摘要:
A photoconductive imaging member comprised of a substrate, a photogenerating layer, and thereover a charge transport layer comprised of a charge transport component or components, a polymer binder and metal oxide particles, wherein said metal oxide particles contain or are attached with or to a silane or a siloxane, or alternatively a polytetrafluoroethylene.
摘要:
A silicone overcoat (SOC) layer having a crosslinked polysiloxane composition comprising a perfluoropolyether segment are disclosed. The polysiloxane composition is the product of the hydrolysis and condensation of a SOC formulation comprising a perfluoropolyether compound, an aromatic silicon-containing compound, and a silicon-containing hole transport compound. An electrophotographic imaging member having such a SOC layer has improved properties.
摘要:
A process of treating metal oxide nanoparticles that includes mixing metal oxide nanoparticles, a solvent, and a surface treatment agent that is preferably a silane or siloxane is described. The treated metal oxide nanoparticles are rendered hydrophobic by the surface treatment agent being surface attached thereto, and are preferably dispersed in a hydrophobic aromatic polymer binder of a charge transport layer of a photoreceptor, whereby π—π interactions can be formed between the organic moieties on the surface of the nanoparticles and the aromatic components of the binder polymer to achieve a stable dispersion of the nanoparticles in the polymer that is substantially free of large sized agglomerations.
摘要:
A crosslinked siloxane composite overcoat for electrophotographic photoreceptors, containing at least one siloxane-containing compound, a resin and metal oxide particles; photoreceptors containing the crosslinked siloxane composite overcoat; and image process cartridge and image forming apparatuses containing photoreceptors containing the crosslinked siloxane composite overcoat.
摘要:
An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR′)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R′ represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
摘要:
A process including: forming a first chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidone (NMP) to form a ClGaPc (NMP) Type-I product; forming a second chlorogallium phthalocyanine in dimethyl sulfoxide (DMSO) to form a ClGaPc (DMSO) Type-I product; separately dry milling and then wet treating the Type-I products to form respective Type-II products; blending the Type-II products together along with a resin to form a coating mixture; and coating the mixture to form a charge generator layer in an electrostatographic imaging article.
摘要:
A process for the preparation of hydroxygallium phthalocyanines Type A, Type B, Type C, or Type D, which comprises contacting Type V hydroxygallium phthalocyanine with an alcohol.
摘要:
Disclosed is an improved process for the preparation of squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a composition selected from the group consisting of phenols and phenol squaraines, in the presence of an aliphatic alcohol, and an optional azeotropic substance.
摘要:
A silicone overcoat (SOC) layer having a crosslinked polysiloxane composition comprising a perfluoropolyether segment are disclosed. The polysiloxane composition is the product of the hydrolysis and condensation of a SOC formulation comprising a perfluoropolyether compound, an aromatic silicon-containing compound, and a silicon-containing hole transport compound. An electrophotographic imaging member having such a SOC layer has improved properties.
摘要:
Overcoat layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The overcoat layers include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the overcoat layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.