US 12,280,589 B2
Ink jet recording apparatus and ink jet recording method
Keiichirou Takeuchi, Tokyo (JP); and Koji Inoue, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 14, 2022, as Appl. No. 17/839,720.
Claims priority of application No. 2021-099785 (JP), filed on Jun. 15, 2021; and application No. 2022-093791 (JP), filed on Jun. 9, 2022.
Prior Publication US 2022/0396083 A1, Dec. 15, 2022
Int. Cl. B41J 11/00 (2006.01); B41J 2/12 (2006.01)
CPC B41J 11/007 (2013.01) [B41J 2/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An ink jet recording apparatus comprising:
a conveying unit that conveys a recording medium;
a pretreatment unit that performs corona treatment on a surface of the recording medium;
an ink image forming unit configured to be able to form an ink image by applying inks of at least two colors so that one of the inks overlaps a region on the recording medium to which another of the inks has been applied, each of the inks containing an anionic pigment;
a brightness measuring unit that measures brightness of the ink image containing a region which is overlapped by the inks of at least two colors; and
a corona treatment intensity changing unit configured to change a corona treatment intensity of the pretreatment unit based on a result obtained by the brightness measuring unit.