Patent ID: 8368979
Filing Date: 2013-02-05
Classification: H04N

Abstract:
1. An image forming apparatus, comprising: a tone correction storage unit that stores a plurality of tone correction charts for correcting tone of image data; a determination unit that determines characteristics of the image data to be printed based on a saturation histogram of the image data to compare information of the saturation histogram with a predetermined reference value; a selection unit that selects a tone correction chart suitable for the image data from the plurality of tone correction charts stored in the tone correction storage unit based on the determination result including the saturation histogram by the determination unit; a chart print unit that prints the tone correction chart selected by the selection unit on a sheet; a receiving unit that receives an adjustment value inputted based on the tone correction chart printed by the chart print unit; a tone correction unit that corrects tone of the image data based the adjustment value received by the receiving unit; and a print unit that prints out the image data after correcting tone of the image data.