US 12,330,421 B2
Liquid droplet ejecting apparatus
Yuya Kato, Nagoya (JP); Haruhisa Takayama, Nagoya (JP); and Atsushi Ito, Nagoya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Mar. 14, 2023, as Appl. No. 18/183,249.
Claims priority of application No. 2022-061644 (JP), filed on Apr. 1, 2022.
Prior Publication US 2023/0311517 A1, Oct. 5, 2023
Int. Cl. B41J 2/165 (2006.01); B41J 2/045 (2006.01); B41J 2/125 (2006.01)
CPC B41J 2/16579 (2013.01) [B41J 2/0456 (2013.01); B41J 2/04561 (2013.01); B41J 2/04591 (2013.01); B41J 2/125 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A liquid droplet ejecting apparatus, comprising:
an ejecting head having a plurality of nozzles through which liquid droplets are ejected onto a print medium;
a light source configured to cause light to be radiated toward a flight space with a first output power or a second output power higher than the first output power, the flight space being a space in which the liquid droplets ejected from the ejecting head fly;
a detecting element configured to detect received amount of the light radiated from the light source and passed through the liquid droplets flying in the flight space; and
a controller configured to:
cause the light to be radiated from the light source with the first output power or the second output power at a timing of the ejecting head being driven such that the ejecting head ejects the liquid droplets;
in a first detecting mode in which the light is radiated from the light source with the first output power, execute a detection about an ejection failure of one of the nozzles based on the received amount of the light detected by the detecting element; and
in a second detecting mode in which the light is radiated from the light source with the second output power, execute a detection about a phenomenon causing the ejection failure based on the received amount of the light detected by the detecting element.