Thermal Paper Particle Coating for Lower-Material Printing
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Solution Overview
Problem
Existing thermal printing papers require a monolithic coating layer that consumes significant raw materials, production time, and energy, limiting productivity and increasing costs.
Innovation Solution
A thermal printing sheet with a coating layer composed of discrete particles, such as fibers or non-fiber particles, randomly and evenly arranged to refract and reflect light multiple times, allowing for faster production and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a monolithic coating layer is used for thermal printing, then color transformation efficiency is maintained, but raw material consumption increases and production time extends
Solution Approach 1:
The coating layer is divided into discrete particles instead of using a continuous monolithic structure. These particles are randomly and evenly distributed across the substrate, allowing light to refract and reflect multiple times between particles, achieving color transformation while reducing material consumption and production time.
2Reliability
If a monolithic coating layer is used for thermal printing, then color transformation efficiency is maintained, but production costs increase
Solution Approach 1:
The coating is segmented into discrete particles that can be applied more efficiently and with less material. The particle structure maintains optical properties for color transformation while reducing manufacturing complexity and cost.
Solution Approach 2:
The invention changes the physical state parameter of the coating from a continuous solid layer to discrete particulate form. This parameter change enables reduced material usage and lower production costs while preserving the essential color transformation function through multiple light reflections between particles.
3Area of stationary object
If a monolithic coating layer is used for thermal printing, then sufficient material coverage is achieved, but energy consumption increases
Solution Approach 1:
The coating is segmented into particles that provide sufficient coverage through their distributed arrangement. The discrete particle structure reduces the total material required to achieve adequate coverage compared to a monolithic layer, thereby reducing the energy required for material processing and application.
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
The sheet achieves higher productivity and lower production costs by using less raw material and energy, while maintaining color transformation efficiency through multiple reflections and fusions upon heating.
Implementation Method 1
the plurality of the particles cause all wavelengths of light passing through the second layer to evenly at least one of refract and reflect a plurality of times
Implementation Method 2
the plurality of the particles cause all wavelengths of light passing through the second layer to evenly at least one of refract and reflect a plurality of times
Implementation Method 3
upon heating of a selected region of the sheet, the particles in the selected region melt and fuse into a continuous portion
Implementation Method 4
upon heating of a selected region of the sheet, the particles in the selected region melt and fuse into a continuous portion
Implementation Method 5
the first layer reflects a wavelength of a specific color
Data Source
AI summary
A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.