Movable Drawer Toner Cartridge Mounting Guide and Seal

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Solution Overview

Problem

In image-forming apparatuses, users may inadvertently mount toner cartridges onto the drawer when the process cartridge is removed, leading to potential damage to the toner cartridge, drawer, and main casing.

Innovation Solution

The design includes a movable drawer that can operate between inner and outer positions with the toner cartridge mounted, featuring support structures and a sealing mechanism to prevent accidental toner leakage and ensure stable mounting, even when the process cartridge is detached.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the toner cartridge is made detachably mountable on the drawer, then the ease of operation is improved, but the risk of erroneous mounting and subsequent damage increases

Engineering Contradiction:

Improveease of mountingVSAvoiddamage risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a guide structure consisting of guide grooves on the drawer and guide protrusions on the toner cartridge as an intermediary mechanism. This guide structure acts as a mediator that allows the toner cartridge to be easily mounted while preventing erroneous mounting orientations, thereby resolving the contradiction between ease of operation and damage risk

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide structure enables the toner cartridge to self-align and self-correct during the mounting process. The guide protrusions automatically fit into the guide grooves in the correct orientation, allowing the system to self-regulate and prevent erroneous mounting without requiring external intervention or complex control mechanisms

Inventive Principle:

Principle #25Self-service

2Ease of operation

If the drawer is made movable between inner and outer positions, then the ease of operation is improved, but the stability of the mounted cartridge decreases

Engineering Contradiction:

Improvedrawer accessibilityVSAvoidcartridge stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent implements a locking mechanism that performs preliminary action by securing the toner cartridge to the drawer before the drawer is moved to the outer position. The locking mechanism ensures the cartridge is firmly fixed in advance, preventing instability or accidental detachment when the drawer is extended for user access

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11372366B2Image-forming apparatus including movable drawer on which toner cartridge is mountable without process cartridge

Publication Date: 2022.06.28 BROTHER KOGYO KK

AI summary

An image-forming apparatus includes: a main casing; a drawer movable in a first direction relative to the main casing; a process cartridge detachably mountable on the drawer; and a toner cartridge detachably mountable on the drawer. The drawer is movable between: an inner position where the drawer is accommodated in the main casing; and an outer position where a part of the drawer is located outside the main casing. The process cartridge includes: a photosensitive drum rotatable about an axis extending in a second direction crossing the first direction when the process cartridge is mounted on the drawer; and a developing device configured to supply toner to the photosensitive drum. The toner cartridge is configured to store the toner.