Resin composition for toners and a toner containing the same

A toner used in the development of electrostatic images comprising a resin composition which provides reduced roller fouling and improved offset resistance characteristics, which composition comprises, a resin (A) containing carboxyl groups and a resin (B) containing glycidyl or .beta.-methylglycidyl groups,

• wherein said resin (A) is obtained by a reaction between a multivalent metal compound (m) and copolymer .alpha., said copolymer .alpha. being obtained from a styrene monomer (a), a (meth)acrylic ester monomer (b), and vinyl monomer (c) containing carboxyl groups, and
• said resin (B) is copolymer .beta. obtained from a vinyl monomer (d) containing glycidyl or .beta.-methyl-glycidyl groups and another vinyl monomer (e).

A toner used in the development of electrostatic images comprising a resin composition which provides reduced roller fouling and improved offset resistance characteristics, which composition comprises, a resin (A) containing carboxyl groups and a resin (B) containing glycidyl or .beta.-methylglycidyl groups, said resin (A) is obtained by a reaction between a multivalent metal compound (m) and copolymer .alpha., said copolymer .alpha. being obtained from a styrene monomer (a), a (meth)acrylic ester monomer (b), and vinyl monomer (c) containing carboxyl groups, and

• said resin (B) is copolymer .beta. obtained from a vinyl monomer (d) containing glycidyl or .beta.-methylglycidyl groups and another vinyl monomer (e),
• wherein said vinyl monomer (c) containing carboxyl groups is contained in an amount of 1-20% by weight in said copolymer .alpha., said multivalent metal compound (m) is contained in an amount of 0.1-1 mol for every 1 mol of said monomer (c), and said vinyl monomer (d) containing glycidyl or p-methylglycidyl groups is contained in an amount of 0.1-10 mol in said copolymer .beta. for every 1 mol of said monomer (c).

A toner used in the development of electrostatic images comprising a resin composition which provides reduced roller fouling and improved offset resistance characteristics, which composition comprises a resin (A) containing carboxyl groups and a resin (B) containing glycidyl or .beta.-methylglycidyl groups,

• said resin (A) is obtained by a reaction between a multivalent metal compound (m) and copolymer .alpha., said copolymer .alpha. being obtained from a styrene monomer (a), a (meth)acrylic ester monomer (b), and vinyl monomer (c) containing carboxyl groups, and
• said resin (B) is copolymer .beta. obtained from a vinyl monomer (d) containing glycidyl or .beta.-methylglycidyl groups and another vinyl monomer (e),
• wherein said vinyl monomer (d) containing glycidyl or .beta.-methylglycidyl groups is contained in an amount of 50% by weight or more in said resin (B), the weight average molecular weight of said resin (B) is 50,000 or more, and said resin (B) is contained in an amount of 1-30 parts by weight for every 100 parts by weight of said resin (A).