Ink composition, ink-jet cartridge containing the ink composition, and ink-jet device equipped with the ink-jet cartridge

JP7643998B2Active Publication Date: 2025-03-11SHISEIDO CO LTD
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Patent Information

Application Number
JP2021501728
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-02-28
Filing Date
2020-01-21
Publication Date
2025-03-11
Estimated Expiration
2040-01-21

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Abstract

To provide an ink composition which is less likely to settle even at low viscosity and has excellent hiding power. The ink composition of the present disclosure contains titanium oxide particles and a dispersion medium, has a viscosity of 100 mPa·s or less at a shear rate of 1000 / s, the titanium oxide particles are secondary structure particles having a surface protrusion shape composed of a plurality of primary structures connected together, and has an area-equivalent circle diameter of 150 nm to 500 nm.
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Citation Information

Patent Citations

  • JP1975096383A

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    JP1987058462A

  • Water-based ink for inkjet recording

    JP2008038090A

  • Powder cosmetic

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  • Water-based pigment ink composition and water-based pigment ink writing implements

    JP2014005344A