Sheet Transport Switching Component Resuming Function After Roll Separation

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Solution Overview

Problem

Existing sheet transporting devices face challenges in maintaining the switching function after one of the transporting rolls is moved to an open position, leading to operational inefficiencies and potential jamming issues.

Innovation Solution

A sheet transporting device is designed with a switching component that can switch the position of a pair of transporting rolls between a nipping and an unnipping position, and is configured to resume its switching function even after one of the transporting rolls is moved to an open position by a separating component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If one of the transporting rolls is moved to an open position by a separating component, then sheet removal or jam clearance is enabled, but the switching function of the switching component becomes inoperable

Engineering Contradiction:

Improvesheet removal capabilityVSAvoidswitching function operability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The switching component is divided into a first component and a second component that can move relative to each other. The first component remains stationary while the second component moves to maintain engagement with the cam, ensuring the switching function remains operable even when transporting rolls are moved to open position

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The switching component is designed to maintain its operational configuration before the separating component moves the transporting roll. The cam and follower arrangement is pre-configured to ensure continuous engagement throughout the entire range of motion, preventing loss of switching function

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If a separating component is added to move transporting rolls to open position, then sheet jam clearance is improved, but device complexity increases

Engineering Contradiction:

Improvejam clearance capabilityVSAvoidcomponent structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The switching component integrates multiple functions into a single mechanism. The cam-follower system simultaneously controls the transporting roll position and maintains switching operability, eliminating the need for separate mechanisms and reducing overall device complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The switching component serves multiple purposes: it switches between transport modes and maintains operability during sheet removal operations. This multi-functionality reduces the need for additional specialized components, keeping the device structure relatively simple

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12280980B2Sheet transporting device and image forming apparatus

Publication Date: 2025.04.22 FUJIFILM BUSINESS INNOVATION CORP

AI summary

A sheet transporting device includes: a pair of transporting rolls provided to a sheet transport path; a separating component configured to move one of transporting rolls that form the pair of transporting rolls to an open position where the one of the transporting rolls is spaced apart from an other of the transporting rolls; and a switching component having a switching function of switching a position of the pair of transporting rolls between a nipping position and an unnipping position, the switching component being configured to resume the switching function when the pair of transporting rolls once moved to the open position by the separating component is returned to a normal operating position.