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WO/2002/099535A1 |
A photoconductor comprises a substrate and a charge generation layer comprising cyclic carbonate polymer and a charge generation molecule. The photoconductor exhibits improved electrical characteristics.
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WO/2002/097536A1 |
A base for a photosensitive drum composed of a resin composition attached to a high−speed image forming apparatus has a structure in which a gear is attached to one end of the base body through a flange part of 0.1 to 5 mm in thickness...
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WO/2002/088846A2 |
Member for a printer, a fax machine, a copier or a toner cartridge, in which said member has a face R1, (5) in contact with toner particles, said face R1, (5) being provided with a top layer (4) in contact with toner particles, said top ...
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WO/2002/084407A1 |
A photosensitive drum-use substrate used in electrophotographic process is produced by ultrasonic-welding a resin-made flange or gear flange to an end of a cylindrical substrate formed from a conductive resin composition in which a condu...
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WO/2002/081452A1 |
A compound represented by the following general formula (1): (1) (wherein R�1? to R�4? each is hydrogen or a substituent selected from the group consisting of cyano, nitro, halogeno, hydroxy, alkyl, aryl, heterocycle, ester, alkoxy, ...
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WO/2002/071156A1 |
A photoconductor having a charge transport layer in illustrative embodiments of a polycarbonate binder, 30 to 60 percent by weight DEH hydrazone, o.5 percent to 5 percent acetosol yellow, and 0.5 percent by weight of the butylated reacti...
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WO/2002/063397A1 |
A method and apparatus for the electrostatic printing of dry or wet toners using a novel tiered printing plate allows for superior and efficient transfer of toner from the plate to the printed item. The process for producing the printing...
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WO2001029621A9 |
Testing of material (10) for use in electrophotographic printing for characteristics determined to be important for efficient high quality printing. These show a more complete profiling of the dielectric relaxation process in the materia...
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WO2001038089A9 |
The present invention relates to the fabrication of a durable electrostatic printing plate (10). The electrostatic printing plate (10) includes a substrate (20) with an image receiving layer (22) applied thereto. The image receiving laye...
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WO/2002/052661A1 |
The invention relates to the use of boron and aluminium compounds in the electronics sector, particularly as electronic transport material, as host material for the emission layer, as hole-blocking material respectively in phosphorescent...
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WO/2002/051850A1 |
The invention relates to substituted spiro compounds based on boron or aluminium and the use of the same in the electronics industry. The inventive compounds can be used as electron transport material, material for blocking holes and/or ...
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WO/2002/026476A1 |
The invention relates to a method and a device for producing continuous belts from plastic films for a transfer belt in an electrographic printer or copier by welding the ends of a plastic film (10). According to said method, the ends of...
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WO/2002/023279A1 |
A method, apparatus and system for controlling the amount of heat transferred to a process region (30) of a workpiece (W) from exposure with a pulse of radiation (10), which may be in the form of a scanning beam (B), using a thermally in...
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WO/2002/012963A2 |
A photoconductive composition useful for the preparation of printing plates is disclosed. The composition comprises an organic photoconductor, a charge carrier generating material, and a binder comprising a mixture of at least two copoly...
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WO/2002/012212A1 |
The invention relates to novel 4,5-di(het)aryl-substituted 2-(N,N-di(het)arylamino)-thiazole derivatives of general structure (a), whereby the following applies: R?1¿, R?2¿, R?3¿ and R?4¿, independent of one another, are each a monof...
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WO/2001/098211A1 |
Amorphous silica particles produced by flame hydrolysis of a silicon compound, which has an average median diameter of 0.1 to 0.7 $g(m)m, a BET specific surface area of 5 to 30 m?2¿/g, a dispersion coefficient of 40 or less and an absol...
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WO/2001/092961A1 |
The invention relates to a sheetlike material (2) which is used to produce flat sheets (1) receiving information. A coating (4) provided with cavities is applied to the sheetlike material (2). Electrically and/or magnetically activatable...
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WO/2001/092965A1 |
A photoconductor having a charge generation layer of pigment and a binder resin of a thorough mixture of polyvinylbutyral, a polysiloxane, and, preferably, a phenolic resin. An optimum formulation was Type IV oxotitanium phthalocyanine i...
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WO/2001/092960A1 |
A photoconductor comprises a substrate and a charge generation layer comprising a charge generation molecule and a binder selected from the group consisting of butylated reaction products of p-cresol and dicyclopentadine. The photoconduc...
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WO/2001/084246A1 |
An organic photoreceptor ('OPR') including a barrier layer including an undercoat formed from a composition including a poly(vinyl alcohol), a methylvinyl ether/maleic anhydride copolymer, and a crosslinker and an overcoat formed from a ...
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WO/2001/084245A1 |
A sulfonamide-containing aniline adduct of 2,4,7-trinitrofluorenone used as an electron transport compound is included in at least one layer of an organicphotoreceptor. Preferably, the sulfonamide-containing aniline adduct of 2,4,7-trini...
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WO/2001/084244A1 |
A quaternary ammonium salt of a polystyrene sulfonate used as an electron transport compound is included in at least one layer of an organicphotoreceptor. The quaternary ammonium salt of a polystyrene sulfonate preferably has Formula (I)...
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WO/2001/079937A1 |
Charge generation layers for photoconductors comprise a charge generation compound and at least one titanate which improves at least one electrical characteristic of a photoconductor in which the charge generation layer is included. Phot...
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WO/2001/075529A1 |
A photosensitive drum (100) is provided with an insert (104) by injecting a rapidly curing material directly into the drum (100) such that when the material cures, a noise/vibration reducing insert (104) is provided. The insert material ...
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WO/2001/073513A1 |
Charge generation layers comprise a charge generation compound and a binder which comprises polyvinylbutyral and phenolic resol. Dual layer photoconductors comprise the charge generation layer in combination with a substrate and a charge...
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WO/2001/071430A1 |
The invention features an organic photoreceptor that includes: (a) a change transport compound having formula (1) where R?1¿ and R?2¿, independently, are hydrogen, an alkyl group (e.g., a C¿1?-¿6? alkyl group), or an aryl group (e.g....
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WO/2001/068740A1 |
A charge transport material of formula (1) wherein Ar?1¿ and Ar?2¿ are each, independently, phenylene optionally substituted by one or more C¿1-40?-hydrocarbyl groups which may themselves be substituted; Ar?3¿ is phenyl optionally su...
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WO/2001/061415A1 |
Release compositions include (a) from zero to about 30 parts by weight of a polymer selected from the group consisting of formula (I) wherein R?1¿, R?2¿, R?3¿, R?6¿, R?7¿, R?10¿, R?11¿, and R?12¿ are each independently selected f...
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WO/2001/061413A2 |
Charge generation layers comprise a binder including an unsaturated aliphatic hydrocarbon and charge generation compound, wherein the unsaturated, aliphatic hydrocarbon comprises at least 10 carbon atoms. Charge transport layers comprise...
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WO/2001/061414A1 |
An organic photoreceptor ('OPR') including a barrier layer formed from a barrier layer coating composition inlcuding a cellulosic resin, methylvinyl ether/maleic anhydride copolymer, a polyamide, a crosslinker, and a combination thereof,...
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WO/2001/059528A1 |
Charge generation layers comprise a charge generation compound, a binder and microspheres. Dual layer photoconductors comprise the charge generation layer in combination with a substrate and a charge transport layer. Methods for forming ...
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WO/2001/051994A1 |
A polymer system comprised of a plurality of organic aryl molecules dissolved, mixed or blended into a polymer matrix to produce a polymer system. The polymer system is characterized in that subsequent to irradiation it becomes electrica...
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WO/2001/051995A1 |
A photoconductor comprises a substrate and at least one layer. The at least one layer is selected from the group consisting of charge transfer layers comprising a charge transfer molecule, polycarbonate and a first polyaryl ether selecte...
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WO/2001/050199A1 |
Electrophotographic photoreceptors containing a charge generator composition comprising both a sandwich-type metal bisphthalocyanine compound of the general formula (I) Pc=M1=Pc; having a primary particle diameter of 1$g(m) µ or below a...
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WO/2001/049806A1 |
The present invention relates to electronic devices comprising an organic compound acting to inject or transport holes with p-type semi-conducting characteristics. The present invention provides for electronic devices comprising at least...
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WO/2001/046757A1 |
The invention features organic photoreceptors that include a charge transport compound having formula (1) where X is an N-alkyl-substituted carbazole, an N-aryl-substituted carbazole, or a p-(N, N-disubstituted)arylamine; Ar is a group h...
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WO/2001/031400A1 |
This invention relates to the photo-sensitive thermoplastic top-layer of optical media for registration of holograms, where the media consists of three transparent layers where the bottom layer is a glass substrate, the mid layer is an e...
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WO/2001/020421A1 |
The device for coating an element (1) by means of a swab (2) impregnated with a coating composition comprises: a mobile carriage (11) bearing the swab (2), said carriage (11) being movable along a guiding path (9); a means (14) for pushi...
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WO/2001/009252A1 |
The invention relates to a new polymorphic pigmentary form of phthalocyanines, the preparation therof by salt-milling a phthalocyanine crude in the presence of water-soluble neutral organic liquid, and some uses thereof. These phthalocya...
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WO/2001/007526A1 |
Charge generation layers comprise a type I polymorph of titanyl phthalocyanine prepared by pre-milling a type IV polymorph in a media mill. Dual layer photoconductors comprise the charge generation layer in combination with a substrate a...
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WO/2000/078843A1 |
The invention relates to a process for isolating, from a polymer comprising repeating units which are individually of Formula (X) in which Y is P or N, Ar?1¿ & Ar?2¿ are bivalent aromatic groups, Ar?3¿ is a monovalent aromatic group, ...
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WO/2000/075731A1 |
A photoconductor for use in electrophotographic reproduction devices is disclosed. The photoconductor provides simultaneous improvement in both photoreceptor sensitivity and fatigue, while also providing higher charge voltage, lower resi...
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WO/2000/065409A2 |
The invention refers to an optical storage medium from which information can be read out and/or into which information can be recorded with a light beam (6), said optical storage medium comprising one or more base members (1) bearing on ...
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WO/2000/065586A1 |
The invention relates to an optical storage medium from which information can be read out and/or into which information can be recorded with a light beam, said optical storage medium comprising one or more base members bearing on the sid...
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WO/2000/063748A1 |
A photoconductor for use in electrophotographic reproduction devices is disclosed. This photoconductor exhibits reduced room light and cycling fatigue without any corresponding negative impact on the sensitivity of the photoconductor. Th...
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WO/2000/060014A1 |
Novel phthalocyanine compounds which have absorption in a near-infrared region of from 700 to 1,000 nm and reduced absorption in the visible region and hence are suitable for use in a near-infrared absorption filter for plasma displays, ...
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WO/2000/058789A1 |
The present invention discloses a high weight percent of silicone within the silicone-urea block polymer for use with or as a dielectric layer material for electrostatic printing. The high weight percent comprises between about 66 and ab...
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WO/2000/054982A1 |
An information recording medium having such a recording material layer on a substrate where reversible phase transition between electrically or optically detectable states can be caused by electric energy or electromagnetic energy. The r...
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WO/2000/050961A1 |
An endless belt (10) for use in digital imaging systems is provided having uniform edge to edge flatness, and precise circumferential and edge to edge thickness. The layers comprising the belt may be tailored as desired for use in either...
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WO/2000/050957A1 |
Multilayer articles (including imaging elements) have improved adhesion between a polymeric support and film-forming polymer-containing layers disposed thereon. This improved adhesion is provided by including in the adhesion-promoting la...
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