Two component electrophotographic developers and preparation method
First Claim
1. A two component electrophotographic developer including carrier particles and toner particles, said toner particles each comprising a substantially uniform mixture of:
- polymeric binder;
a first agent selected from the group consisting of compounds having the general structure;
##STR15## wherein n is from about 7 to about 21;
R1 and R2 are each independently H or alkyl having from 1 to about 3 carbons;
T represents an unshared electron pair or a proton and a counterion; and
R3 is substituted or unsubstituted alkyl, alkylamide, aryl, or heteroaryl; and
a second agent comprising quaternary ammonium salt.
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Abstract
A two component electrophotographic developer and development method. The developer includes carrier particles and toner comprising: polymeric binder; a first agent selected from the group consisting of compounds having the general structure: ##STR1## wherein n is from about 7 to about 21; R1 and R2 are each independently H or alkyl having from 1 to about 3 carbons; T represents an unshared electron pair or a proton and a counterion; and R3 is substituted or unsubstituted alkyl, alkylamide, aryl, or heteroaryl; and a second agent comprising quaternary ammonium salt.
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Citations
20 Claims
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1. A two component electrophotographic developer including carrier particles and toner particles, said toner particles each comprising a substantially uniform mixture of:
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polymeric binder; a first agent selected from the group consisting of compounds having the general structure;
##STR15## wherein n is from about 7 to about 21;R1 and R2 are each independently H or alkyl having from 1 to about 3 carbons; T represents an unshared electron pair or a proton and a counterion; and R3 is substituted or unsubstituted alkyl, alkylamide, aryl, or heteroaryl; and a second agent comprising quaternary ammonium salt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A two component electrophotographic developer including carrier particles and toner particles, said toner particles each comprising a substantially uniform mixture of:
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polymeric binder; a first agent selected from the group consisting of compounds having the general structure;
##STR18## wherein n is from about 7 to about 21,R1 and R2 are each independently H or alkyl having from 1 to about 3 carbons, and T represents an unshared electron pair or a proton and a counterion; and a second agent selected from the group consisting of quaternary ammonium salts having the general formula;
##STR19## wherein Ra, Rb, Rc, and Rd are each alkyl having from 1 to about 21 carbons, or Ra is alkyl having from 1 to carbons and Rb, Rc, and Rd are atoms and electrons necessary to complete an aromatic or heteroaromatic ring system having 1 or 2 rings;X is an anion. - View Dependent Claims (17, 18, 19)
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20. A method for preparing developer comprising the steps of:
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preparing polymeric binder; admixing said binder, a first agent selected from the group consisting of compounds having the general structure;
##STR21## wherein n is from about 7 to about 21;R1 and R2 are each independently H or alkyl having from 1 to about 3 carbons; T represents an unshared electron pair or a proton and a counterion; and R3 is substituted or unsubstituted alkyl, aryl, or heteroaryl; and a second agent selected from the group consisting of quaternary ammonium salts having the general formula;
##STR22## wherein Ra, Rb, Rc, and Rd are each alkyl having from to about 21 carbons, or Ra is alkyl having from 1 to carbons and Rb, Rc, and Rd are atoms and electrons necessary to complete an aromatic or heteroaromatic ring system having 1 or 2 rings; andX is an anion; to provide a substantially uniform articulate or melt blend; and pulverizing said blend.
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Specification