US 12,202,261 B2
Ink jet recording apparatus
Hiroyuki Noguchi, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 21, 2022, as Appl. No. 17/726,380.
Claims priority of application No. 2021-075041 (JP), filed on Apr. 27, 2021.
Prior Publication US 2022/0339928 A1, Oct. 27, 2022
Int. Cl. B41J 2/045 (2006.01); B41J 2/165 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/0451 (2013.01) [B41J 2/17503 (2013.01); B41J 2002/16582 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A recording apparatus comprising:
a carriage equipped with a recording head that ejects ink to a sheet;
a drive unit configured to move the carriage in a width direction of the sheet;
an encoder configured to detect and output first information regarding a position or a velocity of the carriage that moves by the drive unit;
an acceleration sensor arranged on the carriage and configured to detect second information regarding acceleration of the carriage; and
a control unit configured to determine whether there is an abnormality in an output of the encoder based on the first information,
wherein after the control unit determines that there is the abnormality in the output of the encoder, (1) in case that the second information regarding the acceleration detected by the acceleration sensor exceeds a threshold value, the control unit stops movement of the carriage, and (2) in case that the second information regarding the acceleration detected by the acceleration sensor does not exceed the threshold value, the control unit does not stop the movement of the carriage.