Patent ID: 7087107
Filing Date: 2006-08-08
Classification: B41M,C09B,C09D

Abstract:
1. An ink comprising at least one compound represented by the following formula (I) or (II): wherein X 1 , X 2 , X 3 and X 4 each independently represents —SO-Z or —SO 2 -Z, wherein each Z independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; Y a M represents a hydrogen atom, a metal element or an oxide, hydroxide or halide thereof; provided that at least one of X wherein X 11 , X 12 , X 13 and X 14 each independently represents —SO 2 NR 1 R 2 and/or a sulfo group, provided that X 11 , X 12 , X 13 and X 14 all are not a sulfo group at the same time, wherein R 1 represents, when a plurality of R 1 s are present, each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, R 2 represents, when a plurality of R 2 s are present, each independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, and R 1 and R 2 may combine with each other to form a 5- or 6-membered nitrogen-containing heterocyclic ring; wherein at least one —SO wherein when a sulfo group is directly bonded to a benzene nucleus, the sulfo group is bonded at the 2-, 3-, 6-, 7-, 10-, 11-, 14- or 15-position of formula (II); Y a M represents a hydrogen atom, a metal element or an oxide, hydroxide or halide thereof; provided that at least one of X