Printer image processing system with customized tone reproduction curves
AssigneeXerox Corporation
InventorsKatherine E. Hayes, Dale Knutsen
Life of this patent
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Abstract
A customized tone reproduction curve is created by the operation of an independent processor system associated with the image processor for a full color printer. Data for the customized tone curves is entered through a customizing interface according to the discretion of the user. The customized reproduction tone curve is then combined with the original color data to generate customized color image data. The customized color data is then calibrated by combination with the current calibration tone reproduction curve.
Claims17
A system for processing a color image in a printing machine having color rendering characteristics comprising:
- an image processor for generating original color image data from an original item to be printed for the purpose of forming an electrostatic latent image on a photoconductive belt of said printing machine;
- said system further comprising a customization manager comprising:
- a customization user interface adapted to allow a user to enter data for generating customized tone reproduction curves;
- a customization processor constructed to receive the data entered by said user at said customization interface and generate at least one set of customized tone reproduction curves;
- a customization memory for storing said at least one set of customized tone reproduction curves for future use;
- wherein said image processor and said customization processor are connected to combine said at least one set of customized tone reproduction curves with said original color image data to generate customized original color image data;
- and
- a color maintenance processor including a memory for storing at least one set of calibration tone reproduction curves and wherein said color maintenance processor combines said customized original color image data with said at least one set of calibration tone reproduction curves to generate calibrated and customized original color image data.
A customization system for generating independent tone reproduction curves for use in an image processing system of a printing machine having color rendering characteristics, said image processing system having a color maintenance processor for combining at least one set of calibration tone reproduction curves with original color image data, and adjusting said color image data to compensate for said color rendering characteristics;
- said customization system comprising:
- a customization user interface adapted to allow a user to enter data for generating customized tone reproduction curves;
- a customization processor constructed to receive the data entered by said user at said customization interface and generate at least one set of customized tone reproduction curves;
- a customization memory for storing said at least one set of customized tone reproduction curves for future use;
- and
- wherein said color maintenance processor and said customization processor are connected to combine said at least one set of customized tone reproduction curves with said original color image data to generate customized original color image data, and further wherein said color maintenance processor is adapted to combine said customized original color image data with said at least one set of calibration tone reproduction curves to generate calibrated and customized original color image data.
In an image processing system of a printing machine, a customization method for generating customized tone reproduction curves for use in said image processing system comprising the steps of:
- generating data representing an original color image from an original item to be printed;
- entering data for generating customized tone reproduction curves;
- processing said entered data and generating at least one set of customized tone reproduction curves;
- storing said at least one set of customized tone reproduction curves for future retrieval and use;
- and
- processing said at least one set of customized tone reproduction curves by combining said at least one set of customized curves with said generated original color image data to generate customized original color image data;
- generating at least one set of calibration tone reproduction curves;
- storing said at least one set of calibration tone reproduction curves;
- and
- calibrating said customized original color image data by combining said customized color image data with said at least one set of calibration tone reproduction curves to generate calibrated customized original color image data.
Dependencies are inferred from the claim text.