LED Head Voltage Stability via Segmented Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing image forming devices face instability in voltage output to LED heads when dividing voltage for driving both the LED heads and sub-ASICs, leading to potential instability in light emission.
Innovation Solution
The image forming device incorporates a voltage output circuit that divides the voltage into two distinct terminals, with a separate voltage output circuit for the LED controller board, ensuring stable voltage supply to the LED heads and the LED controller, using a first and second voltage terminal configuration to maintain consistent light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If voltage is divided into two systems on the LED control board to drive both LED heads and sub-ASIC, then the device complexity is reduced, but the voltage output stability deteriorates
Solution Approach 1:
The patent divides the voltage output function into two separate terminals on the main board: a first voltage terminal connected to the LED control board for driving LED heads, and a second voltage terminal connected to the LED controller for driving the controller. This segmentation ensures that voltage for LED heads and control voltage are supplied independently, preventing mutual interference and maintaining voltage stability for both functions simultaneously.
2Illumination intensity
If large current is applied to the LED head to increase light emission, then the illumination intensity is improved, but the voltage stability deteriorates due to voltage division
Solution Approach 1:
The patent implements separate voltage terminals and wiring paths: the first voltage terminal supplies voltage to the LED control board which then drives the LED heads with required high current, while the second voltage terminal independently supplies stable voltage to the LED controller. This segmentation allows the LED heads to receive sufficient current for high illumination without the voltage being divided or stabilized by the controller's power consumption, thus maintaining voltage stability even under high current conditions.
Data Source
AI summary
An image forming device includes an LED head, a main controller board and an LED controller board. The main controller board comprises a main controller, a voltage output circuit, a first voltage terminal, a second voltage terminal. The voltage output circuit outputs a first voltage via the first voltage terminal and the second voltage via the second voltage terminal. The LED controller board includes a third voltage terminal, a fourth voltage terminal and an LED controller. The third voltage terminal is connected to the first voltage terminal, and the fourth voltage terminal is connected to the second voltage terminal. The LED controller board outputs a voltage according to the first voltage to the LED head. The LED controller is connected to the fourth voltage terminal. A voltage according to the second voltage is input to the LED controller.