Recording Media Curl Control via Gel Coating Stress Balancing
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Solution Overview
Problem
Traditional photographic bases experience curl issues due to unbalanced stress from resin coatings on both sides of the raw base paper, which existing techniques struggle to fully address effectively.
Innovation Solution
Incorporating surface-activating filler materials with organic reagents into extruded polyethylene layers on both sides of the base paper, allowing for increased filler loading and compatibility, thereby reducing the need for additional costly additives and layers, and providing curl control through balanced stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resin coating is applied to both sides of raw base paper to form photobase substrate, then imaging layer can be coated for imaging purposes, but unbalanced stress is created resulting in curl
Solution Approach 1:
A gel coating layer is applied to the backside of the photobase substrate to create balancing stress that offsets the frontside resin coating stress. This counterweight approach uses the gel layer's expansion characteristics to counteract the curling tendency caused by the frontside imaging layer coating, thereby achieving curl control while maintaining imaging capability.
Solution Approach 2:
The invention changes the physical and chemical parameters of the backside coating by using a gel-based composition with specific expansion characteristics. The gel layer's ability to expand and contract in response to environmental conditions creates dynamic stress balancing, transforming the backside from a simple support surface to an active stress-compensating layer.
2Stability of the object's composition
If basis weight of raw base is increased to reduce curl, then stiffness and caliper increase, but material cost and weight increase
Solution Approach 1:
Instead of increasing the basis weight of the raw base paper, the invention changes the parameters of the backside coating by using a gel-based composition with specific expansion characteristics. This allows curl control to be achieved through the coating's stress-balancing properties rather than through increased substrate weight, thereby maintaining lighter overall media weight.
Solution Approach 2:
The invention uses a composite backside coating system combining gel polymer with potential fillers or additives to create a material that provides curl control functionality without requiring increased basis weight. The gel-based composite material offers stress-balancing properties that替代 the need for heavier substrate.
3Stability of the object's composition
If additional coating is applied to backside to create balancing stress, then curl is alleviated, but device complexity and manufacturing steps increase
Solution Approach 1:
The gel coating layer is designed to perform multiple functions simultaneously: it acts as a mechanical stress-balancing layer to control curl, provides a substrate for potential backside imaging, and can serve as a protective barrier. By merging these functions into a single coating layer rather than using separate specialized layers for each function, the overall device complexity is reduced.
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 solution effectively reduces curl and enhances the stiffness and strength of the recording media, making it suitable for various printing applications while minimizing material usage and costs.
Implementation Method 1
providing curl control through balanced stress distribution
Implementation Method 2
combining fillers with organic reagents can allow for increased filler loading, expansion of different types of fillers that can be used in polyethylene extruded layer
Implementation Method 3
increased stiffness and strength in the resulting recording media
Data Source
AI summary
The present disclosure provides recording media and related methods. A recording media for printing can comprise a base paper and a backside extruded polyethylene layer on a side of the base paper. The backside extruded polyethylene layer can include a filler and an organic reagent admixed in the extruded polyethylene layer, wherein the filler and organic reagent are present in the backside extruded polyethylene layer in an amount of 20% by weight to 50% by weight based on the total weight of the backside extruded polyethylene layer.