Light Emitting Element Drive Control for Inkjet Printer Drying
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Solution Overview
Problem
Existing light emitting element drive control systems for inkjet printers face challenges in efficiently controlling the power source voltage for multiple laser light emitting units, leading to variations in drive voltages and potential thermal issues, which affect the stability and efficiency of ink drying processes.
Innovation Solution
A control device that supplies a common power source voltage to multiple light emitting elements, determines voltage ranges for proper current control operations, and sets the power source voltage within a determined range to ensure stable and efficient light emission, minimizing thermal stress and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a common power source voltage is applied to multiple laser light emitting element units, then the power source voltage can be controlled to be higher than or equal to the minimum voltage required for stable current control, but variations in drive voltages occur among individual units affecting stability
Solution Approach 1:
The patent applies local quality by allowing each laser light emitting element unit to have its own drive voltage adjustment capability while sharing a common power source. The control device individually adjusts the drive voltage for each unit based on its specific characteristics, ensuring stable current control for each element without requiring identical voltages across all units.
2Reliability
If the power source voltage is increased to ensure stable current control for all units, then current control stability is improved, but thermal stress and power consumption increase
Solution Approach 1:
The patent implements dynamics by making the drive voltage adjustable and adaptable for each laser light emitting element unit. Rather than using a fixed high voltage to ensure stability for all units, the control device dynamically adjusts each unit's voltage to the minimum necessary level for stable operation, reducing overall power consumption and thermal stress while maintaining reliability.
3Manufacturing precision
If individual current control is performed for each light emitting element, then proper light emission quantity is achieved, but the system complexity increases
Solution Approach 1:
The patent applies universality by using a single control device that performs multiple functions: it manages the common power source voltage, individually adjusts drive voltages for each laser unit, and controls current for each element. This centralized multi-functional approach achieves precise light emission control without requiring separate complex control systems for each unit.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures stable and efficient ink drying by maintaining optimal power source voltage levels across all light emitting elements, reducing thermal stress and improving the overall efficiency of the inkjet printing process.
Implementation Method 1
laser beams emitted from plural laser light emitting element units may be used
Implementation Method 2
The light quantities of laser beams are controlled according to the degrees of drying of ink through constant-current control
Data Source
AI summary
A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.