Gold Electrostatic Ink via Mica-TiO2 Pigment
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Solution Overview
Problem
Conventional electrophotographic printing processes face challenges in creating gold-colored images without using conductive metallic pigments, which can be costly and inefficient.
Innovation Solution
A liquid electrostatic ink composition is developed using a pigment comprising mica coated with titanium dioxide and an additional metal oxide, eliminating the need for conductive metallic pigments by forming a gold pigment, which is combined with a resin and a carrier liquid to create a gold electrostatic ink composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conductive metallic pigments are used to create gold-colored images, then realistic gold color can be achieved, but cost increases and efficiency decreases
Solution Approach 1:
The patent changes the composition parameters of the pigment system by replacing conductive metallic pigments with a non-conductive system comprising mica coated with titanium dioxide and additional metal oxides. This parameter change maintains the gold color appearance while eliminating the inefficiencies associated with conductive pigments, thereby resolving the contradiction between color realism and printing efficiency
Solution Approach 2:
The patent employs a composite pigment structure consisting of mica as the base material, coated with titanium dioxide and additional metal oxides. This composite material approach achieves the desired gold color effect through the synergistic combination of multiple materials, replacing the need for expensive conductive metallic pigments while improving printing efficiency and cost-effectiveness
2Illumination intensity
If conductive metallic pigments are used to create gold-colored images, then realistic gold color can be achieved, but manufacturing cost increases
Solution Approach 1:
The patent modifies the material composition parameters by substituting expensive conductive metallic pigments with a cost-effective system of mica coated with titanium dioxide and metal oxides. This parameter change maintains visual authenticity while significantly reducing manufacturing costs, thereby resolving the contradiction between color realism and manufacturing cost
Solution Approach 2:
The patent adopts more economical materials (mica and metal oxide coatings) that can be readily manufactured and applied, replacing expensive conductive metallic pigments. This substitution achieves the desired visual effect at a lower cost, addressing the contradiction between color quality and manufacturing expense
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 allows for the production of gold-colored images with improved efficiency and cost-effectiveness by using a non-conductive pigment system, achieving realistic gold colors in printing processes.
Implementation Method 1
The charged toner particles adhere to the image areas of the latent image while the background areas remain clean
Data Source
Figure 1
AI summary
Herein is described a liquid electrostatic ink composition comprising a pigment comprising mica coated with titanium dioxide and an additional metal oxide.