Patent ID: 11168229

Abstract:
The present invention relates to a liquid composition for ink-jet printing which is capable of forming a protective film on a liquid ejection head of an ink-jet type to enhance insulating properties for the liquid ejection head, an image-forming method, a method of forming the protective film, a storing method, and a use of the liquid composition. The present invention provides [1] a liquid composition for ink-jet printing which contains not less than 0.01% by mass and not more than 1.50% by mass of a compound represented by the following formula (1) or a salt thereof, not less than 0.05% by mass and not more than 35% by mass of a compound represented by the following formula (2), and water, [2] an ink-jet image-forming method including the step of ejecting the liquid composition for ink-jet printing according to the above [1] from a liquid ejection head of an ink-jet type including an ejection energy-generating element to form characters or images, [3] a method of forming a protective film on a liquid ejection head of an ink-jet type including an ejection energy-generating element, including the step of applying a voltage to the ejection energy-generating element under such a condition that the ejection energy-generating element is allowed to contact with the liquid composition according to the above [1], [4] a method of storing a liquid ejection head of an ink-jet type including an ejection energy-generating element, including the steps of applying a voltage to the ejection energy-generating element under such a condition that the ejection energy-generating element is allowed to contact with the liquid composition according to the above [1], and filling the liquid ejection head with an ink after the step of applying a voltage, and [5] a use of the liquid composition according to the above [1], as a filling liquid or an ink; R1—O-(AO)j(CH2CH2O)n—B—COOH  (1), andR2—O-(AO)k(CH2CH2O)m—H  (2).