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公开(公告)号：US11279133B2
公开(公告)日：2022-03-22
申请号：US17028462
申请日：2020-09-22
Inventor： Hidehiro Yoshida , Yousuke Toyofuku , Kentaro Kumazawa
Abstract: The ink jet device is provided with a plurality of ink jet heads including a plurality of nozzles disposed linearly with each other at intervals in a predetermined longitudinal direction and ejecting ink in different regions each other in the printing width direction; and a position adjusting mechanism performing rotating operation of changing the intervals in the printing width direction of the nozzles by rotating the plurality of ink jet heads around an axis perpendicular to the print surface of the print object, and performing a shifting operation of shifting at least one of the plurality of ink jet heads in the printing width direction.
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公开(公告)号：US10369783B2
公开(公告)日：2019-08-06
申请号：US15886811
申请日：2018-02-01
Inventor： Kentaro Kumazawa , Shuhei Nakatani , Takao Nagumo , Takashi Inoue , Futoshi Ohtsuka
Abstract: A high precision printing method taking into consideration the variance in the thickness of a printing target. An ink-jet printing method, including: (i) measuring a distance between a printing target and at least one nozzle; (ii) measuring a flying speed and a flying angle of an ink(a) discharged from the at least one nozzle; (iii) printing a test substrate with an ink to identify a location on which an ink(b) is spotted, and calculating a thickness-related displacement that is a displacement from the location on which the ink is spotted, based on a thickness difference between the printing target and the test substrate from results obtained in Step (i), and the flying speed and the flying angle of the ink(a) obtained in Step (ii); and (iv) discharging an ink(c) from the at least one nozzle to achieve actual printing of the printing target with the ink(c) while correcting the thickness-related displacement.
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