| 摘要 |
PURPOSE:To prevent background staining and to enhance printing resistance by incorporating a resin having comprising structural units each having at least one kind of functional group producing a specified group on decomposition as the main component of a surface layer. CONSTITUTION:The surface layer is composed essentially of the resin having structural units having the functional groups each producing upon decomposition at least one of a sulfo group and the groups represented by formulae I and II in which R is hydrocarbon group or -Z2-R'; R' is a hydrocarbon group; each of Q1, Q2, Z1, Z2, Z3, and Z4 is O or S, independent of each other, thus permitting qualities excellent in both of resistance to background staining and printing resistance to be obtained. |
