Intermediate Transfer Belt Composite Layer for Precise Toner Transfer
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Solution Overview
Problem
Existing image forming apparatuses face challenges with intermediate transfer belts that suffer from decreased print speed, precision in superimposing toner images, mechanical strength, and uneven transfer due to environmental changes and varying sheet surfaces, leading to issues like toner aggregation and uneven shading.
Innovation Solution
The intermediate transfer belt is designed with a base layer made of polyimide or polyamide imide, an elastic layer of acrylic rubber with surface asperities defined by spherical particles, and an ion conductant of bis(trifluoromethanesulfonyl)imide to enhance flexibility, conductivity, and transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the intermediate transfer belt is made of polyimide to increase mechanical strength and heat resistance, then flame resistance and structural stability are improved, but surface rigidity increases causing toner aggregation and incomplete transfer
Solution Approach 1:
The patent applies a soft resin layer locally on the surface of the polyimide base layer. This creates a localized soft region that contacts the toner images, allowing deformation to fit rough paper surfaces while the underlying polyimide maintains its flame resistance and structural stability. The soft resin layer specifically addresses the transfer precision issue without compromising the flame resistance of the base material.
Solution Approach 2:
The patent creates a composite structure combining polyimide base layer with a soft resin surface layer. This composite material integrates the advantages of both materials: the polyimide provides flame resistance and structural stability, while the soft resin provides surface flexibility for precise toner transfer. The combination resolves the contradiction between flame resistance and transfer precision.
2Manufacturing precision
If the intermediate transfer belt uses a soft elastic layer to improve toner transfer precision, then contact with rough surfaces is improved, but mechanical strength and flame resistance decrease
Solution Approach 1:
The soft resin layer is applied only on the surface portion that contacts toner images and paper, providing localized softness for precise transfer. The underlying polyimide base layer maintains high mechanical strength and flame resistance. This localized application resolves the contradiction by providing softness only where needed for precision while preserving strength elsewhere.
Solution Approach 2:
The composite structure combines soft resin surface layer with strong polyimide base layer. The soft resin improves toner transfer precision by adapting to rough surfaces, while the polyimide base provides the necessary mechanical strength and flame resistance that the soft resin alone would lack.
3Stability of the object's composition
If the intermediate transfer belt is made rigid to maintain shape stability, then deformation due to continuous usage is reduced, but compatibility with various paper surfaces decreases
Solution Approach 1:
The polyimide base layer provides global shape stability and structural integrity, while the soft resin surface layer provides local adaptability to various paper surfaces. The surface layer can deform to conform to rough surfaces during transfer, while the base layer maintains overall belt shape stability.
Solution Approach 2:
The composite structure combines rigid polyimide base layer with soft resin surface layer. The rigid base maintains shape stability and prevents deformation during continuous usage, while the soft surface layer provides compatibility with various paper surfaces by deforming as needed during the transfer process.
4Adaptability or versatility
If the intermediate transfer belt increases surface flexibility to fit rough paper surfaces, then compatibility with various paper types is improved, but deformation due to continuous usage increases
Solution Approach 1:
The soft resin surface layer provides localized flexibility for adapting to paper surfaces, while the polyimide base layer maintains global shape stability. The surface layer handles the adaptability requirement without compromising the overall structural stability of the belt.
Solution Approach 2:
The composite structure combines soft resin with rigid polyimide. The soft resin surface provides compatibility with various paper types by deforming to fit rough surfaces, while the rigid polyimide base prevents excessive deformation and maintains shape stability during continuous usage.
Data Source
AI summary
A transfer belt includes a base layer and an elastic layer disposed on the base layer. The elastic layer has an outer face that has surface asperities defined by spherical particles. The elastic layer includes acrylic rubber and an ion conductant. The ion conductant includes an anionic component made of bis(trifluoromethanesulfonyl)imide (TFSI).