Patent ID: 9120942
Filing Date: 2015-09-01
Classification: B41J,C09D

Abstract:
1. An image recording method, comprising: a first step of applying a first black ink containing a pigment to a record medium; and after the first step, a second step of applying a second black ink containing a pigment to the record medium such that the second ink at least partly overlaps the first black ink, wherein the first black ink contains a salt containing at least one kind of cation selected from the group consisting of an alkali metal ion, an ammonium ion, and an organic ammonium ion and at least one kind of anion selected from the group consisting of Cl − , Br − , I − , ClO − , ClO 2 − , ClO 3 − , ClO 4 − , NO 2 − , NO 3 − , SO 4 2− , CO 3 2− , HCO 3 − , HCOO − , (COO − ) 2 , COOH(COO − ), CH 3 COO − , C 2 H 4 (COO − ) 2 , C 6 H 5 COO − , C 6 H 4 (COO − ) 2 , PO 4 3− , HPO 4 2− , and H 2 PO 4 − , and a static surface tension of the first black ink is higher than a static surface tension of the second black ink.