Patent ID: 8783823

Claim:
A maintenance liquid for an ink-jet device used for a method of forming a pattern, the method including a process of discharging, using the ink-jet device, a photo-curable composition mainly composed of a polymerizable monomer, onto a substrate or a mold having a fine pattern formed thereon, applying the other one of the substrate and the mold onto the photo-curable composition and irradiating light onto the photo-curable composition held between the substrate and the mold having a fine pattern formed thereon, the maintenance liquid containing a compound having an ester group and/or an ether group, and a polymerizable monomer, and the maintenance liquid contains no photopolymerization initiator; wherein a ratio of area corresponded to polymerization products of the polymerizable monomer in the maintenance liquid is 0.5% or smaller relative to the polymerizable monomer, when measured by gel permeation chromatography (GPC) using a differential refractometer (RI detector); and at least one species of the polymerizable monomer contained in the maintenance liquid is a polymerizable monomer represented by the following formula: wherein Ar is an arylene group which may have a substituent, X is a single bond or an organic linking group, R 1 is a hydrogen atom or a methyl group, and n is 2 or 3.