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US 2021/0173318 A1Published application
Liquid developer
AssigneeKao Corporation
InventorsTaiki YAMAMOTO, Yuki WAKABAYASHI
Life of this patent
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Abstract
The present invention relates to a liquid developer containing toner particles containing a colorant and a binder resin containing a polyester resin; and an insulating liquid, wherein the polyester resin includes a constituent unit derived from an alcohol component and a constituent unit derived from a carboxylic acid component, and the toner particles contain an acid-modified product A of a polymer of an α-olefin having 3 or more and 18 or less carbon atoms.
Claims18
A liquid developer, comprising,
- toner particles containing a colorant and a binder resin including a polyester resin;
- and
- an insulating liquid, wherein
- the polyester resin includes a constituent unit derived from an alcohol component and a constituent unit derived from a carboxylic acid component, and
- the constituent unit derived from the carboxylic acid component of the polyester resin includes a constituent unit derived from an acid-modified product A of a polymer of an α-olefin having 3 or more and 18 or less carbon atoms.
2 more elements
(canceled)
6-7. (canceled)
A method for producing a liquid developer, comprising:
- melt kneading a binder resin including a polyester resin, a colorant, and an acid-modified product A of a polymer of an α-olefin having 3 or more and 18 or less carbon atoms and then pulverizing, to obtain toner particles;
- dispersing the toner particles in an insulating liquid, to obtain a dispersion;
- and
- wet pulverizing the dispersion, to obtain a liquid developer.
1 more element
Dependencies are inferred from the claim text.