Ink jet image forming method
AssigneeKonica Minolta, Inc.
InventorHaruka Moriyama
Life of this patent
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Abstract
An object of the present invention is to provide an ink jet image forming method capable of obtaining a high grade image quality in which blur is suppressed even in the case of performing printing with respect to a low water-absorption recording medium. The present invention relates to an ink jet image forming method. The ink jet image forming method includes: an image forming step of ejecting and impacting an ink jet recording ink containing at least a pigment, an organic solvent, and water onto a region of low water-absorption recording medium, in which a resin and a pigment aggregating agent are attached to a surface, from a nozzle of an ink jet head, wherein in the image forming step, relative humidity of a space between the nozzle and the recording medium is greater than or equal to 50% and less than or equal to 95%.
Claims19
An ink jet image forming method comprising:
- an image forming step of ejecting and impacting an ink jet recording ink containing at least a pigment, an organic solvent, and water onto a region of low water-absorption recording medium, in which a resin and a pigment aggregating agent are attached to a surface, from a nozzle of an ink jet head,
- characterized in that, in the image forming step, relative humidity of a space between the nozzle and the recording medium is adjusted to be greater than or equal to 50% and less than or equal to 95%,
- wherein the ink jet recording ink contains two or more types of organic solvents, a mass ratio of polyhydric alcohols with respect to the total mass of the organic solvent is higher than a mass ratio of the other organic solvents,
- wherein the recording medium is adjusted by using a humidifying unit comprising a supply port for supplying humidified air to the space between the nozzle and the recording medium, an exhaust port for discharging the humidified air from the space between the nozzle and the recording medium, and a humidity sensor for measuring the relative humidity in the space between the nozzle and the recording medium, and
- wherein the humidity sensor has a feedback function for feeding back the measured relative humidity to the humidifying unit.
Dependencies are inferred from the claim text.