Ink for ink jet, a method for produing ink for ink jet, ink set for ink jet, and ink jet recording method
AssigneeFuji Photo Film Co., Ltd.
InventorsToshiki Taguchi, Naotaka Wachi
Life of this patent
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Abstract
As an ink for ink jet, containing at least a water-soluble dye having an anionic dissociable group, water and a water-soluble organic solvent, an ink including a cationic polymer capable of forming an ion pair with the anionic dissociable group is used. The cationic polymer is a water-soluble polymer, and at least one of cations is preferably derived from a nitrogen atom, and it is preferable to mix the cationic polymer and the water-soluble dye having the anionic desociable group in advance in water and to prepare an ink after eliminating the resulting salt.
Claims10
An ink for ink jet comprising:
- a water-soluble dye having an anionic dissociable group;
- at least one of water and a water-soluble organic solvent;
- and
- at least one kind of cationic polymer capable of forming an ion pair with the anionic dissociable group.
A method for producing an ink for ink jet, the method comprising:
- mixing in advance:
- a water-soluble dye having an anionic dissociable group;
- and at least one cationic polymer capable of forming an ion pair with the anionic dissociable group, in water, to form a resulting salt;
- and
- preparing the ink after desalting the resulting salt.
Dependencies are inferred from the claim text.