Color printer technology
First Claim
Patent Images
1. A computer implemented method of reducing a volume of ink used by a color printer in printing a colored image, comprising:
- reading, with a computer, from computer memory a first color value of a pixel of an original colored image object, the color printer configured to use a first volume of ink to print a first color based on the first color value;
determining, with the computer, a second volume of ink sufficient for the color printer to print the first color based on whether the original colored image object has a property indicating it is printed as background or foreground, the second volume of ink less than the first volume of ink;
determining, with the computer, a second color value different from the first color value based on the second volume, the color printer configured to use the second volume of ink to print the first color based on the second color value; and
generating, with the computer, a modified colored image object from the original image object based on the second color value.
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Abstract
The invention provides a method of printing at a POS of register receipts and marketing information in which the required network bandwidth and quantity of ink are both reduced. SVG files are used to specify communications, associated modified image objects are stored locally to the POS, and associated modified image objects are modified version of original objects in which color values are replaced with other color values that result in the same print image, but with printing of less ink.
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Citations
40 Claims
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1. A computer implemented method of reducing a volume of ink used by a color printer in printing a colored image, comprising:
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reading, with a computer, from computer memory a first color value of a pixel of an original colored image object, the color printer configured to use a first volume of ink to print a first color based on the first color value; determining, with the computer, a second volume of ink sufficient for the color printer to print the first color based on whether the original colored image object has a property indicating it is printed as background or foreground, the second volume of ink less than the first volume of ink; determining, with the computer, a second color value different from the first color value based on the second volume, the color printer configured to use the second volume of ink to print the first color based on the second color value; and generating, with the computer, a modified colored image object from the original image object based on the second color value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 25, 26, 27, 28, 29, 30)
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13. A system for reducing a volume of ink used by a color printer in printing a colored image, comprising:
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a storage system; a color printer configured to use a first volume of ink to print a first color based on a first color value of a pixel of an original colored image object; and a processor configured to; read from the storage system the first color value; determine a second volume of ink sufficient for the color printer to print the first color based on whether the original colored image object has a property indicating it is printed as background or foreground, the second volume of ink less than the first volume of ink; determine a second color value different from the first color value based on the second volume, the color printer configured to use the second volume of ink to print the first color based on the second color value; and generate a modified colored image object from the original image object based on the second color value. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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14. A computer implemented method of reducing a volume of ink used by a color printer in printing a colored image, the method comprising:
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reading, with a computer, from computer memory a first color value of a pixel of an original colored image object, the color printer configured to print a first volume of ink to print a first color based on the first color value; determining, with the computer, a second volume of ink sufficient for the color printer to print the first color, the second volume of ink less than the first volume of ink; when the second volume of ink does not exactly correspond to a color value in a color map, determining, with the computer, a second color value by selecting a color value in the color map for which the color printer prints approximately the second volume of ink; and generating, with the computer, a modified colored image object from the original image object based on the second color value. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification