Window and Indicator for Toner Visibility in Printers

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Solution Overview

Problem

Users of image forming apparatuses, such as printers, cannot easily identify the type or remaining amount of consumable supplies like toner containers without opening the device, making it cumbersome to order replacements or report maintenance needs.

Innovation Solution

Incorporating a window and indicator on the apparatus's casing that allows users to view the consumable supplies from the outside, with the indicator positioned to face the window and display relevant information, such as model numbers and remaining toner amounts, without opening the device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the opening cover is closed to maintain a compact and clean appearance, then the aesthetic appearance and compactness are improved, but the user cannot see the toner container model number and must open the cover to identify it

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidvisibility of toner container information
Core Design Contradiction:
ShapeVSLoss of information

Solution Approach 1:

A window is introduced as an intermediary element between the interior (toner container) and exterior (user view). The window allows optical transmission of information (model number visibility) while maintaining the closed state of the opening cover, thus resolving the contradiction between aesthetic appearance and information accessibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of information

If the opening cover is opened to see the toner container model number, then the information visibility is improved, but the user experiences cumbersome operation and time loss

Engineering Contradiction:
Improvevisibility of toner container informationVSAvoidtime to confirm model number
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The window is pre-configured in the closed state of the opening cover to display the toner container model number. This preliminary arrangement of information visibility eliminates the need for users to open the cover just to identify the container, saving time and effort while maintaining the closed state.

Inventive Principle:
Principle #10Preliminary action

3Loss of information

If the toner container is always visible from the outside, then the information accessibility is improved, but the device structure becomes more complex and the appearance less compact

Engineering Contradiction:
Improveaccessibility of consumable informationVSAvoidcasing structure complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The window serves as a simple intermediary structure that provides information accessibility without requiring complex modifications to the overall device architecture. It maintains the compact closed appearance while enabling external viewing of the toner container, avoiding unnecessary structural complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Loss of information

If the opening cover is opened frequently to check consumable status, then the information accuracy is improved, but the user convenience and operational efficiency deteriorate

Engineering Contradiction:
Improveaccuracy of consumable identificationVSAvoiduser convenience
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The window is prepared in advance within the closed opening cover to display consumable information. This preliminary setup allows users to accurately identify toner containers and check consumable status without opening the cover, significantly improving operational convenience and efficiency.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS7751729B2Image forming apparatus and apparatus for receiving consumable supplying member
Publication Date: 2010.07.06 KYOCERA DOCUMENT SOLUTIONS INC
  • US7751729B2 patent drawing
  • US7751729B2 patent drawing
  • US7751729B2 patent drawing

AI summary

An image forming apparatus is provided with an apparatus main body having a casing structure and adapted to perform an image forming operation, a window provided on a casing of the apparatus main body for enabling the interior of the apparatus main body to be seen, and an indicator provided in the apparatus main body for displaying specified indication information. The indicator is arranged at such a position as to face the window.