Multi-Point Tapping Device for Medium Alignment

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing tapping devices suffer from medium misalignment issues due to the use of a single displacement unit supported by a bias unit, which is length-dependent.

Innovation Solution

A tapping device with a contact unit, an approaching and separation unit, and displacement units supported by a bias unit at shifted positions, allowing for independent displacement in a crossing direction to align media regardless of length.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single displacement unit is supported by a bias unit, then the device complexity is reduced, but the manufacturing precision deteriorates due to medium misalignment depending on medium length

Engineering Contradiction:
Improvestructure complexityVSAvoidalignment precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The displacement function is segmented into multiple displacement units positioned at different locations along the medium. Each displacement unit independently displaces the medium at its specific position, ensuring that the entire medium is properly aligned regardless of its length. This segmentation resolves the contradiction by distributing the alignment function across multiple points rather than relying on a single unit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each displacement unit is equipped with its own bias unit to provide localized elastic support and displacement capability. The local quality principle ensures that each segment of the medium receives appropriate alignment force at its specific location, accommodating variations in medium length while maintaining overall alignment precision without requiring a complex centralized control system.

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If multiple displacement units are supported by bias units at shifted positions, then the manufacturing precision is improved to suppress misalignment, but the device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The alignment system is divided into multiple independent displacement units, each with its own bias unit. This segmentation allows each unit to independently handle the displacement needs of different medium lengths, improving alignment precision while keeping each individual unit relatively simple in structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using a single complex displacement mechanism that attempts to handle all medium lengths, the invention inverts the approach by using multiple simple displacement units distributed along the medium. Each unit performs a simple local displacement function, and collectively they achieve the complex goal of universal alignment across varying medium lengths.

Inventive Principle:
Principle #13The other way round (Inversion)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively suppresses medium misalignment by stabilizing the tapping direction and alignment, even with varying media lengths.

Implementation Method 1

a displacement unit that is supported by the approaching and separation unit via a bias unit to be displaceable in the crossing direction

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250296364A1Tapping device, post-processing apparatus, and image forming apparatus
Publication Date: 2025.09.25 FUJIFILM BUSINESS INNOVATION CORP
  • US20250296364A1 patent drawing
  • US20250296364A1 patent drawing
  • US20250296364A1 patent drawing

AI summary

A tapping device includes a contact unit that comes into contact with a medium from one side of a crossing direction that crosses a transport direction of the medium; an approaching and separation unit that approaches and is separated from the contact unit in the crossing direction; and a displacement unit that is supported by the approaching and separation unit via a bias unit, at each of positions shifted from each other in the transport direction to be displaceable in the crossing direction, and taps the medium in contact with the contact unit from the other side of the crossing direction by the approaching and separation unit approaching the contact unit.