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US 6,582,041 B1Granted
Printing head, printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorYuji Tsuruoka
Life of this patent
Estimating the term…
Abstract
A print head capable of printing with different resolutions includes a plurality of printing elements for applying printing agent on a printing material, wherein the print head is movable relative to the printing material in a moving direction; and drive timing changing means for changing drive timing of the printing elements in accordance with the print resolution to change print pitch in the moving direction.
Claims19
A print head capable of printing with different resolutions, comprising:
- a plurality of printing elements for applying ink on a printing material, wherein amounts of ink ejected from said printing elements are changeable, respectively, and said printing head is movable relative to said printing material in the moving direction;
- divided-driving means for driving said printing elements, wherein said printing elements are grouped into a plurality of groups, and said divided-driving means drives said printing elements by groups;
- and
- drive changing means for changing the number of groups into which said printing elements are grouped and the amounts of the ink ejected from printing elements in accordance with the print resolution to change print pitch in said moving direction,
- wherein said drive changing means operates such that when the resolution is relatively high, the number of groups is relatively larger, and the amounts of ejection are adjusted accordingly.
2 more elements
A printing apparatus comprising:
- a plurality of printing elements for applying ink on a printing material;
- means for moving said print head relative to said printing material in a moving direction;
- divided-driving means for driving said printing elements, wherein said printing elements are grouped into a plurality of groups, and said divided-driving means drives said printing elements by groups;
- and
- drive changing means for changing the number of groups into which said printing elements are grouped and the amounts of the ink ejected from printing elements in accordance with the print resolution to change print pitch in said moving direction,
- wherein said drive changing means operates such that when the resolution is relatively high, the number of groups is relatively larger, and the amounts of ejection are adjusted accordingly.
3 more elements
A printing method comprising:
- a step of preparing a print head capable of printing with different resolutions, including a plurality of printing elements for applying ink on a printing material, wherein the print head is movable relative to the printing material in a moving direction;
- and
- a step of changing the numbers of blocks into which the printing elements are grouped and the amounts of the ink ejected from printing elements in accordance with the print resolution to change print pitch in the moving direction,
- wherein, in said changing step, when the resolution is relatively high, the number of groups is relatively larger, and the amounts of ejection are adjusted accordingly.
1 more element
A printing apparatus comprising:
- means for carrying and moving a recording head having a plurality of printing elements and capable of ejecting ink with different amounts of ejection;
- divided-driving means for driving said printing elements, wherein said printing elements are grouped into a plurality of groups, and said divided-driving means drives said printing elements by groups in a time-sharing manner;
- and
- drive changing means for changing the number of groups into which said printing elements are grouped and the amounts of the ink ejected from said print head in accordance with the print resolution to change print pitch in said moving direction,
- wherein said drive changing means operates such that when the resolution is relatively high, the number of groups is relatively larger, and the amounts of ejection are adjusted accordingly.
2 more elements
Dependencies are inferred from the claim text.