Printer Drum Cartridge Memory for Automatic Toner Type Detection

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Solution Overview

Problem

Conventional image-forming apparatuses require cumbersome operation settings changes to use low-cost toner cartridges, which can be burdensome for users and manufacturers, especially when contracts are canceled or when improper cartridges are attached.

Innovation Solution

An image-forming apparatus with a controller that reads type information from drum and toner cartridges to automatically adjust operations, eliminating the need for manual setting changes by distinguishing between standard and low-cost types, and displaying error messages for improper cartridge combinations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If operation settings are changed to enable low-cost toner cartridge usage, then compatibility with low-cost toner cartridge is improved, but ease of operation deteriorates due to cumbersome setting changes

Engineering Contradiction:

Improvecompatibility with low-cost toner cartridgeVSAvoidease of operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system automatically detects the cartridge type through identification information on the drum cartridge and autonomously adjusts operation settings without requiring manual user intervention. The controller reads the identification information and automatically determines whether to permit low-cost toner cartridge usage, eliminating the need for users to manually change settings.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The drum cartridge includes pre-stored identification information that specifies its type (standard or low-cost). This information is prepared in advance on the cartridge itself, allowing the system to automatically recognize and respond to the cartridge type without requiring pre-configuration or manual setting changes by the user.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If manual setting changes are required for low-cost toner cartridge, then device complexity is reduced, but loss of time increases due to cumbersome operation changes

Engineering Contradiction:

Improvedevice complexityVSAvoidtime for operation setting changes

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The system performs automatic detection and setting adjustment based on identification information read from the drum cartridge. The controller autonomously handles the entire process of determining cartridge compatibility and adjusting operations, eliminating the need for manual user intervention and time-consuming setting changes.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The manual mechanical process of changing operation settings is replaced by an automated information-based system. The identification information on the cartridge and the controller's automatic reading and processing of this information substitutes for manual user actions, eliminating time loss associated with manual setting changes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If automatic type detection is implemented, then ease of operation is improved, but device complexity increases due to additional memory and communication components

Engineering Contradiction:

Improveease of operationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The drum cartridge serves multiple functions: it holds the photosensitive drum, contains the identification information specifying cartridge type, and interfaces with the controller. By integrating the identification function into the existing drum cartridge structure, the system avoids adding separate dedicated identification devices, thereby limiting the increase in overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The identification information on the drum cartridge acts as an intermediary that carries type information from the cartridge to the controller. This intermediary mechanism enables automatic detection without requiring complex direct communication systems, as the identification information simply needs to be read and processed by the controller based on cartridge insertion.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11513470B2Image-forming apparatus including drum cartridge having memory storing first type information, and toner cartridge having memory storing second type information

Publication Date: 2022.11.29 BROTHER KOGYO KK

AI summary

An image-forming apparatus includes: a toner cartridge configured to accommodate toner; a drum cartridge for use with the toner cartridge; and a controller. The drum cartridge includes a photosensitive drum, and a drum memory storing a first type information indicating a type of the drum cartridge. The controller is configured to communicate with the drum memory. The controller is configured to perform: reading the first type information from the drum memory; and changing an operation of the image-forming apparatus based on the type indicated by the first type information.