Print Material Visual Indicator for Waste Reduction

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Solution Overview

Problem

Traditional printing devices often result in wasted print materials due to premature replacement, as users lack effective indicators to determine when refills are necessary and when they should avoid overfilling.

Innovation Solution

Incorporating a visual indicator system, such as a fuel gauge-like display with icons and color schemes, to monitor and indicate the remaining print material levels, providing users with timely refill notifications and preventing overfilling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If users replace print materials based on estimated usage, then they ensure continuous printing capability, but they waste print materials due to premature replacement

Engineering Contradiction:
Improvecontinuous printing capabilityVSAvoidprint material waste
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent implements a feedback mechanism by providing visual indicators (windows showing color changes from full to empty) that continuously inform users about the actual print material levels. This feedback loop eliminates the need for estimation and enables timely replacement exactly when needed, preventing both waste from early replacement and interruptions from late replacement.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The visual indicator system performs preliminary detection of print material levels and communicates this information to users before the materials are completely depleted. This allows users to plan and execute replacement at the optimal moment, avoiding both premature replacement waste and printing interruptions.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If users refill print materials frequently to ensure availability, then they avoid printing interruptions, but they incur additional time and resource costs

Engineering Contradiction:
Improveprinting continuityVSAvoidrefill time and resource costs
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The visual feedback system provides real-time information about print material levels, allowing users to understand exactly when refilling is necessary. This eliminates unnecessary frequent refills and enables users to schedule refilling activities only when the visual indicators show materials are running low, thereby optimizing productivity while minimizing time and resource costs.

Inventive Principle:
Principle #23Feedback

3Device complexity

If no visual indicator system is provided, then the device structure remains simple, but users cannot determine when refills are necessary leading to material waste

Engineering Contradiction:
Improvedevice structure simplicityVSAvoidprint material waste
Core Design Contradiction:
Device complexityVSLoss of substance

Solution Approach 1:

The patent employs color change indicators within windows that transition from indicating full to empty states as print materials are consumed. This visual signaling system provides clear, intuitive information about material levels without requiring complex electronic components or sophisticated interfaces, thus maintaining relative structural simplicity while effectively preventing material waste through informed user action.

Inventive Principle:
Principle #32Color changes

4Device complexity

If users rely on manual estimation of print material levels, then no additional monitoring system is needed, but they risk overfilling or underfilling the print material supply

Engineering Contradiction:
Improvemonitoring system absenceVSAvoidprint material level accuracy
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The visual indicator system enables the printing device to self-monitor and self-report its print material levels without requiring external estimation tools or complex electronic sensors. The color-changing windows provide automatic, continuous information about material levels, allowing users to accurately determine when refilling is needed without manual estimation, thereby eliminating both overfilling and underfilling problems while maintaining simple device architecture.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11597211B2Print material visual indicator
Publication Date: 2023.03.07 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • US11597211B2 patent drawing
  • US11597211B2 patent drawing
  • US11597211B2 patent drawing

AI summary

Examples disclosed herein relate to identifying an amount of remaining supply of a print material, selecting one of a plurality of threshold ranges associated with the amount of remaining print material, and updating a visual indicator indicative of the selected one of the plurality of threshold ranges.