Toner Replenishment Pack with Nested Regulation Unit

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Solution Overview

Problem

Existing image forming apparatuses face challenges in efficiently replenishing developer toner without disrupting the internal configuration, particularly in maintaining the size and functionality of the apparatus.

Innovation Solution

The image forming system incorporates a replenishment pack and a regulation unit that allows for the external replenishment of toner while maintaining the apparatus's compact size and operational efficiency, ensuring stable communication and power supply to the memory tag.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the replenishment pack is detached for toner replenishment, then the toner replenishment can be performed, but the apparatus structure becomes complex and the operation becomes cumbersome

Engineering Contradiction:
Improvetoner replenishment operationVSAvoidreplenishment mechanism structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The replenishment pack is nested within the developer container, allowing the replenishment pack to be inserted and removed independently while the developer container remains attached to the image forming apparatus. This nested structure enables easy toner replenishment without detaching the entire developer container, thus simplifying the operation while maintaining a relatively simple apparatus structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If the replenishment pack is kept attached for stable communication, then the communication stability is improved, but the ease of replenishment operation is reduced

Engineering Contradiction:
Improvecommunication stabilityVSAvoidreplenishment operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The memory tag is pre-installed on the replenishment pack before insertion. This preliminary action ensures that the communication interface is already prepared and positioned correctly, enabling stable communication as soon as the replenishment pack is inserted, without requiring additional attachment steps or complex connection mechanisms.

Inventive Principle:
Principle #10Preliminary action

3Volume of moving object

If the apparatus size is reduced for compactness, then the portability is improved, but the space for internal configuration is reduced

Engineering Contradiction:
Improveapparatus sizeVSAvoidinternal configuration space
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The system is segmented into three main components: the image forming apparatus, the developer container, and the replenishment pack. This segmentation allows each component to be optimized independently for size and function. The replenishment pack can be stored externally when not in use, reducing the internal volume requirements of the main apparatus while maintaining full functionality.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3995902B1Image forming system
Publication Date: 2025.05.21 CANON KK
  • EP3995902B1 patent drawingFigure 1
  • EP3995902B1 patent drawingFigure 2
  • EP3995902B1 patent drawingFigure 3

AI summary

An image forming system is characterized in that a control unit communicates with a memory device via a first electric contact portion and a second electric contact portion after a replenishment cartridge is regulated in an installation portion by a regulation unit.