Electrophotographic recording elements with hydrolyzed silane layer

Claim 1

An electrophotographic recording element for electrophotographic offset printing plates which comprises: an anodically oxidized and mechanically, chemically and/or electrochemically pretreated aluminum base; a photoconductive layer on the aluminum base, and a thin layer formed of a hydrolyzed or hydrolzyed and condensed silane compound or compounds and having hydrophilic properties between the aluminum base and the photoconductive layer, wherein the silane compound has the formula (1) X-(CH.sub.2).sub.y -Si(R.sup.1).sub.n (OR.sub.2).sub.3-n ( 1) where R 1 and R 2 are identical or different and are each alkyl of 1 to 9 carbon atoms or aryl of 6 to 12 carbon atoms, X is one of the radicals ##STR5## R 3 is hydrogen, alkyl of 1 to 9 carbon atoms, a carboxylic acid radical of 1 to 9 carbon atoms or a carboxylic anhydride ring formed from this carboxylic acid radical and the ##STR6## radical bonded to R 3 , and R 4 and R 5 are identical or different and are each alkyl of 1 to 9 carbon atoms or aryl of 6 to 12 carbon atoms, R 6 is hydrogen, alkyl of 1 to 9 carbon atoms or aryl of 6 to 12 carbon atoms, Ar is arylene of 6 to 12 carbon atoms, Hal is chlorine or bromine, Z is hydrogen or an alkali metal, y is an integer from 1 to 4 and n is 0, 1 or 2.