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US 8,785,100 B2Granted
Two-component developer
AssigneeKonica Minolta Business Technologies, Inc.
InventorsHitomi Motani, Tomoko Mine, Tomomi Oshiba
Life of this patent
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Abstract
The present invention relates to a two-component developer which comprises a toner, and a carrier having a surface of a core material particle coated with a resin having a unit of general formula (1). The present invention provides a two-component developer which has enhanced environmental stability of carrier charging performance.
Claims20
A two-component developer comprising a toner, and a carrier having a surface of a core material particle coated with a resin,
- wherein the resin is a vinyl polymer having a unit of the following general formula (1):
- wherein R1 represents an optionally substituted cycloalkyl group of 3 to 10 carbon atoms;
- R2 represents a hydrogen atom or a methyl group;
- R3 and R4 each represent a hydrogen atom;
- R5 and R6 each independently represent a hydrogen atom or an alkyl group;
- and n is an integer of 0 or greater.
3 more elements
A two-component developer comprising a toner, and a carrier having a surface of a core material particle coated with a resin,
- wherein the resin is a vinyl polymer having a unit of the following general formula (1):
- wherein R1 represents an optionally substituted phenyl group;
- R2 represents a hydrogen atom or a methyl group;
- R3 and R4 each represent a hydrogen atom;
- R5 and R6 each independently represent a hydrogen atom or an alkyl group;
- and n is an integer of 0 or greater,
- and a unit of the following general formula (2):
- wherein R7 represents an alkyl group or a cycloalkyl group.
5 more elements
Dependencies are inferred from the claim text.