Imaging members
AssigneeXerox Corporation
InventorsJin Wu, Nancy Lynn Belknap, Jennifer Y. Hwang, Liang-bih Lin, Yuhua Tong
Life of this patent
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Abstract
An undercoat composition and resulting layer formed therefrom, is disclosed which finds particular application in multilayered photoreceptors, such as are used in xerographic printing systems. The undercoat composition comprises an n-type pigment and a binary binder comprising an isocyanate and a phenolic resin.
Claims28
An imaging member comprising:
- an optional supporting substrate,
- an optional electrically conductive layer;
- a hole blocking layer;
- a charge generating layer;
- a charge transport layer;
- and
- an optional overcoat layer, wherein the hole blocking layer is formed from a composition comprising a binary binder and an n-type pigment, and wherein the binary binder comprises a blocked isocyanate and a phenolic resin.
A hole blocking layer for use in a multilayered photoreceptor, wherein said layer is formed from a composition free of silica, and wherein the composition comprises a phenolic resin, a metal oxide, and a blocked isocyanate.
A hole blocking layer for use in a multilayered photoreceptor, wherein said layer is formed from a composition comprising a metal oxide, and a binary binder comprising a phenolic resin and a blocked isocyanate.
A method of forming a hole blocking layer, said method comprising:
- forming a dispersion of a phenolic resin, a metal oxide, and a blocked isocyanate in a liquid carrier;
- depositing a layer of said dispersion on a substrate;
- heating said layer to form said undercoat layer.
Dependencies are inferred from the claim text.