Liquid-absorbing body with dual-layer cellulose base for ink diffusion
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Solution Overview
Problem
Existing ink absorbing bodies for inkjet printers have poor ink absorption characteristics, particularly poor ink diffusivity, leading to slow diffusion rates and reduced absorption capacity.
Innovation Solution
A liquid-absorbing body comprising an absorbing layer with a water-absorbing resin and a base material layer with liquid permeability, where the base material layer has a first layer made of cellulose and a second layer with a different basis weight, ensuring efficient ink absorption and diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer base material is used, then the structure is simple, but the ink diffusion performance is poor
Solution Approach 1:
The base material layer is divided into two distinct layers with different basis weights. The first layer (higher basis weight) provides structural support and initial liquid absorption, while the second layer (lower basis weight) enhances liquid permeability and diffusion. This segmentation allows each layer to perform its specific function optimally, improving overall ink diffusion performance without excessive complexity.
Solution Approach 2:
Different regions of the base material layer are assigned different properties through the use of two layers with different basis weights. The first layer has higher density for structural integrity, while the second layer has lower density for enhanced liquid flow. This local differentiation of material properties optimizes both structural support and liquid diffusion capabilities.
2Productivity
If the base material layer has high liquid permeability, then ink diffusion improves, but the absorbing layer's liquid-absorbing ability decreases
Solution Approach 1:
The base material layer is segmented into two layers with different basis weights to divide functional responsibilities. The first layer (higher basis weight) maintains structural integrity and provides controlled liquid absorption, while the second layer (lower basis weight) provides enhanced liquid permeability and diffusion pathways. This segmentation prevents the entire structure from having uniformly high permeability, thus preserving overall liquid absorption capacity while improving diffusion.
Solution Approach 2:
The patent applies local quality by creating zones with different permeability characteristics within the base material layer. The first layer provides a more dense, absorption-oriented zone, while the second layer provides a more permeable, diffusion-oriented zone. This spatial differentiation allows the structure to simultaneously achieve both liquid absorption and diffusion capabilities without compromise.
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 proposed liquid-absorbing body achieves enhanced ink absorption and diffusion, leading to improved absorption capacity and efficiency in collecting waste ink from inkjet printers.
Implementation Method 1
an absorbing layer having a water-absorbing resin and having liquid-absorbing ability
Implementation Method 2
water-absorbing resin and having liquid-absorbing ability
Implementation Method 3
a base material layer stacked on at least one surface side of the absorbing layer, the base material layer having liquid permeability
Data Source
AI summary
A liquid-absorbing body includes: an absorbing layer having a water-absorbing resin and having liquid-absorbing ability; and a base material layer stacked on at least one surface side of the absorbing layer, the base material layer having liquid permeability, in which the base material layer has a first layer including cellulose and a second layer positioned on a side of the first layer opposite to the absorbing layer, the second layer having a basis weight different from a basis weight of the first layer, and A2<A1, wherein A1 (g/cm2) is the basis weight of the first layer and A2 (g/cm2) is the basis weight of the second layer.