Operator adjustable color image processing
First Claim
1. A printing system in which the color of a copy being formed from an original document is adjustable, including:
- means for scanning the original document and measuring a set of primary color densities therein;
operator controllable means, in communication with said scanning means, for converting the measured set of primary color densities to signals corresponding to a set of operator selected subtractive primary color densities, said converting means comprising first means for changing the measured set of primary color densities to a set of colorimetric coordinates, operator abjustable means, in communication with said changing means, for varying the set of colorimetric coordinates, said varying means varying the set of colorimetric coordinates to adjust independently or in combination with one another darkness, hue or saturation of the set of subtractive primary color densities and second means, in communication with said varying means, for changing the operator abjusted set of colorimetric coordinates to signals corresponding to the set of operator selected subtractive primary color densities; and
a marking engine which receives the signals from said converting means and forms a copy of the original document in response thereto.
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Accused Products
Abstract
An operator controllable apparatus which adjusts the color of a copy being reproduced from a multi-colored original document. The original document is scanned and a set of primary color densities therein measured. The measured set of primary color densities is changed to a set of colorimetric coordinates. The operator adjusts the set of colorimetric coordinates so that the copy has the desired hue, saturation and darkness. The operator adjusted set of colorimetric coordinates is transformed into a set of subtractive primary color densities. This set of subtractive primary color densities controls the marking engine to form a copy having the desired hue, saturation and darkness.
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Citations
8 Claims
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1. A printing system in which the color of a copy being formed from an original document is adjustable, including:
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means for scanning the original document and measuring a set of primary color densities therein; operator controllable means, in communication with said scanning means, for converting the measured set of primary color densities to signals corresponding to a set of operator selected subtractive primary color densities, said converting means comprising first means for changing the measured set of primary color densities to a set of colorimetric coordinates, operator abjustable means, in communication with said changing means, for varying the set of colorimetric coordinates, said varying means varying the set of colorimetric coordinates to adjust independently or in combination with one another darkness, hue or saturation of the set of subtractive primary color densities and second means, in communication with said varying means, for changing the operator abjusted set of colorimetric coordinates to signals corresponding to the set of operator selected subtractive primary color densities; and a marking engine which receives the signals from said converting means and forms a copy of the original document in response thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification