Hitachi Maxell, Limited

Tsunemi Ohiwa

Toshio Oshima

Masato Nishida

Akira Kawakami

Yoshinori Yamamoto

Toshikatsu Manabe

Shuichi Wada

Ryo Nagai

Saburo Nonogaki

Kunio Wakai

Kazusuke Yamanaka

Kozo Kajita

Kenichi Yokoyama

Yoji Takeuchi

Minoru Ichijo

Takashi Kubota

Takato Karashima

Taiji Matsumoto

Hiroshi Fujiyasu

Keiichiro Uenae

Fumio Kokai

Masanobu Kizu

Katsumi Takiguchi

Souichi Ogawa

Tsutomu Yamaguchi

Masaaki Yoshitake

Akihiko Itoh

Youji Takeuchi

Hirokazu Kidou

Toshio Ohshima

A thin-film EL element having as a laminated luminescent composite a configuration comprising at least a first layer and a second layer wherein

Thin-film electroluminescent element

An ink ribbon comprising a base film and an ink layer having a thickness of from 1 to 10 .mu.m and containing a particle form infrared ray-emitting fluorescent substance having excellent light emitting characteristics.

Ink ribbon

An ink composition containing an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin, which is excellent in light-emitting characteristics.

Ink composition

Latent image forming member and method of manufacturing, latent image

An infrared-absorbing mark printed matter in which an infrared-absorbing mark is formed on a substrate by printing with an ink having high light absorptivity in the infrared region; the infrared-absorbing mark is covered up by smearing with an ink having high light absorptivity in the visible region and pervious to light in the infrared region to form a colored concealing layer; and on the colored concealing layer is formed a white concealing layer by printing with an ink containing a white pigment and an extender pigment of which at least part of the particles are those having an average particle size of 3 to 20 .mu.m.

Infrared-absorbing mark printed matter

A detection mark comprising a pattern formed from a thin phosphor layer which emits a light having a different wavelength from that of an excitation light irradiated on a surface side of the phosphor layer, and an undercoat layer which is formed on a rear surface side of the phosphor layer and reflects the excitation light, which mark can be detected by intermittently irradiating the excitation light to the mark and reading a light or afterglow from the phosphor layer.

Detection mark and method and apparatus for detecting mark

In a method of charging secondary battery, the charging control is performed when it is detected that the secondary differential value of the detected voltage curve changes from positive value to a negative value at the point C or its near portion.

Method of charging secondary batteries

In a dual insulation thin film type electroluminescence device comprising a first insulation layer, a light emitting layer and a second insulation layer between a transparent electrode layer and a back electrode layer, a tantalum oxynitride layer is provided between the transparent electrode layer and the first insulation layer to prevent increase of the resistance in the transparent electrode and to prevent increase of current leakage in the insulation layer so that a high luminescence can be achieved.

Dual insulation oxynitride blocking thin film electroluminescence

An electrochromic display device which comprises a display electrode comprising a transparent substrate, a transparent electrode formed on an inner surface of the transparent substrate and an electrochromic material layer for display made of tungstgen oxide and formed on the transparent electrode; a counter electrode comprising a substrate, a conductive layer formed on an inner surface of the substrate and an activated carbon fiber cloth bonded to the conductive layer with a conductive adhesive; and a spacer provided beween the display electrode and the counter electrode with their inner surfaces facing to each other to define, between them, an electrolyte chamber, which is filled with an electrolyte comprising LiClO.sub.4 dissolved in propylene carbonate containing water and an acid, which device has an increased original injected charge and good maintenance of the injected charge after prolonged storage.

Electrochromic display device

An electrochromic display device which comprises a display electrode comprising a transparent substrate, a transparent electrode formed on an inner surface of the transparent substrate and an electrochromic material layer for display made of tungsten oxide and formed on the transparent electrode; a counter electrode comprising a substrate, a conductive layer formed on an inner surface of the substrate and an activated carbon fiber material; and a spacer provided between the display electrode and the counter electrode with their inner surfaces facing each other to define, between them, an electrolyte chamber, which is filled with an electrolyte comprising a lithium salt and at least one of the tertiary alkyl ammonium salts and quarternary alkyl ammonium slats dissolved in a non-aqueous medium containing a small amount of water, which device has increased original injected charge which can last for a long time.

A magnetic recording medium comprising a substrate, a magnetic layer and a protective layer which consists of an organic polymeric material comprising carbon atoms, hydrogen atoms and oxygen atoms, the content of the oxygen atoms increasing towards the outer surface of the protective layer, which has improved durability and corrosion resistance.

Magnetic recording medium and production thereof

Growing community of inventors

Osaka, Japan

Tsunemi Ohiwa