Sony Corporation

Miki Sudo

Eiji Ohta

Shinichi Matsumura

Makoto Aoki

Toru Abiko

Hirokazu Odagiri

Satoko Asaoka

Katsuhiro Doi

Yu Andrew Chakchung

Kazuto Kawamata

An optical sheet is provided. The optical sheet includes: a light-transmissive base; and an optical functional layer provided to at least one surface of the base, in which the base is composed of a stack of transmissive sheets bonded while placing an adhesive material layer in between.

Optical sheet comprising a base composed of a stack of transmissive sheets, and a back-light device and liquid crystal device incorporating the optical sheet

A synthetic resin card in which card warpage can be reduced and a method for producing the same are provided. By setting the difference &#x394; in the angle of orientation between outer layers symmetrically laminated on a card core section, it is possible to reduce imbalance of stress resulting from the difference in the shrinkage factor between the outer layers, and card warpage can be suppressed. Furthermore, by setting the thickness of the outer layers at 25 &#x3bc;m to 125 &#x3bc;m, rising of the surface of the synthetic resin card can be reduced. By reducing the card warpage and the rising of the surface of the synthetic resin card, it is possible to improve moving characteristics when the synthetic resin card is allowed to move in a device.

Synthetic resin card and method of producing the same

A magnetic sticking sheet comprising a non-magnetic base and a magnetic layer formed on the non-magnetic base by coating a magnetic coating material containing ferromagnetic particles and a binder, the magnetic layer having a thickness of 0.03 to 0.10 mm, oriented longitudinally to give a squareness ratio of 80 to 90%, and multipolar-magnetized longitudinally; the sheet having a total thickness of 0.08 to 0.25 mm and flexibility for rolling; the magnetic layer having a surface magnetic flux density of 35 to 100G; and the sheet having a magnetic sticking force, required for removing a magnetic sticking sheet fixed magnetically on a magnetic surface via the magnetic layer while keeping the magnetic surface and the sheet parallel, of 0.4 to 0.9 gf/cm .

Magnetic sticking sheet and method of producing same

Growing community of inventors

Miyagi, Japan

Miki Sudo