System for distributing and controlling color reproduction at multiple sites
DCFirst Claim
1. A color rendering apparatus comprising:
- a printer which utilizes a plurality of different colorants which number more than four in reproduction on media, wherein two or more of said plurality of said different colorants are neutral in hue; and
a processor enabling said reproduction on media in accordance with a color transformation, in which said processor receives one of color image data in terms of said different colorants or color image data in terms of fewer than said number of said different colorants, wherein at least one of the neutral colorants is at least partly exchangeable with one or more of said different colorants.
2 Assignments
Litigations
1 Petition
Accused Products
Abstract
The system provides for controlling color reproduction of input color image data in a network having nodes (or sites). The system distributes the input color image data from one of the nodes to other nodes, and provides data structures in the network. The system has means for providing color calibration data at each node characterizing output colors (colorants) of the rendering device of the node, and means for producing at each node, responsive to the color calibration data of the rendering device of the node, information for transforming the input color image data into output color image data at the rendering device of the node. The rendering device of each node renders a color reproduction responsive to the output color image data, wherein colors displayed in the reproduction at the rendering device of each node appear substantially the same within the output colors attainable by the rendering devices.
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Citations
38 Claims
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1. A color rendering apparatus comprising:
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a printer which utilizes a plurality of different colorants which number more than four in reproduction on media, wherein two or more of said plurality of said different colorants are neutral in hue; and a processor enabling said reproduction on media in accordance with a color transformation, in which said processor receives one of color image data in terms of said different colorants or color image data in terms of fewer than said number of said different colorants, wherein at least one of the neutral colorants is at least partly exchangeable with one or more of said different colorants. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of color rendering on a printer having a plurality of non-neutral colorants and a plurality of neutral colorants, comprising the steps of:
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transforming input color image data into output color image data in units of said non-neutral colorants and said neutral colorants with the aid of a processor, in which said input color image data is expressible in device independent units of color, wherein at least one of said neutral colorants is at least partly exchangeable with one or more of said non-neutral colorants or other of said neutral colorants; and transmitting said output color image data to said printer. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of preparing a color transformation useable in rendering image data on a printer having a plurality of non-neutral colorants and a plurality of neutral colorants comprising the steps of:
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rendering a calibration image comprising varying amounts of said non-neutral colorants and said neutral colorants; measuring in device independent units of color said rendered calibration image; and producing one or more transforms useable in converting colors expressed in device independent units into amounts of said non-neutral colorants and said neutral colorants in which at least one of the neutral colorants is exchangeable with one or more other neutral colorants or said non-neutral colorants. - View Dependent Claims (18, 19)
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20. A computer-readable medium encoded with a program for controlling the rendering of color by a color rendering apparatus utilizing a plurality of non-neutral colorants and a plurality of neutral colorants comprising:
software for enabling transformation of input color image data expressible in device independent units of color into output color image data in units of non-neutral and neutral colorants, wherein at least one of said neutral colorants is at least partly exchangeable with one or more of said non-neutral colorants or other of said neutral colorants, in which said transformation affects the utilization of colorants by a color rendering apparatus. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A color rendering apparatus comprising:
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a printer which utilizes a plurality of different colorants which number more than four in reproduction on media, wherein a plurality of said different colorants are neutral in hue; and said printer renders output color image data produced by a transformation which converts input image data represented in color coordinates numbering fewer than said number of said different colorants into said output color image data expressed in terms of said different colorants, wherein at least one of said neutral colorants is at least partly exchangeable with one or more of said different colorants. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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Specification