Image Processing Device for Varnish Coating Consistency
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Solution Overview
Problem
Existing image processing technologies fail to maintain consistent image quality between overprint and non-overprint regions during varnish coating, leading to differences in color, linewidth, and screen LPI, causing a strange appearance.
Innovation Solution
An image processing device that distinguishes between overprint and non-overprint regions and adjusts image quality using parameters such as linewidth, contour enhancement, and screen LPI to minimize or enhance differences based on specific settings and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spot coating is performed to improve design properties, then design versatility is improved, but image quality consistency between coated and non-coated portions deteriorates
Solution Approach 1:
The patent applies different image quality processing parameters to different regions of the printed material. Specifically, it distinguishes between overprint regions (where varnish coating is applied) and non-overprint regions, and adjusts parameters such as linewidth, screen LPI, and color intensity differently for each region to compensate for the visual differences caused by varnish coating.
2Reliability
If varnish coating is applied to increase glossiness and water resistance, then protective properties are improved, but color reproducibility deteriorates
Solution Approach 1:
The patent performs image quality processing in advance, before the varnish coating is applied. By adjusting parameters such as color intensity, linewidth, and screen LPI in the image data before printing, the system pre-compensates for the visual effects that will be introduced by the varnish coating, ensuring that the final appearance matches the desired output.
3Strength
If fixing conditions are adjusted to apply more thermal energy, then coating adhesion is improved, but color intensity changes
Solution Approach 1:
The patent changes image quality processing parameters based on the coating conditions. When varnish coating is applied, the system adjusts parameters such as color intensity, linewidth, and screen LPI to compensate for the visual differences caused by the coating, thereby maintaining consistent appearance across coated and non-coated areas while allowing the coating to be applied with standard adhesion conditions.
Data Source
AI summary
An image processing device supplies image data to be used in an image forming apparatus, the image processing device including a control unit configured to process the image data in accordance with an image quality processing parameter, wherein the control unit distinguishes between an overprint region in which overprinting of a coat layer of a transparent material is to be performed on a transfer medium and a non-overprint region in which the overprinting is not to be performed, and adjusts a difference in image quality between the overprint region and the non-overprint region by using the image quality processing parameter.