Studies of the transitional phase from Jomon to Yayoi in the easten Japan

通过对Jokonn，多槽表面处理，对最终的绳纹和最初的Yayoi陶器的仔细观察，很可能处理不是由贝壳软体动物的产品，如普遍接受的，而是由一种专门制作陶器的特色工具进行的。实验重建结果与出土物重建结果吻合较好。该工具具有真正的梳状结构，由小竹棍组成，不同于目前的实心带齿板，组合成带有斜刺的木轴。该工具的分类和设计如下：修剪和未修剪的牙齿、凸、凹和那些混合棒等。

Through the scrutiny into Jokonn, multi-grooved surface treatment, on the final Jomon and initial Yayoi pottery, it is highly probable that the treatment is not by the products of shell molluscus, as is commonly accepted, but by a characteristic tool for the making pottery exclusively. Experimental reconstruction is good accordance with those from enearthed objects. The tool has a genuine comb-like structure of small bamboo sticks, different from present of a solid plate with teeth, combined to a wooden axis with diagonal stling. Classification and designation of this tool are as follows : trimmed vs.untrimmed teeth, convex, concave and those mixed sticks and so on.