The Japan Robot Association Magazine included an article on Cleaning/Disinfection Robot CL02 written by President and CEO Sankai. The article was part of the “With Corona and After Corona” section, issued on Robot No. 261.
https://www.jara.jp/publications/robot/img/robot261.pdf [PDF]
About the official magazine of the Japan Robot Association
It is a magazine dedicated to robots that first came out in September 1971.
Link to the article (obtained reprint permission) [PDF: 7 MB]