Movable Gas Nozzle for Fusing Apparatus Jamming
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Solution Overview
Problem
Conventional image forming apparatuses suffer from sheet jamming issues, where the sheet is not completely separated from the fusing apparatus, leading to damage and reduced productivity due to the sheet being pushed into a narrow space between the nozzle and the belt, causing jamming and damage to the fusing apparatus.
Innovation Solution
A fusing apparatus with a detecting section that identifies jamming and a separating section that moves the injecting nozzle away from the fusing section, allowing for a larger distance between the nozzle and the fusing apparatus, preventing sheet jamming and reducing the risk of damage by enabling the nozzle to separate from the fusing apparatus when jamming is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle tip is positioned close to the belt to inject gas between the sheet and belt for separation, then the gas injection effectiveness is improved, but the risk of sheet jamming and damage to the fusing apparatus increases
Solution Approach 1:
The nozzle is designed to be movable rather than fixed, allowing it to dynamically adjust its position. During normal operation, the nozzle tip is positioned close to the belt for effective gas injection and sheet separation. When sheet jamming is detected by the detection section, the nozzle automatically moves to a retracted position, eliminating the harmful factor while maintaining the beneficial effect during normal operation.
2Reliability
If the nozzle is positioned close to the belt for effective gas injection, then sheet separation performance is improved, but the complexity of the device increases due to the need for movable nozzle mechanism and detection system
Solution Approach 1:
The system incorporates a detection section that automatically detects sheet jamming conditions and triggers the nozzle to move to a safe position. This self-service mechanism eliminates the need for complex manual control systems or continuous monitoring by external operators, reducing overall device complexity while maintaining effective sheet separation during normal operation.
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
Prevents damage to the fusing apparatus by maintaining a safe distance between the nozzle and the fusing apparatus during sheet jamming, allowing for easy removal of jammed sheets and reducing the risk of further damage, while also allowing for efficient gas injection when not jamming, thus improving the operational reliability and reducing maintenance costs.
Implementation Method 1
an injecting section which injects gas between a recording medium conveyed by the nipping section and attached to the fusing section and the fusing section
Data Source
AI summary
Disclosed is a fusing apparatus including: a fusing section including a nipping section which conveys a recording medium while applying pressure and heat to the recording medium; an injecting section which is provided on a downstream side of a conveying direction of the recording medium with respect to the nipping section and which injects gas between a recording medium conveyed by the nipping section and attached to the fusing section and the fusing section; a detecting section which detects jamming of the recording medium in a conveying path of the recording medium; and a separating section which separates the injecting section from the fusing section when jamming of the recording medium is detected by the detecting section.