| abstract |
To provide an undercoat agent for ink jet printing which enables a predetermined pattern to be formed with an accuracy equivalent to that of photolithography by an ink jet printing method. A processing agent for an ink-jet base that preliminarily surface-treats a substrate used for ink-jet printing, comprising at least a binder resin (A), a fluorine-containing oligomer (B), a photoacid generator (C), and a solvent The fluorine-containing oligomer (B) containing (D) includes a copolymer that is polymerized with the fluorine-containing monomer of the general formula (1) as an essential component, and the resin layer formed by the base treatment agent is An ink-jet base treatment agent that enables lyophilic / repellent patterning by light irradiation through a pattern mask or light irradiation through a pattern mask and heating. [Selection figure] None |