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Ah-Mee Hor, Mississauga CA

Ah-Mee Hor, Mississauga CA

Patent application numberDescriptionPublished
20080299472Photoconductors - A coating composition that contains a mixture of an alkyl alcohol, a glycol monoether, a charge transport component, a crosslinking component, and at least one hydroxyl containing polymer, and a photoconductor thereof with a supporting substrate, a photogenerating layer, and at least one charge transport layer, and an overcoating layer in contact with and contiguous to the charge transport layer, and which overcoating is comprised of a mixture of an alkyl alcohol, a glycol monoether, an acrylated polyol, a polyalkylene glycol, a crosslinking component, and a charge transport component.12-04-2008
20080299474HIGH QUALITY SUBSTITUTED ARYL DIAMINE AND A PHOTORECEPTOR - A high quality hole transport material of a substituted biphenyl diamine, such as N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine, where each X is independently selected from —H, alkyl(-C12-04-2008
20090130575PHOTORECEPTOR - Disclosed is a photoreceptor including a substrate, a charge generating layer, and a charge transport layer having a tertiary aryl amine charge transport molecule represented by the following general formula05-21-2009
20090197196IMAGING MEMBER AND METHODS OF FORMING THE SAME - The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved imaging member having a charge transport layer comprising a top layer and a bottom layer, wherein the layers have varying concentrations of high quality N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine to provide tunable discharge rate.08-06-2009
20090263737 IMAGING MEMBER AND METHODS OF FORMING THE SAME - The presently disclosed embodiments are directed to an imaging member having an outermost layer formulation that includes wax particles which creates a rough surface morphology for the layer and imparts increased scratch resistance, reduced torque, and improved cleaning performance to the layer. In embodiments, the outermost layer is an overcoat layer used for an improved imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer.10-22-2009
20100015539OVERCOAT LAYER IN PHOTORECEPTIVE DEVICE - The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat layer positioned on the charge transport layer, and a process for preparing the same, where the overcoat layer includes an aromatic polyol binder, a hole transport molecule, and a melamine formaldehyde curing resin.01-21-2010
20100035169CROSSLINKED SILOXANE OUTMOST LAYER HAVING AROMATIC SILICON-CONTAINING COMPOUNDS FOR PHOTORECEPTORS - An aromatic silicon-containing compound has the formula:02-11-2010
20100068636PHOTORECEPTOR PROTECTIVE OVERCOAT LAYER INCLUDING SILICONE POLYETHER AND METHOD OF MAKING SAME - Disclosed is an electrophotographic imaging member including a substrate; a charge generating layer; a charge transport layer with a hole transport material; and a protective overcoat layer having a silicone polyether additive with at least one carbinol function group; a polyol binder; a hole transport material; a curing agent; and an acid catalyst.03-18-2010
20100140593ORGANIC THIN-FILM TRANSISTORS - A thin-film transistor has a semiconducting layer which comprises a halogen-coordinated metal phthalocyanine complex of Formula (I) or Formula (II):06-10-2010
20100151368IMAGING MEMBER - Disclosed is an imaging member comprising a conductive substrate, a photogenerating layer comprising a photogenerating material in contact with the substrate, a first charge transport layer in contact with the photogenerating layer, the first charge transport layer comprising a charge transport material and a polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups, and a second charge transport layer in contact with the first charge transport layer, the second charge transport layer comprising a charge transport material and a hydroquinone antioxidant, wherein the first charge transport layer is situated between the second charge transport layer and the photogenerating layer.06-17-2010
20100151369IMAGING MEMBER - Disclosed is an imaging member comprising a conductive substrate, a photogenerating layer comprising a photogenerating material in contact with the substrate, and a charge transport layer in contact with the photogenerating layer, the charge transport layer comprising a charge transport material, a polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups, and a hydroquinone antioxidant, wherein the photogenerating layer is situated between the charge transport layer and the conductive substrate.06-17-2010
20100151370IMAGING MEMBER - Disclosed is an imaging member comprising a conductive substrate, a photogenerating layer comprising a photogenerating material in contact with the substrate, a first charge transport layer in contact with the photogenerating layer, the first charge transport layer comprising a charge transport material and an organic phosphate or organic phosphonite antioxidant, and a second charge transport layer in contact with the first charge transport layer, the second charge transport layer comprising a charge transport material and a hydroquinone antioxidant, wherein the first charge transport layer is situated between the second charge transport layer and the photogenerating layer.06-17-2010
20100151371IMAGING MEMBER - Disclosed is an imaging member comprising a conductive substrate, a photogenerating layer comprising a photogenerating material in contact with the substrate, and a charge transport layer in contact with the photogenerating layer, the charge transport layer comprising a charge transport material, an organic phosphite or organic phosphonite antioxidant, and a hydroquinone antioxidant, wherein the photogenerating layer is situated between the charge transport layer and the conductive substrate.06-17-2010
20100221044APPARATUS AND METHODS FOR SUPPRESSING PHOTORECEPTOR IMAGE GHOST - The presently disclosed embodiments are directed to charging devices which produce a negative corona. The present embodiments pertain to the use of a positive charging device, such as a scorotron, after the erase lamp and before negative charging station in the xerographic cyclic to mitigate the undesirable changes in charge transport layer electrical properties that result from exposure to corona while negatively charging the photoreceptor during latent image formation.09-02-2010

Patent applications by Ah-Mee Hor, Mississauga CA