An image-forming method of recording an image of plural pixels by a recording means using an image-forming material not completely permeating into a recording medium and capable of forming an image with a thickness is provided. An image-forming material which is scarcely absorbed by a recording medium and which can be cured with keeping a certain thickness after formation of an image is used, and the existing thickness calculated in the step of existing thickness-calculating step is brought close to the intended thickness set in the intended thickness-setting step by the step of determining an application amount for each color. In the case of increasing a color (e.g., black) less influencing the color balance, the thickness is reduced and, in the case of decreasing a color (e.g., black) less influencing the color balance, the thickness is increased.