The invention relates to an embedded system for printing on colored background based on automatic generation of white underbase including printing ink separations. The system comprising: an embedded apparatus for receiving input data respecting an image printable on the colored background. The image constitutes a color or a grayscale containing transparency information. The apparatus processes the input data and outputs white underbase information including printing ink separation; a dual-acting device capable of acting in a first aspect as a plate making or film generating means in respect of offline printing, and in a second aspect acting as a print controller in respect of online printing. The system also includes a printing device, which can be an offset printing device, a screen printing device, a hybrid printing device when offline printing being adapted; and/or, an inkjet printer, a laser printer or a toner-based printer when online printing being resorted.