Separator Hanger Mechanism for Photoconductor Protection

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The packaging fabric insert in image forming devices can inadvertently touch the sensitive photoconductor drum, causing damage, and must be removed before installing the toner cartridge, but its removal is not always apparent to the end-user, potentially leading to installation issues.

Innovation Solution

A separator hanger with a body having forward and rearward portions and a central portion, featuring side wing sections and a tail section that detachably attach to the packaging insert, keeping it clear of the photoconductor drum and incorporating a mechanical lock-out mechanism to prevent toner cartridge installation until the insert is removed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the packaging fabric insert is placed between the doctor blade and developer roll to prevent toner fusing, then handling and shipping problems are solved, but the insert may inadvertently touch the photoconductor drum causing damage

Engineering Contradiction:
Improveprevention of toner fusingVSAvoiddamage to photoconductor drum
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The solution segments the packaging system into two parts: the fabric insert for toner protection and a separate separator hanger for spatial separation. The hanger acts as an independent component that physically divides the insert from the photoconductor drum area, allowing the insert to remain in place for toner protection while preventing contact with the drum through the hanger's blocking structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The separator hanger serves as an intermediary component between the packaging insert and the photoconductor drum. It mediates the spatial relationship by positioning itself between these two elements, blocking the insert from reaching the drum while allowing the insert to maintain its protective function in the developer roll area

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the packaging fabric insert remains in place after shipping, then protection is maintained, but it may fall into the printer and cause damage

Engineering Contradiction:
Improveprotection during shippingVSAvoiddamage from insert falling into printer
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The separator hanger is pre-installed with the packaging insert during manufacturing, creating a preliminary assembled unit. This pre-configuration ensures that the insert is automatically restrained during shipping without requiring additional protective measures, and the hanger remains in position to guide proper removal during installation

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the packaging insert is not removed before toner cartridge installation, then installation may proceed, but damage may occur

Engineering Contradiction:
Improvetoner cartridge installationVSAvoiddevice safety
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The separator hanger implements preliminary anti-action by creating a physical barrier that prevents toner cartridge installation until the packaging insert is removed. The hanger's structure blocks the cartridge from being installed, and this blocking action is lifted only after the insert is properly removed, ensuring the protective action occurs before the installation action

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS8195064B2Separator hanger for enabling constrained positioning of a packaging fabric insert in an image forming device
Publication Date: 2012.06.05 LEXMARK INTERNATIONAL INC
  • US8195064B2 patent drawing
  • US8195064B2 patent drawing
  • US8195064B2 patent drawing

AI summary

A separator hanger has a body with forward and rearward portions and a central portion interconnecting the forward and rearward portions. The rearward portion has side wing sections extending laterally in opposite directions beyond opposite side edges of the central portion with respective elements thereon adapted to extend through first slots in a packaging insert. The rearward portion also has a tail section between the side wing sections with an element thereon adapted to extend through a second slot in the packaging insert located between and offset from the first slots. Such elements provide the rearward portion in a threaded relationship with the packaging insert so as to detachably attach the rearward portion thereto. The forward portion is adapted to anchor the body to one portion of a device so as to thereby constrain the packaging insert to a position clear of another portion of the device located nearby the packaging insert.