Patent ID: 6260938
Filing Date: 2001-07-17
Classification: B41J,G06K,H04N

Abstract:
An ink jet printing apparatus for printing an image on a printing medium by using an ink, comprising:a mount portion on which replaceable first and second ink-jet printheads can be mounted, said first ink-jet printhead discharging a first ink having a relatively high density, and said second ink-jet printhead discharging a second ink having a color similar to the first ink and a density lower than the density of the first ink; andprint control means for performing a print operation controlled by at least one of an upper limit of the amount of ink ejected per unit area and an amount of ink ejected per unit time, in accordance with the density of the first or second ink in said printhead mounted on said mount portion and a type of printing medium, wherein the print operation is performed using the first ink or the second ink, and when the second ink is used, the second ink is discharged in an overlapping manner on the printing medium.