Patent ID: 7964655

Claim:
A liquid composition for use with an ink composition for deposition on a recording medium, the composition being free from any colorant and comprising a modified polyallylamine, a water soluble organic solvent, polymer fine particles selected from the group consisting of anionic polymer particles, nonionic polymer particles and a combination of anionic and nonionic polymer, and water, wherein said modified polyallylamine comprises recurring units (a) and (c) or recurring units (a), (b) and (c): wherein R 1 and R 2 each independently represent an alkyl group having 1 to 4 carbon atoms, X represents any of groups (i) to (v): (i) —CONH 2 , (ii) —COOR S wherein R 3 represents an alkyl group having 1 to 12 carbon atoms, or an aryl group, (iii) —COR 4 wherein R 4 represents an alkyl group having 1 to 12 carbon atoms, (iv) —CH 2 CH(R 5 )-A wherein R 5 represents a hydrogen atom or a methyl group and A is selected from the group consisting of —CONR 6 R 7 wherein R 6 and R 7 each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms and the alkyl group is optionally substituted by a group selected from the group consisting of a hydroxyl group, a keto group, a monoalkylamino group having t to 4 carbon atoms, a dialkylamino group where the alkyl contains 1 to 4 carbon atoms or a trialkyl ammonium group where the alkyl contains 1 to 4 carbon atoms, or NR 6 R 7 combine together to represent a cyclic amino group of a piperidino or morpholino group, —CN and COOR 8 wherein R 8 represents an alkyl group having 1 to 8 carbon atoms and the alkyl group is optionally substituted by a group selected from the group consisting of a hydroxyl group, a keto group, a monoalkylamino group having 1 to 4 carbon atoms, a, a dialkylamino group where the alkyl contains 1 to 4 carbon atoms and, a trialkyl ammonium group where the alkyl contains 1 to 4 carbon atoms or (v) —CH 2 CH(OH)-B wherein B represents an alkyl group having 1 to 8 carbon atoms and the alkyl group is optionally substituted by a group selected from the group consisting of a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, and an alkenyloxy group; Y has the same meaning as X, or a hydrogen atom, and X and Y each may be the same or different each recurring unit.