Nitto-denko Corporation

Masayuki Kaneto

Tetsuya Ohsawa

Atsushi Hino

Masakazu Sugimoto

Yasuhito Ohwaki

Kazuo Ouchi

Amane Mochizuki

Toshiki Naito

Junji Yoshida

Yasushi Inoue

Shinya Ota

Kei Nakamura

Naoyuki Matsuo

Takuji Okeyui

Masao Nakamura

Kazumi Higashi

Megumu Nagasawa

Hitoshi Ishizaka

Masako Maeda

Chiaki Harada

Gosei Uemura

Tokio Fujita

Toshihiko Tomita

Yasuhiko Yamamoto

Toshio Nakajima

Shoji Morita

Munekazu Tanaka

Toshiaki Iwamoto

Tadanori Michimoto

Isao Ohki

Taizo Sasaki

Mamoru Hondo

Hideo Yamashita

In a resin joined body including at least one member made of a resin material that forms a first resin layer and a second resin layer, the at least one of the first and second resin layers having the rear side from which the laser beam has been irradiated has an absorption constant of 50 to 5000 mfor the wavelength of the laser beam, and the fuse bonded portion is formed to have a relationship of X&#x3e;Y, wherein a light transmittance of light passing from the first resin layer to the second resin layer via the fused portion is designated as X(%), and a light transmittance of light passing continuously from the first resin layer to the second resin layer via a portion other than the fused portion is designated as Y(%).

Resin joined body

The present invention provides a catheterhaving a structure wherein an electronic componentis mounted on the anterior end or an intermediate part of a tube, a signal line electrically connecting to the electronic componentextends from the vicinity of the electronic componentthrough the aforementioned tubeto the posterior end of the aforementioned tube, which is characterized in that the signal line consists of a wiring patternof the flexible printed circuit boardinserted in the tube. Consequently, an electronic component-loaded catheter can control increase in the size of the tube caused by multiple signal lines to be connected to the electronic component.

Catheter and production method thereof

The present invention provides a flexible printed circuit board having a band-like meandering pattern as a whole, which includes multiple linear parts configured about parallel to each other and a folding margin connected to one end in a longitudinal direction of two adjacent linear parts of the multiple linear parts, and which can turn into a single linear product having a total length of not less than 300 mm when the folding margin is double-folded at about a center thereof, and, at the folding margin, either of the two linear parts connected to the folding margin is folded back in a direction opposite by 180 degrees. As a result, a flexible printed circuit board for a catheter, which is sufficiently elongate for use as a signal line of a catheter, can be produced using a general-purpose production apparatus.

Flexible printed circuit board for catheter, catheter using same, and production method of catheter

A double-sided circuit board of which a solder conductor is prevented from deformation in a cycling test so as to maintain high connection reliability, comprises an insulating layer made of an organic high molecular weight resin and a circuit provided on each side of the insulating layer the circuits on both sides being electrically connected through via-holes filled with a conductor made of solder having a metal powder dispersed therein.

Double-sided circuit board and multilayer wiring board comprising the same and process for producing double-sided circuit board

A connecting method comprising laminating a flexible circuit substrate having a plurality of bump contacts with a contact object having a plurality of portions to be contacted such that the respective bump contacts face to the portions to be contacted at a joined surface, correspondingly each other to form a laminate, and applying pressure to the entire surface of the laminate in a compressing direction with pressurizing means provided so as to pinch the laminate in a laminating direction to contact the plural bump contacts mounted on the flexible circuit substrate with the plural portions to be contacted corresponding thereto mounted on the contact object, respectively.

Methods for connecting flexible circuit substrates to contact objects

Composite tubular article and process for producing the same

A flexible printed substrate imparted with an adhesive property for loading on an external substrate, a double printed substrate having formed on both surfaces thereof a metal layer or a wiring circuit, and a multilayer substrate having a multilayer structure are disclosed. The flexible printed substrate comprises an insulating resin layer comprising a low-linear expansion polyimide resin layer and a thermoplastic polyimide resin layer, and a metal layer or a wiring circuit formed on the low-linear expansion polyimide resin layer of the insulating resin layer, wherein a mixed region of the polyimide resin components is formed in the interface between the low-linear expansion polyimide resin layer and the thermoplastic polyimide resin layer.

Flexible printed substrate

Growing community of inventors

Ibaraki, Japan

Masayuki Kaneto