Patent ID: 7965412

Claim:
A processing method for processing an image data within a printing device that produces the image data as a printout, the image data including a foreground and a background, each of which is formed by a combination of Cyan data, Magenta data, Yellow data and K (black) data and each of which is to be printed by a combination of CMYK (Cyan, Magenta, Yellow and Black) color elements, the processing method comprising the steps: (a) capturing the Cyan data, the Magenta data, the Yellow data and the K data of the foreground; (b) selecting one from the Cyan data, the Magenta data, the Yellow data and the K data of the foreground in order to set gray values of remaining three of the Cyan data, the Magenta data, the Yellow data and the K data of the foreground as “0”; (c) capturing the Cyan data, the Magenta data, the Yellow data and the K data of the background; (d) combining the Cyan data of the foreground and background into a Cyan data group, the Magenta data of the foreground and background into a Magenta data group, the Yellow data of the foreground and background into a Yellow data group and the K data of the foreground and background into a K data group respectively; (e) printing the Cyan data group, the Magenta data group, the Yellow data group and the K data group one above another in an overlapping manner within the printing device in order to achieve the printout; (f) splitting the image data into the foreground and a predetermined background; (g) splitting the foreground in order to achieve the Cyan data, the Magenta data, the Yellow data and the K data respectively and the predetermined background in order to achieve a predetermined Cyan data, a predetermined Magenta data, a predetermined Yellow data and a predetermined K data, respectively; and (h) replacing gray value of the predetermined Cyan data of the predetermined background with that of the Cyan data of the background in order to achieve the Cyan data of the background, the predetermined Magenta data of the predetermined background with that of the Magenta data of the background in order to achieve the Magenta data of the background, the predetermined Yellow data of the predetermined background with that of the Yellow data of the background in order to achieve the Yellow data of the background, and the predetermined K data of the predetermined background with that of the K data of the background in order to achieve the K data of the background.