NOVEL CHARGE TRANSPORTING SYSTEMS
Original Publication Date: 1994-Oct-31
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Disclosed is a charge transporting polymer comprising a charge transporting backbone and charge transporting pendant groups. The charge transporting polymer is useful in electrophotographic imaging members of printing and copying machines. The charge transfer polymer is particularly useful in organic belt type photoreceptor members. The backbone of the transport polymer is comprised of a polysilicone polymer as shown in Figure 1. The polysilicone copolymer contains substitutents X, for example, the triphenylamine compound as shown in Figure 2, the biphenyl diamine compound shown in Figure 3, or the carbazol compound shown in Figure 4. The charge transport active pendant groups selected from those indicated by Figures 2, 3, and 4 enable charges to hop between the pendant groups of a given chain and between adjacent chains. The backbone polymer plays a secondary charge transport role. The charge transporting polymers can be optionally dispersed in inert binder resins. The charge transport active molecules incorporated into the backbone or as pendant groups on the silicone polymers provide for charge transport both within the polymer backbone as well as between substituted pendant groups.