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Inventor: Yoshio Takasu


Address: Tama, JP
No. of patents: 41
Last patent issue date: 01/27/1998

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NumberTitleIssue Date
5712066Image forming method, recording medium, and visible image reproducing method
Provided an image forming method comprising the steps of; forming electric charges on a recording layer by charging the recording medium comprising a conductive substrate and, provided thereon a photoconductive layer and a recording layer containing a polymeri...
01/27/1998
5663032Photosensitive composition containing photosensitive and heat developable element and polymer element and image-forming method utilizing the same
A photosensitive material comprises a photosensitive composition comprising a photosensitive and heat-developable element and a photopolymerizable element. An imagewise unexposed area on the material is polymerized by imagewise exposure, heating and whole...
09/02/1997
5527650Image forming method recording medium and visible image reproducing medium
Provided an image forming method comprising the steps of; forming electric charges on a recording layer by charging the recording medium comprising a conductive substrate and, provided thereon a photoconductive layer and a recording layer containing a polymeri...
06/18/1996
5382497Optical recording medium and process for recording thereupon
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes, and a recording process comprising scanning the optical re...
01/17/1995
5320930Optical recording medium and process for recording thereon
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes, and a recording process comprising scanning the optical re...
06/14/1994
5278026Optical recording medium and process for recording thereupon
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes, and a recording process comprising scanning the optical re...
01/11/1994
5124235Photopolymerization initiator and photosensitive composition employing the same
A photopolymerization initiator comprises a borate salt represented by the general formula (I): Mn.sym. (B.crclbar. R1 R2 R3 R4)n wherein R1, R2, R3, and R...
06/23/1992
5079128Optical recording medium and process for recording thereupon
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes, and a recording process comprising scanning the optical re...
01/07/1992
5079127Optical recording medium and process for recording thereupon
An optical recording medium comprising a substrate and a thin organic film containing at least one kind of dye selected from polymethine family dyes, perylium family dyes, and cyanine family dyes, and a recording process comprising scanning the optical re...
01/07/1992
5041369Photosensitive material and image forming method
A photosensitive material comprises a photosensitive and heat-developable element, and further a light-to-heat conversion element or a nonlinear optical function element. The photosensitive and heat-developable element comprises at least a photosensitive ...
08/20/1991
5004667Photosensitive material, and image formation process and image formation apparatus using same
A photosensitive material and comprises a photosensitive and heat-developable element and a polymer, and is capable of being endowed with stickness by a change of pH value or being subjected to exposure and heating. An image formation process comprises th...
04/02/1991
5001032Photosensitive material containing a photosensitive and heat developable element and a polymerizable layer and image-forming method utilizing the same
A photosensitive material comprises a photosensitive layer and a polymerizable layer which are laminated. An area of the polymerizable layer, corresponding to an unexposed area of the photosensitive layer, is polymerized when the photosensitive material i...
03/19/1991
4995705Device, method and apparatus for optical modulation using ferroelectric polymer liquid crystals
An optical modulation method comprises writing in a ferroelectric having a glass transition point at or above the glass transition point, and holding the resultant written state below the glass transition point. Preferably, the ferroelectric is formed in ...
02/26/1991
4957854Optical recording medium
An optical recording medium comprises an organic thin film recording layer on a substrate, which medium performs recording of information by forming a pit with photoenergy, said organic thin film recording layer comprising an organic dye and a polymeric s...
09/18/1990
4945833Printing process using a pH change to transfer a thin layer of ink to a printing plate
A printing process using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the printing process, the ink is subjected to a pH change to be provided with an adhesiveness to a desired depth...
08/07/1990
4923390Optical recording medium IR-ray absorptive compound and optical recording medium by use thereof
An optical recording medium comprises at least one of polymethine type dyes represented by the formulae [1-I] through [2-IV] shown below, and a compound selected from an aminium salt compound and a diimonium salt compound in a recording layer....
05/08/1990
4899168Optical recording medium
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 ac...
02/06/1990
4816840Optical recording medium and method for producing the same
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)....
03/28/1989
4745030Electrostatic recording device
An electrostatic recording device of transfer system provided with a recording medium having a dielectric layer and an electroconductive substrate is disclosed in which the recording medium has a dielectric layer containing a fluorine-containing block cop...
05/17/1988
4738908Photothermal transducing type of recording medium
A photothermal transducing type of recording medium comprises at least one azulenium salt represented by the general formula [I], [II], [III], or [IV]....
04/19/1988
4734359Thermal recording material for display and image display device utilizing the same
Thermal recording material has a plate- or film-formed polymer blend layer which is in a mutually dissolved transparent state below a certain temperature and in a phase-separated opaque state above said temperature. This thermal recording material is empl...
03/29/1988
4693951Image forming method and image bearing member
An image bearing member for forming a toner image on the surface thereof characterized in that said surface has a maximum surface roughness of 20 μm or less, and an average surface roughness satisfying the relation of rࣘ2d between the average surface r...
09/15/1987
4675767Opto-magnetic recording medium
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...
06/23/1987
4673630Photoconductive film and electrophotographic photosensitive member contains azulenium salt
Photoconductive films contain specified azulenium salt compounds. Electrophotographic photosensitive members are provided with a photoconductive film containing at least one of the specified azulenium salt compounds....
06/16/1987
4629670Photoconductive film of azulenium salt and electrophotographic photosensitive member
Photoconductive films contain specified azulenium salt compounds. Electrophotographic photosensitive members are provided with a photoconductive film containing at least one of the specified azulenium salt compounds....
12/16/1986
4614951Optical recording medium
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....
09/30/1986
4579799Photoconductive film electrophotographic photosensitive member therewith
A photoconductive film comprises an azulenium salt represented by the general formula (1) ##STR1## wherein R1, R2, R3, R4, R5, R6, and R7 are each independently hydrogen, ha...
04/01/1986
4565761Electrophotographic process utilizing an azulenium salt-containing photosensitive member
An electrophotographic process involving charging and exposing to light a radiation sensitive organic thin film comprising a compound which has at least one nucleus of an azulenium salt....
01/21/1986
4551404Disazo electrophotographic photosensitive member
An electrophotographic photosensitive member characterized by containing at least one azo pigment represented by the following formula (1), (2), or (3): ##STR1## In these formulae; ##STR2## wherein Z represents ##STR3## in which R...
11/05/1985
4548886Radiation sensitive organic thin film comprising an azulenium salt
A radiation sensitive organic thin film comprising a compound which has at least one nucleus of azulanium salt....
10/22/1985
4481273Electrophotographic photosensitive member and preparation thereof
An electrophotographic photosensitive member comprising a photosensitive layer formed by coating of a coating solution containing a photoconductive compound on a electroconductive substrate followed by drying, said electroconductive substrate having a C/....
11/06/1984
4471694Printing process for transferring fixed image from master
A printing process comprise formation of fixed toner images on a photoconductive substrate by using an electrophotographic method, selective application of color materials onto the image portions of the fixed toner images, and printing of said color mater...
09/18/1984
4456671Electrophotographic photosensitive member having a photosensitive layer containing a hydrazone compound
An electrophotographic photosensitive member comprises a layer containing a binder and at least one hydrazone compound represented by the following formula (1), (2), (3), (4), or (5): ##STR1##...
06/26/1984
4454211Electrophotographic photosensitive member with pyrazoline charge transport material
An electrophotographic photosensitive member is characterized by comprising a layer which contains at least one pyrazoline compound represented by the following formula (I) or (II): ##STR1## wherein m and n represent 0 or 1; when both m and n are 0, ...
06/12/1984
4446217Electrophotographic photosensitive member having a hydrazone containing layer
An electrophotographic photosensitive member comprises a layer containing a hydrazone compound represented by the following formula (1) or (2): ##STR1## wherein, Z is an atomic group necessary to complete a substituted or unsubstituted heterocyclic r...
05/01/1984
4427753Electrophotographic photosensitive member with disazo or trisazo compound
An electrophotographic photosensitive member comprises a layer containing at least one azo pigment represented by the following formula (I): ##STR1## in the formula, Cp represents a coupler residue; A1 and A2 each represent a di...
01/24/1984
4423129Electrophotographic member having layer containing methylidenyl hydrazone compound
An electrophotographic photosensitive member is characterized by having a layer which contains at least one hydrazone compound represented by the following formula (1) or (2): ##STR1## wherein R11 represents substituted or unsubstituted na...
12/27/1983
4399208Electrophotographic photosensitive member
An electrophotographic photosensitive member is characterized by having a layer containing at least one hydrazone compound represented by the following formula [I] or [II]: ##STR1## wherein R11 and R12 represent hydrogen, haloge...
08/16/1983
4340660Toner for development having crosslinked polymers
A toner for development comprises a crosslinked vinyl polymer having a gel content of 50-99% and a crosslinked vinyl polymer having a gel content of 10-0%....
07/20/1982
4336318Electrostatic image developing method
In a method for developing electrostatic images comprising facing an electrostatic image bearing member bearing electrostatic images on the surface to a support member having a toner particle layer on the surface, when the triboelectric charge of the tone...
06/22/1982
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