Ink, ink container, ink set, ink jet printing apparatus, and...

Details Ink, ink container, ink set, ink jet printing apparatus, and... Ink, ink container, ink set, ink jet printing apparatus, and...

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01) B41J 2/21 (2006.01) B41J 11/00 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2252154

An ink of the present invention has a dye and a pigment. The pigment is a self-dispersant type pigment and an anionic dye in which at least one anionic group is bound on a surface of the pigment directly or through another atomic group and having a Ka value of less than 1 ml~m-2~msec-1/2 according to a Bristow method. An image having an excellent image quality is formed by using such an ink in the process of ink jet recording.

Divulgation d'une encre comprenant un colorant et un pigment. Le pigment est de type auto-dispersant et le colorant est un colorant anionique, dans lequel au moins un groupement anionique est lié à une surface du pigment, directement ou par l'intermédiaire d'un autre groupement atomique, et a une valeur de Ka inférieure à 1 mL.m-2.ms-1/2, déterminée selon la méthode de Bristow. On peut former une image d'excellente qualité à l'aide d'une telle encre, par un procédé d'impression par jet d'encre.

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