A BASIC STUDY ON THE SAME DESIGN TANKO IN MIDDLE KOFUN PERIOD

据认为，大和中央集权政体组织的军事制度在古芬中期复盖了很大范围。这一观点是建立在以生产铁甲为主的中小型铁甲数量增加的基础上的，但很少有人试图展示铁甲是如何被埋在日本各地的铁甲中的。为了探索这一点，需要对充分利用铁甲复杂结构的同一设计文物进行系统的研究。如果我们揭示这些相同设计文物的实际情况和地理分布，那么我们就可以具体考察铁甲的生产和流通。因此，在本研究中，作者将出现频率最高的水平矩形板甲作为古丰中期的铁甲，并试图对相同设计的盔甲进行整理，收集了日本各地关于水平矩形板甲的详细资料。通过对这些数据的分析，可以清楚地看出，在科芬中期后期繁荣的水平矩形板甲中，存在着两种类型的技术趋势：一种是受三角板铆接Tanko装甲影响的趋势，另一种是在水平矩形板甲批量生产阶段新形成的趋势。基于这一事实，对具有相似特征的器物进行详细分析，使我们能够观察到相同设计盔甲的存在，这似乎一直是生产过程的最小单位。

It has been suggested that the military system organized by the centralized polity of Yamato covered a wide area in Middle Kofun Period. This view is based upon the increased number of medium and small-sized tumuli which mainly yielded iron armor, but few attempts have been made to show how the iron armor came to be buried in tumuli in various parts of Japan.In order to explore this point, a systematic study is needed on the same design artifacts which made the most of armor's complicated structure. If we reveal the actual condition and the geographical distribution of those same design artifacts, then we can examine the production and circulation of iron armor concretely. In this study, therefore, the author deals with the horizontal rectangular plate armor which has been found most frequently as iron armor of Middle Kofun Period, and attempts to sort out the same design armor.The author collects the detailed data on the horizontal rectangular plate armor throughout Japan. By analyzing those data, it is clear that among the horizontal rectangular plate armor which prospered in the later phase of Middle Kofun Period, there were two types of technical trend: the trend which was influenced by the riveted tanko armor of triangular plates, and the trend which was newly formed at the stage of the mass production of the horizontal rectangular plate armor. Based upon this fact, the detailed analysis of the artifacts with similar characteristics enables us to observe the existence of the same design armor, which seems to have been the minimum unit of the production process.