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US 11,181,848 B2Granted
Liquid developer and method of producing liquid developer
AssigneeCanon Kabushiki Kaisha
InventorsKouichirou Ochi, Yuzo Tokunaga, Tomoyo Miyakai, Akifumi Matsubara, Takashi Hirasa, Hayato Ida, Yasutaka Akashi
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Abstract
A liquid developer containing a liquid carrier and a toner particle that is insoluble in the liquid carrier, wherein a particular substructure is bonded through a covalent bond to a surface of the toner particle, and a method of producing a liquid developer containing a liquid carrier and a toner particle that is insoluble in the liquid carrier, the method comprising a step (I) of covalently bonding, to a surface of the toner particle, a compound having a particular substructure.
Claims5
A liquid developer, comprising:
- a liquid carrier;
- and
- a toner particle having a surface comprising a binder resin, the binder resin being a reaction product of (i) a resin having an acid anhydride group and (ii) a compound having a primary amino group and a substructure represented by formula (3)
- where R1 represents an optionally substituted C6-20 alkylene group or an optionally substituted C6-20 cycloalkylene group, and p is an integer of at least 1, wherein
- the acid anhydride group has been reacted with the primary amino group thereby forming an amide bond binding the resin and the compound to form the binder resin having the substructure, the substructure in the binder resin being covalently bonded to the surface of the toner particle, and
- the toner particle is insoluble in the liquid carrier.
3 more elements
Dependencies are inferred from the claim text.