Liquid discharge apparatus

A controlling method for controlling a liquid discharge apparatus including:

• a discharge head including a plurality of nozzles;
• a head scanning mechanism configured to reciprocatingly move the discharge head in a main scanning direction;
• a conveyer configured to convey a recording medium in a sub-scanning direction orthogonal to the main scanning direction;
• and a controller, the method comprising causing the controller to execute, in one pass:
• recording processing in which an image is formed on the recording medium by moving the discharge head in the main scanning direction and discharging liquid from the discharge head;
• setting processing, executed after completion of the recording processing, in which the discharge head is moved from an ending position of the recording processing for the one pass to a starting position of the recording processing for a subsequent pass following the one pass by changing a moving direction of the discharge head at a standstill position;
• and
• conveyance processing in which the recording medium is conveyed in the sub-scanning direction,
• wherein the method further causes the controller to:
• determine whether the subsequent pass is a first state pass or a second state pass which is different from the first state pass based on image data of the image;
• adjust a control distance of the discharge head by shifting the standstill position in the main scanning direction for the one pass as a first control distance in a case that the subsequent pass is the first state pass;
• and
• adjust a control distance of the discharge head by shifting the standstill position in the main scanning direction for the one pass as a second control distance longer than the first control distance in a case that the subsequent pass is the second state pass.

A non-transitory medium storing a program executable by a liquid discharge apparatus including:

• a discharge head including a plurality of nozzles;
• a head scanning mechanism configured to reciprocatingly move the discharge head in a main scanning direction;
• a conveyer configured to convey a recording medium in a sub-scanning direction orthogonal to the main scanning direction;
• and a controller, the program, when executed by a processor of the liquid discharge apparatus, causing the controller to execute, in one pass:
• recording processing in which an image is formed on the recording medium by moving the discharge head in the main scanning direction and discharging liquid from the discharge head;
• setting processing, executed after completion of the recording processing, in which the discharge head is moved from an ending position of the recording processing for the one pass to a starting position of the recording processing for a subsequent pass following the one pass by changing a moving direction of the discharge head at a standstill position;
• and
• conveyance processing in which the recording medium is conveyed in the sub-scanning direction,
• wherein the program further causes the controller to:
• determine whether the subsequent pass is a first state pass or a second state pass which is different from the first state pass based on image data of the image;
• adjust a control distance of the discharge head by shifting the standstill position in the main scanning direction for the one pass as a first control distance in a case that the subsequent pass is the first state pass;
• and
• adjust a control distance of the discharge head by shifting the standstill position in the main scanning direction for the one pass as a second control distance longer than the first control distance in a case that the subsequent pass is the second state pass.