Integral Cover Process Unit for Image Forming Apparatus
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Solution Overview
Problem
Conventional image forming apparatuses require excessive time and labor for replacing process units due to the need to independently open covers and pull out process units, even when only replacing expendables like toner or photosensitive drums.
Innovation Solution
An image forming apparatus design where the cover for the unit accommodation section is integral with the process unit, allowing it to be pulled out together with the process unit, reducing the operational steps and time required for replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cover and process unit are separate components, then the cover can protect the process unit when installed, but the replacement operation requires two independent steps (opening cover and pulling out process unit)
Solution Approach 1:
The patent merges the cover and process unit into a single integrated assembly where the cover is provided integrally with the process unit. This allows the cover to move together with the process unit during insertion and removal operations, reducing the replacement process to a single operation while maintaining protective coverage when installed.
2Loss of time
If the cover is integrated with the process unit, then the replacement operation is simplified to a single step, but the cover must be large enough to accommodate the process unit during removal
Solution Approach 1:
The patent applies dynamics by making the cover openable and movable relative to the process unit. The cover can be opened to a predetermined angle when the process unit is pulled out, providing sufficient clearance for removal while maintaining a compact closed state when installed, thus reducing the effective volume requirement.
3Ease of operation
If the cover is made openable at a predetermined angle, then the process unit can be easily pulled out, but the cover mechanism becomes more complex
Solution Approach 1:
The patent segments the cover into multiple parts: a first cover portion that opens to a predetermined angle and a second cover portion that can be fully removed. This segmentation allows the cover to provide guided removal assistance through the first portion while allowing complete clearance through the second portion, achieving ease of operation without requiring complex mechanical opening mechanisms.
Data Source
AI summary
An image forming apparatus including: a process unit having a developer container for containing a developer; an apparatus main body having an opening and a unit accommodation section into which the process unit is inserted through the opening and detachably accommodated; and a cover for closing the opening in a state that the process unit is accommodated in the unit accommodation section, the cover being integrally provided with the process unit.