INK SET AND RECORDING DEVICE

• Main Author: YAMAZAKI SOICHI
• Format: Patent
• Language: English; Japanese
• Published: 25.07.2016
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PREPARATION OF CARBON BLACK; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide an ink set having such properties that even when a black ink and a color ink are mixed in a small amount upon wiping or the like, the black ink hardly aggregates or the black ink hardly induces aggregation of the other color ink, and a recording device including the above ink set.SOLUTION: The ink set includes a black ink and a color ink, in which the black ink comprises carbon black having a carboxyl group on a surface thereof, a resin particle having a carboxyl group on a surface thereof, betaine, alkali ions, and water. The alkali ions include a potassium ion, a sodium ion, and an organic alkali compound, in which the content of the potassium ion is the largest in the alkali ions.SELECTED DRAWING: None 【課題】ワイプなどの際にブラックインクとカラーインクとが少量混合した場合であっても、ブラックインクが凝集しにくい、又はブラックインクが他のカラーインクを凝集させにくい、インクセット、及び該インクセットを備える記録装置を提供することを目的とする。【解決手段】ブラックインクと、カラーインクと、を備え、前記ブラックインクが、表面にカルボキシル基を有するカーボンブラックと、表面にカルボキシル基を有する樹脂粒子と、ベタインと、アルカリイオンと、水と、を含み、前記アルカリイオンが、カリウムイオンと、ナトリウムイオンと、有機アルカリ化合物と、を含み、前記カリウムイオンの含有量が、前記アルカリイオンのうち、最も多い、インクセット。【選択図】なし