Intermediate Transfer Belt Groove Design for Friction and Detection
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Solution Overview
Problem
Conventional intermediate transfer belts in electrophotographic image forming apparatuses face challenges in maintaining low surface frictional resistance and achieving high accuracy in toner image detection due to residual toner and grooving defects, which affect the cleaning process and optical sensor performance.
Innovation Solution
An intermediate transfer belt with a dual-layer structure, featuring a base layer with 80 or more grooves per 1-mm width and a transparent outer layer with microgrooves, is designed to reduce frictional resistance and enhance optical sensor detection accuracy by minimizing irregular reflections from grooving defective portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If grooves are formed on the intermediate transfer belt surface to reduce frictional resistance, then cleaning efficiency is improved, but grooving defective portions cause irregular reflections that reduce optical sensor detection accuracy
Solution Approach 1:
The invention introduces a dual-layer structure where the first layer contains grooves for friction reduction and the second transparent layer contains microgrooves for optical control. This adds a new dimension (the second layer) to solve the contradiction between cleaning efficiency and detection accuracy without compromising the original groove function.
Solution Approach 2:
The second layer is designed with specific local properties: it is transparent to allow optical sensor function, and contains microgrooves at specific positions to control reflections. This local quality modification addresses the detection accuracy issue while preserving the overall groove structure for cleaning.
2Measurement precision
If the intermediate transfer belt surface is made smooth to improve optical sensor detection accuracy, then detection precision is improved, but frictional resistance increases reducing cleaning efficiency
Solution Approach 1:
The belt surface is segmented into two functional layers: the first layer with grooves for friction reduction and cleaning, and the second transparent layer with microgrooves for optical reflection control. This segmentation allows each layer to independently optimize its function without compromising the other.
3Productivity
If grooves are formed on the intermediate transfer belt to facilitate toner removal, then cleaning process is improved, but grooving defects create irregular reflections that interfere with toner image detection
Solution Approach 1:
The second transparent layer acts as an intermediary between the groove structure and the optical sensor. It modifies the optical interactions by introducing microgrooves that control reflections, thereby mediating between the cleaning function (first layer grooves) and the detection function (optical sensor) without eliminating either.
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 configuration maintains low surface frictional resistance and improves the accuracy of toner image detection by reducing the influence of grooving defective portions, ensuring effective cleaning and precise position detection.
Implementation Method 1
a second layer that is provided on a side of the first surface, is configured to transmit light
Implementation Method 2
improves the accuracy of toner image detection by reducing the influence of grooving defective portions
Implementation Method 3
the coefficient of friction between the cleaning blade and the surface of the intermediate transfer belt is reduced by forming grooves
Data Source
AI summary
An intermediate transfer belt that can bear a toner image includes a first layer and a second layer. The first layer includes a first surface located on an outer peripheral surface side of the first layer. The second layer is provided on a side of the first surface, transmits light, and includes a second surface. The first surface includes first grooves that (i) extend in a first direction in a circumferential direction of the intermediate transfer belt and (ii) are arranged in a width direction of the intermediate transfer belt that is orthogonal to the circumferential direction. The second surface is located on an outer peripheral surface side of the second layer, contacts a toner image, and includes second grooves that extend in a second direction in the circumferential direction. The first grooves includes 80 or more grooves per 1-mm length in the width direction in the first surface.