Konica Corporation

Mitsunori Matsuura

Hiroshi Kita

Taketoshi Yamada

Noritaka Nakayama

Norio Miura

Kiyoshi Fukusaka

Noriko Ueda

Shinji Matsumoto

Motoi Kinoshita

An organic electroluminescence element with a light emission layer containing a host compound and a phosphorescent compound. The host compound contains a boron atom in the molecule and the phosphorescent compound is a metal complex containing a Group VIII metal.

Organic electroluminescence element and display

An organic electroluminescence element is disclosed which comprises a cathode, a light emission layer containing a host compound and a dopant compound, and at least one first layer provided between the cathode and the light emission layer, wherein the dopant compound is a phosphorescent compound, and the first layer is comprised of a first material having a molecular weight of from 500 to 2000, a maximum fluorescence wavelength of not longer than 415 nm, and an F to (H&plus;F) ratio F/(H&plus;F) of from 0 to 0.9 in which F and H represent the fluorine atom number and the hydrogen atom number in the molecule of the material, respectively.

Organic electro-luminescent element and material of organic electro-luminescent element

A silver halide photographic photosensitive material is disclosed. The silver halide photographic photosensitive material comprises a hydrazine compound at least one alkyl group which has no atom other than carbon and hydrogen atoms, has three or more branches, and does not bond to aromatic ring directly.

Silver halide photographic light sensitive material and hydrazine compound employed in it

A photopolymerizable composition and a presensitized planographic printing plate employing the same are disclosed which comprise a compound having an ethylenically unsaturated bond and a dye represented by the following formula (1) or (2): ##STR1##

Growing community of inventors

Tokyo, Japan

Mitsunori Matsuura