Appeal No. 95-3947
Application 07/812,530
APPENDIX
10. A charge transport dual layer comprising:
a first transport layer comprising a first charge-transporting polymer including charge
transporting segments and inactive segments, wherein the first charge-transporting polymer
comprises a polymeric arylamine compound; and
a second transport layer deposited on the first transport layer, the second transport layer
comprising a second charge-transporting polymer including charge transporting segments and
inactive segments, wherein the second charge-transporting polymer comprises a polymeric
arylamine compound;
wherein the weight percent of charge transporting segments in the first charge transporting
polymer is in the range from about 30 to about 90 weight percent of the total polymer weight and
wherein the weight percent of charge transporting segments in the second charge transporting
polymer is in the range from 5 to about 30 weight percent of the total polymer weight; and
wherein the second transport layer is thinner than the first transport layer.
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Last modified: November 3, 2007