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US 9,434,851 B2Granted
Ink set for inkjet recording and inkjet recording method
AssigneeKYOCERA Document Solutions Inc.
InventorNoriaki Ozawa
Life of this patent
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Abstract
An ink set for inkjet recording includes: a first ink containing a black dye and a polyamine; and a second ink containing a black pigment having a coat of an anionic resin. An inkjet recording method includes: ejecting a first ink containing a black dye and a polyamine onto a recording medium through an inkjet recording head; and ejecting a second ink containing a black pigment having a coat of an anionic resin onto the first ink ejected on the recording medium through an inkjet recording head.
Claims15
An ink set for inkjet recording, comprising:
- a first ink containing a black dye and a polyamine having a mass average molecular weight of no less than 5000 and no greater than 15000;
- and
- a second ink containing a black pigment having a coat of an anionic resin, wherein
- the first ink is an ink that is ejected onto a recording medium,
- the second ink is an ink that is ejected onto the first ink ejected on the recording medium,
- the first ink and the second ink are not mixed together before the second ink is ejected onto the first ink ejected on the recording medium, and
- the first ink and the second ink are mixed together on the recording medium after the second ink is ejected onto the first ink ejected on the recording medium.
4 more elements
An inkjet recording method, comprising:
- ejecting a first ink containing a black dye and a polyamine having a mass average molecular weight of no less than 5000 and no greater than 15000 onto a recording medium through an inkjet recording head;
- and
- ejecting a second ink containing a black pigment having a coat of an anionic resin onto the first ink ejected on the recording medium through an inkjet recording head.
Dependencies are inferred from the claim text.