US 12,103,317 B2
Printing device and printing method
Masaya Usui, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Dec. 21, 2022, as Appl. No. 18/069,262.
Claims priority of application No. 2021-209012 (JP), filed on Dec. 23, 2021.
Prior Publication US 2023/0202195 A1, Jun. 29, 2023
Int. Cl. B41J 2/21 (2006.01); B41J 2/12 (2006.01); B41J 2/155 (2006.01); B41J 29/38 (2006.01); B41J 29/393 (2006.01); B41M 5/00 (2006.01)
CPC B41J 2/2146 (2013.01) [B41J 2/12 (2013.01); B41J 2/155 (2013.01); B41J 29/38 (2013.01); B41J 29/393 (2013.01); B41M 5/00 (2013.01); B41J 2029/3935 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A printing device, comprising:
a printing head including a nozzle row in which a plurality of nozzles configured to discharge liquid to a medium are arranged; and
a control unit configured to control discharge of the liquid from the plurality of nozzles, wherein
the printing head is configured to discharge the liquid along with scanning that is a relative movement in a predetermined direction with respect to the medium, and
in test printing for printing a test pattern on the medium, the control unit performs control such that the liquid of a first discharge amount is discharged from the plurality of nozzles when a color difference between the test pattern and the medium is greater than a predetermined threshold value, and the liquid of a second discharge amount that is greater than the first discharge amount is discharged from the plurality of nozzles when the color difference between the test pattern and the medium is equal to or smaller than the threshold value.