Nippon Paper Industries Co., Ltd.

Mitsuhide Hoshino

Masahide Takano

Norio Yabe

Hisahiro Omote

Akio Hoshino

Tomonobu Ohmura

Satoshi Kuwabara

Fukuo Murata

Yasushi Umeda

Fumiko Ito

An ink jet recording sheet having on a support a first porous ink-receiving layer comprising inorganic fine particles and a binder resin and, on the first ink-receiving layer, a second ink-receiving layer comprising a resin capable of forming a glossy layer; wherein the fine pigment particles have an average particle size of from 10 to 500 nm, the first ink-receiving layer has a coverage of from 5 to 50 g/m on a dry solids basis, and the second ink-receiving layer has a coverage of from 0.1 to 2.0 g/m on a dry solids basis and a 60&deg; specular glossiness of at least 60% at the surface; and, if desired, wherein either the first or the second ink-receiving layer can have a specular surface by undergoing a surface treatment such as calendering.

Ink jet recording sheet

An ink jet recording material produced by preparing a material (i) for transfer use, which has on a support having a high surface smoothness an ink receiving layer comprising a porous inorganic composition and a resin component; preparing another material (ii) to undergo transfer, which has at least one ink receiving layer coated on at least one side of a substrate; bonding the ink receiving layer of the material (i) to the ink receiving layer of the material (ii) in tight contact to form a united ink receiving layer; and then peeling the support of the material (i) off the united ink receiving layer to reproduce the surface shape of the support at the surface of the united ink receiving layer; wherein the united ink receiving layer has a total thickness of at least 20 &mgr;m and a gloss of at least 60% when measured at the incident angle of 60&deg; according to JIS Z8741: and a method of producing the aforesaid ink jet recording material.

Ink jet recording material and method of producing the same

Disclosed is a heat transfer recording method that utilizes an indirect transfer medium with deformable layer deforming under heat and/or pressure and image-receiving layer having adhesiveness to the image formed by fusion type heat transfer recording of hot peeling mode and allowing to retransfer the formed image alone onto image receiver provided on a supporter in this order. In this indirect transfer medium, the constituting material of that deformable layer comprises a substance with softening temperature of not higher than 90.degree. C. and stretch at breaking point of not less than 400%, and further the constituting material of the image-receiving layer contains a substance, in which the major component is acrylic resin comprising methyl methacrylate or/and hydroxyethyl methacrylate and this is graft copolymerized with hydroxyethyl methacrylate or/and N-methylol acrylamide. The inventive recording method needs no exclusive image receiver and affords a high-quality record without transfer miss on various recording image receivers with different surface smoothnesses by transferring the recording image alone.

Heat transfer recording method and indirect transfer medium to be used

Disclosed is a method of producing ink jet recording medium provided with an ink-receiving layer having porous inorganic composition as a major component, characterized in that the ink-receiving layer having porous inorganic composition as a major component is coated onto a transferring substrate provided with release treatment, if need be, said ink-receiving layer and a recording substrate that will become a final supporter of ink jet recording medium are adhered with an adhesive, and then the transferring substrate is peeled off, thereby forming a surface of ink-receiving layer replicated the surface shape of said transferring substrate onto the recording substrate. The surface gloss of ink-receiving layer can be adjusted easily.

Method of producing ink jet recording medium

This invention relates to a photosensitive sheet having on a substrate one or more resin layers that are peelable from the substrate and heat-fusible, and a colored photosensitive layer in this order, said substrate comprising a biaxially stretched plastic film and having a molecular orientation ratio in the range of from 1.0 to 1.4. The object of this invention is to solve the problem of misregister without decreasing productivity during the formation of plastic film (substrate) or during the production of a photosensitive sheet in a method in which said photosensitive sheet having an image formed thereon and an image receiving sheet for receiving the image are superimposed on each other, and pressed and heated for image transfer.

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Higashimatsuyama, Japan

Mitsuhide Hoshino