Printer calibration scheme
AssigneeInternational Business Machines Corporation
InventorsHo Chong Lee, Mikel J. Stanich
Life of this patent
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Abstract
A system for configuring a first printer according to the grayscale printing characteristics of a second printer is described. Grayscale printing characteristics of a first and a second printer are characterized, and a transform between the grayscale printing characteristics of the first printer and the grayscale printing characteristics of the second printer is generated. This transform is used to modify the first printer grayscale commands so as to emulate the grayscale printing characteristics of the second printer.
Claims37
A method of configuring a first printer to emulate grayscale printing characteristics of a second printer, comprising the steps of:
- characterizing the grayscale printing characteristics of the first printer and the second printer;
- and
- determining a transform between the grayscale printing characteristics of the first printer and the grayscale printing characteristics of the second printer using the characterized grayscale printing characteristics of the first printer and the second printer, the transform for modifying first printer grayscale commands so as to emulate the grayscale printing characteristics of the second printer.
An apparatus for configuring a first printer to simulate grayscale printing characteristics of a second printer, comprising:
- means for characterizing the grayscale printing characteristics of the first printer and the second printer;
- and
- means for determining a transform between the grayscale printing characteristics of the first printer and the grayscale printing characteristics of the second printer, the transform for modifying first printer grayscale commands so as to effect the grayscale printing characteristics of the second printing.
A memory for storing data usable to configure a first printer to simulate grayscale printing characteristics of a second printer, wherein the data is generated by performing the steps of:
- characterizing the grayscale printing characteristics of the first printer and the second printer;
- and
- determining a transform between the grayscale printing characteristics of the first printer and the grayscale printing characteristics of the second printer using the characterized grayscale printing characteristics of the first printer and the second printer, the transform for modifying first printer grayscale commands so as to effect the grayscale printing characteristics of the second printer.
A method of rendering image data, comprising the steps of:
- receiving a grayscale command in a first halftoning device;
- applying a transform to the grayscale command to modify the grayscale command so as to emulate a grayscale characteristic of a second halftoning device;
- and providing the modified grayscale command to the first halftoning device.
An apparatus for rendering image data, comprising:
- means for receiving a grayscale command in a first halftoning device;
- means for applying a transform to the grayscale command to modify the grayscale command so as to emulate a grayscale characteristic of a second halftoning device;
- and
- means for providing the modified grayscale command to the first halftoning device.
A program storage device, readable by computer, tangibly embodying one or more programs of instructions executable by the computer to perform method steps of rendering image data, the method comprising the steps of:
- receiving a grayscale command in a first halftoning device;
- applying a transform to the grayscale command to modify the grayscale command so as to emulate a grayscale characteristic of a second halftoning device;
- and
- providing the modified grayscale command to the first halftoning device.
Dependencies are inferred from the claim text.