Double-Sided Printing ICC Profile Alignment
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Solution Overview
Problem
Current methods for double-sided 'day and night' sign printing lack automatic color management, leading to potential registration errors and visual defects like blurred edges when images on the front and back sides are not aligned, requiring time-consuming trial and error in software programs like Adobe Photoshop for color accuracy.
Innovation Solution
The use of a spectrophotometer to generate International Color Consortium (ICC) profiles for both sides of the print medium, with color patches printed in reflective and transmission modes to ensure accurate alignment and color consistency across both sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual color management methods are used for double-sided printing, then color accuracy can be adjusted through trial and error in software programs, but the process becomes time-consuming and requires manual intervention
Solution Approach 1:
The system performs automatic color management by measuring the printed color patches and generating ICC profiles without requiring manual intervention. The spectrophotometer automatically characterizes the printed patches and the system automatically adjusts color settings, eliminating the need for time-consuming trial and error in software programs like Adobe Photoshop.
Solution Approach 2:
The system uses a spectrophotometer to measure the actual colors printed on the medium and feeds this information back to automatically adjust color management settings. This closed-loop feedback system generates accurate ICC profiles by comparing measured values with target values and automatically correcting deviations, eliminating manual trial and error processes.
2Productivity
If images are printed on both sides of the medium without automatic alignment, then printing can be completed, but registration errors occur leading to blurred edges and visual defects
Solution Approach 1:
The system prints fiducial marks on the first side of the medium before printing the actual images. These pre-printed fiducial marks serve as reference points that enable automatic alignment and registration when the medium is flipped for back-side printing, preventing blurred edges and visual defects.
Solution Approach 2:
The system replaces manual alignment processes with an automated optical measurement and calculation system. The spectrophotometer measures the fiducial marks, and the system automatically calculates position offsets to correct registration errors, eliminating the need for manual mechanical alignment procedures.
3Measurement precision
If color patches are printed for characterization, then ICC profiles can be generated for accurate color management, but additional printing steps are required
Solution Approach 1:
The system combines the color characterization patches with the actual image content in a single printing operation. The fiducial marks and color patches are integrated into the print layout, allowing simultaneous printing of alignment references, color measurement data, and final images in one pass, reducing process complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method ensures low mis-registration errors and maintains color accuracy and consistency across both front-lit and back-lit conditions, enhancing the quality of the combined image viewed at night by aligning and registering images on both sides of the print medium.
Implementation Method 1
characterizing the first color patches using a spectrophotometer
Implementation Method 2
printing third color patches on a second side of the print medium
Data Source
AI summary
Examples herein provide a method. The method includes printing first color patches at a first location on a first side of a print medium. The method includes generating an international color consortium (“ICC”) profile of the first side by characterizing the first color patches using a spectrophotometer. The method includes printing, using the ICC profile of the first side, second color patches at a second location on the first side of the print medium. The method includes printing third color patches on a second side of the print medium, the third patches being a registered mirrored copy of the second patches. The method includes generating an ICC profile of the second side by characterizing the registered second and third patches using the spectrophotometer.