US 12,391,035 B2
Printing apparatus and printing method
Kazuaki Yoneya, Kyoto (JP); Yusaku Ikeda, Kyoto (JP); and Tomoyuki Sakai, Kyoto (JP)
Assigned to SCREEN HOLDINGS CO., LTD., Kyoto (JP)
Filed by SCREEN HOLDINGS CO., LTD., Kyoto (JP)
Filed on Aug. 30, 2023, as Appl. No. 18/458,351.
Claims priority of application No. 2022-150159 (JP), filed on Sep. 21, 2022.
Prior Publication US 2024/0092078 A1, Mar. 21, 2024
Int. Cl. B41J 2/045 (2006.01); B41J 2/21 (2006.01)
CPC B41J 2/04508 (2013.01) [B41J 2/04586 (2013.01); B41J 2/2114 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A printing apparatus that performs printing by ejecting ink onto a printing medium, the printing apparatus comprising:
a conveyor configured to convey the printing medium;
a first ink ejection head including a plurality of ink ejection ports, the first ink ejection head being configured to eject a first ink onto the printing medium conveyed by the conveyor;
a second ink ejection head including a plurality of ink ejection ports and disposed on an upstream side of the first ink ejection head regarding a direction in which the printing medium is conveyed by the conveyor, the second ink ejection head being configured to eject a second ink onto the printing medium conveyed by the conveyor;
a correction area determination unit configured to determine a correction area that is a part of area where the second ink is to be ejected among the area on the printing medium; and
an ink ejection controller configured to control ejection of the second ink from the second ink ejection head to cause the second ink to be ejected onto the correction area before the first ink is ejected onto the correction area,
wherein
a wet spreading range of the first ink on the printing medium is larger when the first ink is ejected onto the second ink that is ejected onto the printing medium than when the first ink is directly ejected onto the printing medium.