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US 7,604,914 B2Granted
Imaging member
AssigneeXerox Corporation
InventorsLiang-bih Lin, Jin Wu, Daniel Levy, Francisco Lopez, Marc Livecchi
Life of this patent
Estimating the term…
Abstract
The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to a photoreceptor undercoat layer that includes polyol and aminoplast resins to improve image quality.
Claims16
An electrophotographic imaging member, comprising:
- a substrate;
- an undercoat layer disposed on the substrate, wherein the undercoat layer further comprises:
- a polyol resin,
- an aminoplast resin, and
- a metal oxide dispersed therein;
- and
- at least one imaging layer formed on the undercoat layer, wherein the polyol resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer and the aminoplast resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer, and the polyol resin is selected from the group consisting of acrylic polyols, polyglycerols and mixtures thereof, and further wherein the metal oxide has a size diameter of from about 5 to about 300 nm and a powder resistance of from about 1×103 to about 6×104 ohm/cm when applied at a pressure of from about 50 to about 650 kg/cm2.
4 more elements
An electrophotographic imaging member, comprising:
- a substrate;
- an undercoat layer disposed on the substrate, wherein the undercoat layer further comprises
- an acrylic polyol resin,
- a melamine-formaldehyde resin, and
- titanium oxide dispersed therein;
- and
- a charge transport layer formed on the undercoat layer, wherein the acrylic polyol resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer and the melamine-formaldehyde resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer.
4 more elements
An image forming apparatus for forming images on a recording medium comprising:
- a) an electrophotographic imaging member having a charge-retentive surface to receive an electrostatic latent image thereon, wherein the electrophotographic imaging member comprises:
- a substrate,
- an undercoat layer disposed on the substrate, wherein the undercoat layer further comprises
- an acrylic polyol resin,
- a melamine-formaldehyde resin, and
- a titanium oxide dispersed therein, and
- at least one imaging layer formed on the undercoat layer, wherein the acrylic polyol resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer and the melamine-formaldehyde resin is present in an amount of from about 5% to about 80% by weight of the total weight of the undercoat layer;
- b) a development component adjacent to the charge-retentive surface for applying a developer material to the charge-retentive surface to develop the electrostatic latent image to form a developed image on the charge-retentive surface;
- c) a transfer component adjacent to the charge-retentive surface for transferring the developed image from the charge-retentive surface to a copy substrate;
- and
- d) a fusing component adjacent to the copy substrate for fusing the developed image to the copy substrate.
8 more elements
Dependencies are inferred from the claim text.