Thermal Printer Power-Cycle Control for Multicolor Accuracy

The patent changes the parameter of power supply cycle timing to differentiate between color developing portions. By setting different average cycles for different colors (e.g., longer cycle for yellow, shorter for magenta/cyan), the system achieves precise color control without requiring complex high-performance equipment, thus resolving the contradiction between printing precision and device cost

The patent implements periodic power supply to heat generating elements with different cycle timings for different colors. This periodic action with varied timing allows accurate control of each color developing layer's thermal exposure, achieving multicolor printing precision while using a cost-effective periodic control mechanism rather than continuous complex control

The patent segments the power supply control by color developing portion, assigning different average cycles to different colors (e.g., yellow layer gets longer cycle, magenta/cyan layers get shorter cycles). This segmentation allows each color to receive optimized thermal treatment independently, improving color development accuracy while maintaining relatively simple control logic for each segment

The patent applies local quality by giving different power supply cycle characteristics to different color developing portions based on their specific requirements. Each color layer receives tailored thermal exposure timing (local optimization) rather than uniform control, achieving high color accuracy without requiring globally complex control systems