Class 430/91 - Dye or pigment

Subclass of Class 430 - Radiation imagery chemistry: process, composition, or product thereof
Definition: Compositions in the form of a dye or pigment.
No. of patents: 30
Last issue date: 10/16/2007

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Number	Title	Issue Date
7282349	Solvatochromatic bacterial detection Solvatochromic dyes are used herein to indicate the presence of bacteria by incorporating them into various substrates such as films, woven and nonwoven fabrics, paper towels, coform and airlaid materials and bonded carded webs. These dyes change color in response t...	10/16/2007
6752936	Electrically conductive polymers An electrically conductive polymeric article including a polymeric material capable of exhibiting electrical conductivity; the polymeric material being rendered electrically conductive by treatment with a viologen salt. ...	06/22/2004
6612848	Electrical component system with rotatable electrical contacts A rotatable electrical connector has a pair of wiring boards. Each wiring board supports two (or more) concentric conductors that have substantially smooth coplanar surfaces. The coplanar surfaces of the concentric conductors on each wiring board define a...	09/02/2003
6331117	Electrical component system with rotatable electrical contacts A rotatable electrical connector has a pair of wiring boards. Each wiring board supports two (or more) concentric conductors that have substantially smooth coplanar surfaces. The coplanar surfaces of the concentric conductors on each wiring board define a...	12/18/2001
6330054	Image-forming method and image-forming apparatus on recording medium including microcapsules An image-forming apparatus forms an image by applying a control electric field having a polarity corresponding to recording information, to a recording medium having microcapsules including chargeable particles dispersed in a dispersion medium. The image-...	12/11/2001
5821021	Photosenstive material for electrophotography A photosensitive material for electrophotography, wherein the charge-generating agent comprises a P-type charge-generating pigment and an N-type charge-generating pigment in combination, at least part of these pigments being present in the form of aggrega...	10/13/1998
5656407	Photosensitive material for electrophotography A photosensitive material for electrophotography, wherein the charge-generating agent comprises a P-type charge-generating pigment and an N-type charge-generating pigment in combination, at least part of these pigments being present in the form of aggrega...	08/12/1997
5573879	Electrophotographic light-sensitive material An electrophotographic light-sensitive material which has improved electrostatic characteristics and image forming performance and is excellent particularly in reproducibility of highly accurate image using a liquid developer and image forming performance...	11/12/1996
5393625	Electrophotolithographic printing plate precursor Disclosed is electrophotolithographic plate precursor having on a conductive support at least one photoconductive layer containing at least a random copolymer binder resin (P) (i) having a weight average molecular weight of from 5×104 to 5×10...	02/28/1995
5382488	Electrophotographic light-sensitive material An electrophotographic light-sensitive material which has improved electrostatic characteristics and image forming performance and is excellent particularly in reproducibility of highly accurate image using a liquid developer and image forming performance...	01/17/1995
5306586	Dual layer switch photoreceptor structures for digital imaging An electrophotographic imaging member including a charge generating layer and a heterogeneous charge transport layer, the charge transport layer having regions of charge transport and inactive regions and the charge transporting regions are in contact wit...	04/26/1994
5294507	Electrophotographic lithographic printing plate precursor An electrophotographic lithographic printing plate precursor having a photoconductive layer containing resin (A) having a weight average molecular weight of from 1×103 to 2×104 and containing a polymer component of the specified re...	03/15/1994
5283144	Purified photogenerating pigments A photoreceptor includes a charge generating layer having: 1) a photogenerating pigment purified by sublimation at a pressure not greater than 10-3 Torr and subsequent condensation of the photogenerating pigment at a temperature less than about...	02/01/1994
5095379	Color filter, liquid crystal display using same and method of repair thereof by using a negative photosensitive resin Color filters, including those used in a liquid crystal display, aee repaired in a self-aligning manner. Defective parts of the colored pixels of a filter are filled with a negative type photosensitive resin containing a pigment of the same color as the c...	03/10/1992
4954413	Method of making photoconductive particles A method for making a photoconductive powder which comprises the steps of preparing fine particles of metal oxide or metal hydroxide by hydrolyzing a metal alkoxide or metal acetylacetonate; and immersing the fine particles into pigment containing suspens...	09/04/1990
4857431	Photoconductive composition A photoconductive composition is disclosed, comprising at least an inorganic photoconductive material, a sensitizing dye and a resin binder wherein the sensitizing dye is a compound containing at least one acidic group in the molecule thereof as represent...	08/15/1989
4820846	Triarylmethane compounds, their preparation and use as photoconductive systems Compounds which are useful as sensitizers of photoconductors, having the general formula: ##STR1## in which: like symbols represent identical substituents, at least 4 of R1 to R9 represent hydrogen atoms and the remaining R...	04/11/1989
4741983	Dual dye sensitized electrophotographic zinc oxide A photoconductive composition useful in electrophotography comprising a mixture of photoconductive zinc oxide, a binder, a first dye which absorbs near infrared radiation and which is effective in sensitizing the zinc oxide to near infrared radiation, and...	05/03/1988
4629670	Photoconductive 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
4539282	Electrophotographic photoconductive elements Electrophotographic photosensitive element using zinc oxide in a photosensitive layer thereof formed in conductive support are described. Zinc oxide is used in combination with polycarbonate binder and a compound of the specific type. The compound is repr...	09/03/1985
4391892	Multiple copy electrophotographic process using dye sensitized ZnO In an electrostatic photographic process comprising subjecting an electrostatic photographic photosensitive plate to the combination of negative charging, positive charging and imagewise exposure to form an electrostatic latent image of a positive polarit...	07/05/1983
4384034	Thiopyrylium dye sensitized photoconductive materials A photoconductive layer sensitized by a compound of the general formula: ##STR1## in which: R1 and R2 independently represent a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, an aralkyl or...	05/17/1983
4308334	Method of sensitizing zinc oxide with sensitizing dye and photosensitive layers utilizing the sensitized zinc oxide A sensitizing dye and a hydrophilic resin are dissolved in a first solvent, and a second solvent is added to the solution. The second solvent is less volatile than the first solvent, miscible therewith and does not dissolve both of the sensitizing dye and...	12/29/1981
4283474	Oleophilic resin encapsulates photoconductive zinc oxide particles dispersed in vinyl chloride and vinyl acetate resin binder for electrophotosensitive recording layer An electrophotographic element having a conductive support upon which a coating of oleophilic resin-encapsulated zinc oxide particles, and a sensitizer dispersed in a binder containing vinyl chloride and vinyl acetate polymers is disclosed. Capsule wall c...	08/11/1981
4200461	Xanthene type acid dye and a base dye-sensitized zinc oxide photoconductive element Disclosed is a photoconductive recording element having a high photosensitivity over the entire band of visible rays which comprises an electroconductive substrate and a photoconductive layer formed on the substrate. The photoconductive layer comprises an...	04/29/1980
4118232	Photographic material containing sulphonic acid group containing disazo dyestuffs The invention is directed essentially to photographic material containing, on a carrier, a layer with azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##ST...	10/03/1978
4105449	Extruded electrophotographic recording material An electrophotographic recording material formed by extrusion, which comprises (A) 100 parts by weight of a blended composition of olefins having high and low melt indices in a specified weight ratio, (B) 0.025 to 40 parts by weight of a specified light-s...	08/08/1978
4054450	Indirect electrophotographic process with a nitro-phenolsultonephthalein Fading of the light-sensitivity of a dye-sensitized photoconductive layer used repeatedly for image formation in indirect electrophotographic copying is avoided by employing a photoconductive layer sensitized by a nitro-substituted dye such as a nitro-flu...	10/18/1977
3982938	Photoconductive toners which include photoconductive pigment particles in a charge-transporting insulating binder Improved toner particles each comprising an intimate mixture of a photoconductive pigment and an insulating binder capable of transporting charge carriers when the charge carriers are injected therein from the pigment, the proportion of the total volume o...	09/28/1976
3951655	Dye sensitized photoconductive material Electrophotographic sheet material comprising a dye-sensitized photoconductive layer is made resistant to fading of its light-sensitivity by incorporating in the photoconductive layer a nitro-substituted xanthene dye, e.g. safrosin....	04/20/1976

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Class 430/91 - Dye or pigment