Photoconductive composition and elements comprising two different compounds having a dioxaborin nucleas on a derivative thereof

A photoconductive element comprising a support and a photoconductor composition comprising:

• (a) an electron donor comprising a triarylamine component and sensitizing amounts of
• (b) a first electron acceptor having a structure selected from the group consisting of:
• ##STR50## wherein:
• R.sub.1 and R.sub.2 each independently represents hydrogen, alkyl, aryl or taken together with the carbon atom to which they are attached form a fused mono- or polynuclear carbocyclic group having 6 to 10 carbon atoms or a fused heterocyclic group selected from pyran-4-one, thiopyran-4-one, thiophene and furane;
• A.sub.1 represents substituted aminoaryl, alkylamino, julolylidine or aryl;
• A.sub.2 represents a nitrogen-containing heterocyclic nucleus;
• (c) a second electron acceptor selected from the group consisting of:
• ##STR51## wherein:
• R.sub.3, R.sub.4 and R.sub.5 each independently represents hydrogen, hydroxy, alkyl, aryl, furyl, alkoxy, thienyl or trihaloalkyl, or
• R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5, taken together with the carbon atoms to which they are attached represent fused thiopyran, or a mono- or polynuclear carbocyclic group having 6 to 10 carbon atoms;
• R.sub.7 represents the atoms necessary to form a member selected from the group consisting of pyran, thiopyran and benzopyran;
• Y.sub.1 and Y.sub.2 represent fluoro or
• Y.sub.1 and Y.sub.2 taken together with B form a 1,3,2-dioxaborin nucleus;
• Z represents O, and ##STR52## wherein R.sub.6 represents aryl or R.sub.6 together with ##STR53## represents a fused benzothiazolene nucleus.