US 11,724,490 B2
Printing apparatus and printing method
Takayoshi Kojima, Nagano (JP); and Hiroyuki Ushiama, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 7, 2021, as Appl. No. 17/495,845.
Claims priority of application No. 2020-171067 (JP), filed on Oct. 9, 2020.
Prior Publication US 2022/0111637 A1, Apr. 14, 2022
Int. Cl. B41J 2/045 (2006.01)
CPC B41J 2/04508 (2013.01) [B41J 2/04586 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a head configured to discharge an ink droplet; and
a control unit configured to perform discharge control of the head, wherein
when printing a boundary region formed by an end portion of a first image and an end portion of a second image lighter than the first image, in specific ink discharge control of a specific ink, among a plurality of inks for printing the end portion of the first image, that exhibits lightness, when forming the end portion of the first image, lower than lightness of the end portion of the second image by at least a predetermined value, the control unit performs specific ink discharge control to cause a number of dots per unit area constituting the end portion of the first image to be smaller than a number of dots per unit area constituting a normal portion, of the first image, adjacent to the end portion of the first image.