Patents Assigned to Oji Yuka Goseishi Co., Ltd.
  • Patent number: 5680720
    Abstract: An illuminated sign board which comprises a film having printing, a frame, and a light source is described. The film is a semi-transparent film made of a stretched resin film containing a finely divided powder of a white inorganic material. The semi-transparent film satisfies the following requirements (1) to (4):(1) an opacity of from 40% to 70%;(2) a whiteness of from 80% to 100%;(3) a total light beam average reflectance of from 30 to 60%; and(4) a total light beam average transmittance of from 30% to 70%.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: October 28, 1997
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Harumitsu Asazuma, Hiroshi Koyama
  • Patent number: 5667872
    Abstract: A synthetic paper with a multi-layer structure comprising a biaxially stretched film of an olefinic polymer having a melting point (the peak temperature of the DSC curve) of from 130.degree. C. to 210.degree. C. containing from 5 to 40% by weight inorganic fine powders having a mean particle size of from 0.01 to 10 .mu.m as a base material layer (A) having adhered to at least one surface thereof a uniaxially stretched layer (B) having a surface roughness of from 0.3 to 1.5 .mu.m, with the uniaxially stretched layer (B) comprising a propylene .alpha.-olefin copolymer or a high-density polyethylene having a melting point (the peak temperature of the DSC curve) of from 120.degree. C. to 160.degree. C. which is at least 5.degree. C. lower than the melting point of the olefinic polymer of the base material layer (A) and from 8 to 65% by weight inorganic fine powders having a mean particle size of from 0.01 to 5 .mu.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: September 16, 1997
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Atsushi Ishige, Hiroshi Koyama, Koichi Asami
  • Patent number: 5496791
    Abstract: A thermal transfer image-receiving sheet comprising (1) a support comprising (a) a surface layer comprising a biaxially stretched film of a thermoplastic resin containing from 2 to 60% by weight of titanium dioxide fine powder and (b) a base layer comprising a biaxially stretched microporous film of a thermoplastic resin containing from 10 to 45% by weight of an inorganic fine powder and (2) an image-receiving layer provided on surface layer (a) of support (1), in which support (1) has a void volume of from 30 to 60% and a density of from 0.50 to 0.78 g/cm.sup.3, and surface layer (a) of support (1) has a center-line average roughness of not more than 0.5 .mu.m and a Bekk's smoothness of from 4,000 to 100,000 sec.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: March 5, 1996
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai, Ayako Shibata
  • Patent number: 5496790
    Abstract: A thermal transfer image-receiving sheet having (1) a support of (B) a base layer which is a biaxially stretched microporous film of a thermoplastic resin containing from 10 to 45% by weight of an inorganic fine powder and (A) a surface layer which is a biaxially stretched film of a thermoplastic resin having a three-dimensional center-plane average roughness (Ra) of not more than 0.5 .mu.m, surface layer (A) having a spatial average wavelength (.lambda.a), defined by the equation .lambda.a=2.pi.Ra/.DELTA.a, where Ra is the three-dimensional center-plane average roughness and S.DELTA.a is the three-dimensional average slope, of not more than 100 .mu.m and a gloss of not less than 93% as measured at 75.degree. according to JIS P-8142 and (2) an image-receiving layer provided on the surface of the surface layer (A). The image-receiving sheet provides a clear image having high density, high gloss, and reduced rough feeling even using reduced printing energy.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: March 5, 1996
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai
  • Patent number: 5494735
    Abstract: The invention provides composite synthetic paper comprising (A) plain weave fabric and (B) synthetic paper comprising a stretched resin film having an opacity of not less than 85%, a void volume of from 10 to 60%, and a thickness of from 30 to 500 .mu.m, with or without (C) opacifying layer interposed between (A) and (B), in which synthetic paper (B) may be composed of a biaxially stretched thermoplastic resin film as a base layer and a uniaxially stretched thermoplastic film containing 8 to 65% by weight of an inorganic fine powder as a paper-like layer. The composite synthetic paper is excellent in printability, tear resistance, waterproofness, sewability, and opacifying properties and useful as material for aprons, shop curtains, disposable clothing, maps, outdoor posters, signboards, hangers, flags, etc.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: February 27, 1996
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventor: Katsukuni Nitta
  • Patent number: 5489471
    Abstract: A white resin film having microvoids is disclosed, which is obtained by stretching a thermoplastic resin film comprising (a) from 40 to 65% by weight of a polypropylene resin, (b) from 1 to 20% by weight of ground calcium carbonate having a particle size of from 1 to 6 .mu.m and a specific surface area of from 10,000 to 34,800 cm.sup.2 /g, and (c) from 30 to 50% by weight of precipitated calcium carbonate having a particle size of not smaller than 0.5 .mu.m and a specific surface area of from 35,000 to 50,000 cm.sup.2 /g so as to have a void volume of from 20 to 70%. The film exhibits satisfactory printability in terms of whiteness and ink drying properties.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: February 6, 1996
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Masayuki Inoue, Mitsuo Nakajima
  • Patent number: 5474966
    Abstract: A thermal recording material comprising (1) a synthetic paper support having on one side thereof (2) a thermal color forming layer, the support comprising (B) a biaxially stretched resin film as a base layer having (A) a uniaxially stretched thermoplastic resin film containing from 1 to 8% by weight calcium carbonate powder as a calcium carbon powder containing layer on one side thereof, and (C) a uniaxially stretched thermoplastic resin film containing from 15 to 55% by weight inorganic fine powder as a back surface layer on the other side thereof, the thermal color forming layer being provided on the calcium carbon powder containing layer (A), in which (i) the support has an opacity of not more than 45% as measured according to JIS P-8138, (ii) the calcium carbon powder containing layer (A) has a Bekk's index of from 1,000 to 3,500 seconds and a center-line average roughness (Ra) of not more than 0.5 .mu.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: December 12, 1995
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Harumitsu Asazuma, Hiroshi Koyama
  • Patent number: 5462788
    Abstract: A thermoplastic resin film having excellent printability comprising (a) a support layer comprising a thermoplastic resin film and (b) a pigment coating layer provided on the front surface of said support layer or both the front surface and back surface of said support layer, wherein said thermoplastic resin film contains 1 to 30% by weight of petroleum resin.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: October 31, 1995
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Takashi Ohashi, Motoshi Hembo, Takatoshi Nishizawa, Isao Sunaga
  • Patent number: 5409754
    Abstract: An in-mold label with a coupon composed of a base layer having formed on the back side thereof an adhesive layer, in which said base layer comprises a biaxially stretched resin film, a part of the adhesive layer has a formation density of 50% or less to form a less adhesive zone, with at least one end of the less adhesive zone remaining non-adhesive to provide a stripping starting part having a width of from 5 to 10 mm measured from the end of the less adhesive zone to the direction of stripping and an area ratio of not more than 30% based on the total area of the less adhesive zone, the surface of the base layer corresponding to the less adhesive zone has printed thereon a coupon, and the periphery of the printed coupon is perforated. The in-mold label, after integrally molded with a resin container, suffers from no blister, and the coupon can easily be stripped off the container with fingers.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: April 25, 1995
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Jun-ichi Yasuda, Masaaki Yamanaka
  • Patent number: 5397637
    Abstract: A thermoplastic resin film having a coated layer thereon, the coating layer comprising a quaternary ammonium salt copolymer comprising (a) a structural unit represented by formula (I): ##STR1## wherein A represents --O-- or --NH--; R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents an alkylene group having from 2 to 4 carbon atoms or --CH.sub.2 CH(OH)--CH.sub.2 --; R.sup.3, R.sup.4, R.sup.5, and R.sup.6, which may be the same or different, each represents an alkyl group having from 1 to 3 carbon atoms; R.sup.7 represents an alkyl group having from 1 to 10 carbon atoms or an aralkyl group having from 7 to 10 carbon atoms; n represents an integer of from 1 to 3; and X represents a chlorine atom, a bromine atom or an iodine atom, (b) a structural unit represented by formula (II): ##STR2## wherein R.sup.8 represents a hydrogen atom or a methyl group; and R.sup.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: March 14, 1995
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Koichi Asami, Hironobu Amagai, Yukio Saitoh, Isao Itoh
  • Patent number: 5395667
    Abstract: An air baggage tag readable by a bar code reader is composed of a recording layer, a substrate, a pressure sensitive adhesive layer, and release paper, wherein the substrate has a laminate structure composed of (A.sup.1) a fine void-containing stretched thermoplastic resin film and (A.sup.2) a substantially void-free uniaxially stretched thermoplastic resin film having a transverse Elmendorf tear strength of at least 80 g, the thickness of the uniaxially stretched thermoplastic resin film (A.sup.2) is from 10 to 60% of the total thickness of the substrate, and the recording layer is provided on the side of the stretched thermoplastic resin film (A.sup.1) opposite to the stretched thermoplastic resin film (A.sup.2) and has printed thereon a bar code. The baggage tag has high tear strength while exhibiting satisfactory printability and therefore, when attached to each piece of air baggage, is not easily torn apart even on being pulled.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 7, 1995
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai
  • Patent number: 5332542
    Abstract: A process for producing a labeled hollow container comprising inserting a label having a multi-layer structure into a hollow mold and blow molding a molten parison of thermoplastic resin C in the mold is disclosed, in which the label is composed of a base layer comprising thermoplastic resin A having on one side thereof a heat-sealable resin layer comprising a mixture of at least lower-melting thermoplastic resin B and higher-melting themoplastic resin B' both having a melting point at least 20.degree. C. lower than that of the themoplastic resin A, the mixture of themoplastic resins B and B' satisfying relationships:5<T.sub.mc -T.sub.mB' <8015<T.sub.mB -T.sub.mB <50wherein T.sub.mc is a melting point of thermoplastic resin C constituting the parison; T.sub.mB, is a melting point of higher-melting thermoplastic resin B'; and T.sub.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: July 26, 1994
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Masaaki Yamanaka, Takashi Yamanobe
  • Patent number: 5318817
    Abstract: An air baggage tag readable by a bar code reader is composed of a recording layer, a substrate, a self-adhesive layer, and release paper, wherein the substrate has a laminate structure composed of (A.sup.1) a fine void-containing stretched thermoplastic resin film and (A.sup.2) a substantially void-free uniaxially stretched thermoplastic resin film having a transverse Elmendorf tear strength of at least 80 g, the thickness of the uniaxially stretched thermoplastic resin film (A.sup.2) is from 10 to 60% of the total thickness of the substrate, and the recording layer is provided on the side of the stretched thermoplastic resin film (A.sup.1) opposite to the stretched thermoplastic resin film (A.sup.2) and has printed thereon a bar code. The baggage tag has high tear strength while exhibiting satisfactory printability and therefore, when attached to each piece of air baggage, is not easily torn apart even on being pulled.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: June 7, 1994
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai
  • Patent number: 5306690
    Abstract: A thermal transfer recording sheet comprising a support having thereon a thermal transfer image-receiving layer, said support comprising a thermoplastic resin film containing from 3 to 60% by weight of a petroleum resin, where the thermoplastic resin film is preferably a microvoid-containing film, and the thermal transfer recording sheet exhibits excellent surface smoothness and, in case of a microvoid-containing support, also exhibits excellent cushioning properties so that the recording sheet has improved contact with a thermal head to provide a transferred image rich in gradation and which does not curl even after thermal recording.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: April 26, 1994
    Assignee: Oji Yuka Goseishi Co. Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai
  • Patent number: 5268349
    Abstract: A recording material comprising a thermosensitive recording layer (B) or a thermal dye transfer type image receiving layer (B') laminated on a surface layer (b) of a support (A), wherein the support (A) comprises the surface layer (b) comprising a uniaxially stretched thermoplastic resin film laminated onto a base layer (a), wherein the base layer (a) comprises a biaxially stretched film of a thermoplastic resin containing 10 to 45% by weight of an inorganic fine powder, and wherein said support (A) satisfies conditions (1) to (3):(1) the surface layer (b) of the support (A) comprises at least two layers: an outer layer (b.sup.1) comprising a uniaxially stretched film of a thermoplastic resin containing 0 to 30% by weight of an inorganic fine powder; and an inner layer (b.sup.2) comprising a uniaxially stretched film of a thermoplastic resin containing 30 to 80% by weight of an inorganic fine powder, wherein the thickness of the outer layer (b.sup.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: December 7, 1993
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Takatoshi Nishizawa, Akira Iwai
  • Patent number: 5254302
    Abstract: A method of preparing an in-mold label is described in which a resin film is embossed to form a gravure pattern having from 60 to 200 roll-formed lines per inch. The embossed film is stretched and then coated on its embossed pattern side with a heat-sensitive liquid resinous adhesive in an amount of from 1 to 10 g/m.sup.2 on a dry resin basis. The applied adhesive is then dried to form an adhesive layer on the film. The in-mold label obtained by the present invention is excellent in printing suitability including feeding properties and ink adhesion, has an advantage that die-cutting for producing the label can be conducted at a high efficiency, and is less apt to develop blisters even under a wide range of molding conditions when used in in-mold application.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: October 19, 1993
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventor: Masaaki Yamanaka
  • Patent number: 5233924
    Abstract: Pencil writable and printable synthetic paper comprising a finely porous polyolefin film layer having an opacity of at least 80% obtained by stretching a polyolefin film containing from 8 to 65% by weight of an inorganic fine powder having on one or both sides thereof a stretched ethylene-vinyl alcohol copolymer film layer, at least one of the stretched ethylene-vinyl alcohol copolymer film layers having a coat layer thereon. When printed, the stretched ethylene-vinyl alcohol copolymer film layer prevents hydrocarbon solvents present in printing inks from penetrating into the polyolefin film layer to eliminate local surface unevenness and curling.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: August 10, 1993
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Yozo Ohba, Akira Akimoto, Tokumi Chiba
  • Patent number: 5204188
    Abstract: A coated resin film having excellent offset printability is described, which comprises a polyolefin resin film base material layer having formed on both the surfaces thereof a solvent permeation preventing layer for preventing the permeation of a solvent in offset printing ink compositions and further having formed on one or both the surfaces of the solvent permeation preventing layers a coating agent layer.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: April 20, 1993
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Katsukuni Nitta, Nobuyuki Yamaguchi
  • Patent number: 5196391
    Abstract: A support for a dye transfer type thermosensitive printing sheet is disclosed, which comprises a porous film base having a biaxially stretched film of a thermoplastic resin containing an inorganic fine powder having adhered thereon a thermoplastic resin film having a centerline-average roughness of not more than 0.5 .mu.m as a surface layer on which a dye transfer type thermosensitive printing layer is to be provided, said surface layer having a thickness of from 0.3 to 1.5 .mu.m and a Bekk's smoothness of from 2500 to 7000 seconds, and said support having an opacity of not less than 70%, a density of not more than 0.91 g/cm.sup.3, and a compression ratio of from 15 to 35% under a stress of 32 kg/cm.sup.2. A dye transfer type thermosensitive printing sheet using the support of the invention has excellent surface smoothness and exhibits considerable compressibility and, therefore, shows improved adhesion or contact with a printing head to form an image rich in gradation.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: March 23, 1993
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Akira Iwai
  • Patent number: 5122413
    Abstract: A support for a thermosensitive recording material comprising a surface layer of a thermoplastic resin film having a center line average roughness of 0.6 .mu.m or less laminated on the surface of a porous film base material of a biaxially stretched film of a thermoplastic resin containing an inorganic fine powder, wherein the properties of said support meet the following conditions (a) to (c);(a) the thickness of the surface layer is from 0.3 to 2.0 .mu.m and the Bekk smoothness of the surface layer is from 1,000 to 8,000 seconds,(b) the opacity of the support is at least 70%, the density of the support is 0.91 g/cm.sup.3 or less, and the compression ratio of the support under a stress of 32 kg/cm.sup.2 is from 15 to 35%, and(c) the coefficient of thermal shrinkage at 120.degree. C. for 30 minutes is 2.5% or less in the longitudinal direction and is 2.0% or less in the width direction.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: June 16, 1992
    Assignee: Oji Yuka Goseishi Co., Ltd.
    Inventors: Akihiko Ohno, Akira Iwai