Mapping technological trajectories as the main paths of knowledge flow: Evidence from printers
通过主路径分析和专利权人交叉引用网络，研究热喷墨打印头的技术发展，发现其经历了三个发散-收敛的知识流动周期，每个周期由核心问题和解决方案驱动。
Abstract In this paper, we recognize that technological trajectories can be modeled as a series of problem-solving activities, manifesting the cyclical pattern of divergence–convergence knowledge flow. This recognition is applied to study the technological development of the thermal inkjet print head, using main path analysis and an assignee cross-citation network. Our analysis shows that the thermal inkjet print head experienced three cycles of divergence–convergence knowledge flow. Each of the cycles was evidently characterized by a problem of most concern and a referred solution. Our research contributes to explaining why, when, and how trajectories diverge and converge cyclically.