Ink Refilling Control for Compliant Tank Verification

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Solution Overview

Problem

Existing image printing apparatuses do not effectively manage consumable ink usage based on predetermined use conditions, leading to potential misuse or inefficiency in ink refilling operations.

Innovation Solution

An image printing apparatus with a mounting unit for ink tanks, a print head, a sub tank for ink supply, and a control unit that prevents or allows ink refilling based on compliance with predetermined conditions, ensuring appropriate processing and usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the refilling unit is allowed to refill ink from the tank to the sub tank without condition checking, then the ink refilling operation can be performed freely, but unauthorized or non-compliant tank usage may occur

Engineering Contradiction:
Improveink refilling operationVSAvoidusage compliance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The control unit checks whether the tank complies with predetermined conditions before allowing the refilling operation to proceed. This preliminary verification ensures that only compliant tanks can refill ink, preventing unauthorized usage while maintaining smooth operation for authorized users.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control unit provides feedback by determining compliance status of the tank and using this information to enable or disable the refilling operation. This feedback mechanism ensures that the refilling unit only operates when the tank meets the required conditions, balancing operational ease with usage compliance.

Inventive Principle:
Principle #23Feedback

2Reliability

If the control unit checks tank compliance before refilling, then usage compliance is ensured, but the refilling operation may be delayed or prevented in non-compliant cases

Engineering Contradiction:
Improveusage complianceVSAvoidrefilling operation speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The compliance check is performed in advance before the refilling operation starts. For compliant tanks, this preliminary action is instantaneous and does not delay the refilling process. For non-compliant tanks, it prevents unauthorized operation while maintaining system reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system automatically determines tank compliance status and makes the refilling operation available or unavailable based on the compliance result. This self-service approach eliminates the need for manual intervention or complex user actions, maintaining high productivity for compliant users while ensuring reliability for all cases.

Inventive Principle:
Principle #25Self-service

3Reliability

If the refilling operation is restricted to compliant tanks only, then unauthorized ink usage is prevented, but user convenience may be reduced

Engineering Contradiction:
Improveusage complianceVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The control unit provides clear feedback to users about the compliance status of their tanks and whether the refilling operation can be performed. This feedback mechanism maintains user convenience by allowing smooth operation for compliant tanks while clearly indicating when restrictions apply, preventing unauthorized usage without unnecessarily complicating legitimate operations.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12145369B2Image printing apparatus, control method of image printing apparatus and processing apparatus
Publication Date: 2024.11.19 CANON KK
  • US12145369B2 patent drawing
  • US12145369B2 patent drawing
  • US12145369B2 patent drawing

AI summary

For appropriate execution of processing depending on a condition in an image printing apparatus, the image printing apparatus includes a mounting unit on which a tank is mountable, a print head, a sub tank which receives ink from the tank and supplies the ink to the print head, and a refilling unit which refills the sub tank with ink from the tank. In a case where a tank mounted on the mounting unit is noncompliant with a predetermined condition, the control unit prevents the refilling unit from refilling the sub tank with ink from the tank. In contrast, in a case where a tank mounted on the mounting unit is compliant with the predetermined condition, the control unit causes the refilling unit to refill the sub tank with ink from the tank.