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    INK RIBBON SUBSTRATE
    1.
    发明专利
    INK RIBBON SUBSTRATE 未知

    公开(公告)号：CA2107338C

    公开(公告)日：1998-12-15

    申请号：CA2107338

    申请日：1993-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： HIROE NOBUTAKE ,  KATO TETSUYA

    IPC: B41J31/04

    Abstract: The present invention relates to a base fabric for an ink ribbon having excellent durability of the welded part of an ink ribbon used an impact printer. Practically, it is characterized by a constitution wherein at least one yarn of the warp and the weft constituting the base fabric is constituted of a core/sheath-type composite yarn wherein the core is a polyamide polymer and the sheath is a polyamide polymer with a melting point being lower than that of said polyamide polymer.

    2.
    发明专利
    未知

    公开(公告)号：DE69307629T2

    公开(公告)日：1997-06-12

    申请号：DE69307629

    申请日：1993-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： HIROE NOBUTAKE ,  KATO TETSUYA

    IPC: B41J31/04

    Abstract: A substrate of an ink ribbon to be used in an impart printer wherein the fused part of the ribbon has excellent durability. The substrate is characterized in that at least either the warp or the weft is a core/sheath type composite yarn composed of a core made from a polyamide and a sheath made from another polyamide having a melting point lower than that of the former.

    6.
    发明专利
    未知

    公开(公告)号：DE69307629D1

    公开(公告)日：1997-03-06

    申请号：DE69307629

    申请日：1993-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： HIROE NOBUTAKE ,  KATO TETSUYA

    IPC: B41J31/04

    Abstract: A substrate of an ink ribbon to be used in an impart printer wherein the fused part of the ribbon has excellent durability. The substrate is characterized in that at least either the warp or the weft is a core/sheath type composite yarn composed of a core made from a polyamide and a sheath made from another polyamide having a melting point lower than that of the former.

    Ink Ribbon Substrate
    7.
    发明专利
    Ink Ribbon Substrate 未知

    公开(公告)号：CA2107338A1

    公开(公告)日：1993-08-14

    申请号：CA2107338

    申请日：1993-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： HIROE NOBUTAKE ,  KATO TETSUYA

    IPC: B41J31/04

    Abstract: A substrate of an ink ribbon to be used in an impart printer wherein the fused part of the ribbon has excellent durability. The substrate is characterized in that at least either the warp or the weft is a core/sheath type composite yarn composed of a core made from a polyamide and a sheath made from another polyamide having a melting point lower than that of the former.

    8.
    发明专利
    未知

    公开(公告)号：DE2039105A1

    公开(公告)日：1972-02-17

    申请号：DE2039105

    申请日：1970-08-06

    Applicant: TORAY INDUSTRIES

    Inventor： KATO TETSUYA ,  HIDAKA TOSHIAKI ,  OKAGAWA CHIKATSU

    IPC: C08L77/00 ,  D01D5/24 ,  D01D5/247 ,  D01F1/10 ,  D01F6/60

    Abstract: 1300467 Cellular Polyamide fibres TORAY INDUSTRIES Inc 1 Aug 1970 37266/70 Heading B5B [Also in Division C3] Cellular polyamide fibres are produced from a dispersion of a thermally stable polyalkylene ether modifier having a molecular weight of 600 to 60,000 in a polyamide, the dispersion containing between 0À2 and 3À5 millimole alkylene oxide units per gram of polyamide, by converting the dispersion into pellets, melt spinning the pellets into filaments, drawing the filaments until they have a predetermined orientation and extracting the modifier to produce filaments having 0À5 to 13% by volume of voids. The modifier is present in the pellets as particles, the average axial diameter of at least 50% of them being below 20Á. The birefringence of the filaments should be not less than (49 log 10 (8a+8)-32) Î 10 -3 where a is the millimoles of alkylene oxide units per gram of polyamide. The modifier may be a reaction product of a polyalkylene oxide such as polyethylene oxide or polypropylene oxide, with a polyamide monomer, such as a lactam, or oligomer. The modifier may also be a phosphoric acid ester, or a metal salt thereof, of a polyalkylene ether having at least one hydroxy radical. The modifier may be introduced into the polyamide by dissolving it in the polyamide monomer solution or mixing it with the monomer, and then polymerizing the monomer. The modifier may be removed from the filaments after spinning by dissolving it out with water or an organic solvent, such as a mixture of methanol and benzene, which does not dissolve the polyamide. The lustre of the fibre may be improved by addition of fine white particles whose maximum diameter is less than 10Á, the quantity of which is given by the formula where C is the quantity in per cent by weight and d is the difference between the refractive indeces of the polyamide and the particles. Suitable particulate materials are talc, CaCO 3 , titanium oxide and kaolinite. The fibres produced should have a ratio of strength of scattered light (I/I 0 ) as herein defined of from 1À5 to 15 and a lustre factor, also as herein defined, of from 20 to 90.

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