Toner Container Regulating Member Prevents Misalignment

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Solution Overview

Problem

The existing image forming apparatuses face challenges in ensuring that the toner container is properly aligned during transportation and installation, leading to potential toner leakage and reduced print density due to improper communication between the toner discharge port and the developer replenishment port.

Innovation Solution

The apparatus incorporates a regulating member that interferes with the toner container's grip portion when it is in an incorrect posture, preventing the front cover from closing and ensuring the toner container is aligned correctly for communication during transportation and installation, and automatically switches to allow replenishment when in use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the developer housing container is mounted in an incorrect posture during transportation, then the cover member can be closed, but the developer discharge port cannot communicate with the developer replenishment port, causing toner leakage and reduced print density

Engineering Contradiction:
Improveproper alignment of developer housing containerVSAvoidstructure for preventing incorrect mounting
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The regulating member is positioned to preemptively block the closing of the cover member when the developer housing container is in an incorrect posture. By applying counter-action before the harmful effect (toner leakage) occurs, the system prevents misalignment during transportation without requiring complex sensors or control systems.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The regulating member acts as an intermediary element between the cover member and the developer housing container. It mediates the closing action by physically interfering with the cover member's movement when the container is improperly positioned, thereby ensuring correct alignment through a simple mechanical intervention.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the cover member is made closable without restrictions, then ease of operation is improved, but toner leakage occurs when the developer housing container is in incorrect posture

Engineering Contradiction:
Improveclosing operation of cover memberVSAvoidtoner leakage
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The regulating member applies preliminary anti-action by blocking the cover member's closing path when the developer housing container is misaligned. This prevents toner leakage before it can occur, while still allowing normal closing operations when the container is properly positioned.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The regulating member converts the potential harm of unrestricted cover closing into a benefit by using the cover's closing force itself to enforce proper alignment. The same closing action that could cause toner leakage is instead used to ensure correct positioning of the developer housing container.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If the regulating member interferes with the cover member closing, then proper alignment is ensured, but device complexity increases

Engineering Contradiction:
Improvealignment of developer discharge port with developer replenishment portVSAvoidregulating member mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The regulating member serves as a simple intermediary element that mediates between the cover member and the developer housing container. It provides alignment enforcement through a straightforward mechanical interference mechanism without requiring complex sensors, actuators, or control systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The regulating member enables the system to self-correct alignment issues automatically. When the developer housing container is improperly positioned, the regulating member's interference with the cover closing action naturally guides the user to reposition the container correctly, without requiring external monitoring or control.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9817337B2Image forming apparatus that restrains use of apparatus in state where developer is not replenishable
Publication Date: 2017.11.14 KYOCERA DOCUMENT SOLUTIONS INC
  • US9817337B2 patent drawing
  • US9817337B2 patent drawing
  • US9817337B2 patent drawing

AI summary

An image forming apparatus includes an apparatus main body, an image carrier, a developing device, a developer housing container, and a regulating member. The developer housing container takes a posture changeable between a first posture and a second posture. The developer discharge port communicates with the developer replenishment port such that the developer is replenishable to the developing device in the first posture. The second posture locates the developer discharge port separate from the developer replenishment port and seals the developer discharge port. The regulating member allows the cover member to be closed with respect to the apparatus main body while the developer housing container takes the first posture in the apparatus main body. The regulating member regulates the cover member to be closed with respect to the apparatus main body by an interference with the developer housing container while the developer housing container takes the second posture.