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    DYESTUFF FOR THERMAL TRANSFER RECORDING, INK COMPOSITION FOR THERMAL TRANSFER RECORDING AND TRANSFER SHEET
    91.
    发明专利
    DYESTUFF FOR THERMAL TRANSFER RECORDING, INK COMPOSITION FOR THERMAL TRANSFER RECORDING AND TRANSFER SHEET 失效

    公开(公告)号：JPH05169849A

    公开(公告)日：1993-07-09

    申请号：JP33707591

    申请日：1991-12-19

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OYAMA TSUKASA ,  SHIMOKAWA YASUSHI ,  AIDA ISAMU ,  KOSHIDA HITOSHI ,  TAKUMA HIROSUKE

    IPC: B41M5/385 ,  B41M5/388 ,  B41M5/39 ,  C09B29/09

    Abstract: PURPOSE:To obtain dyestuffs for thermal transfer recording having high sublimating speed and excellent image stability after transfer and an ink composition by using the dyestuffs being shown in specific chemical formula and having superior solubility to an ink solvent and the low melting point as the sublimating dyestuffs for thermal transfer recording. CONSTITUTION:In a thermal transfer recording system using sublimating dyestuffs, a transfer sheet, in which condenser paper, a PET film, etc., are coated with sublimating dyestuffs changed into ink, is employed, and the transfer sheet is heated selectively by a thermal head, thus conducting transfer to recording paper. Dyestuffs shown in general formula mentioned on the right are used as the sublimating dyestuffs at the time. In formula, R represents an alkyl group, a cycloalkyl group, an alkenyl group, etc., R -R a hydrogen atom, the alkyl group, an alkoxy group, a halogen atom, and R the hydrogen atom, the alkyl group, the cycloalkyl group, etc. Such dyestuffs are kneaded together with a binder resin and an organic solvent and/or water, thus obtaining an ink composition for thermal transfer recording.

    SECURITY INK
    92.
    发明专利
    SECURITY INK 失效

    公开(公告)号：JPH04320466A

    公开(公告)日：1992-11-11

    申请号：JP8851391

    申请日：1991-04-19

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KOSHIDA HITOSHI ,  AIDA ISAMU ,  TANAKA HIRONORI ,  OKUBO SHINYA ,  IRISATO YOSHIHIRO ,  TAKUMA HIROSUKE

    IPC: C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/50

    Abstract: PURPOSE:To obtain a security ink improved in colorant solubility, heat resistance, light resistance, molar absorptivity and economic profitability by mixing a specified near-infrared absorber with a cyclohexanone solvent. CONSTITUTION:This ink comprises a near-infrared absorber comprising a phthalocyanine pigment of formula I [wherein R1, R6 and R7 are each H, linear or branched alkyl, cyclohexylalkyl, alkoxyalkyl, acyloxyalkyl, acylaminoalkyl, haloalkyl, cyanoalkyl or the like; R2, to R5 are each H, linear or branched alkyl, cycloalkyl, linear or branched alkoxy, cycloalkyloxy or the like; X is H, halogen, alkoxy or OH; (a) is 1-4; (b) is 0-5; (c) is 0-14; 2a+b+c=16; M is a metal (oxide)], a cyclohexanone solvent of formula II (wherein R is H, alkyl, alkoxy or halogen), a binder resin component and a polymerization initiator.

    YELLOW TYPE COLOR TONER COMPOSITION
    94.
    发明专利
    YELLOW TYPE COLOR TONER COMPOSITION 失效

    公开(公告)号：JPH04247464A

    公开(公告)日：1992-09-03

    申请号：JP1196191

    申请日：1991-02-01

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KOSHIDA HITOSHI ,  AIDA ISAMU ,  TANAKA HIRONORI

    IPC: G03G9/09

    Abstract: PURPOSE:To obtain the color toner composition superior in melt mixability and stabilized in yellow image density obtained by repeated development and successive copying an improved in lightfastness by incororating a specified yellow type color dyestuff. CONSTITUTION:At least one of the yellow type color toner dyestuffs to be added is repesented by formula I in which each of X1-X3 is H, alkyl, or halogen. This dye is contained, preferably, in an amount of 0.1-10wt.%, thus permitting a negatively chargeable color toner to be obtained and this dye stuff to exhibit a lemon yellow color and to the used for forming an yellow toner alone or by mixing it with other dyestuff or dyestuffs.

    CYAN TYPE THERMAL SUBLIMATION TRANSFER DYE AND TRANSFER SHEET
    95.
    发明专利
    CYAN TYPE THERMAL SUBLIMATION TRANSFER DYE AND TRANSFER SHEET 失效

    公开(公告)号：JPH03197183A

    公开(公告)日：1991-08-28

    申请号：JP33660589

    申请日：1989-12-27

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OYAMA TSUKASA ,  SHIMOKAWA YASUSHI ,  AIDA ISAMU ,  KOSHIDA HITOSHI ,  TAKUMA HIROSUKE

    IPC: B41M5/385 ,  B41M5/388 ,  B41M5/39 ,  C09B53/00

    Abstract: PURPOSE:To obtain a dye satisfying the optimum condition as a sublimable dye having both of high sublimation speed and image stability after transfer by adding at least one or more kinds of a dye selected from a specific dye group. CONSTITUTION:A dye represented by general formula (I) is obtained by the oxidative bonding of substituted anilines and substituted phenols. Thermal transfer recording ink is prepared by mixing the dye with a proper resin and a proper solvent. By changing the energy applied to a thermal head at the time of thermal transfer, the sublimation transfer amount of the cyan dye represented by the general formula (I) can be controlled and, therefore, gradation recording is easy and this dye is suitable for full color recording. Further, since the dye is stable against heat, light, humidity and chemicals, it is not thermally decomposed during thermal recording and the preservability of obtained recording is also excellent. This dye is good in the solubility to an org. solvent and the dispersibility to water and high concn. ink having the dye uniformly dissolved or dispersed therein is easily prepared and recording having good color density can be obtained.

    SUBLIMATION TYPE THERMAL RECORDING DYE AND TRANSFER SHEET
    96.
    发明专利
    SUBLIMATION TYPE THERMAL RECORDING DYE AND TRANSFER SHEET 失效

    公开(公告)号：JPH03197090A

    公开(公告)日：1991-08-28

    申请号：JP33483789

    申请日：1989-12-26

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KARASAWA AKIO ,  KOSHIDA HITOSHI ,  AIDA ISAMU ,  TAKUMA HIROSUKE

    IPC: B41M5/385 ,  B41M5/388 ,  B41M5/39 ,  C09B55/00

    Abstract: PURPOSE:To obtain a sublimation type thermal transfer recording dye having good solubility and easy to sublime by using a compound represented by formula. CONSTITUTION:A sublimation type thermal recording dye is represented by formula [wherein R and R are a substituted or non-substituted alkyl group, an alkenyl group or a substituted or non-substituted aryl group and may be mutually bonded, R and R are respectively a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a substituted or non-substituted alkyl group or an alkoxy group, X is a substituted or non-substituted alkyl group, a cycloalkyl group or a substituted or non-substituted aryl group, Y is a substituted or non-substituted alkyl group, a cycloalkyl group, a substituted or non-substituted aryl group or an -OZ group (wherein Z is a substituted or non-substituted alkyl group, a cycloalkyl group, an alkenyl group or a substituted or non-substituted aryl group) and X and Y may be mutually bonded].

    YELLOW COLOR TONER COMPOSITION
    98.
    发明专利
    YELLOW COLOR TONER COMPOSITION 失效

    公开(公告)号：JPH01227162A

    公开(公告)日：1989-09-11

    申请号：JP5249788

    申请日：1988-03-08

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAKUMA HIROSUKE ,  OYAMA TSUKASA ,  AIDA ISAMU ,  MIKOTA TAMIO ,  KOSHIDA HITOSHI ,  IGATA AKITOSHI

    IPC: C09B1/58 ,  G03G9/09

    Abstract: PURPOSE:To improve the light resistance of an image and the compatibility of a toner and a resin and to prevent generation of fogging by incorporating a specific anthraquinone compd. into the above compsn. CONSTITUTION:The anthraquinone expressed by the formula I exhibits good performance as a yellow dye for a color toner. In the formula I, R1, R2, R3, and R4 respectively independently denote a hydrogen atom, halogen atom, alkyl group or alkoxy group. The image of a bright yellow color without having the fogging is obtd. and the light resistance thereof is improved when copying is executed by using such compsn.

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