| 摘要 |
A high quality hole transport material of a substituted biphenyl diamine, such as N,N,N'N'-tetra(4-methylphenyl)-(1,1'-biphenyl)-4,4'-diamine, where each X is independently selected from -H, alkyl(-CnH2n+1), where n is from 1 to about 10 such as from 1 to about 5 or from 1 to about 6, aralkyl and aryl groups, the aralkyl and aryl groups having, for example, from about 5 to about 30, such as about 6 to about 20 carbon atoms, where the purity of the hole transport material is from about 80 percent to about 100 percent, and when incorporated into a photoreceptor, the photoreceptor discharges from about 85% to about 100% of its surface potential in from 0 to about 40 milliseconds upon being subjected to xerographic charging and exposure to radiant energy of from about 1 ergs/cm2 to about, 5 ergs/cm2. Also disclosed is a photoreceptor containing the same.
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