Fold-Enhancing Device Retaining Member Positioning

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Solution Overview

Problem

Existing fold-enhancing devices for recording-medium bundles often result in deformation and wrinkles due to the lack of effective retention mechanisms, leading to entanglement with pressing members during the folding process.

Innovation Solution

A fold-enhancing device comprising a pressing member and retaining members, where the retaining members are positioned away from the fold line and move in conjunction with the pressing member along the fold line to minimize deformation and prevent entanglement, utilizing a moving mechanism that maintains their relative positional relationship.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a pressing member is used to press against the fold line of a recording-medium bundle, then the fold-enhancing effect is improved, but deformation and wrinkles occur due to lack of retention mechanisms

Engineering Contradiction:
Improvefold qualityVSAvoidbundle deformation
Core Design Contradiction:
Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

A retaining member is introduced as an intermediary element between the pressing member and the recording-medium bundle. The retaining member holds the bundle stable during the pressing operation, preventing deformation and wrinkles while allowing the pressing member to effectively enhance the fold.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The retaining member is positioned at a specific location away from the fold line, creating a localized retention zone. This localized approach provides stability exactly where needed without interfering with the pressing action at the fold line, thus improving fold quality while preventing bundle deformation.

Inventive Principle:
Principle #3Local quality

2Reliability

If the retaining member is positioned close to the fold line, then retention effect is improved, but entanglement with the pressing member occurs

Engineering Contradiction:
Improveretention effectivenessVSAvoidentanglement
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The retaining member is strategically positioned at a specific distance away from the fold line, creating an optimized retention zone. This localized positioning provides effective retention while maintaining sufficient clearance to prevent entanglement with the pressing member during operation.

Inventive Principle:
Principle #3Local quality

3Reliability

If the retaining member contacts the pressing member, then retention is improved, but the pressing member's movement is restricted

Engineering Contradiction:
Improveretention effectivenessVSAvoidpressing member mobility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The retaining member is positioned at an optimized distance from the fold line, creating a localized retention field that is effective without physically contacting the pressing member. This spatial separation maintains pressing member mobility while providing sufficient retention effectiveness through the localized retention zone.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10377604B2Fold-enhancing device, post-pressing apparatus equipped with fold-enhancing device, and processing apparatus equipped with fold-enhancing device
Publication Date: 2019.08.13 FUJIFILM BUSINESS INNOVATION CORP
  • US10377604B2 patent drawing
  • US10377604B2 patent drawing
  • US10377604B2 patent drawing

AI summary

A fold-enhancing device includes a pressing member, at least one retaining member, and a moving mechanism. The pressing member presses against a fold line of a recording-medium bundle folded into a booklet shape. The recording-medium bundle is obtained by stacking multiple sheets of recording media. The retaining member retains the recording-medium bundle and is provided at a position located away from the fold line in a direction intersecting the fold line and not in contact with the pressing member. The moving mechanism moves the pressing member and the retaining member in a direction extending along the fold line.