Fine Line Printed Matter for High-Definition Color Patterns
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Solution Overview
Problem
Conventional printing methods struggle to produce high-definition printed matter with continuous color patterns beyond 2500 LPI, as higher resolutions require complex processes and are difficult to mass-produce, and high-definition prints above 350 LPI are not visually recognizable.
Innovation Solution
The use of printed matter with a combination of fine lines, each 100 μm or less in width, and spacings between adjacent lines that are 50 times or less the narrower line's width, allowing for high-definition and visually recognizable continuous color patterns through specific line patterns and intaglio printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photolithography is used to achieve printed matter of more than 2500 LPI, then manufacturing precision is improved, but device complexity increases and productivity decreases
Solution Approach 1:
The invention segments the continuous color pattern into discrete line elements with specific width and spacing relationships. By dividing the pattern into lines 100 μm or less in width with spacing 50 times or less the narrower line's width, the patent achieves high definition printing through simple gravure offset printing without requiring complex photolithography processes.
Solution Approach 2:
The invention changes the critical parameters of line width (100 μm or less) and spacing (50 times or less the narrower line's width) to achieve high-definition visual recognition. This parameter optimization allows conventional gravure offset printing to produce results previously only achievable through complex photolithography processes.
2Ease of manufacture
If conventional halftone dot methods are used for color printing, then ease of manufacture is improved, but manufacturing precision deteriorates due to limited resolution
Solution Approach 1:
Instead of using conventional halftone dots to create color patterns, the invention inverts the approach by using fine lines with controlled spacing and width. This inversion of the traditional halftone methodology enables high-definition continuous color patterns while maintaining compatibility with simple gravure offset printing processes.
3Manufacturing precision
If line width and spacing are reduced to achieve higher LPI, then manufacturing precision is improved, but ease of operation deteriorates due to visual unrecognizability
Solution Approach 1:
The invention replaces the conventional halftone dot mechanical system with a fine line system where visual recognition is achieved through optimized line spacing rather than dot size variation. The specific spacing relationship (50 times or less the narrower line's width) creates continuous color patterns that are both visually recognizable and highly defined.
Data Source
AI summary
Printed matter having a continuous color pattern, such as a high-definition fine printed design pattern. The printed matter has a printed portion on a surface of a printing substrate. The printed portion is formed of an ink and visually recognized as a continuous color pattern. Further, the printed portion is constituted of a combination of a plurality of lines each being formed of an ink and having a line width of 100 μm or less. Of the plurality of lines, two adjacent lines have a spacing there between which is 50 times or less the line width of the line that is the narrower one of the two lines defining the spacing.