Ink printing method and ink-jet printing apparatus for performing printing with use of ink which performs function as a processing liquid making coloring material in other ink insoluble
First Claim
1. An ink printing method comprising the steps of:
- employing a black ink and a low concentration colored ink which has a lower concentration than a colored ink with higher lightness than that of said black ink, has a same type of color as that of said colored ink and has a polarity different from said black ink; and
forming a black image by at least partly making said black ink, which is applied in accordance with black ink data, react with said low concentration colored ink applied in accordance with low concentration colored ink data which is generated based on said black ink data.
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Accused Products
Abstract
In a case of forming an image of a black series, a low concentration colored ink having an opposite polarity to that of a black series ink is added thereto in an overlaying manner. Then, the deviation can be made visually unrecognized for the low concentration of the colored ink even if the overlaid condition of inks is not within a predetermined range. In addition to an increase in density due to insolublization of the black series ink, this increase in the density of the black image can be achieved within a range in which no change is recognized in the hue. More specifically, a relation between an optical density according to a dye concentration of cyan ink or a thinning rate of cyan dots and permissible deviation to print quality is examined in advance, and the dye concentration or thinning rate of cyan ink is set in order to determine an optical density of cyan ink according to predictable or existing deviation on a printer.
131 Citations
52 Claims
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1. An ink printing method comprising the steps of:
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employing a black ink and a low concentration colored ink which has a lower concentration than a colored ink with higher lightness than that of said black ink, has a same type of color as that of said colored ink and has a polarity different from said black ink; and
forming a black image by at least partly making said black ink, which is applied in accordance with black ink data, react with said low concentration colored ink applied in accordance with low concentration colored ink data which is generated based on said black ink data. - View Dependent Claims (2)
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3. An ink printing method comprising the steps of:
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employing a black ink, one of or a plurality of colored inks having higher lightness than said black ink and a low concentration colored ink which has a lower concentration than said colored ink, has a same type of color as that of said colored ink and has a polarity different from that of said black ink; and
forming a black image by at least partly making said black ink, which is applied in accordance with black ink data, react with said low concentration colored ink applied in accordance with low concentration colored ink data which is generated based on said black ink data. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. An ink printing method comprising the steps of:
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employing a plurality of colored inks different from a black ink and having higher lightness than that of said black ink, and a low concentration colored ink having a lower concentration than that of said colored ink and a different polarity from that of said colored ink; and
forming an image of a color by at least partly making said colored ink react with said low concentration colored ink, wherein said colored ink and said low concentration colored ink have a same type of color to each other.
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11. An ink-jet printing apparatus for performing printing comprising:
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ink ejection parts respectively ejecting a black ink, and a low concentration colored ink which has a lower concentration than a colored ink with higher lightness than that of said black ink, has a same type of color as that of said colored ink and has a polarity different from said black ink; and
means for forming a black image by at least partly making said black ink, which is applied in accordance with black ink data, react with said low concentration colored ink applied in accordance with low concentration colored ink data which is generated based on said black ink data. - View Dependent Claims (12)
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13. An ink-jet printing apparatus for performing printing comprising:
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ink ejection parts respectively ejecting a black ink, one of or a plurality of colored inks having higher lightness than said black ink and a low concentration colored ink which has a lower concentration than said colored ink, has a same type of color as that of said colored ink and has a polarity different from that of said black ink, and means for forming a black image by at least partly making said black ink, which is applied in accordance with black ink data, react with said low concentration colored ink applied in accordance with low concentration colored ink data which is generated based on said black ink data. - View Dependent Claims (14, 15, 16, 17, 18, 19)
said black image is formed by ejecting said low concentration colored ink and said black ink one upon another. -
15. An ink-jet printing apparatus as claimed in claim 14, wherein said low concentration colored ink is a light blue ink.
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16. An ink-jet printing apparatus as claimed in claim 15, wherein said light blue ink is a light cyan ink.
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17. An ink-jet printing apparatus as claimed in claim 16, wherein said black ink has an anionic property and said light cyan ink has a cationic property.
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18. An ink-jet printing apparatus as claimed in claim 14, wherein said low concentration colored ink is ejected after said black ink is ejected so that said low concentration colored ink is overlaid on said black ink.
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19. An ink-jet printing apparatus as claimed in claim 18, wherein said black ink has an anionic property and said low concentration colored ink has a cationic property.
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20. An ink-jet printing apparatus for performing printing comprising:
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ink ejection parts respectively ejecting a plurality of colored inks different from a black ink and having higher lightness than that of said black ink, and a low concentration colored ink having a lower concentration than that of said colored ink and a different polarity from that of said colored ink; and
means for forming a colored image by at least partly making said colored ink react with said low concentration colored ink, wherein said colored ink and said low concentration colored ink have a same type of color to each other. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. An ink set comprising:
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a low concentration colored ink which is employed together with a black ink and one or a plurality of colored inks having higher lightness than said black ink in a printing apparatus, the low concentration colored ink having a lower concentration than said colored ink and a same type color as said colored ink, and said low concentration colored ink having an opposite polarity to at least said black ink to have a function of making said black ink insoluble. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. An ink set comprising:
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a black series ink; and
a low concentration ink which has lower concentration than a colored ink having higher lightness than said black ink, has a same type color as said colored ink and has an opposite polarity to said black ink to have a function of making said black series ink soluble. - View Dependent Claims (36, 37, 38)
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39. An ink set comprising:
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a cyan ink; and
a low concentration cyan ink having an opposite polarity to a black ink to have a function of making said black ink insoluble and having lower concentration than said cyan ink. - View Dependent Claims (40, 41, 42)
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43. An ink set comprising:
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a black ink;
a yellow ink;
a magenta ink;
a cyan ink; and
a low concentration cyan ink having a function of making at least said black ink insoluble and having lower concentration than said cyan ink. - View Dependent Claims (44, 45, 46)
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47. An ink manufacturing method of manufacturing a low concentration colored ink which is employed together with a black ink and one or a plurality of colored inks having higher lightness than said black ink in a printing apparatus, has lower concentration than said colored ink and has a same type color as said colored ink has, said method comprising the steps of:
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providing a coloring material for said low concentration colored ink having an opposite polarity to said black ink to have a function of making said black ink insoluble; and
adding a solvent to said coloring material to manufacture said low concentration colored ink.
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48. A rubbing resistance improving method used when performing printing with a black ink and a low concentration colored ink having lower concentration than a colored ink which has higher lightness than said black ink, having a same color as said colored ink and having a function making said black ink insoluble, said method comprising the steps of:
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ejecting said black ink in accordance with black ink data; and
ejecting said low concentration ink in accordance with low concentration colored ink data generated based on said black ink data, on said black ink after ejection of said black ink. - View Dependent Claims (49)
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50. An ink ejection data generation method comprising the steps of:
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providing ejection data for a black ink; and
generating ejection data for a low concentration colored ink having lower concentration than a colored ink which has higher lightness than said black ink, having a same type color as said colored ink and having a function of making said black ink insoluble, so that a dot pattern is formed on a printing medium in a pattern according to a predetermined algorithm, on a dot pattern of said black ink formed based on said ejection data for said black ink.
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51. An ink printing method comprising the steps of:
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employing a black ink, one of or a plurality of colored inks having higher lightness than said black ink and a low concentration colored ink which has a lower concentration than said colored ink, has a same type of color as that of said colored ink and has a polarity different from that of said black ink; and
forming a black image by at least partly making said black ink react with said low concentration colored ink without making said black ink react with said colored ink.
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52. An ink-jet printing apparatus for performing printing comprising:
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ink ejection parts respectively ejecting a black ink, one of or a plurality of colored inks having higher lightness than said black ink and a low concentration colored ink which has a lower concentration than said colored ink, has a same type of color as that of said colored ink and has a polarity different from that of said black ink; and
,means for forming a black image by at least partly making said black ink react with said low concentration colored ink without making said black ink react with said colored ink.
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Specification