US 12,441,102 B2
Liquid ejection apparatus and abnormality detection method capable of detecting abnormality of nozzle
Daichi Kawano, Osaka (JP); Takashi Inoue, Osaka (JP); Keisuke Maeyama, Osaka (JP); Tatsuya Nakagawa, Osaka (JP); Satoshi Morimoto, Osaka (JP); and Minori Yamamoto, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
Filed on Sep. 27, 2023, as Appl. No. 18/476,136.
Claims priority of application No. 2022-156454 (JP), filed on Sep. 29, 2022.
Prior Publication US 2024/0109288 A1, Apr. 4, 2024
Int. Cl. B41J 2/155 (2006.01); B41J 2/045 (2006.01)
CPC B41J 2/0451 (2013.01) [B41J 2/04581 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A liquid ejection apparatus comprising:
a nozzle configured to eject a liquid;
a pressure chamber communicating with the nozzle and configured to contain the liquid;
a piezoelectric element configured to change a pressure in the pressure chamber in response to an input of a drive signal;
an acquisition processing portion configured to, when image formation processing for ejecting the liquid from the nozzle is executed based on image data, acquire a length of a non-ejection period in which the liquid is not ejected from the nozzle, the non-ejection period being included in an execution period of the image formation processing; and
a restriction processing portion configured to, when the length of the non-ejection period acquired by the acquisition processing portion is less than a predetermined first threshold value, restrict execution of abnormality detection processing for detecting an abnormality of the nozzle using the piezoelectric element.