| Patent Number |
Title Of Patent |
Date Issued |
| 6998182 |
Organic luminescence device |
February 14, 2006 |
| In an organic luminescence device formed of one or plural layers of organic films between an anode and a cathode, at least one layer is any one of a luminescence layer, an electron injection layer and an electron-transporting layer and is formed of at least a phenolic derivative of a |
| 6342754 |
Charge-reducing film, image forming apparatus including said film and method of manufacturing sa |
January 29, 2002 |
| A charge-reducing film is used for coating a surface within a vacuum container containing electron-emitting devices to prevent deviations of electron beams caused by electric charges of the furface. The charge-reducing film comprises a nitrogen compound containing one or more than on |
| 6028824 |
Magnetooptical recording medium allowing overwriting with two or more magnetic layers |
February 22, 2000 |
| A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherei |
| 5783300 |
Magnetooptical recording medium allowing overwriting with two or more magnetic layers and record |
July 21, 1998 |
| A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherei |
| 5652738 |
Magnetooptical recording method for overwriting information on a recording medium includes selec |
July 29, 1997 |
| A magnetooptical recording method for overwriting information on a magnetooptical recording medium, which has a first magnetic layer and a second magnetic layer having a larger coercive force and a lower Curie temperature than those of the first magnetic layer, comprises an initializ |
| 5604046 |
Magneto-optical recording medium and a method using the same |
February 18, 1997 |
| This specification discloses a magneto-optical recording medium in which on the opposite side of a second magnetic layer having a relatively low curie temperature and a relatively great coercive force, there are laminated a first magnetic layer and a third magnetic layer each having a re |
| 5596555 |
Magnetooptical recording medium having magnetic layers that satisfy predetermined coercive force |
January 21, 1997 |
| A magnetooptical recording medium has first and second magnetic layers laminated in that order on a transparent substrate on which a received laser beam is incident. The coercive force of the second magnetic layer is greater than that of the first magnetic layer and is greater than . |
| 5591515 |
Magnetic recording medium with a recording layer composed of laminate structure of magnetic film |
January 7, 1997 |
| A magnetic recording medium with a superior magnetic properties and a high anticorrosive resistance comprises a substrate and a magnetic recording layer formed on the substrate. The magnetic recording layer is composed of first thin films comprising a rare earth-transition metal magnetic |
| 5536570 |
Overwrite capable magneto-optical recording medium having three magneto-optic layers |
July 16, 1996 |
| A magneto-optical recording medium capable of overwriting by light modulation comprises a substrate, a first magnetic layer having a curie point T.sub.1 and a coercive force H.sub.1, a second magnetic layer having a curie point T.sub.2 and a coercive force H.sub.2, and a third magnetic |
| 5529864 |
Optical recording medium having mask layer |
June 25, 1996 |
| An optical recording medium includes a transparent substrate, a recording layer formed on the transparent substrate, and a mask layer provided between the substrate and the recording layer. A material for the mask layer made of a nonlinear optical material is a photochromic compound, for |
| 5525378 |
Method for producing a magnetooptical recording medium |
June 11, 1996 |
| A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherei |
| 5521006 |
Magneto-optical recording medium |
May 28, 1996 |
| A magneto-optical recording medium includes a substrate, a perpendicular magnetic recording layer provided on the substrate and being a multilayered film formed by alternately laminating two or more combinations of Co layer and Pt layer, and a ground layer provided between the substr |
| 5503924 |
Exchange-coupled magnetooptical recording medium with first layer having smaller vertical orient |
April 2, 1996 |
| An overwritable magneto-optical recording medium is disclosed. The recording medium comprises a first magnetic layer exhibiting vertical magnetic anisotropy and a second magnetic layer having a higher Curie temperature and a lower coercive force at room temperature in comparison with |
| 5502692 |
Method and apparatus for recording, reproducing and overwriting information on or from a magneto |
March 26, 1996 |
| There are provided magnetooptic recording and reproducing method and apparatus of the Curie point writing type in which recording information can be read out by using a magnetic Kerr effect and the overwriting can be performed. At a position away from a laser irradiating section of a |
| 5481410 |
Magnetooptical recording medium allowing overwriting with two or more magnetic layers and record |
January 2, 1996 |
| A magnetooptical recording medium is provided with a transparent substrate, a first magnetic layer, a second magnetic layer having a higher Curie point and a lower coercive force than those of the first magnetic layer and being exchange coupled with the first magnetic layer. The medium |
| 5410521 |
Method and apparatus for recording information on a medium having biaxial magnetic anisotropy us |
April 25, 1995 |
| A method of information recording on a magnetic recording medium by applying a first magnetic field to the medium in a direction perpendicular to the surface of the substrate; and applying a second magnetic field to the medium in a direction along the surface of the substrate, wherein in |
| 5370945 |
Magnetooptic recording medium |
December 6, 1994 |
| A magnetooptic recording medium comprises a substrate and a recording layer which is provided on the substrate and is formed by periodically laminating a plurality of fundamental units. Each of the fundamental units comprises a first layer made of Co, a second layer made of a material |
| 5265073 |
Overwritable magneto-optical recording medium having two-layer magnetic films wherein one of the |
November 23, 1993 |
| A magneto-optical recording medium having a first magnetic layer and a second magnetic layer having a higher curie point and a lower coercive force than those of the first magnetic layer, which magneto-optical recording medium satisfying a condition of ##EQU1## where H.sub.H is a |
| 5163031 |
Method of recording tetra-value signal on magneto-optical recording medium with plural magnetic |
November 10, 1992 |
| A method for recording a signal on a magneto-optical recording medium comprising a first magnetic layer exhibiting a vertical magnetic anisotropy and a second magnetic layer exchange-coupled to the first magnetic layer and having a higher Curie point and a lower coercive force at a r |
| 5142491 |
Magnetic bubble recording device |
August 25, 1992 |
| Disclosed is an improved magnetic bubble recording device for optically effecting writing, reading and erasure of information with respect to magnetic bubbles. The magnetic bubble recording device has a basic structure in which a first magnetic film for forming a magnetic bubble ther |
| 5140547 |
Magnetic bubble recording element |
August 18, 1992 |
| A magnetic bubble recording element including a substrate having a transfer channel, a first magnetic layer for carrying a magnetic bubble and being formed on the substrate within and outside of the transfer channel with a surface of the first magnetic layer within the transfer channel b |
| 5132945 |
Magnetooptical recording medium allowing overwriting with two or more magnetic layers and record |
July 21, 1992 |
| A magnetooptical recording medium provided with a first magnetic layer and a second magnetic layer having a higher Curie point and a lower coercive force than the first magnetic layer and being exchange coupled with the first magnetic layer satisfies the relation: ##EQU1## wherei |
| 4999260 |
Magneto-optical recording medium comprising a rare-earth-transition metal dispersed in a dielect |
March 12, 1991 |
| A magneto-optical recording medium having at least one of a transition metal and a rare earth metal dispersed in a dielectric material and having an easy axis of magnetization normal to a film plane. |
| 4939023 |
Opto-magnetic recording medium |
July 3, 1990 |
| There is disclosed an optical recording medium provided with an optical recording layer on a substrate, in which a layer of nitride of a substance selected from tungsten, zirconium, titanium, niobium, vanadium, tantalum and chromium is formed on a side or both sides of the optical record |
| 4899168 |
Optical recording medium |
February 6, 1990 |
| An optical recording medium made up of a substrate and an electromagnetic radiation sensitive layer consisting essentially of a sulfur compound as a matrix and a substance (such as, for example, Te, Pb, Au, Sn, As, Bi, In, C) which is subjected to heat action from absorption of electroma |
| 4816840 |
Optical recording medium and method for producing the same |
March 28, 1989 |
| An optical recording medium, having a substrate and a thin film containing a fluoride compound and a substance capable of undergoing an optical change through absorption of electromagnetic radiation (a film sensitive to electromagnetic radiation). |
| 4795688 |
Layered photoconductive member comprising amorphous silicon |
January 3, 1989 |
| A photoconductive member comprises a support for a photoconductive member and an amorphous layer having photoconductivity and containing an amorphous material comprising silicon atom as a matrix, said amorphous layer having a first layer region containing oxygen atoms and a second la |
| 4737947 |
Recording medium having optomagnetic recording layer and optical recording layer with guide trac |
April 12, 1988 |
| An optical recording medium comprising a substrate, an optomagnetic recording layer made of a magnetic film where information can be recorded and reproduced by irradiation with a light beam, and an optical recording layer which can be modified in optical properties to form guide tracks |
| 4675767 |
Opto-magnetic recording medium |
June 23, 1987 |
| There is disclosed a magnetooptical recording medium, which is provided with a recording layer composed of a magnetic layer having an easy axis of magnetization perpendicular to the surface of recording layer, and a reflective layer positioned adjacent to the recording layer and composed |
| 4664977 |
Opto-magnetic recording medium |
May 12, 1987 |
| An opto-magnetic recording medium comprises a recording layer formed of a magnetic film having a readily magnetizable axis in a direction perpendicular to the surface of the film, and a reflective and phase modulating layer provided in contact with the recording layer. The reflective |
| 4636450 |
Photoconductive member having amorphous silicon matrix with oxygen and impurity containing regio |
January 13, 1987 |
| A photoconductive member comprises a support for a photoconductive member and an amorphous layer exhibiting photoconductivity and comprising an amorphous material comprising silicon atoms as a matrix and at least one member selected from the group consisting of hydrogen atoms and halogen |
| 4614951 |
Optical recording medium |
September 30, 1986 |
| An optical recording medium, comprising a substrate and a thin film which contains an iodine compound, and a substance undergoing an optical change through absorption of electromagnetic radiation. |
| 4547448 |
Photoconductive member comprising silicon and oxygen |
October 15, 1985 |
| A photoconductive member comprises a support for a photoconductive member; a first amorphous layer comprising an amorphous material containing silicon atoms as a matrix and exhibiting photoconductivity, said first amorphous layer having a first layer region containing oxygen atoms as |
| 4536460 |
Photoconductive member |
August 20, 1985 |
| A photoconductive member comprising a support and a silicon amorphous layer, and the silicon amorphous layer has a first layer region containing at least one of oxygen, nitrogen and carbon and a second layer region containing an element of Group III. The first layer exists internally |
| 4536459 |
Photoconductive member having multiple amorphous layers |
August 20, 1985 |
| A photoconductive member, comprises a support for a photoconductive member, a first amorphous layer exhibiting photoconductivity comprising an amorphous material containing silicon atoms as a martix, said first amorphous layer having a first layer region containing oxygen atoms in a |
| 4518671 |
Electrophotographic photosensitive Se or Se alloy doped with oxygen |
May 21, 1985 |
| An electrophotographic photosensitive member has a selenium type photoconductive layer containing 8000 ppm or less oxygen based on selenium. The member is free from a fatigue due to repeated use. |
| 4501807 |
Photoconductive member having an amorphous silicon layer |
February 26, 1985 |
| A photoconductive member comprising a support for photoconductive member and an amorphous layer exhibiting photoconductivity comprising an amorphous material containing silicon atoms as a matrix is characterized in that said amorphous layer has a first layer region containing, as con |
| 4490454 |
Photoconductive member comprising multiple amorphous layers |
December 25, 1984 |
| A photoconductive member comprises a support for photoconductive member and an amorphous layer comprising an amorphous material containing silicon atoms as a matrix and exhibiting photoconductivity, said amorphous layer having a first layer region containing, as constituent atoms, oxygen |
| 4486521 |
Photoconductive member with doped and oxygen containing amorphous silicon layers |
December 4, 1984 |
| A photoconductive member comprises a support for a photoconductive member and an amorphous layer containing an amorphous material comprising silicon atom as a matrix and having photoconductivity, said amorphous layer comprising a first layer region containing oxygen atom as a constituent |
| 4483911 |
Photoconductive member with amorphous silicon-carbon surface layer |
November 20, 1984 |
| A photoconductive member comprises a support and an amorphous layer comprising a first layer region and a second layer region, the first layer region having photoconductivity comprising an amorphous material which comprises silicon atoms as a matrix and at least one member selected from |
| 4460670 |
Photoconductive member with .alpha.-Si and C, N or O and dopant |
July 17, 1984 |
| A photoconductive member comprises a support for a photoconductive member and an amorphous layer having photoconductivity constituted of an amorphous material comprising silicon atoms as a matrix, said amorphous layer having a first layer region containing at least one kind of atoms |
| 4460669 |
Photoconductive member with .alpha.-Si and C, U or D and dopant |
July 17, 1984 |
| A photoconductive member comprises a support for a photoconductive member and an amorphous layer having photoconductivity constituted of an amorphous material comprising silicon atoms as a matrix, said amorphous layer having a first layer region containing as the constituent atom at |
| 4452875 |
Amorphous photoconductive member with .alpha.-Si interlayers |
June 5, 1984 |
| A photoconductive member comprises a support for a photoconductive member, an interface layer comprising an amorphous material containing silicon atoms and nitrogen atoms as constituent atoms, a rectifying layer comprising an amorphous material containing atoms (A) belonging to the g |
| 4452874 |
Photoconductive member with multiple amorphous Si layers |
June 5, 1984 |
| A photoconductive member comprises a support for photoconductive member, an interface layer comprising an amorphous material represented by any of the formulas:(wherein X represents a halogen atom),a rectifying layer comprising an amorphous material containing atoms (A) belonging to the |
| 4423133 |
Photoconductive member of amorphous silicon |
December 27, 1983 |
| A photoconductive layer comprises a support and an amorphous layer. The amorphous layer is photoconductive, comprises silicon as matrix and hydrogen and/or halogen, and has a layer region containing group III atoms which is distributed such that the distribution is continuous in the |
