Printing Device Bending Region Liquid Coverage Control
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Solution Overview
Problem
Existing printing technologies face challenges in producing bendable printed matter due to issues like cracking and peeling of the cured layer, requiring complex optimization of ink and immersion liquid compatibility, and imposing a burden on users with immersion steps.
Innovation Solution
A printing device and method that utilize a control unit to acquire bending information and execute a first print mode with reduced liquid coverage in the bending region, forming slits or varying dot patterns to distribute force and prevent cracking, while maintaining image continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If liquid coverage is increased to improve image quality, then print quality is improved, but resistance to bending deteriorates due to cracking and peeling
Solution Approach 1:
The patent applies different liquid coverage levels to different regions of the medium. Specifically, the bending region has reduced liquid coverage compared to non-bending regions, allowing the printed matter to bend without cracking while maintaining image quality in visible areas. The control unit adjusts dot coverage based on region type (bending vs. non-bending) to optimize both print quality and bendability.
2Strength
If liquid coverage is reduced to improve resistance to bending, then resistance to bending is improved, but print quality deteriorates
Solution Approach 1:
Instead of uniformly reducing liquid coverage across the entire medium, the patent selectively reduces coverage only in the bending region while maintaining normal or higher coverage in non-bending regions. This localized approach preserves print quality in visible areas while enabling bendability in specific regions where bending is intended.
3Strength
If immersion in predetermined liquid is performed to reduce rigidity, then resistance to bending is improved, but device complexity and ease of operation worsen due to additional steps and optimization requirements
Solution Approach 1:
The patent extracts and eliminates the immersion step from the printing process. Instead of requiring users to immerse the printed matter in predetermined liquid after printing, the method directly controls liquid coverage during the printing stage to achieve the desired bendability. This integration of the bending function into the printing process itself removes the need for separate immersion operations and material compatibility optimization.
Data Source
AI summary
A printing device can produce a bendable printed matter. The printing device acquires bending information including information of a bending region that is a region to be bent in a medium and information of the direction of the bending, and execute a first print mode in which printing is performed based on the bending information and a second print mode in which printing is performed differently from the first print mode. In a case of printing, in a printing region including the bending region of the medium, an image at least partially continuous in the direction of the bending, the coverage by dots of a liquid discharged to the bending region when printing the image in the first print mode is made lower than the coverage by dots of the liquid discharged to the bending region when printing the image in the second print mode.