FIELD EMISSION DEVICE AND NANOFIBER MANUFACTURING DEVICE
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Apr 27, 2011
filing date -
Dec 6, 2010
priority date (Note) -
Abandoned
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Abstract
Disclosed herein is a field emission device which makes it possible to reliably mass-produce nanofibers having satisfactory quality, even if field emission is conducted in such a way that high voltage is applied to a collector while a nozzle block is grounded. The field emission device includes a collector (150), a nozzle block (110) and a power supply (160) which has a positive electrode connected to the collector, and a negative electrode that is connected to the nozzle block in such a way that the potential of the negative electrode drops to the ground potential. The field emission device further includes an auxiliary belt device (170) which has: an auxiliary belt (172) that is made of an insulating and porous endless belt and encircles the collector; and an auxiliary belt drive unit (174) rotating the auxiliary belt at a transfer speed of the long sheet.
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