Printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorsHideki Nakanishi, Hiroshi Uemura
Life of this patent
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Abstract
A printing apparatus which prints by discharging ink droplets from a first nozzle array and a second nozzle array based on print data using a printhead including the first nozzle array and the second nozzle array for discharging ink droplets of the same color and different discharge amounts, the apparatus comprising: a specifying unit configured to specify a discharge failure nozzle in the first nozzle array and the second nozzle array; and a controller configured to assign print data corresponding to the discharge failure nozzle specified by the specifying unit to a nozzle of a nozzle array different from a nozzle array to which the discharge failure nozzle belongs, out of the first nozzle array and the second nozzle array.
Claims11
A printing apparatus which prints by discharging ink droplets from a first nozzle array and a second nozzle array based on print data using a printhead including the first nozzle array and the second nozzle array for discharging ink droplets of the same color and different discharge amounts, the apparatus comprising:
- a specifying unit configured to specify a discharge failure nozzle in the first nozzle array and the second nozzle array;
- and
- a controller configured to assign print data corresponding to the discharge failure nozzle specified by the specifying unit to a nozzle of a nozzle array different from a nozzle array to which the discharge failure nozzle belongs, out of the first nozzle array and the second nozzle array.
A method of printing by discharging ink droplets from a first nozzle array and a second nozzle array based on print data using a printhead including the first nozzle array and the second nozzle array for discharging ink droplets of the same color and different discharge amounts, the method comprising:
- specifying a discharge failure nozzle in the first nozzle array and the second nozzle array;
- and
- assigning print data corresponding to the specified discharge failure nozzle to a nozzle of a nozzle array different from a nozzle array to which the discharge failure nozzle belongs, out of the first nozzle array and the second nozzle array.
Dependencies are inferred from the claim text.