| 摘要 |
The printing operation of an ink jet printer (12) is controlled (22) based on the density of the image to be printed. Using the density (24), a required drying time for each swath of printed matter is determined based on the image density, and hence a suitable rate of print ejection (28). Also using the density, a maximum print frequency of firing the ink jets is determined (26). The density is determined by filtering stored print data by dividing the print data into blocks and determining a maximum number of ON pixels in a block. Such filtering enables clusters of ON pixels to be detected thus providing a more accurate determination of the density. <IMAGE> |
