Toner for developing electrostatic latent images and complex compounds containing aluminum usable therein

Claim 2

Negatively chargeable dry toner for developing electrostatic latent images, comprising 100 parts by weight of a binder resin and 0.1 to 10 parts by weight of an aluminum compound of an aromatic hydroxcarboxylic acid which is unsubstituted or substituted with alkyl and/or aralkyl.

Claim 3

Toner of claim 1 which comprises 100 parts by weight of said resin and 0.5 to 5 parts by weight of the aluminum compound.

Claim 4

Negatively chargeable dry toner for developing electrostatic latent images, comprising 100 parts by weight of a binder resin and 0.1 to 10 parts by weight of a charge control agent, said agent being a complex compound of aluminum and optionally alkyl and/or aralkyl substituted aromatic hydroxycarboxylic acid.

Claim 5

Negatively chargeable dry toner for developing electrostatic latent images, comprising 100 parts by weight of a binder resin and 0.1 to 10 parts by weight of a charge control agent, said agent being a complex compound of aluminum and optionally alkyl and/or aralkyl substituted aromatic hydroxycarboxylic acid.

Claim 6

Toner of claim 3 wherein the complex compound is in the form of a complex with a counter ion.

Claim 7

Toner of claim 4 wherein the counter ion is hydrogen, NH 4 , an ammonium ion of a primary, secondary or tertiary amine, or a quaternary ammonium ion.

Claim 8

Toner of claim 4 comprising 100 parts by weight of said resin and 0.5 to 5 parts by weight of the complex compound.

Claim 9

Toner of claim 3 wherein the complex compound has the formula [Al(Y).sub.a ].sup.b- ·X.sup.+.sub.b wherein each individual Y is an optionally alkyl and/or aralkyl substituted aromatic hydroxycarboxylic acid radical, X is a counter ion, a is 2 or 3, and b is 1 when a is 2 and b is 3 when a is 3.

Claim 10

Toner of claim 3 wherein the complex compound has the formula [Al(--O--Ar--COO--).sub.a ].sup.b- ·X.sup.+.sub.b wherein each individual Ar is an optionally alkyl and/or aralkyl substituted aromatic radical, X is hydrogen or NR 4 wherein each individual R is hydrogen, alkyl, alkoxyalkyl, cycloalkyl or aralkyl, a is 2 or 3, and b is 1 when a is 2 and b is 3 when a is 3.

Claim 11

Toner of claim 3 wherein the complex compound is a compound of aluminum and optionally alkyl and/or aralkyl substituted aromatic hydroxycarboxylic acid selected from the group consisting of salicylic acid, alkyl salicylic acid in which said alkyl has 1-12 carbon atoms, 3,5-dialkyl salicylic acid in which each said alkyl has 1-12 carbon atoms, 1-hydroxy-2-naphthoic acid, 2-hydroxy-3-naphthoic acid, 2-hydroxy-1-naphthoic acid, alkyl-2-hydroxy-3-naphthoic acid in which said alkyl has 3-12 carbon atoms, and 6-(alpha-methyl-benzyl)-2-hydroxy-3-naphthoic acid, and mixtures thereof, in the form of a complex with a counter ion.

Claim 12

Toner of claim 9 wherein the counter ion is hydrogen, NH 4 , an ammonium ion of a primary, secondary or tertiary amine, or a quaternary ammonium ion.

Claim 13

Toner of claim 3 wherein the complex compound is selected from the group consisting of __________________________________________________________________________ (1) ##STR15## (2) ##STR16## (3) ##STR17## (4) ##STR18## (5) ##STR19## (6) ##STR20## (7) ##STR21## (8) ##STR22## (9) ##STR23## (10) ##STR24## (11) ##STR25## (12) ##STR26## (13) ##STR27## __________________________________________________________________________

Claim 14

Negatively chargeable dry toner for developing electrostatic latent images, comprising 100 parts by weight of a binder resin and 0.1 to 10 parts by weight of a charge control agent, said agent being the product obtained by treating an aromatic hdyroxycarboxylic acid which is optionlly substituted with alkyl and/or aralkyl in aqueous, alkaline or non-aqueous solution with an aluminum imparting agent, and precipitating and recovering therefrom the corresponding compound of aluminum and the aromatic hydroxycarboxylic acid thereby formed as the reaction product.

Claim 15

Negatively chargeable dry toner for developing electrostatic latent images, comprising 100 parts by weight of a binder resin and 0.1 to 10 parts by weight of a charge control agent, said agent being the product obtained by treating an aromatic hdyroxycarboxylic acid which is optionlly substituted with alkyl and/or aralkyl in aqueous, alkaline or non-aqueous solution with an aluminum imparting agent, and precipitating and recovering therefrom the corresponding compound of aluminum and the aromatic hydroxycarboxylic acid thereby formed as the reaction product.