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    FILM FOR THERMAL TRANSFER RIBBON AND THERMAL TRANSFER RIBBON
    58.
    发明专利
    FILM FOR THERMAL TRANSFER RIBBON AND THERMAL TRANSFER RIBBON 失效

    公开(公告)号：JP2000218949A

    公开(公告)日：2000-08-08

    申请号：JP2135099

    申请日：1999-01-29

    Applicant: TORAY INDUSTRIES

    Inventor： KAWADA TERUHISA ,  HIRAOKA TOSHIHIKO ,  SUMIYA TAKASHI

    IPC: B32B27/36 ,  B41M5/382 ,  B41M5/40 ,  B41M5/41 ,  B41M5/38

    Abstract: PROBLEM TO BE SOLVED: To provide a film for a thermal transfer ribbon having excellent processability, gradability and printability and the thermal transfer ribbon. SOLUTION: The film for a thermal transfer ribbon comprises a biaxially oriented polyester film as a base material layer. In this case, a static frictional coefficient when a front surface and a rear surface of the layer are superposed and a frictional coefficient is measured falls within a range of 0.10 to 0.50. A distribution of a winding hardness measured from a front layer side of a winding roll toward a winding core side when the film is wound on a core is in a range of 93 degrees to less than 96 degrees, and a winding hardness of the winding core of the roll is 96 degrees or above. In the ribbon, an ink layer is provided on one side surface of such thermal transfer biaxially oriented polyester film.

    POLYESTER BIAXIALLY STRETCHED FILM
    59.
    发明专利
    POLYESTER BIAXIALLY STRETCHED FILM 失效

    公开(公告)号：JP2000141573A

    公开(公告)日：2000-05-23

    申请号：JP32641098

    申请日：1998-11-17

    Applicant: TORAY INDUSTRIES

    Inventor： SUMIYA TAKASHI ,  KATAOKA NORIYASU ,  MATSUNAGA ATSUSHI

    IPC: B32B27/20 ,  B29C55/12 ,  B29K67/00 ,  B29K105/24 ,  B29L9/00 ,  B32B27/36 ,  C08L67/02

    Abstract: PROBLEM TO BE SOLVED: To provide a composite film capable of using a polyester resin once used in extrusion as a raw material of good quality of a film without disusing and burning the same as industrial waste to sufficiently subject the recovered raw material to practical use. SOLUTION: A composite film has at least two layers of a layer A containing N1 foreign matters with a long diameter of 100 μm or more and a layer B containing N2 foreign matters with a long diameter of 100 μm or more and satisfies formula (l); N1>3 pieces/m2 and formula (2); N1-N2>=3 pieces/m2. The surface roughness ARa of the layer A and the surface roughness BRa of the layer B pref. satisfy formula (3); ARa>BRa and formula (4); ARa>20 nm.

    FILM FOR HIGHLY SENSITIVE HEAT-SENSITIVE STENCIL PRINTING ORIGINAL PAPER
    60.
    发明专利
    FILM FOR HIGHLY SENSITIVE HEAT-SENSITIVE STENCIL PRINTING ORIGINAL PAPER 失效

    公开(公告)号：JPH11321150A

    公开(公告)日：1999-11-24

    申请号：JP15360098

    申请日：1998-05-18

    Applicant: TORAY INDUSTRIES

    Inventor： HIRAOKA TOSHIHIKO ,  HASEGAWA MASAHIRO ,  SUMIYA TAKASHI

    IPC: B41N1/24 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00

    Abstract: PROBLEM TO BE SOLVED: To stably provide a heat-sensitive stencil printing original paper of a high sensitivity, wherein both of a character printing and a solid printing are clear, the gradient is high, there is no printing unevenness, and also, the plate-making period of time can be shortened, and a printing of which the dot density is higher can be performed. SOLUTION: This film is a biaxially oriented polyester film having a thickness of 0.5-4 μm, and satisfies [S(Tmax)-Y(Tmax)]+[S(Tmas+30)-Y(Tmax+30)]+[S(Tmax+60)-Y(Tmax+60)]>0. In this case, Tmax[ deg.C] is a temperature which indicates a maximum value of the heat shrinkage stress of the film, S(T) [g/mm ] is a heat shrinkage stress at a temperature T[ deg.C], and Y(T) [kg/mm ] is a tensile elastic modulus of the film at the temperature T[ deg.C].

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