Imaging members containing intermixed polymer charge transport component layer
AssigneeXerox Corporation
InventorsGregory McGuire, Jennifer A. Coggan, Johann Junginger, Nan-Xing Hu, Ah-Mee Hor
Life of this patent
Estimating the term…
Abstract
A photoconductor containing a photogenerating layer, at least one charge transport layer, and a layer in contact with the charge transport layer comprised of a suitable polymer, and wherein the charge transport layer comprises molecules of the formula/structure wherein X represents alkyl.
Claims24
An imaging member consisting essentially of a supporting substrate;
- a photogenerating layer;
- at least one charge transport layer comprised of at least one charge transport component and a polymer binder;
- and a polymer layer in contact with the charge transport layer comprised of a polymer selected from the group consisting of at least one of polycarbonates, polystyrenes, polyarylates, polyesters, polyimides, polysiloxanes, polysulfones, polyphenyl sulfides, polyetherimides, and polyphenylene vinylenes, and wherein said charge transport layer comprises at least one component of the formula/structure
- wherein X represents alkyl;
- wherein said at least one charge transport layer is 1, 2, or 3 layers, and wherein said charge transport layer and said polymer layer are intermixed resulting in the presence of the charge transport component in a gradient concentration from the highest concentration in the bottom of the charge transport layer in a direction that the lowest concentration is on the surface of the polymer layer, and wherein said gradient comprises from about 5 to about 15 percent by weight of said charge transport component on the surface of said polymer layer;
- from about 25 to about 35 percent by weight of said charge transport component in an intermixed region between said polymer layer and said charge transport layer;
- and from about 40 to about 50 percent by weight of said charge transport component at the bottom of said charge transport layer;
- and wherein the concentration gradient is accomplished by diffusing of the charge transport component from the charge transport layer to the polymer layer.
A photoconductor comprised in sequence of a supporting substrate, a photogenerating layer, a charge transport layer and a polymer layer in contact with the charge transport layer, and wherein said charge transport layer is comprised of molecules of N, N,N′,N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine, and a resin binder;
- wherein said polymer is selected from the group consisting of at least one of poly(bisphenol-A carbonate), poly(bisphenol-Z carbonate), and poly(bisphenol-A carbonate)-co-poly(bisphenol-Z carbonate);
- wherein said charge transport layer and said polymer layer are intermixed resulting in the presence of the charge transport component in a gradient concentration from the highest concentration in the bottom of the charge transport layer in a direction that the lowest concentration is on the surface of the polymer layer;
- wherein said gradient comprises from about zero (0) to about 20 percent by weight of said charge transport component on the surface of said polymer layer;
- from about 20 to about 40 percent by weight of said charge transport component in an intermixed region between said polymer layer and said charge transport layer;
- and from about 30 to about 50 percent by weight of said charge transport component at the bottom of said charge transport layer;
- and wherein the concentration gradient is accomplished by diffusing of the charge transport component from the charge transport layer to the polymer layer.
A photoconductor comprised of a photogenerating layer, at least one charge transport layer, and a layer in contact with the charge transport layer comprised of a polymer selected from the group consisting of at least one of a polycarbonate, a polystyrene, a polyarylate, a polyester, a polyimide, a polysiloxane, a polysulfone, a polyphenyl sulfide, a polyetherimide, and a polyphenylene vinylene, and wherein said charge transport layer comprises
- wherein X represents alkyl with from 1 to about 6 carbon atoms, wherein said charge transport layer and said polymer layer are intermixed resulting in the presence of the charge transport component in a gradient concentration from the highest concentration in the bottom of the charge transport layer in a direction that the lowest concentration is on the surface of the polymer layer, and wherein said gradient comprises from about zero (0) to about 20 percent by weight of said charge transport component on the surface of said polymer layer;
- from about 20 to about 40 percent by weight of said charge transport component in an intermixed region between said polymer layer and said charge transport layer;
- and from about 30 to about 50 percent by weight of said charge transport component at the bottom of said charge transport layer;
- and wherein the concentration gradient is accomplished by diffusing of the charge transport component from the charge transport layer to the polymer layer.
Dependencies are inferred from the claim text.