Designed to compensate for rapid changes in air pressure, the aircraft safe uni-ball VISION eliminates in-flight ink leakage, eliminating flight pressure The newly adopted tank reduces the space in which air can be expanded, thus minimizing the expansion of air inside the ink tank By bypassing a collector, the relaxed air is expelled before forcing the ink out This results in a less powerful ink flow and prevents ink leakage The "UNI-FLOW SYSTEM" ensures smooth writing performance up to the last drop of ink
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