Ube Industries, Inc.

Takion Co., Ltd.

Shozo Katsuki

Toshihiko Anno

Sumitaka Tachikawa

Akira Ohnishi

Hidenori Mii

Yutaka Saitoh

Hiroaki Yamaguchi

Tsutomu Tanaka

Osamu Nakayama

Koji Masutani

Takuji Takahashi

Kohji Narui

A metal-coated aromatic polyimide film having high peel strength between the polyimide film and the metal coat can be advantageously prepared by the steps of treating an aromatic polyimide film composed of a polyimide substrate layer of aromatic polyimide having biphenyltetracarboxylic acid units in its molecular structure coated with a polyimide surface layer of aromatic polyimide having bendable bondings in its molecular structure, with electric discharge under reduced pressure, to produce protrusions connected with each other in the form of network of chain on the surface layer, and placing plural metal films on the surface layer having the protrusions.

Process for preparing metal-coated aromatic polyimide film

The present invention provides a small sized wide wave-range spectroscope with a simple structure which requires a short time to measure light for measurement over a wide wavelength spectrum. The small sized wide wave-range spectroscope has a collimator () for changing light for measurement (L) transmitted through a slit () into collimated light (L), a plurality of diffraction gratings () with different grating constants d supported rotatably around a rotational axis in parallel with the incident slit () and disposed side by side in the direction of the rotational axis in the optical path of the collimated light (L), and a diffracted-light focusing members () for focusing a plurality of diffracted light rays (Lto L) provided by the plurality of diffraction gratings () by which the collimated light (L) is diffracted, each of the diffracted-light focusing members () being provided in association with each of the plurality of diffraction gratings ().

Small sized wide wave-range spectroscope

A wireless measuring deviceis provided which includes a plurality of child unitsand a parent unitto receive data measured by these child unitsby wireless communication. Each of the child unitshas a controlling sectionthat can move to a standby state, a measuring section, a signal receiving sectionto receive a measurement instructing signal from the parent unit, and a signal transmitting sectionto transmit the measured data by wireless communication. The parent unithas a signal transmitting section to transmit the measurement instructing signal to each of the child unitsand a measured data receiving sectionto receive measured data to be transmitted from the signal transmitting section

Wireless measuring device

An electro-conductive metal plated polyimide substrate is composed of an aromatic polyimide substrate, a subbing metal layer of Mo&#x2014;Ni alloy (in which a weight ratio of Mo to Ni is 75/25 to 99/1, and a plated electro-conductive film.

Electro-conductive metal plated polyimide substrate

An aromatic polyimide film for producing an electro-conductive sealing element of a packaged semi-conductor device, has a thickness of 20 to 60 &#x3bc;m, a moisture vapor transmission coefficient of 0.05 to 0.8 g/mm/m&#xb7;24 hrs, a water absorption ratio of 2.0% or less, and an elastic modulus in tension of 5,000 MPa or more, in which a surface of the polyimide film has been treated with reduced-pressure plasma discharge.

Aromatic polyimide film for electro-conductive sealing element of packaged semi-conductor device

A method of surface treating a polyimide film to impart improved adhesion to metal which comprises treating the surface of a polyimide film having a biphenyltetracarboxylic acid component by contact to a solution containing potassium permanganate and/or sodium permanganate and potassium hydroxide and/or sodium hydroxide and treating said surface with an acid.

Growing community of inventors

Yamaguchi, Japan

Shozo Katsuki