IMAGE FORMING APPARATUS THAT REPRODUCES COLOR TO BE PRINTED WITH SINGLE COLOR MATERIAL ALONE AND BLACK, RECORDING MEDIUM, AND COLOR CONVERSION METHOD

摘要

An image forming apparatus includes a control unit with a reduction mode using a reduced consumption of the color material. The reduction rule includes a rule of conversion configured to, in a constant hue plane of the input color value, move all color values on a straight line passing through a lowest brightness color value and the input color value in a direction from a highest saturation color value to a highest brightness color value, so as to convert into color values on a straight line passing through the lowest brightness color value and a converted input color value where the input color value is converted, the lowest brightness color value being indicative of a color value of lowest brightness, the highest saturation color value being indicative of a color value of highest saturation, the highest brightness color value being indicative of a color value of highest brightness.

主权项

1. An image forming apparatus for printing using a color material by an amount according to an output color value converted from an input color value, the image forming apparatus comprising:
a control unit that has at least one specified operation mode and a reduction mode, the reduction mode using a reduced consumption of the color material compared with the operation mode, the control unit compressing a color gamut of the input color value by a reduction rule when the reduction mode is selected, the reduction rule reducing the consumption of the color material, wherein the reduction rule includes a rule of conversion configured to, in a constant hue plane of the input color value, move all color values on a straight line passing through a lowest brightness color value and the input color value in a direction from a highest saturation color value to a highest brightness color value, so as to convert into color values on a straight line passing through the lowest brightness color value and a converted input color value where the input color value is converted, the lowest brightness color value being indicative of a color value of lowest brightness, the highest saturation color value being indicative of a color value of highest saturation, the highest brightness color value being indicative of a color value of highest brightness.