公开(公告)号：JPH11321135A

公开(公告)日：1999-11-24

申请号：JP15359898

申请日：1998-05-18

Applicant: TORAY INDUSTRIES

Inventor： HIRAOKA TOSHIHIKO ,  KAWADA TERUHISA ,  SUMIYA TAKASHI

IPC: B41J31/00 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B41M5/382 ,  B41M5/40 ,  B41M5/41

Abstract: PROBLEM TO BE SOLVED: To simultaneously achieve both of prevention of generation of wrinkles on the ribbon and improvement of the picture quality and the gradient of a printed image even when the energy of a thermal head is increased, or a large- sized color printing is required. SOLUTION: This polyester film for thermal transfer printer ribbon is a biaxially oriented polyester film having a thickness of 1.5-13 μm, and the film simultaneously satisfies conditions of (1) the tensile elastic modulus both in the longitudinal and lateral directions is 4.5 GPa or higher, (2) there is a point wherein the gradient of the temperature dimension change curve in the longitudinal and lateral directions changes from negative to positive, and a temperature at the point is 220 deg.C or higher, and also, the dimensional change rates to the original length of the film at the point are -6-0% in the longitudinal direction, and -3-+3% in the lateral direction.

公开(公告)号：JPH11269284A

公开(公告)日：1999-10-05

申请号：JP37203198

申请日：1998-12-28

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  KINOSHITA SHUICHI ,  TOYAMA KATSUHIRO

IPC: G02B5/22 ,  B29C55/12 ,  B29C55/16 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  B32B27/36 ,  C03C17/32 ,  C08J5/18

Abstract: PROBLEM TO BE SOLVED: To provide a polyester film, most suitable for use in a surface cover of plasma display that can exhibit the excellent function of absorbing near infrared rays without any damage to the clarity of image on plasma display. SOLUTION: A polyester film has a hansmittance of all light rays of not less than 70%, an absorptivity in a wavelength region of 800-1,000 nm of not less than 60% and the number of flaws having a length of not less than 5mm and a depth of not less than 1.5 μm of not more than 3/m . The member of flaws having a length of not less than 5 mm and a depth of not less than 1.5 μm and extending angularly within ±45 deg. with respect to the width direction of the film is, preferably, not more than 1 /m .

公开(公告)号：JPH11188970A

公开(公告)日：1999-07-13

申请号：JP35894797

申请日：1997-12-26

Applicant: TORAY INDUSTRIES

Inventor： HASHIBA YOSHIJI ,  MIMURA TAKASHI ,  SUMIYA TAKASHI

IPC: B41M5/382 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  B32B27/36 ,  B41M5/40 ,  B41M5/50 ,  B41M5/52

Abstract: PROBLEM TO BE SOLVED: To provide a polyester film wherein an image of high quality can be formed and image reception sheets can be obtained by preventing the trouble of sending a plurality of the image reception sheets at a time. SOLUTION: In the biaxially stretched polyester film wherein a thermal transfer image reception layer is provided on at least one of the sides of the film, the average roughness Ra1 of the center line of a surface of the poyester film where a thermal transfer image reception layer is provided and the average roughness Ra2 of the center line on the opposite side of the film satisfy the following equations: equation I Ra1 -10 Ω/(square).

公开(公告)号：JPH1170757A

公开(公告)日：1999-03-16

申请号：JP24945597

申请日：1997-08-29

Applicant: TORAY INDUSTRIES

Inventor： HIRAOKA TOSHIHIKO ,  HASEGAWA MASAHIRO ,  SUMIYA TAKASHI

IPC: B41N1/24 ,  B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  C08J5/18

Abstract: PROBLEM TO BE SOLVED: To provide a film for base paper for heat-sensitive stencil printing which enables the remarkable improvement of sensitivity and resolution and also the clear makeup and printing of a character and a solid print form. SOLUTION: This film is composed of a biaxially oriented polyester film and has a film thickness (d) range of 0.3-3 μm. In addition, the surface of the film meets formula: SRma/d =30. In the formula, SRma is the maximum height [μm] of a three-dimensional surface, d is a film thickness [μm], and SSr is the area percentage % of a center face.

公开(公告)号：JPH1120326A

公开(公告)日：1999-01-26

申请号：JP18745097

申请日：1997-06-27

Applicant: TORAY INDUSTRIES

Inventor： TOYAMA KATSUHIRO ,  SUMIYA TAKASHI

IPC: B41M5/382 ,  B32B27/36 ,  B41M5/40 ,  B41M5/50 ,  B41M5/52

Abstract: PROBLEM TO BE SOLVED: To suppress the glare of a surface, and also, provide a full color hard copy of a high image quality without a dot void and a dot missing of an ink by a method wherein the surface roughness of a biaxially drawn polyester film on one surface of which a heat-sensitive transfer image receiving layer is provided, is transferred onto the heat-sensitive transfer image receiving layer. SOLUTION: For the constitution of this heat-sensitive transfer image receiving sheet, e.g. on one surface of a biaxially drawn polyester film 1 as a supporting body, a heat-sensitive transfer image receiving layer 2 is provided, and the surface roughness of a rear surface II of the film 1, is transferred to a face surface I of the image receiving layer 2. Also, the biaxially drawn polyester film which becomes the supporting body, is a fine air bubble-containing polyester film of which the density is 0.5 g/cm or higher, and 1.3 g/cm or lower. Also, for the resin of the heat-sensitive transfer image receiving layer, the glass transition point Tg stays in a range of 160 deg.C>=Tg>=-10 deg.C. This is for facilitating the transfer of the surface roughness of the biaxially drawn polyester film surface II, by being a resin which is easy to deform.

公开(公告)号：JPH1024543A

公开(公告)日：1998-01-27

申请号：JP7884997

申请日：1997-03-12

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  HORIUCHI SATORU ,  YAMAMOTO KENJI

IPC: B32B27/36 ,  B29C55/02 ,  B29K67/00 ,  B29L7/00 ,  H05K1/03 ,  H05K3/28

Abstract: PROBLEM TO BE SOLVED: To obtain durability at high temperature and in high humidity and easy sliding, easy adhesion, and antistatic properties by a method in which at least on one side of a polyester resin, another polyester resin having smaller melting energy than the resin is laminated, and a water-soluble or a water- dispersing resin not containing inactive particles is laminated on the latter polyester resin. SOLUTION: At least on one side of a polyester resin A, a polyester resin B having smaller melting energy than the resin A is laminated, and a water-soluble or water-dispersing resin not containing inactive particles is laminated on the resin B. Polyethylene terephthalate is named as the resin A, and a resin which is obtained by a method in which a 100:0-60:40 mole % mixture of terephthalic acid and isophthalic acid is used as an acid component, a 100:0-60:40 mole % mixture of ethylene glycol and cyclohexane dimethanol is used as an alcohol component, and the mixtures are co-polycondensed is used as the resin B. The water-soluble or water-dispersing resin has functions including easy adhesion, antistatic, easy sliding, and mold releasing properties.

公开(公告)号：JPH1016166A

公开(公告)日：1998-01-20

申请号：JP7884897

申请日：1997-03-12

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  HORIUCHI SATORU ,  YAMAMOTO KENJI

IPC: B32B7/02 ,  B29C55/02 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  B32B27/36 ,  H05K1/03 ,  H05K3/28

Abstract: PROBLEM TO BE SOLVED: To provide a polyester film of easy lubricating properties, easy bonding properties and antistatic properties and also provided with durability under the high temperature and high humidity conditions. SOLUTION: Polyester resin B and a water-soluble and/or water-dispersible resin are laminated successively on one face of polyester resin A in a composite film, and the relation of melting energy ΔHA of resin A with melting energy ΔHB of resin B is ΔHA>ΔHB, and water-dispersible and/or water-soluble polyester containing inactive particles is not a main component in the water-soluble and/or water-dispersible resin.

公开(公告)号：JPH0957928A

公开(公告)日：1997-03-04

申请号：JP23602595

申请日：1995-08-21

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  KUBOTA KOICHI ,  TAGANO KIKUO

IPC: B32B27/18 ,  B32B27/20 ,  B32B27/36 ,  C08K3/20 ,  C08L67/00 ,  C08L67/02 ,  C09D5/23 ,  C09D7/12 ,  G11B5/73 ,  G11B5/733 ,  G11B5/80

Abstract: PROBLEM TO BE SOLVED: To provide a white film which can satisfy various characteristics required for a magnetic recording medium such as a magnetic recording card with good balance. SOLUTION: A film which has a laminated structure with at least two layers and consists of polyester resins contg. titanium oxide particles and satisfies conditions (1)-(6) is provided; (1) the content of titanium oxide particles in each layer is 6-35wt.%., (2) the differences in intrinsic viscosities between layers are at most 0.3, (3) the surface roughness Ra of at least one face is 0.005-0.3μm, (4) the tear strength is at least 300g/mm, (5) the whiteness is at least 85% (in terms of thickness of 188μm) and (6) the optical density (in terms of thickness of 188μm) is at least 1.

公开(公告)号：JPH0957926A

公开(公告)日：1997-03-04

申请号：JP23602395

申请日：1995-08-21

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  KUROME TAIICHI ,  TAGANO KIKUO

IPC: C09D5/23 ,  B05D7/04 ,  B05D7/24 ,  B29C55/12 ,  B29K67/00 ,  B29K105/16 ,  B29L7/00 ,  B29L9/00 ,  B32B27/04 ,  B32B27/18 ,  B32B27/20 ,  B32B27/36 ,  C08J7/04 ,  C08K3/20 ,  C08L67/00 ,  C09D7/12 ,  G11B5/65 ,  G11B5/702 ,  G11B5/73 ,  G11B5/733 ,  G11B7/24 ,  G11B7/253

Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive white film which can satisfy various characteristics required for a magnetic recording medium such as a magnetic recording card and an optical recording medium such as a recording card with good balance. SOLUTION: A film which has a laminated structure with at least two layers wherein a sublayer with a thickness of at least 1μm is provided on at least one face of a main layer and consists of polyester resins contg. titanium oxide particles and satisfies conditions (1)-(5) is provided; (1) the content of titanium oxide particles in the main layer is 6-35wt.%., (2) the content of titanium oxide particles in the sublayer is less than the content in the main layer, (3) the surface roughness Ra of the sublayer is 0.005-0.25μm, (4) whiteness is at least 85% (in terms of thickness of 188μm, and (5) the optical density (in terms of thickness of 188μm) is at least 1.

公开(公告)号：JPH08169964A

公开(公告)日：1996-07-02

申请号：JP33421094

申请日：1994-12-16

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  SHIBATSUJI KUNIO ,  SUGIURA SEIYA ,  OE WATARU

IPC: C08J5/18 ,  B32B15/08 ,  B32B15/09 ,  B32B27/20 ,  C08G63/12 ,  C08K3/22 ,  C08L67/00

Abstract: PURPOSE: To obtain a film excellent in process stability as well as white light- shielding properties and the most suitable for use where it is fusion-bonded to a metallic sheet and then molded. CONSTITUTION: This film is made of a polyester resin containing 10-30wt.% white pigment and having a void content of 4-20%, a melting peak temperature of 150-245 deg.C, an oligomer content of 3wt.% or below and a degree of orientation of 0.7-4.0.