Hitachi Maxell, Limited

Kyoichi Kohama

Wasao Takasugi

Kazuhiko Daido

Tomotaka Ozeki

Yoshio Imai

The present invention is intended to provide an information carrier which has flat surfaces, is excellent in beautiful appearance, and permits necessary printing thereon after the production of the carrier, and a process for producing such a thin information carrier easily in high yield. The substrate 3 of the information storage carrier is composed of a material obtained by infiltrating a resin 8 into a reinforcer 7 made of a sheet-like material deformable in the direction of the thickness. An IC module 1 and a coil 2 are embedded in indents 34 formed by compressing the reinforcer 7 in the direction of the thickness, to smoothen both right and reverse sides of the substrate 3. Cover sheets 4 and 5 are attached to the right and reverse sides, respectively, of the substrate 3 with a bonding layer 6 to obtain the required information storage carrier. The substrate 3 having smooth right and reverse sides can be produced by placing the IC module 1 and the coil 2 on the aforesaid reinforcer impregnated with the resin and pressing the IC module 1 and the coil 2 until the surface of the resin layer and the surfaces of the IC module 1 and the coil 2 are placed on the same plane.

Information carrier and process for producing same

A memory card having a printed circuit board mounted with semiconductor elements and provided with terminal portions along one side thereof and a card basic board formed with a broad recess on the lower surface thereof for receiving said printed circuit board therein. Void contact spaces are provided along one side thereof. The card basic board is formed with upper openings for communicating with the contact spaces on the upper surface of the card basic board and with inserting ports for communicating with the contact spaces on a side surface of the card basic board. Upper beams are provided between the upper openings and the corresponding inserting ports, and lower beams are provided near the inserting ports.

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Toride, Japan

Kyoichi Kohama