Sony Corporation

Naotake Kobayashi

Yoshio Fujiwara

Tetsuya Abe

Satoru Shinohara

Makoto Nishimura

Kazuaki Suzuki

Keiichi Naito

Hisashi Ando

Hidehiro Numao

Shinohara Satoru

Yuichi Matsubara

The present invention relates to a cover film for hard copy printing paper which can easily form a colorless and transparent protecting layer on the surface of, for example, a printing paper on which a color picture image is printed. The cover film for hard copy printing paper is such one that the cover film for hard copy printing paper is formed on the surface of a hard copy printing paper on which the printing is carried out by the sublimation transfer method and the cover film is designed to include at least one layer the glass transition temperature of which is selected to be higher than 40.degree. C. and whose water absorbing ratio (ASTM D570) is selected to be lower than 2%, whereby even under high temperature and high humidity, the bad influence exerted by the movement of a dye can be removed.

Cover film for hard copy printing paper

An electrically conductive adhesive sheet is disclosed which has an electrically conducting property across a thickness thereof and an electrically insulating property along a sheet surface direction. The electrically conductive adhesive sheet comprises an electrically insulating adhesive material and electrically conductive metal powder uniformly dispersed therein. The metal powder has a melting point lower than a certain working temperature, and is flattened by application of pressure between a pair of conductors between which the adhesive sheet is provided. The adhesive material is molten at the certain working temperature and is flown by application of pressure. The adhesive sheet is useful to electrically connect a pair of circuit boards each having a plurality of conductor patterns thereon by bonding corresponding ones through the metal powder as molten, while keeping the neighboring patterns insulated. The circuit board is mechanically integrated simultaneously by the adhesive sheet. The circuit board and the connection structure using such an adhesive sheet as above are also disclosed.

Electrically conductive adhesive sheet, circuit board and electrical

Sublimation transfer system color hard copy printing paper

The present invention relates to a sublimation transfer system color hard-copy printing paper and its object is to present an optimum coloring when the color hard-copying according to the subtractive color mixing process is carried out. To this end, the sublimation transfer system color hard-copy printing paper according to the present invention is provided at least on its surface with a resin layer containing a metal compound selected from Al, Mg, Ca and Sn wherein the sublimation dye is transferred and then colored on this resin layer.

Sublimation transfer type color hard-copy printing paper

Ink ribbon for sublimation transfer type hard copy

Sublimation ink ribbon

Cover film for sublimation transfer type hard copy

Cover film for color hard copy printing paper

Releasing agent

A method for the manufacture of an adhesive suitable for use with polyvinylfluoride sheets which includes the steps of copolymerizing a vinyl compound and a vinyl compound having an epoxy group and then treating the copolymer thus produced with aqueous ammonia to aminate the epoxy group.

Method of manufacturing an adhesive

Growing community of inventors

Utsunomiya, Japan

Naotake Kobayashi