Print Materials Container In-Situ Replenishment Mechanism

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Solution Overview

Problem

Existing methods for replenishing print materials in printing devices are often messy, prone to spills, and require manual removal and replacement of reservoirs, leading to potential over- or under-filling and increased operational costs.

Innovation Solution

A print materials container with integrated mechanisms such as a compression mechanism, squeeze bottle mechanism, or accordion-shaped collapsible container, which allows for in-situ replenishment of print materials directly into the printing device's reservoir, minimizing manual handling and spill risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual removal and replacement of reservoirs is used for replenishing print materials, then the reservoir can be replaced with a full one, but the process is messy, prone to spills, and requires significant manual handling

Engineering Contradiction:
Improvespill preventionVSAvoidmanual handling complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention extracts the print materials from the removable reservoir and transfers them directly into the printing device's reservoir through a replenishment port. This allows the reservoir to remain in place while being refilled, eliminating the messy manual handling associated with removing and replacing entire reservoirs.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The print materials container is designed to be inserted through the replenishment port and nested within the printing device's reservoir system. This nested configuration allows for direct transfer of materials without external manual handling, reducing spills and operational complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Quantity of substance

If reservoirs are manually removed and replaced for replenishment, then the printing device can be refilled, but over- or under-filling occurs leading to increased operational costs

Engineering Contradiction:
Improveprint materials volumeVSAvoidoperational efficiency
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The replenishment system incorporates feedback mechanisms that monitor the transfer of print materials from the container to the reservoir. This feedback control ensures accurate filling levels, preventing over- or under-filling and thereby reducing operational costs associated with material waste or insufficient supply.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The invention replaces manual mechanical handling of reservoirs with an automated transfer mechanism. The system uses controlled material transfer through the replenishment port, substituting human operation with automated control to achieve precise filling and improve operational efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If the reservoir remains in-situ during filling, then the replenishment process is faster and cleaner, but a dispense mechanism is required to transfer materials

Engineering Contradiction:
Improvereplenishment speedVSAvoiddispense mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The dispense mechanism is designed to be self-contained within the print materials container, which is inserted through the replenishment port. The mechanism automatically dispenses materials from the container into the reservoir without requiring external intervention or complex external systems, enabling fast and clean replenishment while managing complexity within the portable container.

Inventive Principle:
Principle #25Self-service

4Reliability

If a lock feature is integrated with the dispense mechanism, then connection to the fill port is secure, but the mechanism becomes more complex

Engineering Contradiction:
Improveconnection stabilityVSAvoidlocking mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The lock feature is merged with the dispense mechanism as an integrated component rather than a separate system. This combination provides secure connection to the fill port while minimizing overall complexity by consolidating functions within the portable print materials container.

Inventive Principle:
Principle #5Merging (Combining)

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 enables convenient, fast, and clean replenishment of print materials, reducing operational costs and minimizing user error, while maintaining the integrity of the printing process.

Implementation Method 1

the compression mechanism can house a print materials container and having a plunger to dispense the print materials

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

the squeeze bottle mechanism can include a flexible print materials container to dispense the print materials

Methodology Applied
Scientific EffectMechanical Pressure: Pressure Increase

Implementation Method 3

the bulb pump mechanism can include a collapsible container to dispense the print materials

Methodology Applied
Scientific EffectPressure Differential: Pressure Gradient

Data Source

PatentEP3762237B1Print materials replenishment
Publication Date: 2025.04.02 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • EP3762237B1 patent drawingFigure 1
  • EP3762237B1 patent drawingFigure 2
  • EP3762237B1 patent drawingFigure 3

AI summary

In some examples, a print materials container can include a dispense mechanism to dispense print materials directly to an in-situ reservoir of a printing device, a lock feature to engage a fill port during connection of the dispense mechanism to the fill port, and a valve integrated with the dispense mechanism for connecting the dispense mechanism to the fill port of the reservoir and comprising an output opening offset from a center axis of a tip of the dispense mechanism. The valve can open responsive to rotation of the valve opening with respect to the lock feature such that opposite openings align.