摘要:
An electrophotographic imaging member is improved in light shock resistance by including in the charge transport layer a light shock resisting additive of triethanolamine, morpholine, an imidazole or mixtures thereof. The imaging member preferably has a charge generating layer containing hydroxygallium phthalocyanine, alkoxygallium phthalocyanine and mixtures thereof as the photogenerating particles. The method of rendering an imaging member including such a charge generating layer acceptably resistant to light shock includes forming a charge transport layer in association with the charge generating layer to contain the light shock resisting additive of triethanolamine, morpholine, an imidazole or mixtures thereof.
摘要:
An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer including charge transporting molecules dispersed in a first polymer binder, and an overcoat layer including a triphenyl methane molecule dispersed in a second polymer binder, the second polymer binder being soluble in a solvent in which the first polymer binder is insoluble and the charge transport layer being substantialy free of any triphenyl methane molecules. The overcoat layer may also contain a charge transport molecule. The device may also include any suitable optional charge blocking, adhesive and other sub layers. This electrophotographic imaging member is fabricated by forming on a charge generating layer a first coating comprising charge transporting molecules dispersed in a solution of a first polymer binder dissolved in a first solvent, drying the coating to remove the solvent to form a substantially dry charge transport layer, forming on the charge transport layer a second coating comprising triphenyl methane molecules and charge transporting molecules dispersed in a solution of a second polymer binder dissolved in a second solvent, the first polymer binder being insoluble in the second solvent and the charge transport layer being substantialy free of any triphenyl methane molecules, and drying the second coating to remove the second solvent to form a substantially dry overcoat layer. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.
摘要:
Disclosed is imaging member comprised of a supporting substrate, a blocking layer of hydrogenated amorphous silicon with dopants, a hydrogenated amorphous silicon photoconductive layer, a first overcoating layer of nonstoichiometric silicon nitride with from between 5 to 33 atomic percent of nitrogen and 95 to 67 atomic percent of silicon, and a second overcoating layer thereover of near stoichiometric silicon nitride with from between 33 to 57 atomic percent of nitrogen, and 67 to 43 atomic percent of silicon.
摘要:
An electrophotographic imaging member fabricated by forming on a charge generating layer a first coating including charge transporting molecules dispersed in a solution of a first polymer binder dissolved in a first solvent, drying the coating to remove the solvent to form a substantially dry charge transport layer, forming on the charge transport layer a second coating including charge transporting molecules and a chemical stabilizer additive selected from the group consisting of a nitrone, isobenzofuran, hydroxyaromatic compound and mixtures thereof molecularly dispersed in an electrically inactive second polymer binder in a solution of a second polymer binder dissolved in a second solvent, the first polymer binder being insoluble in the second solvent, and drying the second coating to remove the second solvent to form a substantially dry overcoat layer. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.
摘要:
A photoresponsive imaging member comprised of a supporting substrate; a barrier layer of hydrogenated amorphous silicon with dopants therein; a photoconductive layer of hydrogenated amorphous silicon; a first overcoating layer of nonstoichiometric silicon nitride; and a second overcoating layer of a silicone-silica hybrid polymer.
摘要:
An electrophotographic imaging member including a charge generating layer, a charge transport layer and an overcoating layer, the transport layer including a charge transporting aromatic diamine molecule in a polystyrene matrix and the overcoating layer including a hole transporting hydroxy arylamine compound having at least two hydroxy functional groups and a polyamide film forming binder capable of forming hydrogen bonds with the hydroxy functional groups of the hydroxy arylamine compound. This imaging member is utilized in an imaging process.
摘要:
An electrophotographic imaging member including a charge generating layer and a charge transport layer, the charge transport layer including a charge transporting small molecule dissolved or molecularly dispersed in a film forming charge transporting polymer comprising charge transporting moieties in the backbone of the film forming charge transporting polymer, the charge transporting moieties having a structure substantially identical to the structure of the charge transporting small molecule, the charge transporting small molecule having an ionization potential substantially identical to the ionization potential of the polymer, and the charge transport layer being substantially free of electrically inactive film forming binder. This imaging member may be employed in an electrophotographic imaging process.
摘要:
An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of a polycarbonate resin material having dispersed therein from about 25 to about 75 percent by weight of one or more diamine compound having the general formula: ##STR1## wherein X.sub.1 and X.sub.2 are independently selected from the group consisting of a lower alkyl group having from 1 to about 4 carbon atoms, chlorine in the ortho, meta or para position, a para phenyl group and combinations thereof.
摘要:
An electrophotographic imaging member comprisinga supporting substrate,an undercoat layer doped with an donor moleculea charge generating layer comprisingphotoconductive pigment particles,film forming binder andan donor molecule dissolved in the film forming binder, anda charge transport layer,the charge generating layer being located between the substrate and the charge transport layer. A process for fabricating this imaging member is also disclosed.
摘要:
An electrophotographic imaging member including a charge generation layer and a hole transport layer, at least the charge generation layer or charge transport layer comprising a polyarylamine polymer represented by the following formula: ##STR1## wherein: n is between about 5 and about 5,000p is between about 5 and about 5,000X' and X" are independently selected from a group having bifunctional linkages, andQ is a divalent group derived from certain hydroxy terminated arylamine reactants.