Fixing Device Holding Member Dual Adhesive Segmentation
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Solution Overview
Problem
In existing film fixing devices, the adhesive strength between the heater and the holding member decreases over time due to lubricant application, leading to peeling issues during reuse, which complicates the effective recycling and reuse of these components.
Innovation Solution
The fixing device incorporates a holding member with distinct adhesive application areas: a first portion for new device assembly and a second portion for reuse scenarios, allowing for stable adhesion even after peeling, thus enhancing the reuse rate of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied between heater and holding member in film fixing device, then heater is secured to holding member for initial operation, but adhesive strength decreases over time due to lubricant exposure causing peeling during reuse
Solution Approach 1:
The holding member is divided into multiple adhesive application portions (first adhesive application portion and second adhesive application portion) along the longitudinal direction. This segmentation allows different adhesive layers to be applied at different locations, enabling the device to use different adhesive portions during initial operation and reuse cycles, thereby preventing adhesive failure and peeling over time.
2Ease of manufacture
If single adhesive application area is used on holding member, then assembly is simple for new device, but heater cannot be reliably reattached after peeling during cleaning and reuse
Solution Approach 1:
Multiple adhesive application portions are pre-configured on the holding member during manufacturing. This preliminary preparation ensures that when the device needs to be reused after the fixing film is replaced, functional adhesive portions remain available for reattaching the heater, thereby enabling reliable reuse without requiring complex modification procedures.
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
This configuration ensures the desired adhesive strength is maintained during both initial use and subsequent reuse cycles, facilitating effective recycling and improving the resource reuse rate within the fixing device.
Implementation Method 1
a heater provided inside of the fixing belt and configured to heat the fixing belt
Implementation Method 2
a holding member configured to hold the heater by an adhesive
Data Source
AI summary
A fixing device includes an endless fixing belt, a heater provided inside of the fixing belt, a rotatable pressing member contacting an outer peripheral surface of the fixing belt and configured to form a fixing nip portion, and a holding member to hold the heater by an adhesive. The holding member includes a first portion to which the adhesive is applied and a second portion in a region different from the first portion. In a state in which the fixing device is a new state, the heater and the holding member are adhered by the adhesive applied in the first portion. In a state in which the fixing device is reused from the new state, the heater and the holding member are adhered by the adhesive applied in the second portion.