Liquid discharging apparatus and liquid discharging method

摘要

There is provided a liquid discharging apparatus including: a first nozzle row and a second nozzle row in which nozzles for discharging liquid are lined up in a predetermined direction; and a control unit, in which the control unit, when a value of the input data of the image is at least in a partial range, obtains a corrected discharging rate which is a discharging rate smaller than a discharging rate in the non-overlapped region with respect to the value of the input data at least in the partial range of the input data, and discharges the liquid from the nozzles of the first nozzle row and the second nozzle row depending on the corrected discharging rate, and a predetermined recording duty which is a recording duty higher than a recording duty in the non-overlapped region, in the overlapped region.

主权项

1. A liquid discharging apparatus comprising:
a first nozzle row in which nozzles for discharging liquid are lined up in a predetermined direction; a second nozzle row in which nozzles for discharging liquid are lined up in a predetermined direction, and which is disposed by forming an overlapped region in which an end portion of one side in the predetermined direction is overlapped with an end portion of the other side in the predetermined direction of the first nozzle row; and a control unit which discharges liquid from nozzles in the overlapped region and a non-overlapped region which is a region other than the overlapped region, depending on a discharging rate of liquid acquired based on input data of an image, and a recording duty for discharging the liquid, wherein the control unit, when a value of the input data of the image is at least in a partial range of the input data, obtains a corrected discharging rate which is a discharging rate smaller than a discharging rate in the non-overlapped region with respect to the value of the input data at least in the partial range of the input data, and discharges the liquid from the nozzles of the first nozzle row and the second nozzle row in the overlapped region depending on a value of a correction of increasing the corrected discharging rate with a predetermined recording duty which is a recording duty higher than a recording duty in the non-overlapped region, wherein the nozzles discharge liquid droplets having a plurality of sizes to form dots having a plurality of dot sizes, and the corrected discharging rate is an amount related to a dot generation rate for each dot size, wherein, to further decrease the discharging rate in the overlapped region than that in the non-overlapped region at least in a partial range of the input data, is to further decrease the dot generation rate for each dot size in the overlapped region than that in the non-overlapped region at least in a partial range of the input data.