Radiographic Detection Panel Non-Metallic Index Design
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Solution Overview
Problem
Existing radiographic image detection apparatuses include metallic indices in the radiographic image, which absorb radiation and interfere with the interpretation of images, potentially causing affected parts to be overlooked.
Innovation Solution
A radiographic image detection apparatus using non-metallic indices formed from UV curable ink on a transparent sheet, allowing radiation to pass through and preventing the indices from appearing in the image, with the indices being printed on a transparent sheet adhered to the carbon plate within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indices are made of metallic materials for visibility and durability, then the indices are durable and visible, but the metallic materials absorb radiation and appear in the radiographic images, potentially obscuring affected areas
Solution Approach 1:
The harmful metallic material is extracted from the index composition. The patent removes the metallic pigment that causes radiation absorption and replaces it with non-metallic materials (white resin powder or UV curable ink) that do not absorb radiation, thereby eliminating the harmful effect while preserving the index function
Solution Approach 2:
The patent creates a visual copy of the traditional metallic index using non-metallic materials. The indices are reproduced with the same visual appearance and positioning function using white resin powder or UV curable ink printed on the carbon plate, maintaining functionality without the harmful radiation-absorbing properties
2Productivity
If UV curable ink is used for forming indices, then foreign substances are prevented from adhering and production time is reduced, but the ink requires UV irradiation for curing
Solution Approach 1:
The patent utilizes the phase transition of UV curable ink from liquid to solid state through UV irradiation-induced polymerization. This phase change allows the ink to be applied in liquid form for easy printing and positioning, then rapidly cured to a solid state that prevents foreign substance adhesion and eliminates the need for prolonged drying time
Solution Approach 2:
The patent replaces the traditional thermal drying process with UV irradiation curing. Instead of using heat and time to evaporate solvents, the system uses UV light to trigger chemical polymerization, rapidly transforming the ink from liquid to solid state and achieving both productivity improvement and foreign substance prevention
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 the generation of images without indices, reducing the risk of overlooking affected parts and improving image interpretation while minimizing foreign substance adhesion and production costs.
Implementation Method 1
The non-metallic material is preferably UV curable ink. The curable ink is printed by an inkjet printer... it is not necessary to dry the UV curable ink for many hours at the time of forming the index
Implementation Method 2
The index is formed of a non-metallic material having transmissivity to the radiation... A transparent sheet is disposed so as to cover part of a surface of the housing
Implementation Method 3
In the indirect-conversion type detection panel, X rays are converted into visible light by phosphors
Implementation Method 4
the visible light is converted into electric charges by photoelectric conversion elements
Implementation Method 5
In the direct-conversion type detection panel, the X rays are directly converted into electric charges by a photoconductor layer
Data Source
AI summary
A radiographic image detection apparatus includes a detection panel and a housing for containing the detection panel. The housing consists of a front surface member, a back surface member, and a carbon plate attached so as to cover an opening formed in the front surface member. The carbon plate is faced to the detection panel. To the carbon plate is adhered a transparent sheet having transmissivity to radiation and visible light. A first index and a second index are printed on an inner surface of the transparent sheet. The first index is a square-frame shaped index showing a radiation detection range of the detection panel. The second index is a cross-shaped index showing a center position of the radiation detection range. The first and second indices are formed of nonmetallic UV curable ink having no radiation shielding properties.