Photo Printer Color Correction via Extension Data Update
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Solution Overview
Problem
The existing color correction systems for photo printers face challenges in accurately representing colors due to differences in print paper characteristics, leading to color variation issues, which are exacerbated by the limited 53-bit color correction factor, requiring extension color correction data to correct colors effectively.
Innovation Solution
A color correction system and method that involves a mobile application accessing a service server to download and update extension color correction data, comparing versions of color correction data, and using this data to correct colors on the photo printer, incorporating required energy and sensitivity parameters for accurate printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the existing 53-bit color correction factor is used, then the smart sheet can be fabricated with basic color correction capability, but the color correction precision is insufficient to represent required colors accurately
Solution Approach 1:
The patent extends the color correction factor from 53 bits to 144 bits by adding new dimensions (parameters) to the existing data structure. This dimensional expansion provides sufficient precision to represent required colors accurately while maintaining compatibility with existing smart sheet infrastructure through the extended data format.
Solution Approach 2:
The patent introduces additional parameters to the color correction data structure, transforming it from a 53-bit to a 144-bit format. This parameter change enables more precise color correction by capturing additional characteristics of print paper variations, thereby resolving the insufficiency of the original 53-bit factor.
2Measurement precision
If new color correction data is generated whenever new print paper is produced, then color accuracy can be maintained, but users must be updated on such information before print paper is marketed requiring manual intervention
Solution Approach 1:
The patent implements an automatic update mechanism where the photo printer autonomously checks for new color correction data corresponding to installed print paper and downloads updates without user intervention. This self-service approach maintains color accuracy while eliminating the need for users to manually track or update color correction information.
Solution Approach 2:
The patent establishes a feedback loop where the photo printer continuously checks whether updated color correction data is available on the server and automatically downloads it when new print paper is installed. This feedback mechanism ensures color accuracy is maintained while automating the update process, removing the burden from users.
3Reliability
If the characteristics of print paper vary due to different production dimensions, then color variation between printers emerges, but maintaining consistent color correction requires complex data management
Solution Approach 1:
The patent extends the color correction data structure to 144 bits, incorporating additional parameters that capture variations in print paper characteristics across different production batches. This extended parameter set enables consistent color correction despite variations in coating thickness, compound mixtures, and other production dimension differences.
Solution Approach 2:
The patent segments the color correction data into structured components including extended parameters that specifically address production variation characteristics. This segmentation allows the system to manage complex color correction requirements by organizing data into manageable, targeted parameters that address specific sources of variation.
Data Source
AI summary
A color correction system for a photo printer comprises: a mobile application which accesses a service server, downloads newly updated extension color correction data from the service server, and stores the newly updated extension color correction data; a control unit which compares a version of the extension color correction data with a version of first color correction data stored in the photo printer and performs control so that the extension color correction data stored in the photo printer is updated based on a result of the comparison; and a short-distance communication module which transmits the first extension color correction data to the photo printer while operating in conjunction with the photo printer.