Conveying Device Adhesive Particle Sulfur Control

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Solution Overview

Problem

Existing conveying devices face challenges in effectively removing pressure-sensitive adhesive particles with sulfur content outside the range of 0.1 to 0.5 mass%, leading to warping and defects in pressure-bonded printed materials, particularly in high humidity environments.

Innovation Solution

A conveying device equipped with a conveying member that uses pressure-sensitive adhesive particles with a sulfur content of 0.1 to 0.5 mass% and a removing member to contact and remove residual adhesive particles, ensuring optimal hygroscopic balance and releasability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pressure-sensitive adhesive particles with sulfur content outside the range of 0.1 to 0.5 mass% are used, then the conveying device can operate, but warping and defects occur in pressure-bonded printed materials, particularly in high humidity environments

Engineering Contradiction:
Improvequality of pressure-bonded printed materialsVSAvoidwarping and defects in printed materials
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention changes the chemical composition parameter of the pressure-sensitive adhesive particles by controlling the sulfur content to be within the specific range of 0.1 to 0.5 mass%. This parameter optimization resolves the contradiction by preventing excessive moisture absorption that causes warping and defects, while maintaining the adhesive functionality for pressure-bonded printed materials.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If a removing member is added to contact and remove residual adhesive particles, then releasability is enhanced, but device complexity increases

Engineering Contradiction:
Improvereleasability of pressure-bonded printed materialsVSAvoidstructure of conveying device
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The removing member is configured to automatically contact and remove residual adhesive particles from the conveying member during the normal conveying operation. This self-service mechanism enhances releasability without requiring additional manual intervention or complex external systems, thus resolving the contradiction between improved ease of operation and device complexity.

Inventive Principle:
Principle #25Self-service

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 suppresses warping and enhances releasability of pressure-bonded printed materials by maintaining a hygroscopic balance and preventing excessive moisture absorption, reducing defects and improving handling ease.

Implementation Method 1

pressure-sensitive adhesive particles having a pressure-induced phase transition property

Methodology Applied
Scientific EffectPressure-induced phase transition: Phase Change

Implementation Method 2

maintaining a hygroscopic balance and preventing excessive moisture absorption

Methodology Applied
Scientific EffectHygroscopic absorption: Absorption (physical)

Data Source

PatentUS11796939B2Conveying device and image forming apparatus
Publication Date: 2023.10.24 FUJIFILM BUSINESS INNOVATION CORP
  • US11796939B2 patent drawing
  • US11796939B2 patent drawing
  • US11796939B2 patent drawing

AI summary

A conveying device includes a conveying member that conveys a spray-receiving medium to be sprayed with pressure sensitive adhesive particles having a pressure-induced phase transition property, containing at least a binder resin, and having a sulfur content of 0.1 mass % or more and 0.5 mass % or less relative to an entirety of the pressure sensitive adhesive particles as measured by X-ray fluorescence; and a removing member that contacts the conveying member and removes the pressure sensitive adhesive particles remaining on the conveying member.