Multicolor Overprint Control for Intermittent Inkjet Printers
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Solution Overview
Problem
Existing digital inkjet print systems face challenges with multicolor overprint on intermittent print devices due to issues like overlapped and misaligned prints, which are not effectively addressed by current technologies.
Innovation Solution
A method and apparatus for controlling multicolor overprint on intermittent print devices, involving the synchronization of color modules during uniform-speed sections, adjusting spacing between modules, and coordinating inkjet print operations to ensure precise alignment and seamless superimposition of colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital inkjet print system is applied to intermittent print device, then print flexibility and personalization are improved, but print alignment precision deteriorates due to intermittent motion causing overlapped and misaligned prints
Solution Approach 1:
The control system performs preliminary actions by detecting the start time signal of the uniform-speed section before actual printing begins. The system pre-calculates the timing and spacing for multiple color modules, ensuring that each module is positioned and ready to print at the correct moment, thereby preventing alignment issues caused by intermittent motion
Solution Approach 2:
The system dynamically adjusts the spacing between adjacent color modules based on the intermittent motion characteristics. By making the spacing adaptive rather than fixed, the system maintains precise alignment despite the varying motion states of the print device during operation
2Adaptability or versatility
If multiple color modules are used for multicolor print, then color print capability is improved, but print alignment precision deteriorates due to spacing issues between modules
Solution Approach 1:
The system changes the spacing parameter between adjacent color modules to be N times the motion distance in the uniform-speed section. This parameter adjustment ensures that when the print medium moves through the uniform-speed section, each color module deposits ink at the correct position, achieving precise color overprint alignment
Solution Approach 2:
The control system uses feedback from the start time signal detection to continuously monitor and adjust the timing and positioning of each color module. This feedback mechanism ensures that even with multiple color modules, the intermittent motion does not cause misalignment, as each module's operation is synchronized based on real-time detection
3Productivity
If color modules operate independently, then print productivity is improved, but print quality deteriorates due to lack of synchronization causing misaligned multicolor overprint
Solution Approach 1:
The control system serves multiple color modules simultaneously using a universal control mechanism. The same control logic and synchronization method is applied to all color modules, enabling them to operate independently yet remain coordinated. This universal approach maintains both high productivity through parallel operation and high quality through synchronized color overprint
Data Source
AI summary
Disclosed are a multicolor overprint control method and device applicable to an intermittent printing apparatus. According to the operating characteristic of the intermittent printing apparatus, the method solves the problems of overlap and inaccurate overprint of various colors during intermittent printing by controlling the relationship between the distance between adjacent color group modules of different colors and the motion distance between uniform segments of the intermittent printing apparatus. In addition, the method also sets different inkjet printing modes in accordance with whether the detected inkjet printing of the same color group module is in a first period, thereby solving the problems of printing media waste and discontinuous printing data. The method achieves multicolor digital inkjet printing by combining the unique motion mode of the printing media thereof, and makes printing contents flexible and changeable on the basis of guaranteeing printing efficiency.