Inkjet printing apparatus, inkjet printing method, program, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorJun SHIMOJI
Life of this patent
Estimating the term…
Abstract
The invention obtains superior printing quality even when printing at high speed, thinning the number of multi-pass inkjet printing scans. The inkjet printing apparatus comprises a printhead composed of multiple printing element arrays that are arranged corresponding to ink colors in the main scanning direction, and a unit that makes the printing duty of at least one printing element array vary with regard to the printing duty of other printing element arrays, according to the printing element arrays.
Claims15
An inkjet printing apparatus, comprising:
- a plurality of printing element arrays of a plurality of printing elements for a given ink that are arranged in a first direction, and which move the plurality of printing element arrays vis-à-vis the a printing medium in a relative direction that intersects the first direction to perform printing in line with image data;
- a memory adapted to store a plurality of mask patterns having different mask rates, for thinning the image data;
- and
- a generation unit adapted to, using the mask pattern, generate the printing data so as to vary the printing duty for the front-side printing element array and the printing duty for the back-side printing element array in the direction of the relative movement, in the plurality of printing element arrays, wherein
- the generation unit selects the mask pattern used to generate the printing data in accordance with printing conditions.
An inkjet printing apparatus, comprising:
- a plurality of printing element arrays of a plurality of printing elements for a plurality of colors of ink that are arranged in a first direction, and which move the plurality of printing element arrays vis-à-vis the a printing medium in a relative direction that intersects the first direction to perform printing in line with the image data;
- a memory adapted to store a plurality of mask patterns having different mask rates, for thinning the image data;
- and
- a generation unit adapted to, using the mask pattern, generate the printing data so as to vary the printing duty for the front-side printing element array and the printing duty for the back-side printing element array in the direction of the relative movement, for at least one printing element array in the plurality of printing element arrays, wherein
- the generation unit selects the mask pattern used to generate the printing data in accordance with printing conditions.
An inkjet printing method, comprising the steps of:
- using a plurality of printing element arrays of a plurality of printing elements for a given ink that are arranged in a first direction, and which move the plurality of printing element arrays vis-à-vis the a printing medium in a relative direction that intersects the first direction to perform printing in line with image data;
- and
- generating, using a mask pattern, the printing data so as to vary the printing duty for the front-side printing element array and the printing duty for the back-side printing element array in the direction of the relative movement, in the plurality of printing arrays, wherein
- the mask pattern used to generate the printing data is selected in accordance with printing conditions.
Dependencies are inferred from the claim text.