Patent ID: 9120317
Filing Date: 2015-09-01
Classification: B41J

Abstract:
1. A liquid jetting apparatus comprising: a liquid jetting head having a liquid jetting surface in which a nozzle is formed; a wiping unit configured to wipe the liquid jetting surface of the liquid jetting head; and a drive section configured to move at least one of the wiping unit and the liquid jetting head such that the wiping unit moves relative to the liquid jetting head toward one side in a predetermined direction along the liquid jetting surface, wherein the wiping unit has a first wiping portion and a second wiping portion which are arranged in the predetermined direction with an interval therebetween, and each of which has a leading end configured to contact with the liquid jetting surface and extends in a direction intersecting the liquid jetting surface, wherein the leading end of the first wiping portion has a greater surface roughness than that of the leading end of the second wiping portion, and wherein the leading end of the first wiping portion has a first rough surface facing the one side in the predetermined direction and a first smooth surface facing the other side in the predetermined direction and having a surface roughness smaller than that of the first rough surface, the leading end of the second wiping portion has a second rough surface facing the one side in the predetermined direction and having a surface roughness smaller than that of the first rough surface and greater than that of the first smooth surface and a second smooth surface facing the other side in the predetermined direction and having a surface roughness smaller than that of the second rough surface, and the drive section is configured to move the wiping unit relative to the liquid jetting surface to the one side in the predetermined direction in a state that the first rough surface of the first wiping portion and the second rough surface of the second wiping portion are in contact with the liquid jetting surface, and thereafter, move the wiping unit relative to the liquid jetting surface to the other side in the predetermined direction in a state that the first smooth surface of the first wiping portion and the second smooth surface of the second wiping portion are in contact with the liquid jetting surface.