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    REVERSIBLE RECORDING MEDIUM AND RECORDING METHOD EMPLOYING THE SAME
    3.
    发明专利
    REVERSIBLE RECORDING MEDIUM AND RECORDING METHOD EMPLOYING THE SAME 失效

    公开(公告)号：JP2001030637A

    公开(公告)日：2001-02-06

    申请号：JP2000146980

    申请日：2000-05-18

    Applicant: AGENCY IND SCIENCE TECHN ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  RICOH KK ,  OKAMURA OIL MILL

    Inventor： FUTAMURA YOSHIROU ,  SUGIMOTO HIROYUKI ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  KIDA YOSHIE

    IPC: G02F1/13 ,  B41M5/26 ,  B41M5/36 ,  C09K19/02 ,  C09K19/36 ,  G02F1/133 ,  G11B7/24 ,  G11B7/244

    Abstract: PROBLEM TO BE SOLVED: To permit rewriting, reduced in scattered light reflected from a recording medium, by a method wherein the crystallizing condition of a liquid crystal, in which the ratio of fore light scattering is larger compared with rear light scattering, is obtained. SOLUTION: The recording layer 3 of a reversible recording body is constituted of a liquid crystal compound or a recording material, containing the liquid crystal compound and pinched between two sheets of substrates 2, 4 wherein at least one of them is transparent, while the recording layer 3 can be formed so as to have a crystallizing condition that the strength of fore scattering is stronger than a rear scattering strength by cooling the recording material gradually from an isotropic phase or a liquid crystal phase. A reversible recording method forms the crystallizing condition, in which the fore scattering strength is stronger than the rear scattering strength, by gradually cooling the recording material of the reversible recording medium from an isotropic phase or a liquid crystal phase.

    REVERSIBLE RECORDING MEDIUM AND RECORDING METHOD USING THE REVERSIBLE RECORDING MEDIUM
    4.
    发明专利
    REVERSIBLE RECORDING MEDIUM AND RECORDING METHOD USING THE REVERSIBLE RECORDING MEDIUM 失效

    公开(公告)号：JP2000251317A

    公开(公告)日：2000-09-14

    申请号：JP4905299

    申请日：1999-02-25

    Applicant: AGENCY IND SCIENCE TECHN ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  RICOH KK ,  OKAMURA OIL MILL

    Inventor： SUGIMOTO HIROYUKI ,  FUTAMURA YOSHIROU ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  KIDA YOSHIE

    IPC: G11B7/244 ,  B41M5/36 ,  G11B7/24

    Abstract: PROBLEM TO BE SOLVED: To improve the degree of whiteness when light is scattered with a thermosensitive recording layer which can exhibit a white display state by having the thermosensitive recording layer and a light absorption layer as well as transparent layers between the thermosensitive recording layer and the light absorption layer and constituting >=1 transparent layers of transparent material having the refractive index lower than the refractive index of the thermosensitive recording layer or the other transparent layers. SOLUTION: The one or more transparent layers consisting of the transparent material are disposed between the thermosensitive recording layer and the light absorption layer and the low-refractive index layer having the low refractive index is made to exist in these transparent layers. The base of the thermosensitive recording layer may be used as the transparent layer when the transparent material is used as the base of the thermosensitive recording layers. The transparent layers are composed of the two layers, the base layer of the high refractive index and the low-refractive index layer of the low refractive index. The cholesteric liquid crystal compound expressed by formula I and/or formula II or a mixture containing the compound is used as the thermosensitive recording material. In the equation I, n=5, 6, 7, R=H and CH3 and in the formula II, n=2 to 10.

    INTERLOCK POLYMER COMPRISING BIFUNCTIONAL 2-CATENANE DERIVATIVE
    6.
    发明专利
    INTERLOCK POLYMER COMPRISING BIFUNCTIONAL 2-CATENANE DERIVATIVE 失效

    公开(公告)号：JPH0948849A

    公开(公告)日：1997-02-18

    申请号：JP19958795

    申请日：1995-08-04

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： SHIMADA SATORU ,  TAMAOKI NOBUYUKI ,  ISHIKAWA KEIICHIRO

    IPC: C08G69/00 ,  C08G69/26

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject polymer composed from a monomer having an interlock structure, not having a chemical bond between the repeating units, and useful as a raw material for functional materials such as polymer elastomers, etc. SOLUTION: An interlock polymer comprises a 2-catenane derivative of formula I (n is an integer of 0-2; X is an integer). The compound of formula I is obtained e.g. by reacting a 2-catenane derivative of formula II as a starting raw material with copper borofluoride, reacting the copper ion-introduced product with adipic dichloride and subsequently reacting the obtained compound with a cyanide ion to remove the copper ion. The bifunctional 2-catenane of formula II is obtained e.g. by cyclizing an amino-protected 10-aza-hexaethylene glycol with 2,4-bis-(4-hydroxyphenyl)-1,10-diazaphenanthroline by the method of Sovaju et al. and subsequently removing the protecting group from the product.

    RELOADABLE COLOR IMAGE RECORDING MEDIUM AND IMAGE FORMING METHOD BY LIGHT USING THE SAME
    8.
    发明专利
    RELOADABLE COLOR IMAGE RECORDING MEDIUM AND IMAGE FORMING METHOD BY LIGHT USING THE SAME 失效

    公开(公告)号：JP2000089398A

    公开(公告)日：2000-03-31

    申请号：JP25253398

    申请日：1998-09-07

    Applicant: AGENCY IND SCIENCE TECHN ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO

    Inventor： TAMAOKI NOBUYUKI ,  SO SHOEI ,  MATSUDA HIROO

    IPC: G02F1/13 ,  G03C1/00 ,  G03C1/73

    Abstract: PROBLEM TO BE SOLVED: To provide a reloadable color image recording medium by light of a short recording time and a color image recording method using the same. SOLUTION: This color image recording medium is formed by holding a compsn. obtd. by adding a 0.5 to 10 wt.% photochromic compd. to cholesteric liquid crystalline compds. having a mol.wt. of =35 deg.C between two sheets of substrates or films at least one of which are transparent or a mixture composed of these liquid crystalline compds. This color image forming method consists in subjecting the reloadable color image recording medium formed by holding the compsn. described above between two sheets of the substrates or films at least one of which are transparent to photoirradiation at a temp. at which the compsn. exhibits cholesteric liquid crystallinity or below, then rapidly cooling the recording medium down to a temp. below the glass transition tamp. at a rate of >=1 deg.C/sec.

    FULL-COLOR THERMAL RECORDING MATERIAL
    9.
    发明专利
    FULL-COLOR THERMAL RECORDING MATERIAL 失效

    公开(公告)号：JP2000044592A

    公开(公告)日：2000-02-15

    申请号：JP21759698

    申请日：1998-07-31

    Applicant: AGENCY IND SCIENCE TECHN ,  TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  RICOH KK ,  OKAMURA OIL MILL

    Inventor： TAMAOKI NOBUYUKI ,  MATSUDA HIROO ,  KIDA YOSHIE

    IPC: B41M5/323 ,  B41M5/28 ,  C07J9/00 ,  C09K9/02 ,  C09K19/36 ,  G11B7/244 ,  B41M5/30

    Abstract: PROBLEM TO BE SOLVED: To obtain a new liquid crystalline compound consisting of a specific cholesterol derivative, capable of exhibiting red color hard to be developed with conventional thermal recording materials, and useful as an erasable full- color thermal recording material or the like. SOLUTION: This new liquid crystalline compound consisting of a new cholesterol derivative is shown by formula I [A is an 1,5-hexadienylene of formula II (R is H or methyl); Y is a cholesterol residue as a result of eliminating the hydroxyl group from cholesterol; (n) is 5-7], e.g. 8,12-eicosadienoic diacid dicholesteryl ester. This liquid crystalline compound is useful as e.g. a full-color thermal recording material freed from such a problem being hard to present red color as to be involved in conventional erasable full-color thermal recording materials. This compound of formula I is obtained by reaction of a dicarboxylic acid such as 8,12-eicosadienoic diacid with the corresponding cholesterol in the presence of dicyclohexylcarbodiimide and 4-dimethylaminopyridine.

    PRODUCTION OF POLYMER HAVING INTERLOCK STRUCTURE
    10.
    发明专利
    PRODUCTION OF POLYMER HAVING INTERLOCK STRUCTURE 失效

    公开(公告)号：JPH0948848A

    公开(公告)日：1997-02-18

    申请号：JP19958495

    申请日：1995-08-04

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： TAMAOKI NOBUYUKI ,  SHIMADA SATORU

    IPC: C08G69/00 ,  C08G69/26 ,  C08G69/28

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject polymer for rubbers not losing their elasticity at extremely low temperatures in the space, etc., in a good yield by using a bifunctional monomer capable of polycondensing or addition-polymerizing with the functional groups of a bifunctional catenane having a specific structure as connection units. SOLUTION: (A) A bifunctional catenane [2] whose two cyclic units have amino groups, respectively, is polycondensed with (B) adipic acid dichloride. For example, 10-aza-hexaethylene glycol having a protected amino group is cyclized with 2,4-bis-(4-hydroxyphenyl)-1,10-diazaphenanthroline by the method of Sovaju et al., and the protecting group is subsequently removed from the product to give the bifunctional catenane [2]. The obtained catenane [2] is polymerized with adipic dichloride in the presence of triethylamine in methylene dichloride at room temperature to give the polymer. The catenane [2] of the interlock units and the connection units are preferably used in a reaction molar ratio of 1:1.

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