Ink for use in ink jet recording

摘要

An ink for use in the ink-jet recording comprising a dye and/or a pigment and water as the indispensable components and a water-insoluble solid content of 1% or more of the whole quantity, the ink further comprising: a nonionic surfactant having polyethylene oxide groups and polypropylene oxide groups, which is a substance having the structure shown by the following structural formula 1; and a number x of the added polyethylene oxide groups and a number y of the added polypropylene oxide groups satisfy the relation that 0<x<=10, and the relation that x/2-1<y<x/3+2, where m and n are respectively the numbers of the methylene groups, and satisfy the relation that 9<=m+n<=11.