Transfer Roller Lifetime Prediction via Multi-Parameter Resistance Analysis

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current image forming apparatuses, such as MFPs, cannot accurately predict the lifetime of transfer roller pairs or determine failures based solely on electric resistance, as resistance values vary with usage and environmental conditions, leading to unpredictable downtime and maintenance challenges.

Innovation Solution

An information processing apparatus connected via a network collects and analyzes detected values about physical properties and usage of components, using a derived formula to estimate the resistance value of transfer roller pairs, allowing for determination of failures and lifetime prediction, thereby reducing downtime and improving maintenance efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If only electric resistance is used to monitor transfer roller pair status, then monitoring simplicity is maintained, but measurement precision deteriorates due to variations from usage and environmental conditions

Engineering Contradiction:
Improvemonitoring system simplicityVSAvoidfailure detection accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The monitoring system measures multiple parameters (electric resistance, current, voltage) using the same measurement apparatus, allowing the system to serve multiple diagnostic functions while maintaining hardware simplicity. This multi-functional approach enables accurate failure detection without increasing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system transitions from monitoring a single parameter (electric resistance) to monitoring multiple parameters (electric resistance, current, voltage). By changing the set of monitored parameters, the system achieves higher measurement precision and reliability while using the same physical measurement apparatus.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If transfer roller pair is monitored continuously, then reliability improves through early failure detection, but loss of time increases due to frequent measurements and data processing

Engineering Contradiction:
Improvefailure detection reliabilityVSAvoidmeasurement and processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs measurements periodically at predetermined intervals rather than continuously. This periodic measurement approach maintains reliability by detecting failures between replacements while reducing the time and computational resources required for monitoring.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system automatically determines whether measurement results indicate failure or normal wear using predetermined thresholds, eliminating the need for manual analysis. This self-service capability reduces time loss by automating the diagnostic decision-making process.

Inventive Principle:
Principle #25Self-service

3Productivity

If transfer roller pair is replaced proactively based on predicted lifetime, then productivity improves by avoiding downtime, but loss of substance increases due to premature replacement

Engineering Contradiction:
ImproveMFP operational availabilityVSAvoidtransfer roller pair utilization
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The system continuously monitors actual usage conditions and measurement results, comparing them against predicted lifetime models. This feedback mechanism allows dynamic adjustment of replacement timing, enabling proactive replacement only when actually needed rather than following a fixed schedule, thus avoiding both downtime and premature replacement.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The replacement strategy transitions from static (fixed interval or condition-based) to dynamic (condition-adaptive). The system adjusts replacement timing based on actual measured conditions and their relationship to predicted behavior, optimizing the balance between maintaining productivity and avoiding premature replacement.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11042111B2Information processing apparatus, information processing system, and image forming apparatus
Publication Date: 2021.06.22 TOSHIBA TEC KK
  • US11042111B2 patent drawing
  • US11042111B2 patent drawing
  • US11042111B2 patent drawing

AI summary

According to an embodiment, an information processing apparatus includes a communication device and a processor. The processor collects information from a plurality of apparatuses via the communication device. The processor derives a formula on a basis of the collected information, the formula defining a relationship between a value about use of the component or the consumable item and a value about physical property of the component or the consumable item.