JP2008169272A5

JP2008169272A5 -

Info

Publication number: JP2008169272A5
Application number: JP2007002356A
Authority: JP
Filing date: 2007-01-10
Publication date: 2010-02-12
Anticipated expiration: 2027-01-10

Description

上記の目的は以下の本発明によって達成される。すなわち、本発明は、複数のポリマー及びカーボンブラックを含有するインクであって、前記複数のポリマーが、ブロックコポリマー及びランダムコポリマーを含み、インク全質量を基準とした前記ブロックコポリマーの含有量Ａ（質量％）及び前記ランダムコポリマーの含有量Ｂ（質量％）の比が、下記式（１）の関係を満たし、さらにインク全質量を基準とした前記カーボンブラックの含有量Ｃ（質量％）、前記Ａ及び前記Ｂが、下記式（２）の関係を満たすことを特徴とするインクを提供する。

The above object is achieved by the present invention described below. That is, the present invention is an ink containing a plurality of polymers and carbon black, wherein the plurality of polymers includes a block copolymer and a random copolymer, and the content A (mass of the block copolymer based on the total mass of the ink). the ratio of the content B (wt%) percent) and the random copolymer, meets the following relationship formula (1), the content of the carbon black was further based on the total mass of the ink C (mass%), the a and the B is to provide an ink which is characterized in Succoth satisfy a relationship represented by the following formula (2).

Claims

A water-based ink containing a plurality of polymers and carbon black,
The plurality of polymers includes block copolymers and random copolymers;
The ink ratio of the content A of the block copolymer the total weight as a reference (mass%) and the content B (wt%) of the random copolymer, meets the following relationship formula (1), a further ink total mass the content of the carbon black used as a reference C (mass%), the a and the B is an aqueous ink characterized by Succoth satisfy a relationship represented by the following formula (2).

The aqueous ink according to claim 1, wherein the block copolymer is an acrylic polymer having an acid value of 130 mgKOH / g or more and less than 230 mgKOH / g.

The water-based ink according to claim 1 or 2 , wherein the block copolymer is an acrylic polymer having a weight average molecular weight of 2,000 or more and less than 15,000.

The water-based ink according to any one of claims 1 to 3 , wherein the random copolymer is an acrylic polymer having an acid value of 100 mgKOH / g or more and less than 160 mgKOH / g.

The water-based ink according to any one of claims 1 to 4 , wherein the random copolymer is an acrylic polymer having a weight average molecular weight of 4,000 or more and less than 25,000.

6. An ink jet recording method for recording on a recording medium by ejecting ink by an ink jet method, wherein the ink is the water-based ink according to any one of claims 1 to 5 .

6. An ink cartridge comprising an ink container that contains ink, wherein the ink is the water-based ink according to any one of claims 1 to 5 .

An ink container portion containing an ink, a recording unit comprising a recording head for ejecting ink, said ink is an aqueous ink according to any one of claims 1 to 5 Characteristic recording unit.

6. An ink jet recording apparatus comprising an ink containing portion containing ink and a recording head for discharging ink, wherein the ink is the water-based ink according to any one of claims 1 to 5. An ink jet recording apparatus.