is executed by using respective standardized replay outputs, xsi and eta, and a portion mixed with a piece of information is removed.