Abstract: In the present invention, a robot control device comprises: a search point calculation unit that calculates the position of a search point on the basis of at least one teaching point; and a command unit that drives a robot such that the position of the robot corresponds to the search point. The robot control device comprises a teaching point setting unit that sets the positions of the teaching points on the basis of a working position detected by a laser sensor. The robot control device sets the positions of a plurality of teaching points arranged along a work line by repeating: the calculation of the position of the search point by the search point calculation unit; the driving of the robot by the command unit; and the setting of the positions of the teaching points by the teaching point setting unit.

Abstract: A robot control device is provided with a camera which images a teaching tool which includes a characteristic area, and a characteristic position detection unit which detects the position of the characteristic area. The robot control device includes a movement instruction generating unit which, when an operator has moved the teaching tool, changes the position and orientation of the robot such that the camera follows the characteristic area. The robot control device includes a calculation unit which, on the basis of the position of the characteristic area, calculates the position and orientation of an auxiliary coordinate system set for the teaching tool. The robot control device includes a setting unit which, on the basis of the position and orientation of the auxiliary coordinate system, sets the position of the teaching point and the orientation of the robot at the teaching point.

Abstract: Disclosed herein is a polyethylene naphthalate multilayered film for a high density magnetic recording medium comprising:a polyethylene naphthalate layer (A), anda polyethylene naphthalate layer (B) laminated on at least one surface of said polyethylene naphthalate layer (A) and having a thickness of not more than 2 .mu.m and specific surface characteristics,the multilayered film having Young's modulus of not less than 700 kg/mm.sup.2 in machine and transverse directions.

Abstract: A laminated polyester film for a magnetic tape, which film comprises a layer of a crystalline polyester (A) and a layer of a polyester (B) which is laminated on at least one surface of the layer of the polyester (A) and has a melting point lower than that of the polyester (A), and which film has a Young's modulus of at least 600 kg/mm.sup.2 in both longitudinal and transverse directions, which film is suitable as a base film of a video tape.

Abstract: A polyester film prepared through a lamination of at least two layers by coextrusion, wherein one of exposed surfaces (surface A) has a center line average roughness of from 0.002 to 0.015 .mu.m, a polyester layer forming the other of the exposed surfaces (surface B) has a lower melting point than a polyester forming the surface A, and the surface B has a degree of planar orientation of not larger than 0.100, which can be used as a base film for magnetic recording tape having no back coating.

Abstract: A multilayered polyester film for high-density magnetic discs, comprising a layer of polyester (A) and a layer of polyester (B) having a thickness of not more than 3 .mu.m, being laminated on at least one side of the layer of polyester (A) and having specific surface characteristics.

Abstract: The present invention relates to a process for producing a biaxially oriented polyester film. The process is carried out using the following steps: (a) stretching an amorphous film substantially comprising polyethylene terephthalate 1.2 to 4.0 times in the machine direction by single-stage or multi-stage process to obtain a film having an index of birefringence of 1.times.10.sup.-3 to 2.5.times.10.sup.-2 ; (b) stretching the thus obtained film 1.1 to 3.5 times in the machine direction by single-stage or multi-stage process of 3.0.times.10.sup.-2 to 8.0.times.10.sup.-2 without cooling the film to the glass transition temperature thereof or below; (c) cooling the thus obtained film to the glass transition temperature thereof or below; (d) heating the thus obtained film to the glass transition temperature or higher and stretching the film in the machine direction by a single-stage or multi-stage process at a stretching ratio which brings the overall stretching ratio of 4.0 to 9.

Abstract: A biaxially oriented polyester film simultaneously satisfying the following formulas (I) to (III):.vertline.S.sub.180 -S.sub.120 .vertline..ltoreq.54 (I)T.sub.S.sup.MD .gtoreq.100 (II)Q.sub.120 .ltoreq.0.7 (III)wherein S.sub.180 is shrinking stress (g/mm.sup.2) of the film in the machine direction at 180.degree. C., S.sub.120 is shrinking stress (g/mm.sup.2) of the film in the machine direction at 120.degree. C., T.sub.S.sup.MD is shrinkage initiation temperature (.degree.C.) of the film in the machine direction, and Q.sub.120 is shrinkage (%) of the film in the machine direction after 5 hours' treatment at 120.degree. C., is described. The film has a good dimensional stability due to its low shrinkage, particularly in the machine direction, and substantially free from defect such as wave and wrinkle.It is prepared by biaxially stretching, heat-setting and relaxing an extruded polyester film under particular conditions so as to obtain a biaxially oriented polyester film having these characteristics.

Abstract: A shrinkable copolyester film having shrinkage of not less than 30% in the direction (main shrink direction) of either the machine direction or the transverse direction after 5 min treatment in an air oven at 100.degree. C., a shrinkage of not more than 20% in the other direction perpendicular to the main shrink direction after 5 min treatment in an air oven at 100.degree. C., an initial shrinkage stress (F.sub.0) of not more than 2000 g/mm.sup.2 in the main shrink direction during the course of 5 sec after dipped in a silicone oil of 75.degree. C., a shrinkage stress (F.sub.20) of not less than (F.sub.0 -100) g/mm.sup.2, after 20 sec dipping in a silicone oil at 75.degree. C., and a glass transition temperature of 35.degree. to 65.degree. C., is disclosed. The shrinkable copolyester film of the present invention is excellent in shrinkage properties, i.e., substantially free from wrinkles, distortion of film and uneven shrinkage, and is suitable for a shrinkable label for a PET bottle, etc.

Abstract: A polyester film suitable for a base of high density magnetic recording medium containing barium ferrite as a magnetic material characterized in that the centerline average roughness (Ra) is not more than 0.025 .mu.m and the F.sub.5 value in the longitudinal direction is not less than 14 kg/mm.sup.2 is disclosed wherein the polyester film exhibit excellent better durability when used with barium ferrite as a magnetic material.

Abstract: Disclosed herein is a polyester film containing specific fine spherical silica particles. The film of the present invention is especially suitable as a base film for a magnetic recording medium or dielectric for a capacitor. The films of the present invention have the markedly improved properties such as surface properties, electromagnetic properties, electrical properties, etc. due to the excellent dispersibliity of the particles in the film.

Abstract: A shrinkable polyester film having a sufficient shrinkage, a sufficient resistance to solvent for printing ink, a shrinking property not to cause wrinkles, a warm water resistance sufficient for preventing wrinkles, slack and whitening is disclosed herein.The shrinkable polyester film of the present invention may be used as labels for various vessels such as glass bottle, heat-resistant PET bottle and non heat-resistant PET bottle.

Abstract: A biaxially stretched polyester film which satisfies the following equations (1) to (4):0.155 . .ltoreq..DELTA.P .ltoreq.0.180 (1)1.6050 ..ltoreq.n..ltoreq.1.6085 (2)n .gtoreq.1.622-(0.1.times..DELTA.P) (3).sup..alpha. MD+TD ..ltoreq.3.0 (4)wherein .DELTA.P, n and .sup..alpha. MD+TD respectively respect the degree of surface orientation, the average refractive index and the sum (%) of the shrinkage in the machine and transverse directions after the film is subjected to heat treatment at 105.degree. C. for 30 minutes. The film is not easily curled even if one side thereof is treated with a solvent, and is thus suitable for use involving a step of dipping one surface of a film in a solvent, such as solvent development-type photo resist film and base films for magnetic recording media.

Abstract: Disclosed herein is a transfer material for use with a printer, which comprises a biaxially oriented polyester film which simultaneously satisfies the following expressions (I) to (III):12.0.ltoreq.F.sub.5 .ltoreq.17.0 (I).sigma..ltoreq.0.06.times.F.sub.5 -0.5 (II)E.sub.p .gtoreq.4.times.10.sup.3 .times..DELTA.n.sub.p +250 (III)wherein F.sub.5 represents the F.sub.5 value (kg/mm.sup.2) in the machine direction of said polyester film, .sigma. represents a heat shrinkage (%) in the machine direction of said polyester film after heat treatment at 100.degree. C. for 30 minutes, E.sub.p represents a Young's modulus (kg/mm.sup.2) in the machine direction, and .DELTA.n.sub.p represents a degree of plane orientation of said polyester film, and a transfer ink layer formed on one surface or both surfaces of said polyester film.

Abstract: A heat-resistant film or sheet produced by melt extruding polyether ketone having an intrinsic viscosity of at least 0.4 dl/g, which is obtained by heat treating an unstretched film or sheet which comprises (i) heat-treating to crystallization being not more than 60%, or (ii) uni- or biaxially stretching under specific conditions to an extent in which a stress at 5% elongation in the stretched direction is at least 13 kg/mm.sup.2 ; an initial elastic modulus in the stretched direction is at least 600 kg/mm.sup.2 ; and thermal shrinkages in a lengthwise direction and its vertical direction are not more than 4%.The film or sheet of the present invention is excellent in such properties as heat resistance, mechanical strength and the like, and is suitable for use as a substrate for magnetic recording or electric insulation.

Abstract: A biaxially oriented polyester film for floppy disks which has an in-plane thermal expansion coefficient (.alpha..sub..gamma.) of (1.7.+-.0.8).times.10.sup.-5 /.degree.C. and a shrinkage of not more than 0.03% after 72-hour treatment under the conditions of 60.degree. C. and 80% RH, and which simultaneously satisfies the following relationships (1) to (6):1.492.ltoreq.n.alpha..ltoreq.1.505 (1)0.160.ltoreq..DELTA.P.ltoreq.0.168 (2)1.605.ltoreq.n.ltoreq.1.609 (3)5.ltoreq.X.sub.I .ltoreq.15 (4)60.ltoreq.X.sub.100 .ltoreq.68 (5)1.395.ltoreq..rho..ltoreq.1.405 (6)wherein n.alpha. represents the refractive index of the film in the direction of the thickness, .DELTA.P the degree of planar orientation, n the average refractive index, X.sub.I the X-ray diffraction peak ratio, X.sub.100 the crystal size (A) in the (100) face, and .rho. the density.

Abstract: Disclosed herein is a polyethylene naphthalate film for high-density magnetic recording media of floppy disk which has little anisotropy, high mechanical strength and good dimensional stability, and which scarcely causes a drop out and has good productivity.

Abstract: Disclosed herein is a biaxially oriented polyester film for magnetic recording media, containing uniformly carbon black particles and having the following specific properties: ##EQU1## wherein T.sub.900 represents a light transmittance of the film at a wavelength of 900 nm, Ra represents an average surface roughness of the film n.sub.1 represents the number of protuberances of 0.81 to 1.08 .mu.m in height existing on the surface of the film per film area of 25 cm.sup.2, and n.sub.2 represents the number of protuberances of more than 1.08 .mu.m in height existing on the surface of the film per film area of 25 cm.sup.2.

Abstract: A polyethylene-2,6-naphthalate film for capacitors and, in particular, a polyethylene-2,6-naphthalate film which is excellent in heat resistance and mechanical strength and is useful for the dielectric of a chip type plastic film capacitor which requires a very thin film.

Abstract: A biaxially oriented polyester film simultaneously satisfying the following formulas (I) to (III):.vertline.S.sub.180 -S.sub.120 .vertline..ltoreq.54 (I)T.sub.S.sup.MD .gtoreq.100 (II)Q.sub.120 .ltoreq.0.7 (III)wherein S.sub.180 is shrinking stress (g/mm.sup.2) of the film in the machine direction at 180.degree. C., S.sub.120 is shrinking stress (g/mm.sup.2) of the film in the machine direction at 120.degree. C., T.sub.S.sup.MD is shrinkage initiation temperature (.degree.C.) of the film in the machine direction, and Q.sub.120 is shrinkage (%) of the film in the machine direction after 5 hours' treatment at 120.degree. C., is described. The film has a good dimensional stability due to its low shrinkage, particularly in the machine direction, and substantially free from defect such as wave and wrinkle.It is prepared by biaxially stretching, heat-setting and relaxing an extruded polyester film under particular conditions so as to obtain a biaxially oriented polyester film having these characteristics.