Toppan Printing Co., Ltd.

Godai Fukunaga

Yoko Hirai

Yuji Kubo

Sosuke Akao

Takehito Yamato

Mitsuru Endo

Yasunori Ono

Tomohiro Nakagome

Masashi Aimatsu

Takao Taguchi

Kazuhiro Osato

Yoshiaki Shiina

Yasuhiro Miyauchi

Luis Manuel Murillo-Mora

Hironobu Suda

Yuki Yasu

Kenjiro Kuroda

Yasuo Sugishita

Natsuka Sakai

Takeshi Itoi

Seiji Takizawa

Makiko Nitanai

Emi Ando

Noritaka Mihashi

A thermal transfer recording medium comprises a heat-resistant lubricating layer laminated on a first surface of a substrate, and an undercoat layer and a dye layer laminated in this order on a second surface of the substrate. The dye layer contains, as binders, a polyvinyl acetal resin, a phenoxy resin, and a graft copolymer having a main chain comprising polycarbonate and a side chain comprising a vinyl-based polymer, and also contains Compounds I, II, and III as cyan dyes.

Thermal transfer recording medium

A thermal transfer recording medium that satisfies the requirements for higher printing speed of thermal transfer, and high density and high quality of thermal transfer images, that better prevents the occurrence of abnormal transfer under high-temperature and high-humidity conditions, and that improves transfer sensitivity in printing. The thermal transfer recording medium includes a primer layer, an undercoat layer, and a dye layer in this order on one surface of a substrate, and a heat-resistant lubricating layer on the other surface of the substrate; wherein the primer layer contains polycarbonate and a polyurethane-urea resin having a polycaprolactam skeleton; the undercoat layer contains a copolymer of polyester and acrylic, and polyvinyl pyrrolidone; and the copolymer is a copolymer of polyester having a sulfonic acid group, and acrylic having at least one of a glycidyl group and a carboxyl group.

A thermal transfer recording medium that is capable of dealing with the requirement for an increase in thermal transfer printing speed, and high density and high quality of a thermally transferred image, capable of preventing the occurrence of abnormal transfer at high temperature and high humidity, and capable of improving transfer sensitivity in printing. A thermal transfer recording medium includes a heat-resistant lubricating layer on one surface of a base material, and an undercoat layer and a dye layer in that order on the other surface of the base material. The undercoat layer includes a copolymer of a polyester having a sulfonic acid group and an acrylic polymer having at least one of a glycidyl group and a carboxyl group, polyvinylpyrrolidone, and an oxazoline group-containing polymer. A binder resin of the dye layer is an acid-modified polyvinyl acetoacetal resin.

A thermal transfer recording medium that is able to better suppress bleeding or scumming of an image and better suppress the occurrence of peeling lines or abnormal transfer during thermal transfer. The thermal transfer recording medium according to an embodiment includes a heat-resistant slip layer that is formed on one surface of a base material, an undercoat layer that is formed on the other surface of the base material, and a dye layer that is formed on a surface of the undercoat layer that is opposite from the surface that faces the base material; wherein the dye layer includes at least a thermally transferable dye, a first binder resin and a release agent; the release agent includes polyether-modified silicone oil and a perfluoroalkyl compound, and the ratio of the polyether-modified silicone oil and perfluoroalkyl compound, on the basis of a weight ratio, is within the range 9:1 to 6:4.

There is provided a heat-sensitive transfer recording medium which is able to better suppress the occurrence of abnormal transfer during high-speed printing using a high-speed printer of sublimation transfer type and is able to improve transfer sensitivity in high-speed printing. The heat-sensitive transfer recording medium includes a base (), a heat-resistant lubricating layer () formed on one surface of the base (), an underlying layer () formed on the other surface of the base (), and a dye layer () formed on a surface of the underlying layer (), which is on the other side of a surface facing the base (). In the heat-sensitive transfer recording medium, the underlying layer () has a major component that is a copolymer of polyester having a sulfonic group on a side chain and acrylic having at least one of a glycidyl group and a carboxyl group.

Heat-sensitive transfer recording medium

The heat-sensitive transfer recording medium of the invention is such that an equilibrium moisture absorption rate at 23&#xb0; C./50% of an undercoating layer containing a water-soluble polymer as a main component is about 15% or less, preferably 13% or less, and more preferably, a mean value (&#x3b1;) of the surface roughness (root mean square deviation Sq) of the heat-resistant lubricating layer is about 0.05-0.40 &#x3bc;m, a mean value (&#x3b2;) of the surface roughness (root mean square deviation Sq) of the heat-resistant lubricating layer after being allowed to stand for 10 minutes at 150&#xb0; C. is about 0.00-0.70 &#x3bc;m, and a difference between the mean value (&#x3b1;) and the mean value (&#x3b2;) is about 0.00-0.30 &#x3bc;m.

Heat-sensitive transfer recording medium, producing method thereof and heat-sensitive transfer recording method

There is provided a thermal transfer recording medium capable of obtaining high transfer sensitivity during high-speed printing, that is, decreasing the amount of a dye used in a dye layer; and preventing abnormal transfer during printing even after storage in a high-temperature and high-humidity environment. The thermal transfer recording medium () contains: a heat-resistant sliding layer () that is formed on one surface of a substrate (); and an undercoat layer () and a dye layer () that are sequentially laminated on the other surface of the substrate (), in which the undercoat layer () contains, as major components, a polyvinyl pyrrolidone and a polyvinyl alcohol having a crystallinity degree of 15% or higher, and the dye layer () contains an anthraquinone-based thermal transfer dye.

A retardation layer that includes regions causing different retardations can be manufactured easily. A retardation substrate includes a substrate and a solidified liquid crystal layer facing its main surface. The solidified liquid crystal layer includes first to third regions, and a degree of depolarization for each of the regions is less than 5.0&#xd7;10. A difference between the maximum and minimum values of the degrees of depolarization obtained for the regions is less than 2.0&#xd7;10.

Retardation substrate, method of manufacturing the same, and liquid crystal display

A retardation substrate is provided, which includes a substrate and an optically anisotropic solidified liquid crystal layer which is supported by the substrate and formed as a continuous film made from a same material. The solidified liquid crystal layer comprises first to third regions each having two sub-regions which are a sub-region A and a sub-region B, an in-plane birefringence of theA sub-region is larger than that of theA sub-region, the in-plane birefringence of theA sub-region is smaller than that of theA sub-region, and an in-plane birefringence of theB sub-region is the same as that of theB sub-region, smaller than that of theA sub-region and larger than that of theA sub-region.

Retardation substrate, semi-transparent liquid crystal display, and method for manufacturing retardation substrate

A liquid crystal display device may include a first substrate; a second substrate; a first polarizing plate on the first substrate; a second polarizing plate arranged on the second substrate, and so that a direction of an absorption axis of the second polarizing plate being perpendicular to a direction of an absorption axis of the first polarizing plate; a liquid crystal layer arranged between the first substrate and the second substrate; a color filter layer arranged between the liquid crystal layer and the first or the second substrate, the color filter layer having a plurality of pixels of two or more colors. The retardation thin film has in-plane birefringence index satisfying 0.75&#x2266;&#x394;n[fr]/&#x3bb;d[fr]&#x2266;1.35 for a region corresponding to a reflection part of a pixel and satisfying &#x394;n[t]&#x3c;1.2 &#xd7;10for a region corresponding to a transmission part of a pixel.

Liquid crystal display device and method for manufacturing the same

In an optical sheet which is used for light control illumination in a backlight unit for a display, in order from an incident side of an illuminating light, there are provided at least a light scattering layer which scatters the illuminating light toward an outgoing surface side, an adhesion layer or an adhesive layer, a light reflection layer which reflects light scattered by the light scattering layer toward the light scattering layer side, and a lens sheet whose flat rear face is fixed to the other side of the light reflection layer, and in which a plurality of unit lenses are disposed on the surface. Opening portions corresponding to the respective unit lenses one-to-one are provided to the light reflection layer, and thickness of the adhesion layer or the adhesive layer is thinner than that of the light reflection layer.

Growing community of inventors

Tokyo, Japan

Godai Fukunaga