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US20090087762 PHOTOCONDUCTORS CONTAINING TRIMELLITIMIDE ESTERS  
The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains trimellitimide esters additives.
US20110159420 GALLIUM PHTHALOCYANINE COMPOUND, GALLIUM PHTHALOCYANINE COMPOSITE PIGMENT, METHOD FOR PREPARING GALLIUM PHTHALOCYANINE COMPOSITE PIGMENT, AND ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR  
To provide a gallium phthalocyanine compound, which is expressed by the following general formula (I) where R1 to R32 are each independently a hydrogen atom, an alkoxy group, an alkylthio group,...
US20080076916 Organic photosensitive pigment  
Processes for making organic photosensitive pigments for charge generating layers of imaging members. The pigments may include titanyl phthalocyanine. The pigments may be synthesized through a...
US20080305419 Titanylphthalocyanine comprising specific polymorph and method for producing thereof, and electrophotographic photoreceptor comprising charge generating material thereof  
The present invention relates to a titanylphthalocyanine represented by the formula (1): comprising a polymorph having a peak at a Bragg angle (2θ±0.2°) in X-ray diffraction spectrum with CuK...
US20070219375 Novel Compound and Organic Electronic Device Using the Same  
Disclosed is a novel compound suitable as an electron transporting material for organic electronic devices. Also disclosed is an organic electronic device using such a compound which has higher...
US20060286468 Hydroxygallium phthalocyanines  
Methods for preparing Type V hydroxygallium phthalocyanine are provided.
US20060105254 Processes for the preparation of high sensitivity titanium phthalocyanines photogenerating pigments  
A process for preparing a high sensitivity titanyl phthalocyanine (TiOPc) pigment includes dissolving a Type I TiOPc in a suitable solvent, precipitating an intermediate TiOPc pigment by quenching...
US20070111122 Photoreceptor with mixed crystalline phthalocyanine  
The present invention provides an electrophotographic element. The element has a charge generation layer including binder and, dispersed in the binder, a physical mixture of (1) a high speed...
US20080305418 MONOLAYER TYPE PHOTOCONDUCTOR AND IMAGE FORMING DEVICE  
Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming...
US20080014520 Organic photoreceptor for short wavelengths and electrophotographic imaging forming apparatus employing the organic photoreceptor  
An organic photoreceptor and an electrophotographic image forming apparatus employing the organic photoreceptor are provided, where the organic photoreceptor has high photosensitivity with respect...
US20080305414 Single layered photoconductors containing needle shaped particles  
A photoconductor that, for example, includes a supporting substrate, and a single layer thereover comprised of at least one photogenerating pigment, at least one charge transport component, needle...
US20080268357 Phthalocyanine Composition and Photoconductive Material, Electrophotographic Photoreceptor Cartridge, and Image-Forming Apparatus Each Employing the Composition  
A phthalocyanine composite with high sensitivity and low environmental dependence is provided. It comprises both a at least one phthalocyanine compound expressed by general formula (1) and a at...
US20150207083 BENZIMIDAZO[1,2-A]BENZIMIDAZOLE DERIVATIVES FOR ELECTRONIC APPLICATIONS  
A compound of the general formula a process for the production of the compound and its use in electronic devices, especially electroluminescent devices. Improved efficiency, stability,...
US20080026310 Oxo-titanylphthalocyanine crystal, method for producing the same, and electrophotographic photoreceptor  
The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and...
US20150234298 SOLUTION OF GALLIUM PHTHALOCYANINE METHOD FOR PREPARING THE SAME METHOD FOR PRODUCING GALLIUM PHTHALOCYANINE CRYSTAL METHOD FOR PURIFYING COMPOSITION CONTAINING GALLIUM PHTHALOCYANINE AND METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER  
A solution of a gallium phthalocyanine contains a compound of formula (1) and a gallium phthalocyanine of formula (2), H2N—CH2—R1—CH2—NH2 (1) wherein R1 represents a single bond, or a substituted...
US20140212804 SOLUTION OF GALLIUM PHTHALOCYANINE METHOD FOR PREPARING THE SAME METHOD FOR PRODUCING GALLIUM PHTHALOCYANINE CRYSTAL METHOD FOR PURIFYING COMPOSITION CONTAINING GALLIUM PHTHALOCYANINE AND METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER  
A solution of a gallium phthalocyanine contains a compound of formula (1) and a gallium phthalocyanine of formula (2), H2N—CH2—R1—CH2—NH2 (1) wherein R1 represents a single bond, or a substituted...
US20070105032 Titanyl phthalocyanine crystal and manufacturing method thereof and electrophotographic photoreceptor and electrophotographic imaging apparatus using the photoreceptor  
A titanyl phthalocyanine crystal has a major absorption peak at a wavelength of 780 nm±10 nm in the visible-infrared absorption spectrum and a minor absorption peak has an intensity of ¾ or less...
US20060003243 Positively-charged electrophotographic organophotoreceptor, and method of manufacture  
A composition for a charge generating layer of a positively-charged electrophotographic organophotoreceptor and a method of manufacturing same. The charge generating layer composition for the...
US20140356772 TERPENE POLYCARBONATE CONTAINING PHOTOCONDUCTORS  
A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a...
US20130149639 AMMONIUM ALKYLPHOSPHATE CONTAINING INTERMEDIATE TRANSFER MEMBERS  
An intermediate transfer member that includes a mixture of a polyamideimide, an ammonium alkylphosphate, an optional polysiloxane, and an optional conductive filler.
US20090245867 ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE, AND IMAGE FORMING APPARATUS  
To provide an electrophotographic photoreceptor showing suitable electric characteristics, capable of forming a favorable image even after repeated use for long term and capable of forming a high...
US20070122725 Method for preparing oxytitanium phthalocyanine chartge generating material and apparatus for preparing the same  
Disclosed herein are a method and an apparatus for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of homogeneously mixing an oxytitanium...
US20070111132 Method for preparing oxytitanium phthalocyanine charge generating meterial and the new-type oxytitanium phthalocyanine charge generating material therefrom  
Disclosed herein is a method for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of mixing 30-100 wt % sulfuric acid and an oxytitanium...
US20060210896 Aromatic amine-based charge transport materials having an N,N-divinyl group  
Improved charge transport materials having the formula: where R1, R2, R3, R4, R5, and R6 comprise, each independently, H or an organic group; and Y comprises an aromatic group, such as an aryl...
US20050019685 Naphthalenetetracarboxylic diimide derivatives and electrophotographic photoconductor containing the same  
A naphthalenetetracarboxylic diimide derivative having formula (1) below, in which flexible ether groups are bonded to nitrogen atoms of diimide, is utilized to yield an effective solubility in...
US20090047589 ELECTROPHOTOGRAPHIC PHOTORECEPTOR  
Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a...
US20060183043 Electrophotographic photoreceptor containing pyridine-substituted asymmetric naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus  
An electrophotographic photoreceptor includes a pyridine-substituted asymmetric naphthalenetetracarboxylic acid diimide derivative. The pyridine-substituted asymmetric naphthalenetetracarboxylic...
US20050277039 Hydrazone-based charge transport materials having a bicyclic heterocyclic ring  
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a...
US20060286474 Electrophotographic photosensive element and image forming device provided with it  
An electrophotographic photoreceptor which is excellent in the cleaning property and does not deteriorates the image quality for the formed images during long time use, and capable of forming...
US20090196654 ELECTROPHOTOGRAPHIC PHOTORECEPTOR CONTAINING MIXTURE OF BISPHTHALOCYANINE-BASED COMPOUND AND PHTHALOCYANINE-BASED COMPOUND AND ELECTROPHOTOGRAPHIC IMAGING APPARATUS EMPLOYING THE ELECTROPHOTOGRAPHIC PHOTORECEPTOR  
An electrophotographic photoreceptor includes an electrically conductive substrate, and a photosensitive layer formed on the electrically conductive substrate, in which the photosensitive layer...
US20080199793 Electrophotographic photoreceptor having excellent electrical properties and image quality and their high stabilities and electrophotographic imaging apparatus employing the same  
An electrophotographic photoreceptor is provided including an undercoat layer and a photosensitive layer that are sequentially formed on an electrically conductive substrate, wherein the undercoat...
US20060154159 Electrophotographic photoreceptor and electrophotographic imaging apparatus  
The invention is directed to an electrophotographic photoreceptor, and an electrophotographic cartridge and an electrophotographic imaging apparatus including the electrophotographic...
US20110268472 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS  
To provide an electrophotographic photosensitive member that can reproduce good images with less positive ghost and also has a good photosensitivity, the electrophotographic photosensitive member...
US20090202274 COATING FLUID FOR PHOTOSENSITIVE-LAYER FORMATION, PROCESS FOR PRODUCING THE SAME, PHOTORECEPTOR PRODUCED WITH THE COATING FLUID, IMAGE-FORMING APPARATUS EMPLOYING THE PHOTORECEPTOR, AND ELECTROPHOTOGRAPHIC CARTRIDGE EMPLOYING THE PHOTORECEPTOR  
A coating fluid for photosensitive-layer formation having high productivity and stability and a process thereof are provided. Also provided are a high-performance electrophotographic photoreceptor...
US20070248901 ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE  
An electrophotographic photoconductor contains a photosensitive layer and a conductive substrate, wherein the photosensitive layer is disposed on the conductive substrate, and the photosensitive...
US20070218379 Electrophotographic photoconductor and image forming apparatus  
The present invention provides a monolayer type electrophotographic photoconductor which can effectively suppress the generation of an exposure memory and exhibits high sensitivity and an image...
US20140212801 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS  
A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or...
US20140065530 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS  
A photosensitive layer of an electrophotographic photosensitive member includes a phthalocyanine pigment and a specific dicyanoethylene compound. Alternatively, the photosensitive layer and/or an...
US20100203436 PHOTOCONDUCTOR SYSTEM FOR ELECTROPHOTOGRAPHIC DEVICE  
An electrophotographic photoconductor system for use in an electrophotographic device and method of using the same. The electrophotoconductor system comprises an electroconductive support, a...
US20070059618 Electrophotographic photoconductor, and image forming apparatus, process cartridge and image forming method using the same  
An object of the present invention is to provide an image forming apparatus containing an electrophotographic photoconductor, a charging unit, an exposing unit, a developing unit, a transfer unit...
US20160139516 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS  
An electrophotographic photosensitive member including a support, and a charge generating layer and a charge transporting layer on the support, wherein the charge generating layer includes a...
US20160131984 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS  
An electrophotographic photosensitive member includes a charge transport layer containing (α) a charge transporting compound, (β) a binding resin in a proportion in the range of 50% by mass to...
US20160124329 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND CHLOROGALLIUM PHTHALOCYANINE CRYSTAL AND METHOD FOR PRODUCING THE SAME  
An electrophotographic photosensitive member includes a support and a photosensitive layer in this order. The photosensitive layer contains a chlorogallium phthalocyanine crystal represented by...
US20160124326 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND CHLOROGALLIUM PHTHALOCYANINE CRYSTAL AND METHOD FOR PRODUCING THE SAME  
An electrophotographic photosensitive member includes a support and a photosensitive layer in this order. The photosensitive layer contains a chlorogallium phthalocyanine crystal. The...
US20160124325 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND CHLOROGALLIUM PHTHALOCYANINE CRYSTAL AND METHOD FOR PRODUCING THE SAME  
An electrophotographic photosensitive member includes a support and a photosensitive layer in this order. The photosensitive layer contains a chlorogallium phthalocyanine crystal obtained by...
US20150370181 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, MANUFACTURING METHOD OF ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND A SOLID SOLUTION AND MANUFACTURING METHOD OF A SOLID SOLUTION  
The present invention provides an electrophotographic photosensitive member which can output images with reduced image defects due to ghosting not only under a normal temperature and normal...
US20150362850 HYDROXYGALLIUM PHTHALOCYANINE CRYSTAL, ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS  
The present invention provides a novel hydroxygallium phthalocyanine crystal and an electrophotographic photosensitive member capable of outputting an image with few failures due to a ghost...
US20150362849 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR PRODUCING THE SAME, ELECTROPHOTOGRAPHIC APPARATUS AND PROCESS CARTRIDGE, AND CHLOROGALLIUM PHTHALOCYANINE CRYSTAL  
A photosensitive layer of an electrophotographic photosensitive member contains a particular chlorogallium phthalocyanine crystal in which an organic compound is contained. The organic compound...
US20150362848 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS  
An electrophotographic photosensitive member can provide images in which black spots and fogging are suppressed and density unevenness due to coating unevenness of the charge generation layer is...
US20150346617 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, MANUFACTURING METHOD OF ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND PHTHALOCYANINE CRYSTAL AND MANUFACTURING METHOD OF PHTHALOCYANINE CRYSTAL  
The present invention provides: an electrophotographic photosensitive member which reduces image defects due to ghosting not only under a normal temperature and normal humidity environment but...

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