Fuji Photo Film Company, Limited

Hitachi, Ltd.

Fujitsu Corporation

Oki Electric Industry Co., Ltd.

Nippon Electric Co., Ltd.

Nippon Telegraph and Telephone Public Corporation

Oki Electric Industry, Ltd.

Takashi Usami

Tadahisa Sato

Katsuyoshi Yamakawa

Teruo Nagano

Shigeru Ohno

Shinichi Morishima

Junji Nishigaki

Akira Horiki

Masaki Yoshimaru

Kimiaki Shimokawa

Yoko Idogaki

Hajime Yamada

Shizuo Ito

Tadahiko Yasui

Hiromichi Konno

Takafumi Morishige

An ultraviolet-absorbing film comprising a fluorescent brightening agent and having a transmission of the rays of 410 nm or less of 90% or less, wherein the fluorescent brightening agent is represented by the following formula (I):wherein Rand Reach represents a hydrogen atom, an alkyl group or an alkoxyl group; Rand Reach represents an alkyl group; and [A] represents a substituted aryl or substituted ethenyl group.

Ultraviolet-absorbing film containing a fluorescent brightening agent

Fluorescent lamp cover and lighting fixture

Dye complex and optical information recording medium

A heptamethine cyanine compound is represented by the formula (I): in which each of Z.sup.1 and Z.sup.2 is an atomic group that forms a five or six-membered heterocyclic ring or a five or six-membered heterocyclic ring condensed with benzene ring or naphthalene ring; each of R.sup.1 and R.sup.2 is an alkyl group or a substituted alkyl group; each of Y.sup.1 and Y.sup.2 is carboxyl, a sulfonamido group or a sulfamoyl group; X is an anion; and n is 0 or 1. The present specification also discloses a near infrared absorbing ink, a near infrared absorbing sheet and a silver halide photographic material using the heptamethine cyanine compound as a near infrared absorbing dye.

Heptamethine cyanine compound, near infrared absorbing ink, near

A method for manufacturing an inter-layer insulating film (ex. O.sub.3, TEOS or NSG) with a superior surface flatness is disclosed to solve the problem that the surface of the inter-layer film formed on a certain under-layer substrate reveals roughness due to the influence of the substrate. It is provided a method for manufacturing O.sub.3 TEOS NSG film after doping nitrogen (N) atoms into the under-layer films, or after forming the under-layer films which contain nitrogen (N) atoms therein.

Method for manufacturing an inter-layer insulating film

Disclosed is a silver halide photographic material having a hydrophilic colloid layer which contains a dispersion of fine solid grains of at least one dye of formula (I): ##STR1## where R.sub.1 and R.sub.2 each represents an alkyl group, an aryl group, a cyano group or a group of COOR.sub.3, COR.sub.3, CONR.sub.4 R.sub.5, NR.sub.4 R.sub.5, NR.sub.4 COR.sub.3, NR.sub.4 CONR.sub.4 R.sub.5, OR.sub.3, SR.sub.3, SOR.sub.3 or SO.sub.2 R.sub.3 ; R.sub.3 being an alkyl group or an aryl group, and R.sub.4 and R.sub.5 each being a hydrogen atom, an alkyl group or an aryl group, and R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 being optionally bonded to each other to form a 5-membered or 6-membered ring; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; and n represents 0 or 1; provided that R.sub.1, R.sub.2, L.sub.1, L.sub.2 and L.sub.3 must not have an ionizable proton-having group or a salt thereof. The material preferably has, in addition to the dispersion of fine solid grains of at least one dye of formula (I), a dispersion of fine solid grains of at least one dye of formula (II): ##STR2## where R.sub.21 and R.sub.23 each represents a hydrogen atom, an alkyl group or an aryl group; R.sub.22 and R.sub.24 each represents an alkyl group, an aryl group, or a group of OR.sub.26, COOR.sub.26, COR.sub.25, SR.sub.26, SOR.sub.25, SO.sub.2 R.sub.25, CONR.sub.26 R.sub.27, NR.sub.26 COR.sub.25, NR.sub.26 CONR.sub.26 R.sub.27 or NR.sub.25 R.sub.26, or a cyano group; R.sub.25 being an alkyl group or an aryl group, and R.sub.26 and R.sub.27 each being a hydrogen atom, an alkyl group or an aryl group, and R.sub.25 and R.sub.26 or R.sub.26 and R.sub.27 being optionally bonded to each other to form a 5-membered or 6-membered ring; and L.sub.21, L.sub.22 and L.sub.23 each represents a methine group; provided that the formula has at least one aryl group having at least one substituent selected from the group consisting of a carboxylic acid group, a sulfonamide group and an arylsulfamoyl group except for the case where R.sub. 21 and R.sub.23 are both hydrogen atoms. The dyes (I) and (II) color only a hydrophilic colloid layer containing them, and they do not diffuse to any other layers during storage of the material. After developed, the dyes (I) and (II) are rapidly decolored.

Silver halide photographic material

A silver halide photographic material having on a support a hydrophilic colloid layer containing at least one 2-pyrazoline-5-one oxonol dye represented by formula (I) in the form of a dispersion of fine solid particles thereof; ##STR1## wherein R.sup.1 represents a hydrogen atom, an aryl group, a cyano group, a halogen atom, --COOR.sup.2, --COR.sup.3, --ONR.sup.3 R.sup.4, --OR.sup.2, --NHCOR.sup.3, or --NR.sup.3 R.sup.4 (wherein R.sup.2 represents an alkyl group or an aryl group and R.sup.3 and R.sup.4 each represents a hydrogen atom, an alkyl group, or an aryl group); and L.sup.1, L.sup.2, L.sup.3, L.sup.4, and L.sup.5 each represents a methine group.

Silver halide photographic material containing dispersed dye

In a composite concentration system of the type utilizing a time division system in which voice signals are digitized and then concentrated in a traffic, there are provided a first subscriber line interface means of a first type which connects subscriber lines directly to subscriber line interface circuits, a second subscriber line interface means of a second type which connects subscriber lines to subscriber line interface circuits via a space division concentration switch and a time division concentration switch connected to the first and second subscriber line interface means via switching interfaces. The number of output terminals of the first subscriber line interface means is equal to that of the output terminals of the second subscriber line interface means when a concentration ratio of the space division concentration switch to the second subscriber line interface means is 1:1 and corresponding output terminals are constructed such that the same channel is assigned to the time division concentration switch. The composite concentration system of this invention is inexpensive and can readily expand a telephone system according to a variation in percentage of calls or change in a service performance.

Composite concentration system

Growing community of inventors

Tokyo, Japan

Takashi Usami