Color Plane Correction for Inkjet Registration Errors
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Solution Overview
Problem
Inkjet printing systems face challenges in maintaining accurate color registration across multiple color planes due to physical properties of the print medium, conveyance, ink application, and drying processes, leading to registration errors that restrict the range of suitable applications, especially when paper weight is reduced or ink coverage varies.
Innovation Solution
A method involving the determination of global and local color plane correction values to adjust for color registration errors, where processors analyze initial print copies to calculate correction values and apply local adjustments to achieve finer corrections, particularly in documents with mixed content like text and images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If global color plane correction values are used for all documents, then the registration errors are reduced, but documents with varying ink coverage and local distortion patterns cannot achieve optimal local alignment
Solution Approach 1:
The patent divides the correction process into two segments: global color plane correction values that apply to all documents, and local color plane correction values that are specific to individual documents or regions. This segmentation allows the system to maintain broad compatibility while adapting to local variations in ink coverage and distortion patterns.
Solution Approach 2:
The patent implements local color plane correction values that are determined for specific documents or regions based on their unique characteristics such as ink coverage patterns and local distortion. This allows different parts of the printing system to be optimized for their specific requirements, achieving higher precision for documents with varying local conditions.
2Manufacturing precision
If control variables are strictly managed to maintain registration accuracy, then color plane alignment is improved, but the range of suitable print applications is restricted
Solution Approach 1:
The patent dynamically adjusts correction parameters (global and local color plane correction values) based on the specific characteristics of each print job, including paper weight, ink coverage, and document type. This allows the system to maintain high registration accuracy across a wide range of print applications by adapting parameters to match the specific conditions of each job.
3Manufacturing precision
If local color plane correction values are determined for each document, then finer corrections are achieved, but the processing complexity increases
Solution Approach 1:
The patent determines global color plane correction values in advance for all documents, which provides a baseline correction that applies universally. This preliminary action reduces the complexity of subsequent local corrections, as the system only needs to adjust for local variations rather than calculating all corrections from scratch for each document.
Data Source
AI summary
A method for performing color-to-color correction for printing multiple copies of a print job having one or more documents is disclosed. A first copy of the print job is printed using a plurality of color planes. A first plurality of color registration errors produced during the printing of the first copy of the print job is determined. For each document in the print job, one or more processors are used to determine a global color plane correction value for each color plane error based on the first plurality of color registration errors. The global color plane correction values are adjusted locally based on the first plurality of local color plane correction values. A second copy of the print job is printed using the locally adjusted global color plane correction values for each document in the print job.