Belt Module Protecting Sheet for Image Forming Apparatus
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Solution Overview
Problem
Conventional methods for exchanging thin endless belt members in image forming apparatuses often result in damage due to dents and folds, leading to improper cleaning or breakage, especially when handling thin belt members with a thickness of 48 μm or less.
Innovation Solution
A belt module with a protecting sheet along the inner peripheral surface of the belt member is used to suppress deformation and protect the belt during exchange, allowing for safe insertion and removal without contacting the frame, thereby preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the belt member is handled during insertion relative to the frame, then the belt member can be installed, but the end portion of the belt member contacts the frame causing dents and deformation
Solution Approach 1:
A protecting sheet is introduced as an intermediary component between the belt member and the frame during insertion. The protecting sheet contacts the frame first, preventing direct contact between the belt member end portion and the frame, thereby eliminating dents and deformation while allowing smooth insertion operation
Solution Approach 2:
The protecting sheet is implemented as a thin film or shell-like component that wraps or covers the belt member during handling. This flexible protective layer allows the belt member to be maneuvered and inserted without direct exposure to harmful contact with the frame, preventing surface damage
2Ease of operation
If the belt member is taken out from the packing box, then the belt member can be installed, but the belt member twists causing folds and dents
Solution Approach 1:
The protecting sheet serves as a mediator between the packing box environment and the belt member. During removal and installation, the sheet absorbs mechanical stresses and prevents direct contact between the belt member and potential damage sources, eliminating folds and dents
Solution Approach 2:
The protecting sheet is applied to the belt member before installation to provide pre-emptive protection. This beforehand cushioning prevents damage by absorbing potential impact forces and mechanical stresses during handling, ensuring the belt member surface remains intact
3Ease of operation
If the frame is folded in two to facilitate belt member insertion, then the projected area is reduced, but the belt member end portion still contacts the frame causing damage
Solution Approach 1:
Even when the frame is folded to reduce its projected area and facilitate insertion, the protecting sheet acts as a mediator between the belt member end portion and the frame. This intermediary layer ensures that no direct contact occurs, preventing damage while allowing the frame folding operation to proceed
Data Source
AI summary
A belt module including a replacement belt member to be supported by a supporting portion of an image forming apparatus includes an endless belt member, and a protecting sheet, provided along an inner peripheral surface of the belt member, for suppressing deformation of the belt member by an external force and for protecting the inner peripheral surface of the belt member.