Slidable Processing Unit for Compact Image Forming Apparatus
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Solution Overview
Problem
Conventional image forming apparatuses face challenges in maintaining processing units due to increased footprint and limited mobility, making it difficult to perform maintenance, especially when processing units are stacked vertically on the same lateral face of the main apparatus.
Innovation Solution
A configuration where a second processing unit is slidable between a connecting and separate position on the main apparatus, allowing vertical stacking with a sheet tray displacement, reducing the overall footprint and enhancing maintenance accessibility by exposing parts of the first processing unit and sheet tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If processing units are disposed on mutually opposed lateral faces of the main body, then the footprint of the image forming apparatus is increased
Solution Approach 1:
The patent transitions from a horizontal arrangement of processing units on opposite lateral faces to a vertical stacking arrangement on the same lateral face. This dimensional change from horizontal to vertical space utilization reduces the footprint while maintaining maintenance accessibility through the slidable configuration that allows processing units to move toward and away from the main body.
Solution Approach 2:
The patent combines multiple processing units (first and second processing units) into a compact vertical stack on the same lateral face of the main body, rather than distributing them across opposite lateral faces. This merging approach reduces the overall footprint while the slidable mechanism ensures maintenance accessibility is preserved.
2Area of stationary object
If the output tray is located above the feeding tray vertically stacked on the same lateral face, then the footprint is decreased, but the output tray cannot slide to move toward and away from the main body making maintenance difficult
Solution Approach 1:
The patent introduces a slidable mechanism that allows the second processing unit to dynamically move between a retracted position (away from the main body) for maintenance and an extended position (toward the main body) for operation. This dynamic configuration resolves the contradiction by enabling both compact footprint and maintenance accessibility at different operational states.
Solution Approach 2:
The patent segments the processing units into independently slidable components, where the second processing unit can move relative to the main body and the first processing unit. This segmentation allows the second processing unit to be accessed for maintenance without affecting the overall compact structure, resolving the contradiction between reduced footprint and maintenance accessibility.
3Ease of repair
If a processing unit is provided that is slidable to move toward and away from the main body on the same lateral face, then maintenance is facilitated, but the footprint is increased because it requires additional space for the processing unit
Solution Approach 1:
The patent implements a nested configuration where the first and second processing units are stacked vertically within the same lateral face footprint. The slidable mechanism allows these nested units to move collectively toward and away from the main body, enabling maintenance access without increasing the overall footprint of the apparatus.
Data Source
AI summary
An image forming apparatus includes a main body and a processing apparatus. The processing apparatus includes a first processing unit and a second processing unit. The main body has a manual-feed tray at one lateral face. The first processing unit and the second processing unit are stacked in the vertical direction on the same lateral face side of the main body as the manual-feed tray provided. The second processing unit is slidable in a toward-away direction between a connecting position and a separate position, and has a hollow to insert the manual-feed tray therein at the connecting position.