Toner compositions with anionic clay or clay-like charge enhancing additives

A negatively charged toner composition consisting essentially of resin, pigment, and a hydrotalcite charge enhancing additive comprised of metal oxides of the formula Mg.sub.6 Al.sub.2 (OH).sub.16 CO.sub.3.4H.sub.2 O, Mg.sub.4.5 Al.sub.2 (OH).sub.13 (CO.sub.3), Mg.sub.4.5 Al.sub.2 (OH).sub.11 (CO.sub.3).sub.0.8 O.sub.0.2, or mixtures thereof.

A negatively charged toner composition comprised of resin particles, pigment particles, and a hydrotalcite comprised of layered double hydroxides or mixed metal hydroxides of the general formula

• M.sub.a.sup.2 +M.sub.b.sup.3 +(OH).sub.2a +.sub.2b (X.sup.n-).sub.2/n .multidot.xH.sub.2 O
• wherein M.sup.2+ is Mg.sup.2+, Fe.sup.2+, Co.sup.2+, Ni.sup.2+, Zn.sup.2+, and the like, M.sup.3+ may be Al.sup.3+, Cr.sup.3+, or Fe.sup.3+ ;
• and X is an of Cl.sup.-, Br.sup.-, I.sup.-, NCS.sup.-, N.sub.3.sup.-, SO.sub.4.sup.2-, NO.sub.3.sup.2-, CO.sub.3.sup.2-, PO.sub.4.sup.3-, salicylate, lauryl sulfate, dodecylsulfonate, terephthalate, (Mo.sub.7 O.sub.24).sup.6-, (W.sub.7 O.sub.24).sup.6-, (V.sub.10 O.sub.28).sup.6-, .alpha.-(H.sub.2 W.sub.12 O.sub.40).sup.6-, and .alpha.-(SiV.sub.3 W.sub.9 O.sub.40).sup.7-.