Laser Array Energy Control for Image Density Uniformity
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Solution Overview
Problem
Image recording apparatuses face a reduction in image density when using laser light emitted from the end laser emission parts due to uneven energy distribution and heat management issues, leading to lower image quality.
Innovation Solution
The apparatus includes a plurality of laser emission parts arranged side by side with an optical system that collects laser light beams onto a moving recording target, and an output control unit that adjusts the energy of laser light emitted from the outermost end laser emission part to be greater than that from the center laser emission part, ensuring consistent image density across the recording target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser light is emitted from the outermost end laser emission part to record an image, then the image density is reduced, but increasing the energy of laser light from the end laser emission part can improve image density uniformity
Solution Approach 1:
The patent applies local quality by making different parts of the laser emission array have different energy characteristics. Specifically, the outermost end laser emission parts are configured to emit laser light with higher energy than the center laser emission parts. This compensates for the natural energy loss at the ends and achieves uniform image density across the entire recording area.
Solution Approach 2:
The patent changes the energy parameter of laser light emitted from different positions in the array. By adjusting the energy of laser light from outermost end emission parts to be greater than that from center emission parts, the system compensates for positional variations and maintains consistent image density throughout the recording area.
2Manufacturing precision
If the energy of laser light from the center laser emission part is increased to match the outermost end, then image density uniformity improves, but the risk of overheating the recording target increases
Solution Approach 1:
The patent applies local quality by making different parts of the laser emission array have different energy characteristics. Specifically, the outermost end laser emission parts are configured to emit laser light with higher energy than the center laser emission parts. This compensates for the natural energy loss at the ends and achieves uniform image density across the entire recording area.
Solution Approach 2:
The patent changes the energy parameter of laser light emitted from different positions in the array. By adjusting the energy of laser light from outermost end emission parts to be greater than that from center emission parts, the system compensates for positional variations and maintains consistent image density throughout the recording area.
3Manufacturing precision
If the energy of laser light from the outermost end laser emission part is increased, then image density at the ends improves, but the complexity of energy control increases
Solution Approach 1:
The patent applies local quality by making different parts of the laser emission array have different energy characteristics. Specifically, the outermost end laser emission parts are configured to emit laser light with higher energy than the center laser emission parts. This compensates for the natural energy loss at the ends and achieves uniform image density across the entire recording area.
Solution Approach 2:
The patent changes the energy parameter of laser light emitted from different positions in the array. By adjusting the energy of laser light from outermost end emission parts to be greater than that from center emission parts, the system compensates for positional variations and maintains consistent image density throughout the recording area.
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 configuration enhances image density uniformity by increasing the temperature of the recording target to the required level, reducing density unevenness and maintaining high image quality without overheating or underheating the recording medium.
Implementation Method 1
an optical system configured to collect a plurality of beams of laser light emitted by the laser emission parts onto the recording target
Implementation Method 2
a plurality of laser emission parts disposed side by side in a predetermined direction for emitting laser light
Implementation Method 3
energy of laser light emitted from an outermost end laser emission part is greater than energy of laser light emitted from a center laser emission part... increasing the temperature of the recording target to the required level
Data Source
AI summary
An image recording apparatus includes a plurality of laser emission parts disposed side by side in a predetermined direction for emitting laser light; an optical system configured to collect a plurality of beams of laser light emitted by the laser emission parts onto the recording target moving relative to the laser emission parts in a direction crossing the predetermined direction; and an output control unit configured to perform control such that energy of laser light emitted from an outermost end laser emission part of the laser emission parts is greater than energy of laser light emitted from a center laser emission part, the outermost end laser emission part emitting laser light to be transmitted through vicinity of an end portion of the optical system, the center laser emission part emitting laser light to be transmitted through a portion other than vicinity of the end portion of the optical system.