Multilayer Imaging Blanket with Fluoroelastomer Surface for Ink Transfer
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Solution Overview
Problem
Current printing systems face challenges in achieving excellent print quality due to inadequate surface properties, mechanical conformance, and heat management of printer blankets, leading to poor ink transfer and image quality.
Innovation Solution
A multilayer imaging blanket comprising a seamless belt with a silicone layer containing metal oxide filler and a fluoroelastomer surface layer, which enhances conformance, heat retention, and ink transfer properties, along with a coating mechanism and drying station for improved print quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-layer blanket is used, then the structure is simple, but the surface properties, conformance, and heat management are insufficient leading to poor print quality
Solution Approach 1:
The blanket is divided into multiple functional layers: a support layer providing mechanical strength, a silicone layer with metal oxide filler for conformance and heat management, and a fluoroelastomer surface layer for optimal surface energy and ink transfer. Each layer performs a specific function that collectively resolves the print quality issues.
Solution Approach 2:
The invention uses composite materials combining silicone rubber with metal oxide fillers (such as aluminum oxide or silica) in the silicone layer, and fluoroelastomer in the surface layer. These composite structures provide enhanced mechanical properties, thermal management, and surface characteristics that a single material cannot achieve alone.
2Manufacturing precision
If the blanket surface energy is not optimized, then the structure remains simple, but ink transfer and image formation are poor
Solution Approach 1:
The fluoroelastomer surface layer is specifically designed to provide localized optimal surface energy properties for ink transfer, while the underlying silicone layer provides different properties for conformance and heat management. This local differentiation of material properties enables precise control over ink interaction at the critical surface interface.
Solution Approach 2:
By changing the chemical composition and surface properties through the use of fluoroelastomer, the surface energy parameters are optimized to enhance ink transfer. The metal oxide filler content and particle size in the silicone layer are also adjusted to control surface characteristics and thermal properties.
3Productivity
If the blanket cannot manage heat properly, then the structure is simple, but ink drying and cooling between cycles are problematic
Solution Approach 1:
The metal oxide fillers in the silicone layer, particularly aluminum oxide, provide high thermal conductivity to facilitate heat transfer from the blanket surface during printing cycles. This thermal management enables efficient ink drying and cooling between cycles, maintaining productivity.
Solution Approach 2:
The silicone layer acts as a thermal intermediary between the fluoroelastomer surface layer and the support layer, transferring heat efficiently. The metal oxide fillers enhance this thermal mediation capability, allowing the blanket to retain heat when needed for ink drying and dissipate it for cooling between cycles.
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 multilayer imaging blanket improves print quality by optimizing surface energy, conformance, and heat management, resulting in better ink transfer and uniform drying, addressing the limitations of existing blankets.
Implementation Method 1
the inability of the blanket to properly manage heat during the process, such as by retaining heat on the blanket surface for drying the ink
Implementation Method 2
transferring sufficient heat away from the blanket for suitable cooling between cycles
Implementation Method 3
the surface properties (e.g., wettability and surface energy) of the blanket promote good image formation on the blanket and transfer of the print image
Data Source
AI summary
A multilayer imaging blanket comprises a seamless belt. A silicone layer is disposed on the belt. The silicone layer comprises silicone rubber and a metal oxide filler. A fluoroelastomer surface layer is disposed on the silicone layer. Printing apparatuses employing the multilayer imaging blanket are also disclosed.