Patents Assigned to OJI Paper Co., Ltd.
  • Patent number: 7344764
    Abstract: There is provided a thermal transfer receiving sheet comprising a substrate, a barrier layer laminated on said substrate, and an image receiving layer laminated on said barrier layer, wherein said barrier layer and said image receiving layer are laminated on at least one side of said substrate, characterized in that the major components of said barrier layer are a swellable lamellar inorganic component and an adhesive, wherein said swellable lamellar inorganic component has a mean particle diameter of at least 0.1 ?m and not greater than 100 ?m, and an aspect ratio (ratio of mean particle diameter to thickness of the lamellar composite) of at least 100 and not greater than 5000.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: March 18, 2008
    Assignee: OJI Paper Co., Ltd.
    Inventors: Chikara Tsukada, Masato Kawamura, Hideaki Shinohara
  • Publication number: 20080057190
    Abstract: Ink jet recording sheet having excellent glossiness, ink absorptivity, image quality, and long-term preservability in which cracks generated on an ink receiving layer are significantly reduced. The ink jet recording sheet includes a supporting medium; and an ink receiving layer including an inorganic fine particle, a cationic polymer, and a binder, wherein an average primary particle size of the inorganic fine particle is 30 nm or less, and the cationic polymer including: at least one structural unit (a1) expressed by a following general formula (1) or (2): wherein m and n independently represents an integer of 0 to 4, and X represents an acid residue; and at least one structural unit (a2) expressed by a following general formula (3), (4), (5) or (6): wherein R1 to R8 independently represents a hydrogen atom or a C1-C4 alkyl group, and Y and Z independently represents an acid residue.
    Type: Application
    Filed: October 26, 2007
    Publication date: March 6, 2008
    Applicant: OJI Paper Co., LTD.
    Inventors: Mitsuru Kobayashi, Ikuko Furukawa, Hirotake Fujita, Tetsuo Tsuchida
  • Publication number: 20080050542
    Abstract: An ink jet recording material free of blotting when printed in dye ink and pigment ink, superior in print density and permitting clear printing of a high-definition image is disclosed. The ink jet recording material comprises a substrate at least one surface of which is treated with an ink fixing agent, the ink fixing agent being a cationic surfactant represented by the following general formula: where R is an alkyl group having 8 to 18 carbon atoms.
    Type: Application
    Filed: August 21, 2007
    Publication date: February 28, 2008
    Applicant: Oji Paper Co., Ltd.
    Inventors: Satoshi Matsuura, Kazuo Totani
  • Publication number: 20080044601
    Abstract: Ink jet printing paper capable of providing, by using a low permeability or a nonpermeable supporting sheet, a high surface glossiness and a high dot reproducibility of a silver halide photograph level, an excellent absorptivity of ink, and a high recording density, and preventing cockling by ink solvent, comprising the low permeability or the nonpermeable supporting sheet, at least one ink receiving layer coated on the supporting sheet, and a luster layer coated on the ink receiving layer, the ink receiving layer in contact with the luster layer comprising pigment, as a main component, having a specific surface area-based mode diameter of pore distribution of 100 nm or less and an average secondary particle size of 1.3 ?m or less, and the luster layer comprising pigment, as a main component, having an average primary particle size of 5 to 100 nm.
    Type: Application
    Filed: October 23, 2007
    Publication date: February 21, 2008
    Applicant: Oji Paper Co., Ltd.
    Inventors: Shinichi Asano, Motoko Hiraki, Tomomi Takahashi, Hiromasa Kondo, Takeshi Iida, Ryu Kitamura
  • Publication number: 20080038491
    Abstract: The present invention relates to a method for producing an ink jet recording sheet characterized by including: applying a coating liquid containing at least both a temperature-sensitive polymeric compound and a pigment the temperature-sensitive polymeric compound having a temperature region where hydrophobicity is exhibited and a temperature region where hydrophilicity is exhibited, the coating liquid becoming more viscous or gelating in the temperature region where hydrophilicity is exhibited, onto either an air-permeable support or at least one undercoating layer provided on an air-permeable support in the temperature region where hydrophobicity is exhibited, to form a coating layer of the coating liquid, bringing the temperature thereof to the temperature region where the temperature-sensitive polymeric compound exhibits hydrophilicity to increase the viscosity of the coating layer or gelate the coating layer, then applying a wetting liquid containing an ink fixing agent (and colloidal particles) onto the
    Type: Application
    Filed: September 8, 2005
    Publication date: February 14, 2008
    Applicant: OJI PAPER CO., LTD.
    Inventors: Kazuo Ikeda, Motoko Hiraki, Shinichi Asano, Tomoyuki Hisaoka, Nobuhisa Dano, Hiroyuki Nemoto
  • Publication number: 20080020196
    Abstract: The present invention provides a thermal transfer receiving sheet obtained by sequentially forming a hollow particle-containing intermediate layer and an image receiving layer on one surface of a sheet-like support mainly comprising cellulose pulp, wherein the moisture content of the entire thermal transfer receiving sheet is from 2 to 8 mass % and the moisture permeability of the entire receiving sheet is 400 g/m2·day or less; and a production method thereof. The present invention further provides a thermal transfer receiving sheet obtained by sequentially forming a hollow particle-containing intermediate layer and an image receiving layer on one surface of a sheet-like support mainly comprising cellulose pulp and providing a backside layer on another surface of the support, wherein the backside layer mainly comprises an acryl-based resin having a glass transition point (Tg) of 45° C.
    Type: Application
    Filed: July 7, 2005
    Publication date: January 24, 2008
    Applicant: OJI Paper Co., Ltd.
    Inventors: Toshikazu Onishi, Toru Nakai, Kazuyuki Tachibana, Kyoko Uchida, Yoshimasa Tanaka, Yoshihiro Shimizu, Hideaki Shinohara, Masato Kawamura, Chikara Tsukada
  • Publication number: 20080008896
    Abstract: The present invention provides a thermal transfer receiving sheet comprising a sheet-like support, an image receiving layer containing, as a main component, a dye-dyeable resin formed on one surface of the sheet-like support, and a back surface coating layer containing an adhesive resin formed on the other surface of the sheet-like support, wherein the back surface coating layer contains a polyvinyl pyrrolidone resin in an amount of 1 to 50% by weight based on the total solid content of the back surface coating layer.
    Type: Application
    Filed: January 20, 2006
    Publication date: January 10, 2008
    Applicant: Oji Paper Co., Ltd.
    Inventors: Hideaki Shinohara, Yoshihiro Shimizu, Yoshio Mizuhara, Mitsuru Tsunoda
  • Publication number: 20070296205
    Abstract: A concealing adhesive sheet and a concealing adhesive sheet having a release sheet, in which it is easy to write or print on information, the recycle property of paper such as a postcard can be ensured, and the temporary adhesiveness between a concealing sheet and transparent layer is stable, and a double sided adhesive sheet and a double sided adhesive sheet having the release sheet, in which it is easy to write or print on information, the recycle property of paper such as a postcard can be ensured, and the temporary adhesiveness between transparent layers is stable, are provided.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 27, 2007
    Applicants: OJI PAPER CO., LTD., OJI PACKAGING CO., LTD.
    Inventors: Katsumi MORONUKI, Natsuki TERASHIMA
  • Patent number: 7312177
    Abstract: A thermosensitive recording material comprising a substrate sheet and a thermosensitive colored image-forming layer formed on at least one surface of the substrate sheet and comprising at least one colorless or light-colored dye precursor and a color-developing agent reactive with the dye precursor upon heating to thereby develop a color, wherein the color-developing agent comprises at least one compound of the formula (I): (wherein R1 represents a member selected from the group consisting of unsubstituted aromatic hydrocarbon groups and substituted aromatic hydrocarbon groups with at least one substituent selected from the group consisting of a methyl group and a chlorine atom, and R2 represents a divalent organic group).
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: December 25, 2007
    Assignee: Oji Paper Co., Ltd.
    Inventors: Ayako Shirai, Yoshiyuki Takahashi
  • Publication number: 20070292801
    Abstract: A thermal transfer receiving sheet comprising a sheet-form substrate and a receiving layer having as a main component thereof a dye-dyeable resin formed on at least one side of said sheet-form substrate; wherein the receiving layer contains cellulose acetate butyrate and polyester resin having a number average molecular weight up to 10,000.
    Type: Application
    Filed: September 21, 2005
    Publication date: December 20, 2007
    Applicant: OJI PAPER CO. LTD.
    Inventors: Toshikazu Onishi, Kyoko Uchida, Kazuyuki Tachibana, Naoki Kubo
  • Patent number: 7303651
    Abstract: Ink jet printing paper capable of providing, by using a low permeablity or a nonpermeable supporting sheet, a high surface glossiness and a high dot reproducibility of a silver halide photograph level, an excellent absorptivity of ink, and a high recording density, and preventing cockling by ink solvent, comprising the low permeablity or the nonpermeable supporting sheet, at least one ink receiving layer coated on the supporting sheet, and a luster layer coated on the ink receiving layer, the ink receiving layer in contact with the luster layer comprising pigment, as a main component, having a specific surface area-based mode diameter of pore distribution of 100 nm or less and an average secondary particle size of 1.3 ?m or less, and the luster layer comprising pigment, as a main component, having an average primary particle size of 5 to 100 nm.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: December 4, 2007
    Assignee: Oji Paper Co., Ltd.
    Inventors: Shinichi Asano, Motoko Hiraki, Tomomi Takahashi, Hiromasa Kondo, Takeshi Iida, Ryu Kitamura
  • Publication number: 20070273972
    Abstract: A corrugated pattern forming sheet exhibiting excellent performance when being used as optical elements, such as an antireflector and a retardation plate is provided. A corrugated pattern forming sheet of the invention includes a resin layer, and a hard layer provided at least in a portion of an outer surface of the resin layer. The hard layer is made of a metal or a metallic compound. The hard layer has a wavelike corrugated pattern. The average pitch of the corrugated pattern is 1 ?m or less, and the average depth of the bottom of the corrugated pattern is 10% or more given an average pitch of 100%.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 29, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventor: Toshiki OKAYASU
  • Publication number: 20070270309
    Abstract: A heat-sensitive recording material has a support, and a heat-sensitive recording layer including at least a leuco dye, a developer and a binder. The heat-sensitive recording layer contains secondary particles with an average particle diameter of 30 to 900 nm formed by aggregation of primary particles of amorphous silica with a particle diameter of at least 3 nm and less than 30 nm, and optionally a basic pigment. A protective layer may be formed on the heat-sensitive recording layer.
    Type: Application
    Filed: December 13, 2005
    Publication date: November 22, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventors: Takeshi Iida, Takeshi Shikano
  • Publication number: 20070259175
    Abstract: The present invention relates to a sheet with at least one built-in IC chip, the sheet being scarcely influenced by a mechanical external force and being free from loss or damage of the IC chip, and relates to a tape with at least one built-in IC chip used for the sheet with at least one built-in IC chip. The tape with at least one built-in IC chip is characterized in that a part or all of the IC chip 10 is embedded in a recessed portion 20a formed on a tape body, and the tape body 20 includes: a first base material 21; an adhesive layer 22 laminated on the first base material and formed of an adhesive; and a second base material 23 laminated on the adhesive layer; the second base material 23 being removed from the recessed portion 20a and the periphery thereof, and the adhesive in the recessed portion 20a of the adhesive layer 22 being pushed to the periphery thereof, and the pushed adhesive filling in a gap between the periphery of the IC chip 10 and the second base material 23.
    Type: Application
    Filed: September 13, 2005
    Publication date: November 8, 2007
    Applicants: OJI PAPER CO., LTD., FEC CO., LTD., OJI SPECIALTY PAPER CO., LTD., TOPPAN FORMS CO., LTD.
    Inventors: Mitsuhiro Ayaki, Nobuo Kanda, Shiro Sugimura, Hideki Kobayashi, Tuyoshi Ozaki, Keitaro Tomita, Keiichi Utaka, Mitugi Saito
  • Publication number: 20070252887
    Abstract: A printing method for a thermal transfer receiving sheet in which an image is formed on an image transfer layer of the receiving sheet by superimposing the sheet onto a dye thermal transfer sheet and applying thereto heat from a thermal head of a thermal transfer printer; wherein, the thermal transfer printer has a thermal head and a platen roller in opposition thereto, and the following requirements (1) and (2) are satisfied simultaneously: (1) the ratio (L/R) of the length of the entire thermal transfer receiving sheet (L) to the radius (R) of the platen roller of the printer is 0.01 to 0.07; and, (2) after a thermal transfer image has been formed on the image receiving layer by the thermal head, the thermal transfer receiving sheet is transported by the back side thereof being wound onto the surface of the platen roller, and the winding angle is 2 to 25°.
    Type: Application
    Filed: June 14, 2005
    Publication date: November 1, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventors: Yoshio Mizuhara, Yoshimasa Tanaka, Kazuyuki Tachibana, Yoshihiro Shimizu, Hideaki Shinohara
  • Publication number: 20070203023
    Abstract: A thermal recording sheet comprising, on one surface of square, transparent film, a thermal recording layer containing leuco dye and a coloration agent and a protection layer mainly containing water-based resin, wherein corner parts (1a, 1b, 1c, 1d) including at least one marked corner part (1a) are provided at its four corners. The corner parts (1a, 1b, 1c, 1d) respectively have end edges each with radius of curvature of at least 5 mm, and the end edge of the marked corner part (1a) is provided substantially with a maximum radius of curvature or a minimum radius of curvature.
    Type: Application
    Filed: October 15, 2004
    Publication date: August 30, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventors: Yumi Hada, Hiroyuki Kido, Masaharu Nojima
  • Publication number: 20070191226
    Abstract: (1) A 4-hydroxy-4?-isopropoxydiphenylsulfone developer dispersion characterized by being obtained by wet grinding a 4-hydroxy-4?-isopropoxydiphenylsulfone developer in the presence of at least one compound selected from the group consisting of 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane and 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, or in the presence of 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid; (2) a method for wet grinding a 4-hydroxy-4?-isopropoxydiphenylsulfone developer, characterized by wet grinding a 4-hydroxy-4?-isopropoxydiphenylsulfone developer in the presence of at least one compound selected from the group consisting of 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane and 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, or in the presence of 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanuric acid; and (3) a heat-sensitive recording material having a heat-sensitive recording layer containing the developer dispe
    Type: Application
    Filed: March 15, 2005
    Publication date: August 16, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventor: Yoshimi Ishibashi
  • Patent number: 7255918
    Abstract: A coated paper sheet provided with a coating layer formed on a paper sheet substrate and containing a pigment and a binder and optionally a pre-coated polyacrylamide-containing anionic acrylic resin layer formed between the substrate and coating layer, and having a 75° specular gloss of 70% or more, an air permeability of 4000 seconds or less, a Clark stiffness, in terms of critical strength L, of 12 cm or more in a cross direction and an internal bond strength of 200 mJ or more, exhibits high resistance to blistering, excellent printer-passing property, and high quality image-recording property and useful for both of offset printing and electrophotographic duplicating or printing.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: August 14, 2007
    Assignee: Oji Paper Co., Ltd.
    Inventors: Harumi Watanabe, Atsushi Myojo, Hiroyuki Wakasa, Osamu Kitao
  • Publication number: 20070111888
    Abstract: The present invention relates to a heat-sensitive recording material having a high recording sensitivity, which is capable of providing excellent image quality even when recording is carried out at low energy, and causes reduced coating defects. The invention provides a heat-sensitive recording material obtained by forming, on a paper support, an undercoat layer and then a heat-sensitive recording layer, characterized in that: 1) the undercoat layer has at least two undercoat layers including a first undercoat layer and a second undercoat layer; and 2) the heat-sensitive recording layer has a thickness standard deviation of 0.30 or less, and also provides a method for producing the heat-sensitive recording material.
    Type: Application
    Filed: January 11, 2007
    Publication date: May 17, 2007
    Applicant: OJI PAPER CO., LTD.
    Inventors: Hisayoshi Mito, Takeshi Shikano, Keiichi Inubushi
  • Publication number: 20070088302
    Abstract: The present invention provides a disposable diaper including an absorber, a top sheet, a back sheet, and a skin contact sheet (SCS) disposed above the top sheet. The skin contact sheet is formed with a stool passing opening and a urine passing opening at a portion corresponding to a crotch part, and includes an SCS central region formed by extending a strip-shaped inter-opening region, which is sandwiched by the two openings and extends in the width direction, by half the length between the openings in the anterior direction and in the posterior direction; an SCS ventral region located at the ventral side from the SCS central region; and an SCS dorsal region located at the dorsal side from the SCS central region. A least the SCS central region has the stretching force in the width direction, and an inter-opening central region sandwiched by the two openings includes a non-stretchable region.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 19, 2007
    Applicants: Oji Nepia Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Katsuhiko Sugiyama, Tomotsugu Miyoshi, Izumi Tashiro