Collector Substrate Advancement for Fluid Management

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Solution Overview

Problem

Image forming systems face inefficiencies due to frequent replacement and manual intervention required for absorbers that absorb excess fluid, limiting user feedback on saturation and reducing productivity, lifespan, and versatility of substrates.

Innovation Solution

A fluid collector assembly with a collector substrate, advancement unit, and control module that selectively advances the collector substrate to collect excess fluid, providing real-time feedback and adjustable saturation control, reducing absorber thickness and replacement frequency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a stationary absorber is used to absorb excess fluid, then fluid collection is achieved, but frequent replacement and manual intervention are required

Engineering Contradiction:
Improvefluid collection capabilityVSAvoidsystem productivity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The absorber is changed from a stationary component to a movable one that can be advanced along a transport path. The movable absorber can be periodically replaced or repositioned, allowing continuous operation without frequent manual intervention, thus resolving the contradiction between maintaining fluid collection capability and improving system productivity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates automatic detection and advancement mechanisms that allow the absorber system to serve itself. When the absorber becomes saturated, the system automatically detects this and advances a fresh absorber into position, reducing manual intervention and maintaining productivity

Inventive Principle:
Principle #25Self-service

2Quantity of substance

If absorber thickness is increased to retain more fluid, then fluid retention capacity is improved, but user feedback on saturation is limited

Engineering Contradiction:
Improvefluid retention capacityVSAvoidsaturation feedback to user
Core Design Contradiction:
Quantity of substanceVSLoss of information

Solution Approach 1:

The system incorporates sensors and detection mechanisms that monitor the saturation state of the absorber and provide real-time feedback to the control system and user. This allows the system to know when the absorber is saturated even if it is thick, resolving the contradiction between increased fluid retention capacity and loss of saturation information

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The absorber may be divided into multiple segments or zones, each monitored independently. This segmentation allows for better tracking of saturation levels throughout the absorber structure, providing more comprehensive feedback while maintaining high fluid retention capacity

Inventive Principle:
Principle #1Segmentation

3Device complexity

If manual replacement of absorbers is required, then simple system structure is maintained, but productivity is reduced

Engineering Contradiction:
Improvesystem structure simplicityVSAvoidoperational productivity
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system automatically detects when an absorber is saturated and triggers the advancement or replacement mechanism without human intervention. This self-service capability maintains relatively simple system structure while dramatically improving productivity by eliminating manual replacement operations

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The automatic advancement mechanism ensures that fluid collection continues uninterrupted. As one absorber becomes saturated, another is automatically positioned to take its place, maintaining continuous operational productivity without requiring manual intervention to stop or pause the system

Inventive Principle:
Principle #20Continuity of useful action

4Ease of manufacture

If stationary absorbers are used, then simple implementation is achieved, but absorber lifespan is reduced

Engineering Contradiction:
Improveimplementation simplicityVSAvoidabsorber lifespan
Core Design Contradiction:
Ease of manufactureVSDuration of action of stationary object

Solution Approach 1:

By making the absorber movable rather than stationary, the system allows absorbers to be systematically replaced or repositioned before they become fully saturated and失效. This dynamic approach extends the effective lifespan of each absorber while maintaining relatively simple implementation through automated handling mechanisms

Inventive Principle:
Principle #15Dynamics

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

Enhances productivity, extends the lifespan of the collector substrate, and increases the range of substrates and sizes that can be used by automating fluid collection and providing real-time feedback on saturation.

Implementation Method 1

The collector substrate collects a second portion of the fluid not retained by the substrate

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

The collector substrate collects a second portion of the fluid not retained by the substrate

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Data Source

PatentEP2855158B1Collector substrate advancement to collect fluid
Publication Date: 2019.09.18 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • EP2855158B1 patent drawingFigure 1
  • EP2855158B1 patent drawingFigure 2
  • EP2855158B1 patent drawingFigure 3A

AI summary

An image forming system includes a fluid applicator unit, a substrate positioning unit, and a fluid collector assembly. The fluid collector assembly includes a collector substrate, a collector advancement unit, and a collector control module. The fluid applicator unit may apply fluid to a substrate. The substrate positioning unit may position the substrate in a printzone to receive the fluid from the fluid applicator unit such that a first portion of the fluid remains on the substrate and a second portion of the fluid does not remain on the substrate. The collector substrate may collect the second portion of the fluid in the printzone below the substrate. The collector advancement unit may advance the collector substrate along a collector transport path below the substrate in the printzone. The collector control module may control the collector advancement unit to selectively advance the collector substrate along the collector transport path in response to application of the fluid to the substrate by the fluid applicator unit.