官印战国到秦汉时代,印章大部分是可以随身佩带的。因此,印都不大。除了少数战国巨玺外,一般官印都在方寸左右。由于封泥使用的需要,印文多为凹入的白文。战国白文官印,大小约2.5厘米左右,正方形,偶有不呈正方或圆形,多鼻纽,印文外多加边栏,或中间再加十字界格。据记载,秦开始对印文和印材进行了规定。现所见秦官印,多为方形, India and Warring States Period to the Qin and Han dynasties, most of the seal can be worn. Therefore, India is not large. In addition to a few Warring States Great Seal, the general official seal are about square inch. Due to the use of sealing mud, Indian text is mostly concave white text. Warring States Baiwen Guan Yin, the size of about 2.5 centimeters, square, occasional not square or round, multi-nasal, printed outside plus more sidebar, or in the middle plus cross the grid. According to records, Qin began printing and printing materials were provided. Qin official seal is now seen, mostly square,