Claims
- 1. A toner comprising a polymeric binder and a (1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)cyanomethylene charge control-agent having the structure: ##STR14## wherein R represents cyano or --COR.sup.1 wherein R.sup.1 represents trifluoromethyl, methyl, isopropyl, cyclohexyl, 2-ethylhexyl, triphenylmethyl, phenyl, 4-acetylphenyl, 3-aminophenyl, 4-pentylphenyl, 4-methoxyphenyl, 2,4,6-trimethylphenyl, 2,5-dimethoxyphenyl, 2-bromophenyl, 3,4-dichlorophenyl, 2,6-dimethyl-4-methoxyphenyl, 2-methyl-1-naphthyl, 4-nitro-1-naphthyl or 1-methoxy-2-naphthyl.
- 2. The toner according to claim 1 wherein R represents cyano or --COC.sub.6 H.sub.5.
- 3. A toner according to claim 1 wherein the binder is a polyester having a glass transition temperature of 50.degree. to 100.degree. C. and a weight average molecular weight of 10,000 to 100,000.
- 4. A toner according to claim 1 wherein the binder is a polyester that is the nonlinear reaction product of a dicarboxylic acid and a polyol blend of etherified diphenols.
- 5. A toner composition according to claim 1 wherein the binder is a poly(etherified bisphenol A fumarate).
- 6. An electrostatographic developer comprising a carrier and a toner according to claim 1.
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is related to the following titled applications, all in the name of Wilson and Fields and all filed on the same day as the present case:
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0765869 |
Apr 1997 |
EPX |
Non-Patent Literature Citations (2)
Entry |
Grant, R et al, eds. Grant & Hackh's Chemical Dictionary, Fifth Edition, McGraw-Hill Book Company, NY (1987). pp. |
CAS Abstract AN 76:14416 of Melchiorre et al. Ann. Chim (Rome) (1971), 61(6), 399-414. |