Halftone is first used in color printing systems. The two main methods used in halftone of color printing systems are amplitude modulation and frequency modulation. But because the difference in techniques

we cannot use the methods in color printing directly into the system of textile printing. With the development of CAD/CAM and modern textile techniques

more and more researches focus on the design and manufacture of gradient patterns in textile printing. Based on the algorithm in color printing systems

a novel algorithm for halftone used in textile printing is presented. It can satisfy the techniques of textile printing. At the same time it overcomes the disadvantage of the old halftone algorithms and will not produce moirépatterns again. At the end of the paper

some improvements on the algorithm are also mentioned so that it can be more suitable for the idiographic techniques in textile printing. The algorithm it has been realized under Windows 98 and has been used in the textile oriented CAD/CAM system (Top98) in real factories.