We fabricated sub-10-µm-class short-channel, top-gate carbon nanotube thin-film transistors using a flexographic printing technique, which is a high-speed printing technique that uses a flexible polymer plate. This device fabrication process is completely photolithography-free and vacuum-free as a result of the printing technique. The printing resolution was improved by using micro-flexo plates fabricated by a microprocessing technique. The fabricated device, with a channel length of 9.5 µm, exhibited a high on-current of 0.94 mA/mm. Hysteresis was suppressed by introducing a top-gate structure.