Toner compositions with aluminum negative charge enhancing additives
AssigneeXerox Corporation
InventorBeng S. Ong
Life of this patent
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Abstract
A negatively charged toner composition comprised of resin, colorants comprised of color dyes or pigment particles, optional surface additives, and an aluminum charge enhancing additive obtained from the reaction of aluminum ions with either four molar equivalents of an orthohydroxyphenol and a base, or two molar equivalents, each of an orthohydroxyphenol and a phenol, and a base.
Claims27
A negatively charged toner composition consisting essentially of resin, colorants comprised of color dyes or pigment particles, optional surface additives, and an aluminum charge enhancing additive obtained from the reaction of aluminum ions with either four molar equivalents of an ortho-hydroxyphenol and a base, or two molar equivalents, each of an ortho-hydroxyphenol and a phenol, and a base.
A negatively charged toner composition consisting essentially of resin or resins, pigment particles, optional surface additives, and an aluminum charge enhancing additive represented by the following formula ##STR8## wherein R and R' are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, aryloxy, hydroxy, halogen, amino, cyano, and nitro;
- R" is hydrogen or hydroxy;
- M+ is a proton, an ammonium ion, a substituted ammonium ion or a metal cation;
- and x and y are the numbers 1 or 2.
A developer composition consisting essentially of a negatively charged toner consisting essentially of resin, pigment particles, optional surface additives, and an aluminum charge enhancing additive obtained from the reaction of aluminum ions with either four molar equivalents of an orthohydroxyphenol and a base, or two molar equivalents, each of an orthohydroxyphenol and a phenol, and a base;
- and carrier particles.
A developer composition consisting essentially of a negatively charged toner composition comprised of resin or resins, pigment particles, optional surface additives, and an aluminum charge enhancing additive represented by the following formula ##STR9## wherein R and R' are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, aryloxy, hydroxy, halogen, amino, cyano, and nitro;
- R" is hydrogen or hydroxy;
- M+ is a proton, an ammonium ion, a substituted ammonium ion or a metal cation;
- and x and y are the numbers 1 or 2;
- and carrier particles.
A negatively charged toner composition consisting of resin, pigment and an aluminum charge enhancing additive represented by the following formula ##STR10## wherein R and R' are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, aryloxy, hydroxy, halogen, amino, cyano, and nitro;
- R" is hydrogen or hydroxy;
- M+ is a proton, an ammonium ion, a substituted ammonium ion or metal cation;
- and x and y are the numbers 1 or 2.
Dependencies are inferred from the claim text.