Patent ID: 7929180
Filing Date: 2011-04-19
Classification: G06K

Abstract:
1. A printing system including a host apparatus which generates print data, and an inkjet printing apparatus which prints an image on a printing medium using the print data transferred from said host apparatus, wherein said host apparatus comprises: wherein said analysis unit includes: a conversion unit adapted to convert the print data into grayscale data; a determination unit adapted to determine for each pixel whether or not a value of the grayscale data falls within values defining a range where a blur occurs; a calculation unit adapted to calculate a ratio of pixels suffering a blur to all pixels of an image represented by the print data in accordance with a determination result by said determination unit; a comparison unit adapted to compare the ratio calculated by said calculation unit with a specific threshold; and a decision unit adapted to decide, from a comparison result by said comparison unit, whether or not an intolerable blur occurs in the image, wherein the values defining the range where a blur occurs are variably set in accordance with a type of printing medium, a print quality of printing by the inkjet printing apparatus, and the number of images laid out on one printing medium.