Patent ID: 6187493
Filing Date: 2001-02-13
Classification: G03G

Abstract:
An electrophotosensitive material comprising a conductor substrate and a photosensitive layer provided on the conductive substrate, the photosensitive layer comprising:(I) a binding resin comprising a polyester resin which is a linear polymer obtained by using at least one dihydroxy compound selected from the group consisting of dihydroxy compounds represented by the formulas: ##STR69##wherein R.sup.1 is an alkylene group having 2 to 4 carbon atoms, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an aryl group or an aralkyl group, ##STR70##wherein R.sup.1 is an alkylene group having 2 to 4 carbon atoms, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an aryl group or an aralkyl group, and n is an integer of not less than 2, and ##STR71##wherein R.sup.1 is an alkylene group having 2 to 4 carbon atoms, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an aryl group or an aralkyl group, and R.sup.6 and R.sup.7 are the same or different and indicate an alkyl group having 1 to 10 carbon atoms;(II) an electric charge generating material; and(III) at least one electron transferring material selected from the group consisting of the compounds (ET6), (ET7) and (ET14) represented by the formulas: ##STR72##wherein G is an integer of 1 or 2, ##STR73##wherein R.sup.81 is an alkyl group; and H is an integer of 1 to 4, and ##STR74##wherein R.sup.92 is a hydrogen atom, an alkyl group, an aryl group, an alkoxy group or an aralkyl group.