Pigment ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

A pigment ink is provided which has good ink reliability and storage stability and can achieve superior scratch resistance of images at such a level that coloring materials are hardly scraped off even when images are scratched with finger nails under application of such strong pressure as to scratch...

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Bibliographische Detailangaben
Hauptverfasser: Saito, Takashi, Shirota, Katsuhiro, Hakamada, Shinichi, Tsujimura, Masashi, Mukae, Fumihiko, Suzuki, Katsuhiko
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A pigment ink is provided which has good ink reliability and storage stability and can achieve superior scratch resistance of images at such a level that coloring materials are hardly scraped off even when images are scratched with finger nails under application of such strong pressure as to scratch a recording medium at its non-recorded areas. The pigment ink contains a pigment, a modified siloxane compound having a specific structure, and a polymer whose acid value and hydrogen bond parameter (δh) are specified.