Developer compositions containing alkyl pyridinium toluene sulfonates
AssigneeXerox Corporation
InventorChin H. Lu
Life of this patent
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Abstract
This invention is directed to developer compositions comprised of toner particles and carrier particles, the toner particles being comprised of resin particles, pigment particles, and from about 0.1 to about 10 percent based on the weight of the toner particles of an alkyl pyridinium toluene sulfonate charge enhancing additive of the formula: ##STR1## wherein R is an alkyl radical containing from about 12 carbon atoms to about 25 carbon atoms, which compositions are useful for causing the development of images in electrostatographic imaging systems.
Claims20
An electrostatic developer composition comprised of toner particles and carrier particles, the toner particles being comprised of resin particles, pigment particles, and from about 0.1 to about 10 percent based on the weight of the toner particles of an alkyl pyridinium toluene sulfonate charge enhancing additive of the formula:
- ##STR5## wherein R is an alkyl radical containing from about 12 carbon atoms to about 25 carbon atoms.
A method of developing images which comprises forming a negative electrostatic latent image on an imaging member, contacting the image with a positively charged electrostatic developing composition comprised of toner particles and carrier particles, the toner particles being comprised of resin particles, pigment particles, and from about 0.1 percent to about 10 weight percent based on the weight of the toner particles of an alkyl pyridinium toluene sulfonate charge enhancing additive of the formula:
- ##STR6## wherein R is an alkyl radical containing from about 12 carbon atoms to about 25 carbon atoms.
Dependencies are inferred from the claim text.