Scanner Light Diffusion Sheet for Mirror Reflection Reading
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Solution Overview
Problem
Conventional copiers fail to accurately read golden or silver characters with mirror reflection properties due to the lack of reflected light, resulting in them appearing black, and existing solutions involve complex and costly structures with multiple light sources and light-transmitting members.
Innovation Solution
An image processing apparatus that includes a scanner section with a light diffusion sheet to diffuse light reflected from the original document, allowing the area determination section to identify mirror reflection areas and replace their color in the image data, using a semi-transparent detection sheet with a diffuse reflection surface to enhance readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a copier uses a conventional structure with a single light source and image sensor to read original documents, then the structure remains simple and cost-effective, but mirror reflection areas (golden or silver characters) appear black due to lack of reflected light towards the image sensor
Solution Approach 1:
A light diffusion sheet is introduced as an intermediary component between the light source and the original document. This diffusion sheet scatters the light in multiple directions, enabling mirror reflection areas to reflect light towards the image sensor. The diffusion sheet acts as a mediator that transforms the directional light into scattered light, solving the reading accuracy problem without requiring complex multi-light-source structures
Solution Approach 2:
The patent changes the optical parameters of the light source by using a light diffusion sheet that modifies light distribution. Instead of using multiple light sources with specific positioning, the system uses a single light source whose light characteristics are transformed through diffusion, achieving the same effect as multiple light sources but with simpler structure
2Measurement precision
If a copier uses multiple light sources and light-transmitting members to read mirror reflection areas, then the reading accuracy of golden or silver characters is improved, but the structure becomes complicated and the cost increases
Solution Approach 1:
The light diffusion sheet serves as a cost-effective intermediary that replaces the need for multiple light sources and light-transmitting members. By introducing this single diffusion component, the system achieves improved reading accuracy of mirror reflection areas without incurring the high manufacturing costs associated with complex multi-component structures
Solution Approach 2:
The light diffusion sheet is a relatively simple and inexpensive component compared to multiple light sources and light-transmitting members. Using this disposable or replaceable diffusion sheet provides an economical solution for achieving accurate reading of mirror reflection areas, reducing overall system manufacturing cost
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
Enables proper reading and color replacement of mirror reflection areas, improving image quality without the need for complex and expensive structures, allowing users to designate colors for these areas, thus enhancing the functionality and cost-effectiveness of the image processing system.
Implementation Method 1
a light diffusion sheet to diffuse light reflected from the original document
Implementation Method 2
using a semi-transparent detection sheet with a diffuse reflection surface to enhance readability
Data Source
AI summary
An image processing apparatus comprises a scanner section and an area determination section. The scanner section reads the light reflected from an original document after the light penetrates a light diffusion sheet to output first image data, wherein the light diffusion sheet has a surface for diffusing the light reflected from the original document including a mirror reflection area; and the area determination section determines the mirror reflection area with respect to the first image data output from the scanner section.