Nippon Paper Industries Co., Ltd.

Akio Hoshino

Hisahiro Omote

Masahide Takano

Mitsuhide Hoshino

Masahito Suzuki

Norio Yabe

Tomonobu Ohmura

Tomoyuki Nakano

Morio Matsuzaki

Jiro Yoshimura

Osamu Miyakawa

The present invention is an electrophotographic transfer paper where at least one side of the base paper is given a coating layer with a pigment and an adhesive agent to form coated paper and where the aforementioned adhesive contains a branched poly(meth)acrylamide copolymer having a cationic groups and/or anionic groups and also has a weight average molecular weight of 50,000 to 1,000,000. The electrophotographic transfer paper in the present invention has superior high-speed throughput performance despite low basis weight and a low coating weight, therefore, good for high-speed copy machine and printer properties, especially, when it contained a printability improver in the coating layer, it has a good ink adhesion property and surface strength required in offset printing.

Electrophotographic transfer paper

An electrophotographic OHP sheet comprising a transparent support and a toner-receiving layer formed on one side of the support, with the toner-receiving layer having suitability for toner fixation at a temperature in the neighborhood of 160&deg; C. to 200&deg; C. and comprising (a) a resin having a softening point of from 180&deg; C. to about 190&deg; C., (b) a resin having a softening point of from 110&deg; C. to 140&deg; C. and (c) a plasticizer having a plasticizing efficiency of 1.1 or below.

Electrophotographic overhead projector 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

Growing community of inventors

Kita-ku, Japan

Akio Hoshino