Printing Consumable IC Chip Reuse Tracking for Selective Inspection

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Solution Overview

Problem

Existing technologies require a large processing load for electrical characteristic inspections of reused IC chips in consumable articles, such as ink cartridges, leading to inefficiencies.

Innovation Solution

A management device and IC chip system that tracks the number of reuses and determines whether the IC chip can be reused based on a predetermined threshold, reducing the need for comprehensive electrical inspections by only inspecting chips below the reuse limit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrical characteristic inspection is performed on all collected IC chips for reuse, then reliability of reused chips is ensured, but processing load increases significantly

Engineering Contradiction:

Improvereliability of reused IC chipsVSAvoidprocessing load for reuse

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies preliminary action by performing a reuse count check before electrical characteristic inspection. The management device reads the reuse count from the IC chip's storage unit, and only chips with counts below the threshold proceed to inspection. This preliminary filtering action reduces the number of chips requiring full inspection, thereby lowering processing load while maintaining reliability for eligible chips.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements local quality by applying different processing standards to different IC chips based on their reuse counts. Chips with reuse counts below the threshold receive full electrical characteristic inspection, while chips at or above the threshold are excluded from inspection. This differentiated approach ensures high reliability for reused chips while reducing overall processing burden.

Inventive Principle:

Principle #3Local quality

2Productivity

If reuse count tracking is implemented in IC chip, then selective inspection is enabled to reduce processing load, but device complexity increases

Engineering Contradiction:

Improveprocessing efficiency for reuseVSAvoidcomplexity of IC chip management system

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies universality by integrating the reuse count tracking function into the existing IC chip structure. The management device uses the same communication interface and storage mechanisms already present in the IC chip for other purposes, adding the reuse count tracking capability without requiring entirely new hardware components. This multi-functional approach enables selective inspection while minimizing additional device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250332840A1Printing consumable article management IC chip, management device, and non-transitory computer readable storage medium

Publication Date: 2025.10.30 BROTHER KOGYO KK

AI summary

A management device for an IC chip to be provided to a consumable article that is to be attached to or supplied to a printing device. The management device includes a controller. The controller is configured to: acquire information on the number of reuses of the IC chip which is stored in an IC storage included in the IC chip; determine whether the number of reuses is equal to or greater than a predetermined number of times based on the acquired information; and restore, in the IC storage, information obtained by counting up the number of reuses when the controller determines that the number of reuses is less than the predetermined number of times.