Abstract: In order to imitate the image distortion, which is aroused additional processing in the process of printer, factually, to show the image print effect. Based on analyzing the existed printer model, a print analogue algorithm is proposed. It can accomplish the model of printer, by imitating the image resolution and the change of gray-level in the process of printer, exerting halftone and dot gain. Experimental results show that the average gradation of the model is 1.448 compared to the actual printer image.