Photo Conductor Overcoat Comprising Radical Polymerizable Charge Transport Molecules and Hexa-Functional Urethane Acrylates

摘要

A method of preparing a photoconductor drum having an overcoat layer is provided. The photoconductor drum is used in an electrophotographic image forming device. The photoconductor drum is prepared from a curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties, thus protecting the photoconductor drum from damage and extending its useful life.

主权项

1. A method of preparing a photoconductor comprising:
providing an electrically conductive substrate; preparing a charge generation layer dispersion; coating the charge generation layer dispersion onto the electrically conductive substrate to form a charge generation layer; preparing a charge transport formulation; coating the charge transport formulation over the charge generation layer to form a charge transport layer; preparing an overcoat layer formulation including a charge transport molecule at least one radical polymerizable functional group, a urethane acrylate resin having at least six radical polymerizable functional groups, an organic solvent and a photoinitiator; coating the overcoat layer formulation over the charge transport layer; and curing the overcoat layer formulation to form a photoconductor having an overcoat layer over the charge transport layer and the charge generation layers.