Method for correcting unadjusted printing data on the basis of colormetrically measured reference sheet
First Claim
1. A method for correcting digitized image data in the prepress stage when using printing presses having a device-independent color profile in the main printing stage, the method comprising the steps of:
- measuring colorimetrically a reference sheet and producing a first image file in a device-independent color space;
converting a second image file associated with the reference sheet in a device-dependent color space into a third image file in a device-independent color space using a device-independent color profile belonging to the printing press to be used;
comparing the first and third image files; and
performing alterations on the second image file associated with the reference sheet or alterating a printing process in the printing press to be used if tolerance limits are exceeded.
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Abstract
A method for correcting digitized image data in the prepress stage when using printing presses having a device-independent color profile in the main printing stage, having the following method steps:
measurement of a reference sheet and production of an image file in a device-independent color space,
conversion of an image file belonging to the reference sheet in a device-dependent color space into a further image file in a device-independent color space using the device-independent color profile belonging to the printing press to be used,
comparison of the two device-independent image files.
performing alterations on the device-dependent image file associated with the reference sheet or alteration of the printing process in the selected printing press if tolerance limits are exceeded.
30 Citations
11 Claims
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1. A method for correcting digitized image data in the prepress stage when using printing presses having a device-independent color profile in the main printing stage, the method comprising the steps of:
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measuring colorimetrically a reference sheet and producing a first image file in a device-independent color space;
converting a second image file associated with the reference sheet in a device-dependent color space into a third image file in a device-independent color space using a device-independent color profile belonging to the printing press to be used;
comparing the first and third image files; and
performing alterations on the second image file associated with the reference sheet or alterating a printing process in the printing press to be used if tolerance limits are exceeded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification