Abstract: An ink jet printing apparatus is provided which can suppress defective ejection of ink from the nozzles. An element array with a plurality of print elements arranged therein is divided into a plurality of groups of print elements. For each of the plurality of groups, the apparatus determines whether any area undergoes a failure to perform a normal printing operation. If the apparatus determines, for any of the plurality of groups, that any area is likely to undergo the failure, when the print medium is printed based on the print data corresponding to the area, control is performed in such a manner that a first amount of energy supplied to drive one print element is greater than a second amount of energy supplied to drive one print element immediately before the print medium is printed based on the print data corresponding to the area.

Abstract: An ink jet printing apparatus is provided which can suppress defective ejection of ink from the nozzles. An element array with a plurality of print elements arranged therein is divided into a plurality of groups of print elements. For each of the plurality of groups, the apparatus determines whether any area undergoes a failure to perform a normal printing operation. If the apparatus determines, for any of the plurality of groups, that any area is likely to undergo the failure, when the print medium is printed based on the print data corresponding to the area, control is performed in such a manner that a first amount of energy supplied to drive one print element is greater than a second amount of energy supplied to drive one print element immediately before the print medium is printed based on the print data corresponding to the area.

Abstract: An inkjet printing apparatus and an inkjet printing method are realized which can improve a print quality while minimizing the volume of waste ink, running cost and throughput degradations. For this purpose, the scan width is set according to the size and position of the print medium and then, based on that scan width, a location where the preliminary ejections are to be executed and the number of times that the preliminary ejection is to be executed in a single preliminary ejection session are determined.

Abstract: An ink jet printing apparatus is provided which can suppress defective ejection of ink from the nozzles. An element array with a plurality of print elements arranged therein is divided into a plurality of groups of print elements. For each of the plurality of groups, the apparatus determines whether any area undergoes a failure to perform a normal printing operation. If the apparatus determines, for any of the plurality of groups, that any area is likely to undergo the failure, when the print medium is printed based on the print data corresponding to the area, control is performed in such a manner that a first amount of energy supplied to drive one print element is greater than a second amount of energy supplied to drive one print element immediately before the print medium is printed based on the print data corresponding to the area.

Abstract: An inkjet printing apparatus and an inkjet printing method are realized which can improve a print quality while minimizing the volume of waste ink, running cost and throughput degradations. For this purpose, the scan width is set according to the size and position of the print medium and then, based on that scan width, a location where the preliminary ejections are to be executed and the number of times that the preliminary ejection is to be executed in a single preliminary ejection session are determined.

Abstract: The present invention provides an ink jet printing apparatus and an ink jet printing method in which even with a variation in ink ejection amount depending on an image print area, the ink ejection amount for preliminary ejection can be optimally set. For this purpose, a print area is divided into a plurality of areas, and the number of ink ejections through a nozzle is measured for each of the areas. Based on the number of ink ejections for each area, the number of ink ejections for the preliminary ejection is determined.

Abstract: An inkjet printing apparatus and an inkjet printing method are realized which can improve a print quality while minimizing the volume of waste ink, running cost and throughput degradations. For this purpose, the scan width is set according to the size and position of the print medium and then, based on that scan width, a location where the preliminary ejections are to be executed and the number of times that the preliminary ejection is to be executed in a single preliminary ejection session are determined.