Fixing Apparatus Jam Separation Mechanism
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Solution Overview
Problem
Existing fixing apparatuses face issues with surface deterioration of the image carrier and fixing member, toner adhesion, reduced transfer properties, and heat-related problems, leading to decreased durability and reliability, especially when paper jams occur.
Innovation Solution
A fixing apparatus with a detection mechanism to identify jams and a separation mechanism that disconnects the fixing member from the image carrier and recording medium, preventing excessive heat transfer and toner adhesion, and utilizing a heat-insulating structure to maintain surface integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixing member maintains continuous contact with the image carrier and recording medium during operation, then image transfer and fixing function is ensured, but surface deterioration and toner adhesion occur when paper jams happen
Solution Approach 1:
The fixing member is designed to dynamically change its contact state with the image carrier and recording medium. During normal operation, the fixing member maintains contact to perform image fixing. When a paper jam is detected, the fixing member automatically separates from the image carrier and recording medium, preventing surface deterioration and toner adhesion. This dynamic adjustment of contact state resolves the contradiction between maintaining fixing function reliability and preventing surface deterioration.
2Device complexity
If the fixing member remains in contact with the recording medium during a jam, then the structure remains simple, but heat accumulates causing surface layer deterioration and reduced durability
Solution Approach 1:
The system performs preliminary separation of the fixing member from the image carrier and recording medium when a paper jam is detected, before heat accumulation can cause surface layer deterioration. By anticipating the harmful effect of heat buildup and acting in advance to separate the components, the system prevents temperature-related damage without requiring complex active cooling mechanisms, thus maintaining relatively simple device structure while addressing heat accumulation issues.
3Object-affected harmful factors
If the fixing member is separated from the image carrier during a jam, then surface integrity is maintained, but additional detection and control mechanisms are required
Solution Approach 1:
The system uses an intermediary detection mechanism that monitors the presence or status of the recording medium in the fixing apparatus. When the intermediary detector identifies a paper jam condition, it triggers the separation of the fixing member from the image carrier. This intermediary detection approach enables automated protection of surface integrity without requiring direct complex control mechanisms between the fixing member and image carrier, thus balancing surface protection with acceptable device complexity.
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 prevents surface layer deterioration, maintains high reliability, reduces heat transfer, and ensures efficient operation with shorter restart times, enhancing the durability and quality of the fixing apparatus and image transfer.
Implementation Method 1
a heating roller (15) and a fixing roller (13) disposed to come in contact with each other through the fixing belt (2)
Implementation Method 2
utilizing a heat-insulating structure to maintain surface integrity
Data Source
AI summary
A fixing apparatus including at least one transfer and fixing member which is placed in contact with an image carrier and a recording medium and configured to transfer and fix an image on the image carrier to the recording medium, at least detection mechanism configured to detect a jam generated on the recording medium, a separation mechanism configured to contact the transfer and fixing member with and separate from the transfer and fixing member from the image carrier or recording medium, the separation mechanism being configured to separate the transfer and fixing member from the image carrier or recording medium when the jam on the recording medium is detected by the detection mechanism.