Xerox Corporation

Houy Jen Yuh

Timothy J Fuller

Satchidanand Mishra

Anthony M Horgan

Markus Rudolf Silvestri

Dale S Renfer

Kenny-Tuan Dinh

John F Yanus

Yuhua Tong

Kathleen M Carmichael

Edward F Grabowski

Robert C U Yu

Robert C Yu

Richard L Post

John R Lambie

Geoff Foley

Jack Yanus

Geoffrey Mt Foley

Yuh Tong

An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein the upper or additional transport layer(s) comprise a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be the same or different from that included in the additional charge transport layers. The charge transport compound in one or more of the layers is dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.

Imaging members

An imaging member having a charge transport layer with multiple regions or layers is provided. The charge transport layer includes at least two charge transport layers coated from solutions of different components and concentrations, wherein the second (top) transport layer comprises a lower concentration of different charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the second (top) charge transport layer is a high mobility hole transport compound. The charge transport compound in each layer is dissolved or molecularly dispersed in an electrically inactive film forming polymer to form a solid solution. In such a construction, the resulting dual charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.

Imaging member having a dual charge transport layer

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Pittsford, NY, United States of America

Houy Jen Yuh