Crosslinkable urethane acrylate charge transport molecules for overcoat
AssigneeLexmark International, Inc.
InventorScott Daniel Reeves
Life of this patent
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Abstract
An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a urethane methacrylate functional charge transport molecule, and a photoinitiator. The urethane acrylate functional charge transport molecule is a reaction product of hydroxyl functional charge transport molecule and a monomer having an isocyanate group and an acrylate group. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its useful life.
Claims11
An overcoat layer for an organic photoconductor drum, the overcoat layer prepared from a curable composition comprising:
- a urethane acrylate functional charge transport molecule that is a reaction product of hydroxyl functional charge transport molecule and a monomer having an isocyanate group and an acrylate group;
- and
- a photoinitiator.
An organic photoconductor drum comprising:
- a support element;
- a charge generation layer disposed over the support element;
- a charge transport layer disposed over the charge generation layer;
- and
- a protective overcoat layer formed as an outermost layer of the organic photoconductor drum, the protective overcoat layer being formed from a curable composition including:
- a urethane methacrylate functional charge transport molecule or urethane acrylate functional charge transport molecule that is a reaction product of hydroxyl functional charge transport molecule and a monomer having an isocyanate group and an acrylate group;
- and
- a photoinitiator.
Dependencies are inferred from the claim text.