Press profile production method, color management method, printed sheet, and color management system
OwnerYoshikazu Shimamurainventor
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Abstract
Press profile production, color management and printed sheet systems and methods provide for a highly accurate press profile that is unaffected by in-plane irregularity in density due to the ink keys unique to a given press in a printing process in which color management is performed. Thus, more accurate color matching can be achieved between a first press and another press or other device, among other advantages. A press profile production system according to an embodiment of the invention provides a print layout with a profiling target disposed within the width of one ink key of the press.
Claims13
1 A method, comprising:
- printing a profiling target including a plurality of different patches onto an area of a printing surface that is located within an ink key width of an ink key of a press having one or more ink keys;
- measuring a color of said patches to produce colorimetric data;
- and
- processing the calorimetric data to produce a press profile of the press.
2 The method of claim 1, wherein the patches comprise a plurality of colors disposed at least pseudo randomly within the profiling target.
3 A profiling target produced according to the method of claim 1.
4 A method for color matching between a press and an other device, comprising:
- receiving colorimetry data corresponding to patches in a profiling target printed with said press in a print layout wherein said profiling target is printed in an area of a printing surface located within an ink key width of an ink key of said press;
- processing the colorimetric data to produce a press profile of the press;
- and
- color matching the press with a color characteristic of the other device in accordance with the press profile.
5 The method of claim 4 wherein the patches comprise a plurality of colors disposed at least pseudo randomly within the profiling target.
6 The method of claim 4 wherein the other device is selected from a group including a digital still camera, a digital video camera, an image scanner, a monitor, a digital proofer, an ink jet printer, and another press.
7 The method of claim 5 wherein the other device is selected from a group including a digital still camera, a digital video camera, an image scanner, a monitor, a digital proofer, an ink jet printer, and another press.
8 A color management method, comprising:
- receiving a printed sheet printed on a press and including a color;
- receiving a profiling target including a plurality of different patches, at least one patch being located in an area of a printing surface located within an ink key width of an ink key of the press;
- and
- forming a profile of said press in accordance with said profiling target;
- and
- managing the color in accordance with at least one of the color and a density of the patch.
9 A method, comprising:
- receiving a profiling target;
- receiving a printed control sheet printed on a press, the control sheet including a patch in a control patch located in an area on the printed sheet located within an ink key width of an ink key corresponding to the profiling target, the control patch including a gray patch produced by at least three colors of ink, and
- conducting color management in accordance with a density of the gray patch.
10 The method of claim 9, wherein the gray patch is shadow gray.
11 The method of claim 9, wherein the gray patch is medium gray.
12 The method of claim 9, wherein the gray patch includes a value between medium gray and shadow gray.
13 A control sheet produced according to the method of claim 9.