Electrophotographic recording material
AssigneeHoechst Aktiengesellschaft
InventorsJurgen Rochlitz, Richard Lehner
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Abstract
This invention relates to an electrophotographic recording material comprising an electrically conducting carrier and a photoconducting laminate thereon, the latter comprising a base layer and a top layer each containing an organic photoconductor, binder and sensitizer, at least one organic photoconductor being common to both of said top and base layers and the base layer containing a bisazo dyestuff.
Claims7
Electrophotographic recording material comprising an electrically conducting carrier and a photoconducting laminate thereon, the latter comprising a base layer and a top layer each containing the same organic photoconductor and a binder,
- said top layer containing said photoconductor in an amount of about 40 to 60 percent by weight, and said base layer containing said photoconductor in an amount of about 5 to 10 percent by weight, based upon the weight of the respective layer,
- said base layer containing a bisazo dyestuff in an amount in the range of about 20 to 90 percent by weight, based upon the weight of the base layer,
- and said bisazo dyestuff being selected from the group consisting of Diana Blue (C.I. 21,180) having the formula ##STR1## Diana Blue (C.I. 21,180) which is substituted by methy groups instead of methoxy groups and which is a compound corresponding to the formula ##STR2## and Pigment Red 39 (C.I. 21,080) having the formula ##STR3##
Dependencies are inferred from the claim text.