Sheet Post-Processing Guide Switching for Modular Expansion Units

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Solution Overview

Problem

Existing sheet post-processing apparatuses are costly due to the need for multiple switching guides for various expansion units, which complicates the configuration and increases costs.

Innovation Solution

A sheet post-processing apparatus with a post-processing main unit and an expansion unit, where the expansion unit includes a guide contact member that interacts with a switching guide in the main unit to switch the conveyance direction, eliminating the need for separate switching guides for each expansion unit type.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple switching guides are provided for various expansion units, then the functionality is enhanced, but the device complexity and cost increase

Engineering Contradiction:

ImprovefunctionalityVSAvoidconfiguration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The switching guide is designed as a universal component that can serve multiple expansion units with different functions. Instead of providing separate switching guides for each expansion unit type, a single switching guide structure is used that can be configured to work with various expansion units, thereby reducing device complexity while maintaining enhanced functionality

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The switching guide is made movable rather than fixed, allowing it to switch between different positions to accommodate different expansion units. This dynamic configuration enables the same switching guide to adapt to various expansion unit types, reducing the need for multiple dedicated switching guides and simplifying the overall device configuration

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple switching guides are provided for various expansion units, then the functionality is enhanced, but the cost increases

Engineering Contradiction:

ImprovefunctionalityVSAvoidcost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Multiple switching functions that were previously required separate switching guides are now merged into a single switching guide structure. This consolidation reduces the total number of components needed, lowering manufacturing costs while maintaining the ability to support various expansion units

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4566974B1Sheet post-processing apparatus and image forming system

Publication Date: 2026.02.18 KYOCERA DOCUMENT SOLUTIONS INC

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AI summary

A sheet post-processing apparatus (1) includes a post-processing main unit (1M) and an expansion unit (1E). The expansion unit (1E), into which a sheet having passed through the post-processing main unit (1M) is introduced, is removably mounted on the post-processing main unit (1M). The post-processing main unit (1M) includes a switching guide (13a) that switches the conveyance direction of the sheet between a first direction (f1) leading to a main-unit discharge tray (53) and a second direction (f2) leading to the expansion unit (1E). The expansion unit (1E) includes a guide contact member (17f) that, when the expansion unit(1E) is mounted on the post-processing main unit(1M), makes contact with the switching guide (13a) to switch the switching guide (13a) to a position for the second direction (f2).