Image processing method, recording medium, and image processing apparatus
OwnerNaoki Nakano, Takashi Kimura +1inventors
InventorsNaoki Nakano, Takashi Kimura, Yoshiaki Hoshino
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Abstract
If an input image is black, an image is formed with a black ink and at least one color ink. A usage of the black ink per unit area is 40% to 100% of a reference usage of the black ink per unit area in a case of forming the image at the same density with only the black ink. A usage of the color ink per unit area is 2% to 20% of the reference usage. A dot of the black ink and a dot of the color are arranged at the same position.
Claims20
1-23. (canceled)
An image processing method for an image forming apparatus that includes at least one recording head including a first nozzle line having a first resolution from which a black ink is ejected and a second nozzle line having a second resolution from which at least one color ink is ejected, the image processing method comprising:
- generating image data, when an input image is black, such that the image is formed with the black ink and the color ink with a dot of the black ink and a dot of the color ink formed at a same position, wherein,
- the color ink includes a first color ink and a second color ink, and
- the generating includes arranging dots of the first color ink and the second color ink in a halftone process using a same dither mask.
A recording medium that stores therein a computer program for an image forming apparatus that includes at least one recording head including a first nozzle line having a first resolution from which a black ink is ejected and a second nozzle line having a second resolution from which at least one color ink is ejected, the computer program causing a computer to execute:
- generating image data, when an input image is black, such that the image is formed with the black ink and the color ink with a dot of the black ink and a dot of the color ink formed at a same position, wherein,
- the color ink includes a first color ink and a second color ink, and
- the generating includes arranging dots of the first color ink and the second color ink in a halftone process using a same dither mask.
An image processing apparatus for an image forming apparatus that includes at least one recording head including a first nozzle line having a first resolution from which a black ink is ejected and a second nozzle line having a second resolution from which at least one color ink is ejected, the image processing apparatus comprising:
- a generating unit that generates image data, when an input image is black, such that the image is formed with the black ink and the color ink with a dot of the black ink and a dot of the color ink formed at a same position, wherein,
- the color ink includes a first color ink and a second color ink, and
- the generating includes arranging dots of the first color ink and the second color ink in a halftone process using a same dither mask.
Dependencies are inferred from the claim text.