US 12,138,932 B2
Maintenance liquid for solving ejection problem of UV curable inkjet printer
Takahito Makinouchi, Nagano (JP); and Kazuki Ohara, Nagano (JP)
Assigned to MIMAKI ENGINEERING CO., LTD., Nagano (JP)
Filed by MIMAKI ENGINEERING CO., LTD., Nagano (JP)
Filed on Jul. 8, 2021, as Appl. No. 17/371,096.
Claims priority of application No. 2020-119315 (JP), filed on Jul. 10, 2020.
Prior Publication US 2022/0009236 A1, Jan. 13, 2022
Int. Cl. B41J 2/165 (2006.01); B08B 3/08 (2006.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); C09D 11/38 (2014.01); C11D 7/26 (2006.01); C11D 7/30 (2006.01); C11D 7/32 (2006.01); C11D 7/50 (2006.01)
CPC B41J 2/16552 (2013.01) [B08B 3/08 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/38 (2013.01); C11D 7/261 (2013.01); C11D 7/263 (2013.01); C11D 7/266 (2013.01); C11D 7/30 (2013.01); C11D 7/32 (2013.01); C11D 7/5022 (2013.01); C11D 2111/20 (2024.01)] 5 Claims
OG exemplary drawing
 
1. A maintenance liquid for an ultraviolet (UV) curable inkjet printer, the maintenance liquid comprising:
a first ingredient in which a water-soluble compound is soluble and a cured matter of a UV curable ink is insoluble, and
a second ingredient in which the water-soluble compound is insoluble and the cured matter of the UV curable ink is soluble,
wherein
the first ingredient is configured to dissolve the water-soluble compound, which is a crystal-like solid matter originated from an acidic monomer and an initiator included in the UV curable ink, and water,
the initiator is a phosphorous-based initiator; and
the second ingredient is configured to dissolve the cured matter of the UV curable ink.