Ink-jet recording method, ink, ink cartridge, recording apparatus, and recorded matter

This invention describes an inkjet printing method that uses a specific alkaline ink containing tiny color particles, a resin, and a surfactant. This ink is printed onto a special paper that also has an alkaline surface and a pigment-containing coating, which absorbs water very slowly. The printing process uses a small amount of ink, and the claims specifically mention using phthalocyanine blue as the colorant and an SBR emulsion in the paper's coating.

Why it matters: Since 2008, advancements in materials science and chemical engineering have likely improved the precision and cost-effectiveness of manufacturing specialized inks and paper coatings. This could make the specific pH and absorption characteristics described more consistently achievable for high-performance digital printing applications.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedChemical formulations, specialized paper manufacturing

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