Preview Data Generation for Inkjet Printing Color Accuracy
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Solution Overview
Problem
Existing preview data generation methods for inkjet printing do not accurately reflect the coloration of the recording medium, leading to inaccuracies in the preview image displayed, as they fail to consider the color of the recording medium when combining image data with background color information.
Innovation Solution
A preview data generating apparatus and method that incorporates the base color of the recording medium into the print data conversion process, allowing for the accurate reflection of the recording medium's color in the preview image by using a base color input unit, data conversion unit, and base color incorporation unit to generate displayable preview data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If preview data is generated by simply combining image data with background color replacement, then the preview generation process is simple and fast, but the preview image does not accurately reflect the actual printed image coloration
Solution Approach 1:
The patent applies parameter changes by transforming print data from a printable format (CMYK) to a displayable format (RGB) through specific conversion parameters. The data conversion unit changes the color space parameters and applies base color composition to accurately represent how the recording medium color affects the final printed image, thereby improving preview accuracy without excessive complexity.
Solution Approach 2:
The patent introduces an intermediary data conversion unit that mediates between the print data (CMYK format) and the display device (RGB format). This intermediary converts the print data into displayable preview data by incorporating base color information, serving as a bridge that enables accurate color representation while maintaining system simplicity.
2Measurement precision
If the preview image displays the image data without considering the recording medium color, then the preview generation is fast and simple, but the preview does not show the actual coloration effect on different colored recording media
Solution Approach 1:
The patent applies preliminary action by pre-processing the print data to incorporate base color information before the actual preview display. The data conversion unit preliminarily converts the CMYK print data into RGB preview data with base color composition already integrated, so that when the preview is displayed, it immediately shows the accurate coloration effect without requiring additional real-time processing during display.
3Measurement precision
If existing preview methods are used, then the preview data generation is straightforward, but the preview image fails to account for the interaction between white ink base layer and colored inks on dark recording media
Solution Approach 1:
The patent applies parameter changes by transforming the color space parameters from CMYK (printable) to RGB (displayable) format. The data conversion unit modifies the color parameters to account for the interaction between white ink base layer and colored inks on dark recording media, accurately representing the final coloration while maintaining manageable processing complexity through systematic parameter transformation.
Data Source
AI summary
A preview data generating apparatus to generate preview data, which is used to display a preview image representing an image to be printed on a recording medium, in reflection of a color of the recording medium, is provided. The preview data generating apparatus includes a base color input unit to input a base color being the color of the recording medium, a print data input unit to input print data in a printable format, which is used to print the image, a data conversion unit to convert the print data into a displayable format suitable for a display device, and a base color incorporated data generating unit to generate the preview data representing the image to be printed by incorporating the displayable-formatted data and the base color.