公开(公告)号：US20210363369A1

公开(公告)日：2021-11-25

申请号：US17315362

申请日：2021-05-10

申请人： Mio AKIMA ,  Masaki KUDO ,  Tomohiro HIRADE ,  Nozomi TERAI

发明人： Mio AKIMA ,  Masaki KUDO ,  Tomohiro HIRADE ,  Nozomi TERAI

IPC分类号： C09D11/38 ,  C09D11/107 ,  C09D11/102

摘要： Provided is an ink including water, an organic solvent, resin particles, and a thickener. The thickener comprises polymer particles having a carboxylic acid structure. A proportion of the thickener in the ink is 0.05% by mass or more. Change in viscosity of the ink between before and after storage of the ink at 70° C. for 1 week is 20% or less. The change in viscosity is expressed by Formula (1): Change in viscosity (%)=[(a−b)/b]×100 . . . Formula (1), where a represents a viscosity (mPa·s) at 25° C. of the ink when the ink is prepared, and b represents a viscosity (mPa·s) at 25° C. of the ink after the ink is stored at 70° C. for 1 week.

公开(公告)号：US20220396708A1

公开(公告)日：2022-12-15

申请号：US17828036

申请日：2022-05-31

申请人： Nozomi TERAI ,  Yuusuke KOIZUKA ,  Naoto SHIMURA ,  Tatsuya TAKARADA

发明人： Nozomi TERAI ,  Yuusuke KOIZUKA ,  Naoto SHIMURA ,  Tatsuya TAKARADA

IPC分类号： C09D11/32 ,  B41J2/21 ,  C09D11/033 ,  C09D11/104

摘要： A set of a processing fluid and an ink is provided where the ink contains a coloring material, an organic solvent, and a resin Ri and the processing fluid contains a polyvalent metal salt, a resin Rt, and a silicone-based surfactant. A maximum tensile stress of an ink film obtained by drying the ink is 2 N/mm2 or greater.

公开(公告)号：US20220324241A1

公开(公告)日：2022-10-13

申请号：US17706589

申请日：2022-03-29

申请人： Naoto SHIMURA ,  Yuya HIROKAWA ,  Yuusuke KOIZUKA ,  Takayuki SHIMIZU ,  Itsuro SASAKI ,  Shunsuke HORIE ,  Nozomi TERAI ,  Kenta HAGIWARA

发明人： Naoto SHIMURA ,  Yuya HIROKAWA ,  Yuusuke KOIZUKA ,  Takayuki SHIMIZU ,  Itsuro SASAKI ,  Shunsuke HORIE ,  Nozomi TERAI ,  Kenta HAGIWARA

IPC分类号： B41J11/00 ,  B41M5/00

摘要： A printing method includes discharging ink to a substrate, heating a non-ink-discharged side of the substrate at T1, and heating an ink-discharged side of the substrate at T2, wherein the ink contains an organic solvent A (boiling point lower than 250 degrees C.), an organic solvent B (boiling point of 250 degrees C.), and a resin, where 0 degrees C. C≤T2−T1≤90 degrees C. is satisfied, the proportion (organic solvent A/ink) is 30 percent by mass or less, the proportion (organic solvent B/ink) is 1 to 3 percent by mass, the proportion (resin/ink) is 5 to 15 percent by mass, the ink has a viscosity of 8.0 to 11.0 mPa-s at 25 degrees C. and 5.5 to 11.0 mPa-s at 36 degrees C., and a 2.5 μL ink droplet discharged to the substrate shrinks to 0.1 μL within 10.0 seconds at 25 degrees C.