云桌面打印映射关键技术

打印机是PC最普遍的外设应用之一. 随着桌面虚拟化的兴起，各种应用逐渐从PC迁移至云桌面. 但云桌面不同于PC的打印架构，为打印应用带来了新的挑战. 文中深入剖析Windows打印框架，详细介绍GDI打印路径和XPS打印路径. 通过比较云桌面与PC的打印结构的差异，分析了云桌面打印遇到的问题，讨论了主流桌面虚拟化厂商给出的解决思路. 通过对主流的USB重定向技术和打印机映射技术的深入分析，比较了它们之间的优势和缺陷，指出了云桌面打印映射亟待解决的问题和未来的研究方向，为云桌面打印映射相关研究提供了参考.

Key Technology of Cloud Desktop Printing Mapping

Printer is one of the most common peripheral device. With the rise of desktop virtualization Technology, applications gradually migrate from PC to cloud desktop, which brings a new challenge for printing because of the sharp different of printing architecture between cloud desktop and PC. This paper explores Windows printing architecture, introduces the GDI print path and XPS printing path, and compares the difference of printing architecture between cloud desktop and PC, then discusses the issues of printing inside the cloud desktop and the solution derived from the major desktop virtualization vendors. By analyzing deep into the major USB redirection technology and printer mapping technology, the advantages and defects of them are compared, and the problems to be solved are discussed. The development direction and research prospects of cloud desktop printing are put forward in this paper.