Fujifilm Corporation

Fuji Photo Film Company, Limited

Masaharu Akiba

Yoshio Inagaki

Hiroo Takizawa

Hisashi Mikoshiba

Takeharu Tani

Hidehiro Mochizuki

Michihiro Shibata

Hiroaki Tsuyama

Toshio Sasaki

Shin-ichi Morishima

Eri Takahashi

Jun Kawamata

An optical information recording mediumcomprises a plurality of recording layers, and intermediate layerseach provided between the recording layers. Each of the recording layersincludes polymer binder and dye dispersed in the polymer binder, and the dye is subject to multi-photon absorption of a recording beam RB having a predetermined wavelength and to linear absorption not smaller than 1.5% per recording layer at the predetermined wavelength of the recording beam. When the dye is irradiated with the recording beam and generates heat by linear absorption and multi-photon absorption of the recoding beam RB, the polymer binder undergoes a change of shape by the generated heat, whereby an interface between the recording layerand the intermediate layer undergoes a change of shape to record information.

Optical information recording medium and method for recording information in optical information recording medium

A non-resonant two-photon absorption recording material containing at least (a) a non-resonant two-photon absorption compound, and (b) a recording component in which at least either a refractive index or fluorescence intensity changes, wherein the non-resonant two-photon absorption compound (a) is a compound having a structure represented by formula (1) as described.

Non-resonant two-photon absorption recording material and non-resonant two-photon absorption compound

The present invention provides a two-photon light-emitting compound represented by formula (1), an optical data recording medium comprising a compound represented by formula (1), a two-photon polymerizable composition comprising a polymerizable monomer or polymerizable oligomer and at least compound represented by formula (1), and a photopolymerization process:X&#x2014;(&#x2014;CR&#x2550;CR&#x2014;)&#x2014;C(&#x2550;O)&#x2014;(&#x2014;CR&#x2550;CR&#x2014;)&#x2014;X&#x2003;&#x2003;(1)

Non-resonant two-photon absorption induction method and process for emitting light thereby

A two-photon absorbing optical recording material comprising at least one two-photon absorbing compound and a recording component is provided. Recording is made on it by utilizing the two-photon absorption of the two-photon absorbing compound in the material, and then the material is irradiated with light to thereby detect the difference in the reflectance between the recorded area and the unrecorded area thereof, and the recorded information is thereby reproduced from the material, and also provided are a photosensitive polymer composition and a photon-mode recording method for the material.

Two-photon absorbing optical recording material and two-photon absorbing optical recording and reproducing method

An optical information-recording medium which contains a dye having at least two chromophores bonded to each other without any conjugated bond intervening between those chromophores.

Optical information-recording medium, novel oxonol compound and method of recording information

A compound represented by the formula (I) defined herein and a compound represented by the formula (II) defined herein, and a process for producing the compound represented by the formula (I) which comprises reacting the compound represented by the formula (III) defined herein with the compound represented by the formula (IV) defined herein.

Oxonol compound and process for producing the compound

A two-photon absorbing polymerizable composition contains at least a two-photon absorbing compound, a polymerization initiator and a polymerizable compound, the composition being photopolymerizable upon non-resonant two-photon absorption, wherein the two-photon absorbing compound is a methine dye containing a compound represented by the formula (1): wherein Rto Reach represents a hydrogen atom or a substituent and some of Rto Rmay combine with each other to form a ring; n and m each independently represents an integer of 0 to 4, provided that n and m are not 0 at the same time; Xand Xeach represents an aryl group, a heterocyclic group or a group represented by formula (2); Rrepresents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a heterocyclic group, and Zrepresents an atomic group for forming a 5- or 6-membered ring.

Growing community of inventors

Kanagawa, Japan

Masaharu Akiba