US 11,701,881 B2
Liquid discharging apparatus, controlling method for liquid discharging apparatus and medium storing controlling program for liquid discharging apparatus
Satoru Arakane, Nagoya (JP); and Tomoya Kondo, Nagoya (JP)
Assigned to Brother Kogyo Kabushiki Kaisha, Nagoya (JP)
Filed by Brother Kogyo Kabushiki Kaisha, Nagoya (JP)
Filed on Aug. 26, 2021, as Appl. No. 17/412,825.
Claims priority of application No. 2020-147613 (JP), filed on Sep. 2, 2020.
Prior Publication US 2022/0063267 A1, Mar. 3, 2022
Int. Cl. B41J 2/045 (2006.01); B41J 3/60 (2006.01)
CPC B41J 2/04573 (2013.01) [B41J 2/04541 (2013.01); B41J 2/04581 (2013.01); B41J 3/60 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A liquid discharging apparatus comprising:
a channel unit in which a nozzle and an individual channel communicating with the nozzle are formed;
an actuator configured to apply pressure to liquid in the individual channel to discharge the liquid from the nozzle;
a driving circuit electrically connected to the actuator and configured to supply a driving signal to the actuator; and
a controller,
wherein in a first determining processing, in a case of determining that a single-sided recording is to be executed, the controller is configured to supply the driving signal corresponding to each of gradation values for each of pixels to the actuator by the driving circuit at a time of discharging the liquid from the nozzle toward one of a first surface and a second surface of a recording medium, the first determining processing being a processing of determining whether the single-sided recording or a double-sided recording is to be executed, the single-sided recording being of recording an image on one of the first surface and the second surface of the recording medium, the second surface being on a side opposite to the first surface, and the double-sided recording being of recording an image or images on both of the first surface and the second surface of the recording medium,
in a case of determining in the first determining processing that the double-sided recording is to be executed, the controller is configured to supply the driving signal corresponding to each of the gradation values for each of the pixels to the actuator by the driving circuit at a time of discharging the liquid from the nozzle toward the first surface of the recording medium and at a time of discharging the liquid from the nozzle toward the second surface of the recording medium,
the driving signal is provided as a plurality of driving signals constructing a plurality of driving signal groups each of which is composed of at least three driving signals corresponding, respectively, to at least three gradation values including a first gradation value,
the driving signal groups include a first driving signal group used in the single-sided recording and a second driving signal group used in the double-sided recording,
a driving signal which is included in driving signals constructing the second driving signal group and which corresponds to the first gradation value corresponds to an amount of the liquid smaller than an amount of the liquid to be discharged by a driving signal which is included in driving signals constructing the first driving signal group and which corresponds to the first gradation value, and
a driving signal included in the driving signals constructing the first driving signal group and corresponding to a smallest gradation value which is included in the gradation values and by which an amount of the liquid to be discharged from the nozzle is not zero and is smallest is same as a driving signal which is included in the driving signals constructing the second driving signal group and which corresponds to the smallest gradation value.