Abstract: An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.

Abstract: Disclosed is a data storage medium, comprising a recording layer containing molecules having a charge transport characteristics, molecules having a nonlinear optical characteristics, and optical functional molecules whose stereostructure is changed depending on a light irradiation, and a pair of transparent ohmic electrodes sandwiching the recording layer. The conductivity of the data storage medium is lowered by the light irradiation.

Abstract: An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.

Abstract: An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.

Abstract: Disclosed is an optical recording medium having a charge generating ability capable of generating electric charges with different polarities upon irradiation with light and a charge transporting ability capable of transporting at least one of the electric charges to separate specially the electric charges from each other forming an electric field upon irradiation with light, the optical characteristics of the optical recording medium being changed depending on the electric field, wherein the charge transporting capability is imparted by a charge transporting material formed of a molecule having a charge transporting capability or a polymer containing a monomer unit having a charge transporting capability. A light intensity pattern is recorded in the optical recording medium depending on the change in the optical characteristics caused by the electric field. The average intermolecular distance of a noticed charge transporting material is defined to fall within a predetermined range.

Abstract: Disclosed is an optical recording medium comprising a recording layer. The recording layer contains: a charge generation material generating an electron and a hole by light irradiation; a charge transport material transporting one of the electron and the hole; a charge trap which traps the transported one of the electron and the hole to separate the electron and the hole; and a non-linear optical material which changes optical properties of the recording layer in accordance with electric field formed by the electron and the hole being separated from each other. The non-linear optical material has an asymmetrical carbon atom and a cyclic group. Or, it is a cyclic-group-containing constituent having: an inversion symmetric pi-electron system; at least one of an electron donating group and an electron accepting group which are bonded to the inversion symmetric &pgr;-electron system; and an asymmetrical carbon atom.

Abstract: A recording/reproducing system records/reproduces information in a three-dimensional optical recording medium wherein information is recordable at three-dimensional optional positions and wherein position reference regions having optical characteristics different from those of recordable regions are previously provided at predetermined positions, and for reproducing information recorded in the three-dimensional optical recording medium. The recording system comprises a light source, a detector, a moving mechanism, and a light intensity adjuster. The reproducing system comprises a light source, a condenser, a detector, a moving mechanism, and a reproducing device.

Abstract: There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.

Abstract: A recording apparatus for holographic recording medium having an alignment mark and designed to irradiate a recording light beam onto a recording region of holographic recording medium to record information as a hologram. This apparatus comprises a recording laser recording the hologram onto the medium, an alignment laser irradiating an alignment light beam onto the medium, the alignment light beam being less absorbed than the recording light beam by the medium, and being reflected by the medium, a first lens converging the recording light beam and directing it toward the medium, a second lens converging the alignment light beam and directing it toward the medium, a photodetector detecting a light intensity of the alignment light beam reflected from the medium to recognize the alignment mark, and a driving mechanism adjusting a region to be irradiated with the recording light beam relative to the medium based on the alignment mark.

Abstract: Disclosed is an optical recording medium having a charge generating ability capable of generating electric charges with different polarities upon irradiation with light and a charge transporting ability capable of transporting at least one of the electric charges to separate specially the electric charges from each other forming an electric field upon irradiation with light, the optical characteristics of the optical recording medium being changed depending on the electric field, wherein the charge transporting capability is imparted by a charge transporting material formed of a molecule having a charge transporting capability or a polymer containing a monomer unit having a charge transporting capability. A light intensity pattern is recorded in the optical recording medium depending on the change in the optical characteristics caused by the electric field. The average intermolecular distance of a noticed charge transporting material is defined to fall within a predetermined range.

Abstract: An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.

Abstract: An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.

Abstract: A recording element which comprises a recording layer containing, a first charge-generating material adapted to generate a first electric charge by a supply of external energy, a first charge-transporting material for transporting the first electric charge, a charge-capturing material for capturing the first electric charge, and a material having an electro-optical effect, wherein a change in optical properties of the recording layer is caused only through an inner electric field to be generated by a delivery of electric charge between the first charge-generating material generating electric charge and the charge-capturing material capturing the electric charge.

Abstract: Disclosed is a photoconductor comprises, a material containing fullerenes and their derivatives arranged in an amorphous structure.

Abstract: The polysilanes and polysiloxanes of the present invention are polymers that contain silicon in the principal chain, and contain in the side chains alkaline soluble groups such as phenol-based hydroxy group and carboxyl group.One silicone resist material of the present invention comprises the polysilane or the polysiloxane in the above.Another silicone resist material of the present invention contains the above polysilane or polysiloxane, and an appropriate photosensitive agent.Still another silicone resist material of the present invention does not contain the above photosensitive agent, and in its stead, it contains a group that possesses photosensitive to ultraviolet rays or the like, via a siloxane bonding in the principal chain. As a substance with such photosensitivity, one may mention, for example, o-nitrobenzylsilyl groups that presents alkaline solubility when it is irradiated by ultraviolet rays.

Abstract: The polysilanes and polysiloxanes of the present invention are polymers that contain silicon in the principal chain, and contain in the side chains alkaline soluble groups such as phenol-based hydroxy group and carboxyl group.One silicone resist material of the present invention comprises the polysilane or the polysiloxane in the above.Another silicone resist material of the present invention contains the above polysilane or polysiloxane, and an appropriate photosensitive agent.Still another silicone resist material of the present invention does not contain the above photosensitive agent, and in its stead, it contains a group that possesses photosensitive to ultraviolet rays or the like, via a siloxane bonding in the principal chain. As a substance with such photosensitivity, one may mention, for example, o-nitrogenzylsilyl groups that presents alkaline solubility when it is irradiated by ultraviolet rays.

Abstract: The polysilanes and polysiloxanes of the present invention are polymers that contain silicon in the principal chain, and contain in the side chains alkaline soluble groups such as phenol-based hydroxy group and carboxyl group.One silicone resist material of the present invention comprises the polysilane or the polysiloxane in the above.Another silicone resist material of the present invention contains the above polysilane or polysiloxane, and an appropriate photosensitive agent.Still another silicone resist material of the present invention does not contain the above photosensitive agent, and in its stead, it contains a group that possesses photosensitive to ultraviolet rays or the like, via a siloxane bonding in the principal chain. As a substance with such photosensitivity, one may mention, for example, o-nitrobenzylsilyl groups that presents alkaline solubility when it is irradiated by ultraviolet rays.