START Lab Inc. (株式会社スタート) is a joint venture of Sony Corporation and Taiyo Yuden Co., Ltd.. The headquarters are in Chiyoda, Tokyo.
START Lab, founded in 1989, is active in the optical media business. The current president is Masanori Kimizuka. 50.1% of START Lab is owned by Sony, 49.9% is owned by Taiyo Yuden.
Well-known product lines include the That's consumer media, the That's CD-R/DVD-R for master product line, and the CD/DVD error checkers (ES-50, ES-70, ES-1000 rebranded Almedio model).