Abstract: The present invention includes a plurality of substrate stages which are provided under a head unit, on which substrates are loaded, and which move along a rail, a head unit is controlled to perform first printing on a substrate at a first position, and after the substrate stage moves, perform second printing on the one substrate at the first position or a second position, and thus a total tact time can be decreased and productivity can be improved.

Abstract: An inkjet printing apparatus is provided. The inkjet printing apparatus includes a plurality of nozzles, each of the plurality of nozzles adapted to be controlled to discharge a separated ink quantity mapped to a control value input, a nozzle performance measuring circuit inputting the control value mapped to the separated ink quantity to the each of the plurality of nozzles, and a control circuit calculating a target print ink quantity in case where a reference separated ink quantity is discharged from a plurality of dots on a window and determining the control value of each of the plurality of nozzles. The control circuit may designate one dot in the window as a reference dot and determine the control value of the each of the plurality of nozzles within the window as the reference dot and the window move sequentially within a printing area.

Abstract: Provided is an inkjet printing method using a plurality of nozzles adapted to be controlled, if given control values are inputted to the plurality of nozzles, to discharge separated ink quantities mapped to the given control values, the method including the steps of: inputting the control value mapped to a given separated ink quantity to the plurality of nozzles, measuring quantities of ink discharged from the plurality of nozzles, and determining discharge performance of the plurality of nozzles; calculating a target print ink quantity in case where a reference separated ink quantity is discharged from a plurality of dots on a window having the plurality of dots constituting at least two or more rows and columns determined based on print resolution (dpi); and determining the control values of the plurality of nozzles based on the discharge performance of the plurality of nozzles to allow the sum of quantities of ink discharged of ink dots injected into the window to be maintained to the target print ink quan

Abstract: Provided is an inkjet printing method using a plurality of nozzles which are controlled to discharge discrete quantities of ink mapped to a specific control value, of which a control value and discrete quantities of ink are mapped, if the specific control value is inputted, the inkjet printing method including the steps of: inputting a control value mapped to specific discrete quantities of ink to the plurality of nozzles to measure discharge performance of the plurality of nozzles; classifying the plurality of nozzles into a plurality of nozzle groups based on the discharge performance measured on the plurality of nozzles; adjusting a mapped relation between the discrete quantities of ink and the control value for the classified nozzle groups; and performing inkjet printing based on a mapped relation between the discrete quantities of ink and the control value.

Abstract: Provided is an inkjet printing method using a plurality of nozzles which are controlled to discharge discrete quantities of ink mapped to a specific control value, of which a control value and discrete quantities of ink are mapped, if the specific control value is inputted, the inkjet printing method including the steps of: inputting a control value mapped to specific discrete quantities of ink to the plurality of nozzles to measure discharge performance of the plurality of nozzles; classifying the plurality of nozzles into a plurality of nozzle groups based on the discharge performance measured on the plurality of nozzles; adjusting a mapped relation between the discrete quantities of ink and the control value for the classified nozzle groups; and performing inkjet printing based on a mapped relation between the discrete quantities of ink and the control value.