Black Pigment Composition for Electromagnetic Field-Compatible Objects
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Solution Overview
Problem
Carbon black particles used in black-colored objects for electromagnetic or electric field functions often impair or prevent these functions, necessitating the development of alternative pigments that do not interfere with electromagnetic or electric fields.
Innovation Solution
The use of non-conductive spinel pigments, such as copper-chromium-iron-spinel or chromium-iron-nickel-manganese-spinel, in combination with conductive pigments, to minimize interference with electromagnetic or electric fields while maintaining a black coloration, allowing for improved data transfer and field functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If carbon black particles are used for black coloration, then the object achieves good black coloration and cost-effectiveness, but the electromagnetic or electric field function is impaired or prevented
Solution Approach 1:
The patent changes the electrical conductivity parameter of the pigment from conductive (carbon black) to non-conductive (spinel pigments), thereby eliminating the harmful effect on electromagnetic fields while maintaining black coloration. This parameter change resolves the contradiction by selecting pigments with different electrical properties.
Solution Approach 2:
The patent uses composite pigment formulations combining spinel pigments (such as copper-chromium-iron-spinel or chromium-iron-nickel-manganese-spinel) with other non-conductive pigments to achieve both black coloration and electromagnetic compatibility. This composite approach allows optimization of both color properties and electrical properties.
2Reliability
If non-conductive spinel pigments are used, then the electromagnetic or electric field function is improved, but the cost increases compared to carbon black particles
Solution Approach 1:
The patent employs cheaper conductive pigments in specific configurations where electromagnetic interference is already minimized by the device structure, rather than using expensive non-conductive pigments throughout. This selective approach reduces overall costs while maintaining functional requirements.
3Ease of manufacture
If conductive and non-conductive pigments are used in separate components, then cost is reduced by using cheaper conductive pigments, but the electromagnetic field function is restricted
Solution Approach 1:
The patent applies different pigment compositions to different regions or components based on their specific functional requirements. Components where electromagnetic fields are critical use non-conductive spinel pigments, while other components can use cheaper conductive pigments. This localized quality differentiation resolves the contradiction by matching material properties to functional needs.
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 approach enables the reduction or elimination of carbon black particle use, enhancing electromagnetic and electric field functions while maintaining a visually appealing black color, and can be cost-effective by using cheaper conductive pigments in specific configurations.
Implementation Method 1
Spinel pigments have proven to be particularly suitable pigments. They achieve good magnetic and electric field properties with a good visual appearance.
Implementation Method 2
Copper-chromium-iron-spinel pigments or chromium-iron-nickel-manganese-spinel pigments prove to be particularly suitable for black lacquers or colorations.
Data Source
AI summary
In the case of a black-colored object having an electromagnetic or electric field function, wherein the black-colored object is colored by means of pigments, is covered with a component colored by means of pigments, or is coated with a lacquer, wherein the lacquer includes pigments, provision is made for the pigments to be electrically non-conductive.