Electrophotographic photoreceptor

Details Electrophotographic photoreceptor Electrophotographic photoreceptor

G - Physics

03

G

G03G 5/04 (2006.01) G03G 5/047 (2006.01) G03G 5/06 (2006.01)

Patent

CA 2165760

ElectroPhotoqraphic photoreceptor The invention is related to an electrophotographic photoreceptor, its preparation, and its use in electrophotography. The instant photoreceptor comprises a conductive substrate and a photosensitive layer containing an organic pigment as a charge generating material, wherein said organic pigment is formed from a soluble organic pigment precursor. Particularly suitable soluble pigment precursors are of formulae (I) or (XIV), A(D1) (D2)x (I) Image (XIV) wherein A represents a chromophore residue which is a perylene, quinacridone, dioxazine, anthraquinone, azo, phthalocyanine, isoindolinone, isoindoline, indigo, quinophthalone or pyrrolopyrrole with 1 to 5 N atoms bound to the D1 and D2 groups, whereby each N atom of A is independently from the other bound to 0, 1 or 2 groups D1 or D2; D1 and D2 are independently a group represented by the general formula Image x is an integer from 0 to 4; L1 and L2 are independently from one other halogen, alkoxy or amino groups, and M2 is two hydrogens or a metal or oxometal with at least two valences; as well as derivatives thereof The instant electrophotographic photoreceptors have hight sensitivity and low residual electric potential and can be obtained without applying any dispersion procedure.

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