Patent ID: 7884965
Filing Date: 2011-02-08
Classification: H04N

Abstract:
1. An image-forming device comprising: an image-forming unit that forms an image of a predetermined color by composing a plurality of different color materials; and a controlling unit that controls usage amounts of the color materials to be used by the image-forming unit to form a desired image of the predetermined color at a desired density, the controlling unit including: a judging unit that judges whether the desired density is greater than a threshold density value or not; and a reducing unit that reduces a difference between a minimum value and a maximum value among the usage amounts of the color materials to be used to form the desired image of the predetermined color at the desired density; wherein the reducing unit reduces the difference when the judging unit judges that the desired density is less than or equal to the threshold density value, and the reducing unit fails to reduce the difference when the judging unit judges that the desired density is greater than the threshold density value, wherein the desired image has a desired density that is less than or equal to a maximum density gradation level, and wherein the threshold density value is less than the maximum density gradation level.