FIELD: image formers.
SUBSTANCE: device has image forming unit being capable of forming of image by low-chrome toner and high-toner chrome of the same shade, second toner which has part containing high-chrome toner, and density measuring unit which measures density of image formed by mentioned low-chrome toner and by mentioned low-chrome toner. Image can be formed by low-chrome and by high-chrome toner and the image formed can have the same shade. High degree of grade can be achieved in the lightest area and grain in image can be removed even in area of average density, where low-chrome and high-chrome toners are mixed.
EFFECT: higher degree of gradation.
28 cl, 18 dwg
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